[JitDiff X64] [xtqqczze] Avoid `CollectionsMarshal.AsSpan` for derived `List ...

[MihuBot]

Job completed in 16 minutes 6 seconds (remote runner delay: 44 seconds).
dotnet/runtime#118682

Diffs

Diffs

Found 84 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 41615645
Total bytes of diff: 41614315
Total bytes of delta: -1330 (-0.00 % of base)
Total relative delta: -0.02
    diff is an improvement.
    relative diff is an improvement.


Total byte diff includes -1317 bytes from reconciling methods
	Base had   72 unique methods,     3005 unique bytes
	Diff had   64 unique methods,     1688 unique bytes

Top file improvements (bytes):
       -1330 : System.Linq.dasm (-0.10 % of base)

1 total files with Code Size differences (1 improved, 0 regressed), 259 unchanged.

Top method regressions (bytes):
          86 (15.22 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts)
          66 (12.02 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.Nullable`1[int],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Nullable`1[int]] (FullOpts)
          38 (6.95 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts)
          37 (6.78 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[long,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],long] (FullOpts)
          35 (6.41 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[short,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],short] (FullOpts)
          34 (6.23 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],byte] (FullOpts)
          34 (6.23 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[int,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],int] (FullOpts)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[byte]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[double]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[int]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[long]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[short]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.__Canon]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Numerics.Vector`1[float]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[byte]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[double]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[int]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[long]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[short]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.__Canon]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Numerics.Vector`1[float]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)

Top method improvements (bytes):
        -195 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.__Canon,System.Nullable`1[int]](System.ReadOnlySpan`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.__Canon] (FullOpts) (1 base, 0 diff methods)
        -182 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.Nullable`1[int],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Nullable`1[int]] (FullOpts) (1 base, 0 diff methods)
        -172 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts) (1 base, 0 diff methods)
        -156 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts) (1 base, 0 diff methods)
        -155 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[long,System.Nullable`1[int]](System.ReadOnlySpan`1[long],System.Func`2[long,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],long] (FullOpts) (1 base, 0 diff methods)
        -153 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[short,System.Nullable`1[int]](System.ReadOnlySpan`1[short],System.Func`2[short,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],short] (FullOpts) (1 base, 0 diff methods)
        -152 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[byte,System.Nullable`1[int]](System.ReadOnlySpan`1[byte],System.Func`2[byte,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],byte] (FullOpts) (1 base, 0 diff methods)
        -152 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[int,System.Nullable`1[int]](System.ReadOnlySpan`1[int],System.Func`2[int,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],int] (FullOpts) (1 base, 0 diff methods)
         -40 (-4.09 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.__Canon,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.__Canon] (FullOpts)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[byte]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[double]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[int]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[long]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[short]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.__Canon]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Numerics.Vector`1[float]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -24 (-3.10 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon] (FullOpts)
         -23 (-2.38 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.__Canon,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -22 (-5.54 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[int,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[long,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[short,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.15 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.Nullable`1[int],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.15 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[byte](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,bool]):System.Collections.Generic.IEnumerable`1[byte] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[double](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,bool]):System.Collections.Generic.IEnumerable`1[double] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[long](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,bool]):System.Collections.Generic.IEnumerable`1[long] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[short](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,bool]):System.Collections.Generic.IEnumerable`1[short] (FullOpts)
         -18 (-4.21 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],bool]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-4.21 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.Numerics.Vector`1[float]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],bool]):System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]] (FullOpts)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[byte]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[double]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[int]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[long]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[short]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.__Canon]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Numerics.Vector`1[float]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)

Top method regressions (percentages):
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__344`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[byte]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[byte]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[double]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[double]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[int]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[int]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[long]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[long]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[short]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[short]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.__Canon]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.__Canon]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Numerics.Vector`1[float]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__350`1[System.Numerics.Vector`1[float]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          17 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (0 base, 1 diff methods)
          32 (Infinity of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__360`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (0 base, 1 diff methods)
          86 (15.22 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts)
          66 (12.02 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.Nullable`1[int],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Nullable`1[int]] (FullOpts)
          38 (6.95 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts)
          37 (6.78 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[long,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],long] (FullOpts)
          35 (6.41 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[short,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],short] (FullOpts)
          34 (6.23 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],byte] (FullOpts)
          34 (6.23 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[int,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],int] (FullOpts)

Top method improvements (percentages):
        -152 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[byte,System.Nullable`1[int]](System.ReadOnlySpan`1[byte],System.Func`2[byte,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],byte] (FullOpts) (1 base, 0 diff methods)
        -156 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts) (1 base, 0 diff methods)
        -152 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[int,System.Nullable`1[int]](System.ReadOnlySpan`1[int],System.Func`2[int,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],int] (FullOpts) (1 base, 0 diff methods)
        -155 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[long,System.Nullable`1[int]](System.ReadOnlySpan`1[long],System.Func`2[long,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],long] (FullOpts) (1 base, 0 diff methods)
        -153 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[short,System.Nullable`1[int]](System.ReadOnlySpan`1[short],System.Func`2[short,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],short] (FullOpts) (1 base, 0 diff methods)
        -195 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.__Canon,System.Nullable`1[int]](System.ReadOnlySpan`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.__Canon] (FullOpts) (1 base, 0 diff methods)
        -182 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.Nullable`1[int],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Nullable`1[int]] (FullOpts) (1 base, 0 diff methods)
        -172 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<UnionByIterator>d__346`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[byte]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[byte]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[double]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[double]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[int]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[int]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[long]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[long]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[short]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[short]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.__Canon]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.__Canon]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Numerics.Vector`1[float]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<WhereIterator>d__352`1[System.Numerics.Vector`1[float]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[byte,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[double,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[int,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[long,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[short,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.__Canon,System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Nullable`1[int],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -17 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:.ctor(int):this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally1():this (FullOpts) (1 base, 0 diff methods)
         -32 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+<ZipIterator>d__362`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:<>m__Finally2():this (FullOpts) (1 base, 0 diff methods)
         -22 (-5.54 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int] (FullOpts)
         -18 (-4.21 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],bool]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-4.21 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.Numerics.Vector`1[float]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],bool]):System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[byte](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,bool]):System.Collections.Generic.IEnumerable`1[byte] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[double](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,bool]):System.Collections.Generic.IEnumerable`1[double] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[long](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,bool]):System.Collections.Generic.IEnumerable`1[long] (FullOpts)
         -18 (-4.14 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[short](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,bool]):System.Collections.Generic.IEnumerable`1[short] (FullOpts)
         -40 (-4.09 % of base) : System.Linq.dasm - System.Linq.Enumerable:ToDictionary[System.__Canon,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.__Canon] (FullOpts)
         -18 (-3.15 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.Nullable`1[int],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]],System.Func`2[System.Nullable`1[int],System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.15 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[int,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[long,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[long],System.Func`2[long,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -18 (-3.12 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[short,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[short],System.Func`2[short,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
         -24 (-3.10 % of base) : System.Linq.dasm - System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon] (FullOpts)
         -23 (-2.38 % of base) : System.Linq.dasm - System.Linq.Enumerable:Select[System.__Canon,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)

160 total methods with Code Size differences (89 improved, 71 regressed), 250169 unchanged.

--------------------------------------------------------------------------------

Artifacts:

• build-clr-checked-main.zip (88 MB)
• build-artifacts-main.zip (678 MB)
• build-clr-checked-pr.zip (88 MB)
• build-artifacts-pr.zip (92 MB)
• jit-diffs-main.zip (138 MB)
• jit-diffs-pr.zip (138 MB)
• diff-frameworks.txt (68 KB)
• ShortDiffsRegressions.md (56 KB)
• LongDiffsRegressions.md (192 KB)
• ShortDiffsImprovements.md (51 KB)
• LongDiffsImprovements.md (235 KB)

[MihuBot]

Top method regressions

86 (15.22 % of base) - System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]

 ; Assembly listing for method System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 6 single block inlinees; 2 inlinees without PGO data
+; 0 inlinees with PGO data; 7 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T03] (  7,  5.25)     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]]>
-;  V01 arg1         [V01,T01] (  7, 12   )     ref  ->  rbx         class-hnd single-def <System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]>
-;  V02 arg2         [V02,T04] (  6,  4   )     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]>
-;  V03 loc0         [V03    ] (  3,  2   )     int  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed ld-addr-op
-;  V04 loc1         [V04,T05] (  3,  5   )     ref  ->  r13         class-hnd exact single-def <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
-;  V05 loc2         [V05,T09] (  4,  2   )     ref  ->  r13         class-hnd exact single-def <System.Numerics.Vector`1[float][]>
-;  V06 loc3         [V06,T10] (  4,  2   )     ref  ->  rax         class-hnd single-def <System.Collections.Generic.List`1[System.Numerics.Vector`1[float]]>
-;  V07 loc4         [V07,T02] (  6,  8.50)     ref  ->  [rbp-0x60]  class-hnd EH-live single-def <System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]>
-;  V08 loc5         [V08,T17] (  3, 12   )  simd32  ->  [rbp-0x50]  do-not-enreg[DAS] defined-via-address <System.Numerics.Vector`1[float]>
-;  V09 OutArgs      [V09    ] (  1,  1   )  struct (32) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <UNNAMED>
-;  V10 tmp1         [V10,T06] (  3,  3   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
-;  V11 tmp2         [V11,T00] (  2, 16   )  struct ( 8) [rbp-0x58]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
-;* V12 tmp3         [V12    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[System.Numerics.Vector`1[float]]>
-;* V13 tmp4         [V13    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
-;* V14 tmp5         [V14    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
-;  V15 tmp6         [V15,T07] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
-;* V16 tmp7         [V16    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
-;* V17 tmp8         [V17    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.Span`1[System.Numerics.Vector`1[float]]>
-;* V18 tmp9         [V18    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.Span`1[System.Numerics.Vector`1[float]]>
-;  V19 tmp10        [V19,T12] (  3,  1.50)     int  ->  rsi         "Inline stloc first use temp"
-;  V20 tmp11        [V20,T11] (  3,  1.50)     ref  ->  rdi         class-hnd exact single-def "Inline stloc first use temp" <System.Numerics.Vector`1[float][]>
-;* V21 tmp12        [V21    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[System.Numerics.Vector`1[float]]>
-;* V22 tmp13        [V22    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V23 tmp14        [V23    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[System.Numerics.Vector`1[float]]>
-;* V24 tmp15        [V24    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
-;* V25 tmp16        [V25    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
-;* V26 tmp17        [V26    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V27 tmp18        [V27    ] (  0,  0   )   byref  ->  zero-ref    "field V12._reference (fldOffset=0x0)" P-INDEP
-;* V28 tmp19        [V28    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
-;* V29 tmp20        [V29    ] (  0,  0   )   byref  ->  zero-ref    "field V13._reference (fldOffset=0x0)" P-INDEP
-;* V30 tmp21        [V30    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V31 tmp22        [V31    ] (  0,  0   )   byref  ->  zero-ref    "field V14._reference (fldOffset=0x0)" P-INDEP
-;* V32 tmp23        [V32    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
-;  V33 tmp24        [V33,T13] (  2,  1   )   byref  ->  rdi         single-def "field V16._reference (fldOffset=0x0)" P-INDEP
-;  V34 tmp25        [V34,T15] (  2,  1   )     int  ->  rsi         "field V16._length (fldOffset=0x8)" P-INDEP
-;* V35 tmp26        [V35    ] (  0,  0   )   byref  ->  zero-ref    "field V17._reference (fldOffset=0x0)" P-INDEP
-;* V36 tmp27        [V36    ] (  0,  0   )     int  ->  zero-ref    "field V17._length (fldOffset=0x8)" P-INDEP
-;* V37 tmp28        [V37    ] (  0,  0   )   byref  ->  zero-ref    "field V18._reference (fldOffset=0x0)" P-INDEP
-;* V38 tmp29        [V38    ] (  0,  0   )     int  ->  zero-ref    "field V18._length (fldOffset=0x8)" P-INDEP
-;  V39 tmp30        [V39,T14] (  2,  1   )   byref  ->  rdi         single-def "field V21._reference (fldOffset=0x0)" P-INDEP
-;* V40 tmp31        [V40    ] (  0,  0   )     int  ->  zero-ref    "field V21._length (fldOffset=0x8)" P-INDEP
-;* V41 tmp32        [V41    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V23._reference (fldOffset=0x0)" P-INDEP
-;* V42 tmp33        [V42    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
-;* V43 tmp34        [V43    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V24._reference (fldOffset=0x0)" P-INDEP
-;* V44 tmp35        [V44    ] (  0,  0   )     int  ->  zero-ref    "field V24._length (fldOffset=0x8)" P-INDEP
-;  V45 rat0         [V45,T08] (  4,  2.25)     ref  ->  r13         "replacement local"
-;  V46 rat1         [V46,T16] (  2,  1   )    long  ->  rsi         "CSE for expectedClsNode"
+;  V00 arg0         [V00,T06] ( 10,  7   )     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]]>
+;  V01 arg1         [V01,T00] (  7, 18.92)     ref  ->  rbx         class-hnd single-def <System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]>
+;  V02 arg2         [V02,T08] (  5,  3.50)     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]>
+;  V03 loc0         [V03,T05] (  5,  9.46)     ref  ->  registers   class-hnd <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
+;  V04 loc1         [V04    ] (  3,  2   )     int  ->  [rbp-0x30]  do-not-enreg[X] addr-exposed ld-addr-op
+;* V05 loc2         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
+;* V06 loc3         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
+;* V07 loc4         [V07,T22] (  0,  0   )     int  ->  zero-ref   
+;  V08 loc5         [V08,T25] (  3, 11.88)  simd32  ->  [rbp-0x50]  spill-single-def <System.Numerics.Vector`1[float]>
+;  V09 loc6         [V09,T07] (  6,  8.50)     ref  ->  [rbp-0x88]  class-hnd EH-live spill-single-def <System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]>
+;  V10 loc7         [V10,T24] (  3, 12   )  simd32  ->  [rbp-0x70]  do-not-enreg[DAS] defined-via-address <System.Numerics.Vector`1[float]>
+;  V11 OutArgs      [V11    ] (  1,  1   )  struct (32) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <UNNAMED>
+;  V12 tmp1         [V12,T10] (  3,  3   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
+;  V13 tmp2         [V13,T01] (  2, 16   )  struct ( 8) [rbp-0x78]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
+;  V14 tmp3         [V14,T11] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
+;  V15 tmp4         [V15,T02] (  2, 15.84)  struct ( 8) [rbp-0x80]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
+;  V16 tmp5         [V16,T12] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]>
+;* V17 tmp6         [V17,T23] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V18 tmp7         [V18    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[System.Numerics.Vector`1[float]]>
+;* V19 tmp8         [V19    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[System.Numerics.Vector`1[float]]>
+;* V20 tmp9         [V20    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Numerics.Vector`1[float][]>
+;* V21 tmp10        [V21    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
+;* V22 tmp11        [V22    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.Span`1[System.Numerics.Vector`1[float]]>
+;* V23 tmp12        [V23    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.Span`1[System.Numerics.Vector`1[float]]>
+;  V24 tmp13        [V24,T16] (  3,  1.50)     int  ->  r12         "Inline stloc first use temp"
+;  V25 tmp14        [V25,T14] (  3,  1.50)     ref  ->  r13         class-hnd exact single-def "Inline stloc first use temp" <System.Numerics.Vector`1[float][]>
+;* V26 tmp15        [V26    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[System.Numerics.Vector`1[float]]>
+;* V27 tmp16        [V27    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
+;* V28 tmp17        [V28    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[System.Numerics.Vector`1[float]]>
+;* V29 tmp18        [V29    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Numerics.Vector`1[float]]>
+;* V30 tmp19        [V30    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
+;* V31 tmp20        [V31    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
+;  V32 tmp21        [V32,T15] (  3,  1.50)   byref  ->  r13         "field V05._reference (fldOffset=0x0)" P-INDEP
+;  V33 tmp22        [V33,T13] (  4,  2   )     int  ->  r12         "field V05._length (fldOffset=0x8)" P-INDEP
+;  V34 tmp23        [V34,T09] (  2,  4.46)   byref  ->  r13         single-def "field V06._reference (fldOffset=0x0)" P-INDEP
+;  V35 tmp24        [V35,T17] (  3,  1.50)     int  ->  r12         "field V06._length (fldOffset=0x8)" P-INDEP
+;* V36 tmp25        [V36    ] (  0,  0   )   byref  ->  zero-ref    "field V19._reference (fldOffset=0x0)" P-INDEP
+;* V37 tmp26        [V37    ] (  0,  0   )     int  ->  zero-ref    "field V19._length (fldOffset=0x8)" P-INDEP
+;  V38 tmp27        [V38,T19] (  2,  1   )   byref  ->  r13         single-def "field V21._reference (fldOffset=0x0)" P-INDEP
+;  V39 tmp28        [V39,T21] (  2,  1   )     int  ->  r12         "field V21._length (fldOffset=0x8)" P-INDEP
+;* V40 tmp29        [V40    ] (  0,  0   )   byref  ->  zero-ref    "field V22._reference (fldOffset=0x0)" P-INDEP
+;* V41 tmp30        [V41    ] (  0,  0   )     int  ->  zero-ref    "field V22._length (fldOffset=0x8)" P-INDEP
+;* V42 tmp31        [V42    ] (  0,  0   )   byref  ->  zero-ref    "field V23._reference (fldOffset=0x0)" P-INDEP
+;* V43 tmp32        [V43    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
+;  V44 tmp33        [V44,T20] (  2,  1   )   byref  ->  r13         single-def "field V26._reference (fldOffset=0x0)" P-INDEP
+;* V45 tmp34        [V45    ] (  0,  0   )     int  ->  zero-ref    "field V26._length (fldOffset=0x8)" P-INDEP
+;* V46 tmp35        [V46    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V28._reference (fldOffset=0x0)" P-INDEP
+;* V47 tmp36        [V47    ] (  0,  0   )     int  ->  zero-ref    "field V28._length (fldOffset=0x8)" P-INDEP
+;* V48 tmp37        [V48    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V29._reference (fldOffset=0x0)" P-INDEP
+;* V49 tmp38        [V49    ] (  0,  0   )     int  ->  zero-ref    "field V29._length (fldOffset=0x8)" P-INDEP
+;  V50 cse0         [V50,T18] (  3,  1.50)    long  ->  rdi         "CSE #01: moderate"
+;  V51 rat0         [V51,T03] (  4, 12.38)    long  ->  r14         "Strength reduced derived IV"
+;  V52 rat1         [V52,T04] (  4, 12.38)     int  ->  r12         "Trip count IV"
 ;
-; Lcl frame size = 96
+; Lcl frame size = 136
 
 G_M7362_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
+       push     r12
        push     rbx
-       sub      rsp, 96
-       lea      rbp, [rsp+0x80]
+       sub      rsp, 136
+       lea      rbp, [rsp+0xB0]
        mov      r15, rdi
        mov      rbx, rsi
        mov      r14, rdx
-						;; size=29 bbWeight=1 PerfScore 6.50
+						;; size=34 bbWeight=1 PerfScore 7.50
 G_M7362_IG02:
        test     r15, r15
-       je       G_M7362_IG17
+       je       G_M7362_IG15
        test     rbx, rbx
-       je       G_M7362_IG18
-       lea      rsi, [rbp-0x28]
+       je       G_M7362_IG16
+       lea      rsi, [rbp-0x30]
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:TryGetNonEnumeratedCount[System.Numerics.Vector`1[float]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],byref):bool
        call     [rax]System.Linq.Enumerable:TryGetNonEnumeratedCount[System.Numerics.Vector`1[float]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],byref):bool
        test     eax, eax
-       je       SHORT G_M7362_IG07
+       je       SHORT G_M7362_IG04
 						;; size=41 bbWeight=1 PerfScore 7.75
 G_M7362_IG03:
-       cmp      dword ptr [rbp-0x28], 0
-       je       G_M7362_IG15
-						;; size=10 bbWeight=0.50 PerfScore 1.50
+       cmp      dword ptr [rbp-0x30], 0
+       je       G_M7362_IG13
+       mov      rdi, qword ptr [r15]
+       mov      rax, 0xD1FFAB1E      ; System.Numerics.Vector`1[float][]
+       cmp      rdi, rax
+       je       G_M7362_IG08
+       mov      rax, 0xD1FFAB1E      ; System.Collections.Generic.List`1[System.Numerics.Vector`1[float]]
+       cmp      rdi, rax
+       je       G_M7362_IG07
+						;; size=51 bbWeight=0.50 PerfScore 4.00
 G_M7362_IG04:
-       mov      r13, r15
-       mov      rsi, 0xD1FFAB1E      ; System.Numerics.Vector`1[float][]
-       cmp      qword ptr [r13], rsi
-       je       SHORT G_M7362_IG06
-						;; size=19 bbWeight=0.25 PerfScore 1.12
-G_M7362_IG05:
-       xor      r13, r13
-						;; size=3 bbWeight=0.12 PerfScore 0.03
-G_M7362_IG06:
-       test     r13, r13
-       jne      G_M7362_IG13
-       mov      rsi, r15
-       mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.List`1[System.Numerics.Vector`1[float]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       test     rax, rax
-       jne      G_M7362_IG11
-						;; size=43 bbWeight=0.50 PerfScore 3.12
-G_M7362_IG07:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      rdi, r13
-       mov      esi, dword ptr [rbp-0x28]
+       mov      esi, dword ptr [rbp-0x30]
        mov      rdx, r14
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        mov      rdi, r15
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:this
        call     [r11]System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:this
-       mov      r14, rax
-       mov      gword ptr [rbp-0x60], r14
-						;; size=62 bbWeight=0.50 PerfScore 5.50
-G_M7362_IG08:
-       mov      rdi, r14
+       mov      gword ptr [rbp-0x88], rax
+						;; size=62 bbWeight=0.50 PerfScore 5.38
+G_M7362_IG05:
+       mov      rdi, rax
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():bool:this
        call     [r11]System.Collections.IEnumerator:MoveNext():bool:this
        test     eax, eax
-       je       SHORT G_M7362_IG09
-       lea      rsi, [rbp-0x50]
-       mov      rdi, r14
+       je       SHORT G_M7362_IG06
+       lea      rsi, [rbp-0x70]
+       mov      rdi, gword ptr [rbp-0x88]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:get_Current():System.Numerics.Vector`1[float]:this
        call     [r11]System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:get_Current():System.Numerics.Vector`1[float]:this
-       vmovups  ymm0, ymmword ptr [rbp-0x50]
+       vmovups  ymm0, ymmword ptr [rbp-0x70]
        vmovups  ymmword ptr [rsp], ymm0
        mov      rdi, gword ptr [rbx+0x08]
        call     [rbx+0x18]System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:Invoke(System.Numerics.Vector`1[float]):System.Nullable`1[int]:this
-       mov      qword ptr [rbp-0x58], rax
-       vmovups  ymm0, ymmword ptr [rbp-0x50]
+       mov      qword ptr [rbp-0x78], rax
+       vmovups  ymm0, ymmword ptr [rbp-0x70]
        vmovups  ymmword ptr [rsp], ymm0
        mov      rdi, r13
-       mov      rsi, qword ptr [rbp-0x58]
+       mov      rsi, qword ptr [rbp-0x78]
        mov      edx, 2
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:TryInsert(System.Nullable`1[int],System.Numerics.Vector`1[float],byte):bool:this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:TryInsert(System.Nullable`1[int],System.Numerics.Vector`1[float],byte):bool:this
-       jmp      SHORT G_M7362_IG08
-						;; size=97 bbWeight=4 PerfScore 126.00
-G_M7362_IG09:
-       mov      rdi, r14
+       mov      rax, gword ptr [rbp-0x88]
+       jmp      SHORT G_M7362_IG05
+						;; size=108 bbWeight=4 PerfScore 133.00
+G_M7362_IG06:
+       mov      rdi, gword ptr [rbp-0x88]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
-       mov      rax, r13
-						;; size=19 bbWeight=0.50 PerfScore 1.88
+       mov      r15, r13
+       jmp      G_M7362_IG11
+						;; size=28 bbWeight=0.50 PerfScore 3.25
+G_M7362_IG07:
+       mov      r12d, dword ptr [r15+0x10]
+       mov      r13, gword ptr [r15+0x08]
+       cmp      dword ptr [r13+0x08], r12d
+       jb       G_M7362_IG17
+       add      r13, 16
+       jmp      SHORT G_M7362_IG09
+						;; size=24 bbWeight=0.50 PerfScore 5.12
+G_M7362_IG08:
+       lea      r13, bword ptr [r15+0x10]
+       mov      r12d, dword ptr [r15+0x08]
+						;; size=8 bbWeight=0.50 PerfScore 1.25
+G_M7362_IG09:
+       mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
+       call     CORINFO_HELP_NEWSFAST
+       mov      r15, rax
+       mov      rdi, r15
+       mov      esi, r12d
+       mov      rdx, r14
+       mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
+       call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
+       test     r12d, r12d
+       jle      SHORT G_M7362_IG11
+       xor      r14d, r14d
+						;; size=47 bbWeight=0.50 PerfScore 3.50
 G_M7362_IG10:
-       add      rsp, 96
-       pop      rbx
-       pop      r13
-       pop      r14
-       pop      r15
-       pop      rbp
-       ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
+       vmovups  ymm0, ymmword ptr [r14+r13]
+       vmovups  ymmword ptr [rbp-0x50], ymm0
+       vmovups  ymmword ptr [rsp], ymm0
+       mov      rdi, gword ptr [rbx+0x08]
+       call     [rbx+0x18]System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:Invoke(System.Numerics.Vector`1[float]):System.Nullable`1[int]:this
+       mov      qword ptr [rbp-0x80], rax
+       vmovups  ymm0, ymmword ptr [rbp-0x50]
+       vmovups  ymmword ptr [rsp], ymm0
+       mov      rdi, r15
+       mov      rsi, qword ptr [rbp-0x80]
+       mov      edx, 2
+       mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:TryInsert(System.Nullable`1[int],System.Numerics.Vector`1[float],byte):bool:this
+       call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:TryInsert(System.Nullable`1[int],System.Numerics.Vector`1[float],byte):bool:this
+       add      r14, 32
+       dec      r12d
+       jne      SHORT G_M7362_IG10
+						;; size=70 bbWeight=3.96 PerfScore 96.03
 G_M7362_IG11:
-       mov      esi, dword ptr [rax+0x10]
-       mov      rdi, gword ptr [rax+0x08]
-       cmp      dword ptr [rdi+0x08], esi
-       jb       G_M7362_IG19
-       add      rdi, 16
-       mov      rdx, rbx
-       mov      rcx, r14
-       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
-       call     [rax]System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
-       nop      
-						;; size=39 bbWeight=0.50 PerfScore 6.12
+       mov      rax, r15
+						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M7362_IG12:
-       add      rsp, 96
+       vzeroupper 
+       add      rsp, 136
        pop      rbx
+       pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
+						;; size=21 bbWeight=0.50 PerfScore 2.62
 G_M7362_IG13:
-       lea      rdi, bword ptr [r13+0x10]
-       mov      esi, dword ptr [r13+0x08]
-       mov      rdx, rbx
-       mov      rcx, r14
-       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
-       call     [rax]System.Linq.Enumerable:SpanToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
-       nop      
-						;; size=27 bbWeight=0.50 PerfScore 3.25
-G_M7362_IG14:
-       add      rsp, 96
-       pop      rbx
-       pop      r13
-       pop      r14
-       pop      r15
-       pop      rbp
-       ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
-G_M7362_IG15:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]
        call     CORINFO_HELP_NEWSFAST
        mov      rbx, rax
        mov      rdi, rbx
        mov      rdx, r14
        xor      esi, esi
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        mov      rax, rbx
 						;; size=41 bbWeight=0.50 PerfScore 2.88
-G_M7362_IG16:
-       add      rsp, 96
+G_M7362_IG14:
+       vzeroupper 
+       add      rsp, 136
        pop      rbx
+       pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
-G_M7362_IG17:
+						;; size=21 bbWeight=0.50 PerfScore 2.62
+G_M7362_IG15:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
-G_M7362_IG18:
+G_M7362_IG16:
        mov      edi, 9
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
-G_M7362_IG19:
+G_M7362_IG17:
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowInvalidOperationException_ConcurrentOperationsNotSupported()
        call     [rax]System.ThrowHelper:ThrowInvalidOperationException_ConcurrentOperationsNotSupported()
        int3     
 						;; size=13 bbWeight=0 PerfScore 0.00
-G_M7362_IG20:
+G_M7362_IG18:
        sub      rsp, 40
 						;; size=4 bbWeight=0 PerfScore 0.00
-G_M7362_IG21:
-       cmp      gword ptr [rbp-0x60], 0
-       je       SHORT G_M7362_IG22
-       mov      rdi, gword ptr [rbp-0x60]
+G_M7362_IG19:
+       cmp      gword ptr [rbp-0x88], 0
+       je       SHORT G_M7362_IG20
+       mov      rdi, gword ptr [rbp-0x88]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
-						;; size=24 bbWeight=0 PerfScore 0.00
-G_M7362_IG22:
+						;; size=30 bbWeight=0 PerfScore 0.00
+G_M7362_IG20:
        nop      
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M7362_IG23:
+G_M7362_IG21:
+       vzeroupper 
        add      rsp, 40
        ret      
-						;; size=5 bbWeight=0 PerfScore 0.00
+						;; size=8 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 565, prolog size 29, PerfScore 173.16, instruction count 148, allocated bytes for code 565 (MethodHash=ba78e33d) for method System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts)
+; Total bytes of code 651, prolog size 34, PerfScore 275.03, instruction count 154, allocated bytes for code 651 (MethodHash=ba78e33d) for method System.Linq.Enumerable:ToDictionary[System.Numerics.Vector`1[float],System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[System.Numerics.Vector`1[float]],System.Func`2[System.Numerics.Vector`1[float],System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],System.Numerics.Vector`1[float]] (FullOpts)
 ; ============================================================

38 (6.95 % of base) - System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]

 ; Assembly listing for method System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 6 single block inlinees; 2 inlinees without PGO data
+; 0 inlinees with PGO data; 7 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T03] (  7,  5.50)     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[double]>
-;  V01 arg1         [V01,T01] (  7, 12   )     ref  ->  rbx         class-hnd single-def <System.Func`2[double,System.Nullable`1[int]]>
-;  V02 arg2         [V02,T04] (  6,  4   )     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]>
-;  V03 loc0         [V03    ] (  3,  2   )     int  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed ld-addr-op
-;  V04 loc1         [V04,T05] (  3,  5   )     ref  ->  r13         class-hnd exact single-def <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
-;  V05 loc2         [V05,T08] (  4,  2   )     ref  ->  rax         class-hnd single-def <double[]>
-;  V06 loc3         [V06,T09] (  4,  2   )     ref  ->  rax         class-hnd single-def <System.Collections.Generic.List`1[double]>
-;  V07 loc4         [V07,T02] (  6,  8.50)     ref  ->  [rbp-0x40]  class-hnd EH-live single-def <System.Collections.Generic.IEnumerator`1[double]>
-;  V08 loc5         [V08,T15] (  3, 12   )  double  ->  [rbp-0x30]  spill-single-def
-;# V09 OutArgs      [V09    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V10 tmp1         [V10,T06] (  3,  3   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
-;  V11 tmp2         [V11,T00] (  2, 16   )  struct ( 8) [rbp-0x38]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
-;* V12 tmp3         [V12    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[double]>
-;* V13 tmp4         [V13    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[double]>
-;* V14 tmp5         [V14    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[double]>
-;  V15 tmp6         [V15,T07] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
-;* V16 tmp7         [V16    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[double]>
-;* V17 tmp8         [V17    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.Span`1[double]>
-;* V18 tmp9         [V18    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.Span`1[double]>
-;  V19 tmp10        [V19,T11] (  3,  1.50)     int  ->  rsi         "Inline stloc first use temp"
-;  V20 tmp11        [V20,T10] (  3,  1.50)     ref  ->  rdi         class-hnd single-def "Inline stloc first use temp" <double[]>
-;* V21 tmp12        [V21    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[double]>
-;* V22 tmp13        [V22    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V23 tmp14        [V23    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[double]>
-;* V24 tmp15        [V24    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[double]>
-;* V25 tmp16        [V25    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
-;* V26 tmp17        [V26    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V27 tmp18        [V27    ] (  0,  0   )   byref  ->  zero-ref    "field V12._reference (fldOffset=0x0)" P-INDEP
-;* V28 tmp19        [V28    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
-;* V29 tmp20        [V29    ] (  0,  0   )   byref  ->  zero-ref    "field V13._reference (fldOffset=0x0)" P-INDEP
-;* V30 tmp21        [V30    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V31 tmp22        [V31    ] (  0,  0   )   byref  ->  zero-ref    "field V14._reference (fldOffset=0x0)" P-INDEP
-;* V32 tmp23        [V32    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
-;  V33 tmp24        [V33,T12] (  2,  1   )   byref  ->  rdi         single-def "field V16._reference (fldOffset=0x0)" P-INDEP
-;  V34 tmp25        [V34,T14] (  2,  1   )     int  ->  rsi         "field V16._length (fldOffset=0x8)" P-INDEP
-;* V35 tmp26        [V35    ] (  0,  0   )   byref  ->  zero-ref    "field V17._reference (fldOffset=0x0)" P-INDEP
-;* V36 tmp27        [V36    ] (  0,  0   )     int  ->  zero-ref    "field V17._length (fldOffset=0x8)" P-INDEP
-;* V37 tmp28        [V37    ] (  0,  0   )   byref  ->  zero-ref    "field V18._reference (fldOffset=0x0)" P-INDEP
-;* V38 tmp29        [V38    ] (  0,  0   )     int  ->  zero-ref    "field V18._length (fldOffset=0x8)" P-INDEP
-;  V39 tmp30        [V39,T13] (  2,  1   )   byref  ->  rdi         single-def "field V21._reference (fldOffset=0x0)" P-INDEP
-;* V40 tmp31        [V40    ] (  0,  0   )     int  ->  zero-ref    "field V21._length (fldOffset=0x8)" P-INDEP
-;* V41 tmp32        [V41    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V23._reference (fldOffset=0x0)" P-INDEP
-;* V42 tmp33        [V42    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
-;* V43 tmp34        [V43    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V24._reference (fldOffset=0x0)" P-INDEP
-;* V44 tmp35        [V44    ] (  0,  0   )     int  ->  zero-ref    "field V24._length (fldOffset=0x8)" P-INDEP
+;  V00 arg0         [V00,T06] ( 10,  7   )     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[double]>
+;  V01 arg1         [V01,T00] (  7, 18.92)     ref  ->  rbx         class-hnd single-def <System.Func`2[double,System.Nullable`1[int]]>
+;  V02 arg2         [V02,T08] (  5,  3.50)     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]>
+;  V03 loc0         [V03,T05] (  5,  9.46)     ref  ->  registers   class-hnd <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
+;  V04 loc1         [V04    ] (  3,  2   )     int  ->  [rbp-0x30]  do-not-enreg[X] addr-exposed ld-addr-op
+;* V05 loc2         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[double]>
+;* V06 loc3         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[double]>
+;* V07 loc4         [V07,T22] (  0,  0   )     int  ->  zero-ref   
+;  V08 loc5         [V08,T25] (  3, 11.88)  double  ->  [rbp-0x38]  spill-single-def
+;  V09 loc6         [V09,T07] (  6,  8.50)     ref  ->  [rbp-0x58]  class-hnd EH-live spill-single-def <System.Collections.Generic.IEnumerator`1[double]>
+;  V10 loc7         [V10,T24] (  3, 12   )  double  ->  [rbp-0x40]  spill-single-def
+;# V11 OutArgs      [V11    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;  V12 tmp1         [V12,T10] (  3,  3   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
+;  V13 tmp2         [V13,T01] (  2, 16   )  struct ( 8) [rbp-0x48]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
+;  V14 tmp3         [V14,T11] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
+;  V15 tmp4         [V15,T02] (  2, 15.84)  struct ( 8) [rbp-0x50]  do-not-enreg[SR] multireg-ret "spilled call-like call argument" <System.Nullable`1[int]>
+;  V16 tmp5         [V16,T12] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]>
+;* V17 tmp6         [V17,T23] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V18 tmp7         [V18    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[double]>
+;* V19 tmp8         [V19    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[double]>
+;* V20 tmp9         [V20    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <double[]>
+;* V21 tmp10        [V21    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[double]>
+;* V22 tmp11        [V22    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.Span`1[double]>
+;* V23 tmp12        [V23    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.Span`1[double]>
+;  V24 tmp13        [V24,T16] (  3,  1.50)     int  ->  r12         "Inline stloc first use temp"
+;  V25 tmp14        [V25,T14] (  3,  1.50)     ref  ->  r13         class-hnd single-def "Inline stloc first use temp" <double[]>
+;* V26 tmp15        [V26    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[double]>
+;* V27 tmp16        [V27    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
+;* V28 tmp17        [V28    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[double]>
+;* V29 tmp18        [V29    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[double]>
+;* V30 tmp19        [V30    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
+;* V31 tmp20        [V31    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
+;  V32 tmp21        [V32,T15] (  3,  1.50)   byref  ->  r13         "field V05._reference (fldOffset=0x0)" P-INDEP
+;  V33 tmp22        [V33,T13] (  4,  2   )     int  ->  r12         "field V05._length (fldOffset=0x8)" P-INDEP
+;  V34 tmp23        [V34,T09] (  2,  4.46)   byref  ->  r13         single-def "field V06._reference (fldOffset=0x0)" P-INDEP
+;  V35 tmp24        [V35,T17] (  3,  1.50)     int  ->  r12         "field V06._length (fldOffset=0x8)" P-INDEP
+;* V36 tmp25        [V36    ] (  0,  0   )   byref  ->  zero-ref    "field V19._reference (fldOffset=0x0)" P-INDEP
+;* V37 tmp26        [V37    ] (  0,  0   )     int  ->  zero-ref    "field V19._length (fldOffset=0x8)" P-INDEP
+;  V38 tmp27        [V38,T19] (  2,  1   )   byref  ->  r13         single-def "field V21._reference (fldOffset=0x0)" P-INDEP
+;  V39 tmp28        [V39,T21] (  2,  1   )     int  ->  r12         "field V21._length (fldOffset=0x8)" P-INDEP
+;* V40 tmp29        [V40    ] (  0,  0   )   byref  ->  zero-ref    "field V22._reference (fldOffset=0x0)" P-INDEP
+;* V41 tmp30        [V41    ] (  0,  0   )     int  ->  zero-ref    "field V22._length (fldOffset=0x8)" P-INDEP
+;* V42 tmp31        [V42    ] (  0,  0   )   byref  ->  zero-ref    "field V23._reference (fldOffset=0x0)" P-INDEP
+;* V43 tmp32        [V43    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
+;  V44 tmp33        [V44,T20] (  2,  1   )   byref  ->  r13         single-def "field V26._reference (fldOffset=0x0)" P-INDEP
+;* V45 tmp34        [V45    ] (  0,  0   )     int  ->  zero-ref    "field V26._length (fldOffset=0x8)" P-INDEP
+;* V46 tmp35        [V46    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V28._reference (fldOffset=0x0)" P-INDEP
+;* V47 tmp36        [V47    ] (  0,  0   )     int  ->  zero-ref    "field V28._length (fldOffset=0x8)" P-INDEP
+;* V48 tmp37        [V48    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V29._reference (fldOffset=0x0)" P-INDEP
+;* V49 tmp38        [V49    ] (  0,  0   )     int  ->  zero-ref    "field V29._length (fldOffset=0x8)" P-INDEP
+;  V50 cse0         [V50,T18] (  3,  1.50)    long  ->  rdi         "CSE #01: moderate"
+;  V51 rat0         [V51,T03] (  4, 12.38)    long  ->  r14         "Strength reduced derived IV"
+;  V52 rat1         [V52,T04] (  4, 12.38)     int  ->  r12         "Trip count IV"
 ;
-; Lcl frame size = 32
+; Lcl frame size = 56
 
 G_M40418_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
+       push     r12
        push     rbx
-       sub      rsp, 32
-       lea      rbp, [rsp+0x40]
+       sub      rsp, 56
+       lea      rbp, [rsp+0x60]
        mov      r15, rdi
        mov      rbx, rsi
        mov      r14, rdx
-						;; size=26 bbWeight=1 PerfScore 6.50
+						;; size=28 bbWeight=1 PerfScore 7.50
 G_M40418_IG02:
        test     r15, r15
-       je       G_M40418_IG14
-       test     rbx, rbx
        je       G_M40418_IG15
-       lea      rsi, [rbp-0x28]
+       test     rbx, rbx
+       je       G_M40418_IG16
+       lea      rsi, [rbp-0x30]
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:TryGetNonEnumeratedCount[double](System.Collections.Generic.IEnumerable`1[double],byref):bool
        call     [rax]System.Linq.Enumerable:TryGetNonEnumeratedCount[double](System.Collections.Generic.IEnumerable`1[double],byref):bool
        test     eax, eax
        je       SHORT G_M40418_IG04
 						;; size=41 bbWeight=1 PerfScore 7.75
 G_M40418_IG03:
-       cmp      dword ptr [rbp-0x28], 0
-       je       G_M40418_IG12
-       mov      rsi, r15
-       mov      rdi, 0xD1FFAB1E      ; double[]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
-       call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
-       test     rax, rax
-       jne      G_M40418_IG10
-       mov      rsi, r15
-       mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.List`1[double]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       test     rax, rax
-       jne      G_M40418_IG08
-						;; size=78 bbWeight=0.50 PerfScore 6.50
+       cmp      dword ptr [rbp-0x30], 0
+       je       G_M40418_IG13
+       mov      rdi, qword ptr [r15]
+       mov      rax, 0xD1FFAB1E      ; double[]
+       cmp      rdi, rax
+       je       G_M40418_IG08
+       mov      rax, 0xD1FFAB1E      ; System.Collections.Generic.List`1[double]
+       cmp      rdi, rax
+       je       G_M40418_IG07
+						;; size=51 bbWeight=0.50 PerfScore 4.00
 G_M40418_IG04:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      rdi, r13
-       mov      esi, dword ptr [rbp-0x28]
+       mov      esi, dword ptr [rbp-0x30]
        mov      rdx, r14
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        mov      rdi, r15
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerable`1[double]:GetEnumerator():System.Collections.Generic.IEnumerator`1[double]:this
        call     [r11]System.Collections.Generic.IEnumerable`1[double]:GetEnumerator():System.Collections.Generic.IEnumerator`1[double]:this
-       mov      r14, rax
-       mov      gword ptr [rbp-0x40], r14
-						;; size=62 bbWeight=0.50 PerfScore 5.50
+       mov      gword ptr [rbp-0x58], rax
+						;; size=59 bbWeight=0.50 PerfScore 5.38
 G_M40418_IG05:
-       mov      rdi, r14
+       mov      rdi, rax
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():bool:this
        call     [r11]System.Collections.IEnumerator:MoveNext():bool:this
        test     eax, eax
        je       SHORT G_M40418_IG06
-       mov      rdi, r14
+       mov      rdi, gword ptr [rbp-0x58]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerator`1[double]:get_Current():double:this
        call     [r11]System.Collections.Generic.IEnumerator`1[double]:get_Current():double:this
-       vmovsd   qword ptr [rbp-0x30], xmm0
+       vmovsd   qword ptr [rbp-0x40], xmm0
        mov      rdi, gword ptr [rbx+0x08]
        call     [rbx+0x18]System.Func`2[double,System.Nullable`1[int]]:Invoke(double):System.Nullable`1[int]:this
-       mov      qword ptr [rbp-0x38], rax
+       mov      qword ptr [rbp-0x48], rax
        mov      rdi, r13
-       mov      rsi, qword ptr [rbp-0x38]
-       vmovsd   xmm0, qword ptr [rbp-0x30]
+       mov      rsi, qword ptr [rbp-0x48]
+       vmovsd   xmm0, qword ptr [rbp-0x40]
        mov      edx, 2
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:TryInsert(System.Nullable`1[int],double,byte):bool:this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:TryInsert(System.Nullable`1[int],double,byte):bool:this
+       mov      rax, gword ptr [rbp-0x58]
        jmp      SHORT G_M40418_IG05
-						;; size=83 bbWeight=4 PerfScore 100.00
+						;; size=88 bbWeight=4 PerfScore 107.00
 G_M40418_IG06:
-       mov      rdi, r14
+       mov      rdi, gword ptr [rbp-0x58]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
-       mov      rax, r13
-						;; size=19 bbWeight=0.50 PerfScore 1.88
+       mov      r15, r13
+       jmp      G_M40418_IG11
+						;; size=25 bbWeight=0.50 PerfScore 3.25
 G_M40418_IG07:
-       add      rsp, 32
-       pop      rbx
-       pop      r13
-       pop      r14
-       pop      r15
-       pop      rbp
-       ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
+       mov      r12d, dword ptr [r15+0x10]
+       mov      r13, gword ptr [r15+0x08]
+       cmp      dword ptr [r13+0x08], r12d
+       jb       G_M40418_IG17
+       add      r13, 16
+       jmp      SHORT G_M40418_IG09
+						;; size=24 bbWeight=0.50 PerfScore 5.12
 G_M40418_IG08:
-       mov      esi, dword ptr [rax+0x10]
-       mov      rdi, gword ptr [rax+0x08]
-       cmp      dword ptr [rdi+0x08], esi
-       jb       G_M40418_IG16
-       add      rdi, 16
-       mov      rdx, rbx
-       mov      rcx, r14
-       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
-       call     [rax]System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
-       nop      
-						;; size=39 bbWeight=0.50 PerfScore 6.12
+       lea      r13, bword ptr [r15+0x10]
+       mov      r12d, dword ptr [r15+0x08]
+						;; size=8 bbWeight=0.50 PerfScore 1.25
 G_M40418_IG09:
-       add      rsp, 32
-       pop      rbx
-       pop      r13
-       pop      r14
-       pop      r15
-       pop      rbp
-       ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
+       mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
+       call     CORINFO_HELP_NEWSFAST
+       mov      r15, rax
+       mov      rdi, r15
+       mov      esi, r12d
+       mov      rdx, r14
+       mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
+       call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
+       test     r12d, r12d
+       jle      SHORT G_M40418_IG11
+       xor      r14d, r14d
+						;; size=47 bbWeight=0.50 PerfScore 3.50
 G_M40418_IG10:
-       lea      rdi, bword ptr [rax+0x10]
-       mov      esi, dword ptr [rax+0x08]
-       mov      rdx, rbx
-       mov      rcx, r14
-       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
-       call     [rax]System.Linq.Enumerable:SpanToDictionary[double,System.Nullable`1[int]](System.ReadOnlySpan`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
-       nop      
-						;; size=26 bbWeight=0.50 PerfScore 3.25
+       vmovsd   xmm0, qword ptr [r14+r13]
+       vmovsd   qword ptr [rbp-0x38], xmm0
+       mov      rdi, gword ptr [rbx+0x08]
+       call     [rbx+0x18]System.Func`2[double,System.Nullable`1[int]]:Invoke(double):System.Nullable`1[int]:this
+       mov      qword ptr [rbp-0x50], rax
+       mov      rdi, r15
+       mov      rsi, qword ptr [rbp-0x50]
+       vmovsd   xmm0, qword ptr [rbp-0x38]
+       mov      edx, 2
+       mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:TryInsert(System.Nullable`1[int],double,byte):bool:this
+       call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:TryInsert(System.Nullable`1[int],double,byte):bool:this
+       add      r14, 8
+       dec      r12d
+       jne      SHORT G_M40418_IG10
+						;; size=60 bbWeight=3.96 PerfScore 80.19
 G_M40418_IG11:
-       add      rsp, 32
+       mov      rax, r15
+						;; size=3 bbWeight=0.50 PerfScore 0.12
+G_M40418_IG12:
+       add      rsp, 56
        pop      rbx
+       pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
-G_M40418_IG12:
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M40418_IG13:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]
        call     CORINFO_HELP_NEWSFAST
        mov      rbx, rax
        mov      rdi, rbx
        mov      rdx, r14
        xor      esi, esi
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        call     [rax]System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double]:.ctor(int,System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):this
        mov      rax, rbx
 						;; size=41 bbWeight=0.50 PerfScore 2.88
-G_M40418_IG13:
-       add      rsp, 32
+G_M40418_IG14:
+       add      rsp, 56
        pop      rbx
+       pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0.50 PerfScore 1.88
-G_M40418_IG14:
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M40418_IG15:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
-G_M40418_IG15:
+G_M40418_IG16:
        mov      edi, 9
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
-G_M40418_IG16:
+G_M40418_IG17:
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowInvalidOperationException_ConcurrentOperationsNotSupported()
        call     [rax]System.ThrowHelper:ThrowInvalidOperationException_ConcurrentOperationsNotSupported()
        int3     
 						;; size=13 bbWeight=0 PerfScore 0.00
-G_M40418_IG17:
+G_M40418_IG18:
        push     rax
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M40418_IG18:
-       cmp      gword ptr [rbp-0x40], 0
-       je       SHORT G_M40418_IG19
-       mov      rdi, gword ptr [rbp-0x40]
+G_M40418_IG19:
+       cmp      gword ptr [rbp-0x58], 0
+       je       SHORT G_M40418_IG20
+       mov      rdi, gword ptr [rbp-0x58]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
 						;; size=24 bbWeight=0 PerfScore 0.00
-G_M40418_IG19:
+G_M40418_IG20:
        nop      
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M40418_IG20:
+G_M40418_IG21:
        add      rsp, 8
        ret      
 						;; size=5 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 547, prolog size 26, PerfScore 147.88, instruction count 144, allocated bytes for code 547 (MethodHash=8baa621d) for method System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts)
+; Total bytes of code 585, prolog size 28, PerfScore 232.19, instruction count 146, allocated bytes for code 585 (MethodHash=8baa621d) for method System.Linq.Enumerable:ToDictionary[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]],System.Collections.Generic.IEqualityComparer`1[System.Nullable`1[int]]):System.Collections.Generic.Dictionary`2[System.Nullable`1[int],double] (FullOpts)
 ; ============================================================

Larger list of diffs: https://gist.github.com/MihuBot/20b4bb3c49b361820ab80cf32ef3b729

[MihuBot]

Top method improvements

-24 (-3.10 % of base) - System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon]

 ; Assembly listing for method System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 10 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 TypeCtx      [V00,T00] ( 17,  8.04)    long  ->  rbx         single-def
-;  V01 arg0         [V01,T01] (  7,  5.50)     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[System.__Canon]>
+;  V01 arg0         [V01,T01] (  8,  6   )     ref  ->  r15         class-hnd single-def <System.Collections.Generic.IEnumerable`1[System.__Canon]>
 ;  V02 arg1         [V02,T02] (  7,  5   )     ref  ->  r14         class-hnd single-def <System.Func`2[System.__Canon,bool]>
 ;  V03 loc0         [V03,T10] (  4,  3   )     ref  ->  rax         class-hnd single-def <System.Linq.Enumerable+Iterator`1[System.__Canon]>
 ;  V04 loc1         [V04,T22] (  4,  2   )     ref  ->  r13         class-hnd single-def <System.__Canon[]>
-;  V05 loc2         [V05,T32] (  3,  1.50)     ref  ->  r13         class-hnd single-def <System.Collections.Generic.List`1[System.__Canon]>
-;# V06 OutArgs      [V06    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V07 tmp1         [V07    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;* V08 tmp2         [V08    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;* V09 tmp3         [V09    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;  V10 tmp4         [V10,T04] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableWhereIterator`1[System.__Canon]>
-;* V11 tmp5         [V11    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;  V12 tmp6         [V12,T05] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListWhereIterator`1[System.__Canon]>
-;* V13 tmp7         [V13    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;  V14 tmp8         [V14,T06] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArrayWhereIterator`1[System.__Canon]>
-;* V15 tmp9         [V15    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;* V16 tmp10        [V16    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;* V17 tmp11        [V17    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V18 tmp12        [V18    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
-;  V19 tmp13        [V19,T07] (  5,  5   )     ref  ->  r12         "Single return block return value"
-;  V20 tmp14        [V20,T09] (  2,  4   )    long  ->  rdi         "argument with side effect"
-;  V21 tmp15        [V21,T30] (  2,  2   )    long  ->  rdi         "argument with side effect"
-;  V22 tmp16        [V22,T31] (  2,  2   )    long  ->  rdi         "argument with side effect"
-;  V23 tmp17        [V23,T21] (  3,  2.20)    long  ->  rdi         "argument with side effect"
-;  V24 rat0         [V24,T08] (  3,  4   )    long  ->  rdi         "runtime lookup"
-;  V25 rat1         [V25,T03] (  3,  5.60)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V26 rat2         [V26,T23] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V27 rat3         [V27,T11] (  3,  2.80)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V28 rat4         [V28,T24] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V29 rat5         [V29,T12] (  3,  2.80)    long  ->  rdi         "spilling expr"
-;  V30 rat6         [V30,T18] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V31 rat7         [V31,T25] (  3,  2   )    long  ->  rsi         "runtime lookup"
-;  V32 rat8         [V32,T13] (  3,  2.80)    long  ->  rsi         "fgMakeTemp is creating a new local variable"
-;  V33 rat9         [V33,T26] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V34 rat10        [V34,T14] (  3,  2.80)    long  ->  rdi         "spilling expr"
-;  V35 rat11        [V35,T19] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V36 rat12        [V36,T27] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V37 rat13        [V37,T15] (  3,  2.80)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V38 rat14        [V38,T28] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V39 rat15        [V39,T16] (  3,  2.80)    long  ->  rdi         "spilling expr"
-;  V40 rat16        [V40,T20] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
-;  V41 rat17        [V41,T29] (  3,  2   )    long  ->  rdi         "runtime lookup"
-;  V42 rat18        [V42,T17] (  3,  2.80)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;* V06 tmp1         [V06    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;* V07 tmp2         [V07    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;  V08 tmp3         [V08,T23] (  3,  2   )    long  ->  rax         "spilling helperCall"
+;  V09 tmp4         [V09,T04] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableWhereIterator`1[System.__Canon]>
+;* V10 tmp5         [V10    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;* V11 tmp6         [V11    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[System.__Canon]>
+;  V12 tmp7         [V12,T05] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListWhereIterator`1[System.__Canon]>
+;* V13 tmp8         [V13    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;  V14 tmp9         [V14,T06] (  5,  5   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArrayWhereIterator`1[System.__Canon]>
+;* V15 tmp10        [V15    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;* V16 tmp11        [V16    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;* V17 tmp12        [V17    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;* V18 tmp13        [V18    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
+;  V19 tmp14        [V19,T07] (  5,  5   )     ref  ->  r12         "Single return block return value"
+;  V20 tmp15        [V20,T09] (  2,  4   )    long  ->  rdi         "argument with side effect"
+;  V21 tmp16        [V21,T30] (  2,  2   )    long  ->  rdi         "argument with side effect"
+;  V22 tmp17        [V22,T21] (  3,  2.20)    long  ->  rdi         "argument with side effect"
+;  V23 rat0         [V23,T08] (  3,  4   )    long  ->  rdi         "runtime lookup"
+;  V24 rat1         [V24,T03] (  3,  5.60)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;  V25 rat2         [V25,T24] (  3,  2   )    long  ->  rdi         "runtime lookup"
+;  V26 rat3         [V26,T11] (  3,  2.80)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;  V27 rat4         [V27,T25] (  3,  2   )    long  ->  rdi         "runtime lookup"
+;  V28 rat5         [V28,T12] (  3,  2.80)    long  ->  rdi         "spilling expr"
+;  V29 rat6         [V29,T18] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;  V30 rat7         [V30,T26] (  3,  2   )    long  ->  rsi         "runtime lookup"
+;  V31 rat8         [V31,T13] (  3,  2.80)    long  ->  rsi         "fgMakeTemp is creating a new local variable"
+;  V32 rat9         [V32,T27] (  3,  2   )    long  ->  rdi         "runtime lookup"
+;  V33 rat10        [V33,T14] (  3,  2.80)    long  ->  rdi         "spilling expr"
+;  V34 rat11        [V34,T19] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;  V35 rat12        [V35,T15] (  3,  2.80)    long  ->  rax         "fgMakeTemp is creating a new local variable"
+;  V36 rat13        [V36,T28] (  3,  2   )    long  ->  rdi         "runtime lookup"
+;  V37 rat14        [V37,T16] (  3,  2.80)    long  ->  rdi         "spilling expr"
+;  V38 rat15        [V38,T20] (  3,  2.24)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
+;  V39 rat16        [V39,T29] (  3,  2   )    long  ->  rdi         "runtime lookup"
+;  V40 rat17        [V40,T17] (  3,  2.80)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
 ;
 ; Lcl frame size = 8
 
 G_M9966_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      qword ptr [rbp-0x30], rdi
        mov      rbx, rdi
        mov      r15, rsi
        mov      r14, rdx
 						;; size=29 bbWeight=1 PerfScore 9.25
 G_M9966_IG02:
        test     r15, r15
        je       G_M9966_IG30
        test     r14, r14
        je       G_M9966_IG31
        mov      rdi, qword ptr [rbx+0x18]
        mov      rdi, qword ptr [rdi+0x10]
        test     rdi, rdi
        je       SHORT G_M9966_IG06
 						;; size=31 bbWeight=1 PerfScore 7.75
 G_M9966_IG03:
        mov      rsi, r15
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        test     rax, rax
        je       SHORT G_M9966_IG07
 						;; size=20 bbWeight=1 PerfScore 4.75
 G_M9966_IG04:
        mov      rdi, rax
        mov      rsi, r14
        mov      rax, qword ptr [rax]
        mov      rax, qword ptr [rax+0x48]
 						;; size=13 bbWeight=0.50 PerfScore 2.25
 G_M9966_IG05:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax+0x08]System.Linq.Enumerable+Iterator`1[System.__Canon]:Where(System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon]:this
 						;; size=18 bbWeight=0.50 PerfScore 3.62
 G_M9966_IG06:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      SHORT G_M9966_IG03
 						;; size=30 bbWeight=0.20 PerfScore 1.20
 G_M9966_IG07:
        mov      rdi, qword ptr [rbx+0x18]
        mov      rdi, qword ptr [rdi+0x18]
        test     rdi, rdi
        je       SHORT G_M9966_IG14
 						;; size=13 bbWeight=0.50 PerfScore 2.62
 G_M9966_IG08:
        mov      rsi, r15
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
        call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
        mov      r13, rax
        test     r13, r13
        je       G_M9966_IG15
        cmp      dword ptr [r13+0x08], 0
        jne      G_M9966_IG24
        mov      rdi, qword ptr [rbx+0x18]
        cmp      qword ptr [rdi+0x08], 64
        jle      G_M9966_IG28
 						;; size=53 bbWeight=0.50 PerfScore 7.50
 G_M9966_IG09:
        mov      rdi, qword ptr [rdi+0x40]
        test     rdi, rdi
        je       G_M9966_IG28
 						;; size=13 bbWeight=0.40 PerfScore 1.30
 G_M9966_IG10:
        mov      rsi, qword ptr [rdi+0x18]
        mov      rsi, qword ptr [rsi+0x10]
        test     rsi, rsi
        je       G_M9966_IG29
 						;; size=17 bbWeight=0.50 PerfScore 2.62
 G_M9966_IG11:
        mov      rdi, rsi
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        mov      r12, gword ptr [rax]
 						;; size=18 bbWeight=0.50 PerfScore 2.75
 G_M9966_IG12:
        mov      rax, r12
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M9966_IG13:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M9966_IG14:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      G_M9966_IG08
 						;; size=33 bbWeight=0.10 PerfScore 0.60
 G_M9966_IG15:
        mov      rdi, qword ptr [rbx+0x18]
-       mov      rdi, qword ptr [rdi+0x20]
-       test     rdi, rdi
+       mov      rax, qword ptr [rdi+0x20]
+       test     rax, rax
        je       SHORT G_M9966_IG19
 						;; size=13 bbWeight=0.50 PerfScore 2.62
 G_M9966_IG16:
-       mov      rsi, r15
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       mov      r13, rax
-       test     r13, r13
-       je       SHORT G_M9966_IG20
+       cmp      qword ptr [r15], rax
+       jne      SHORT G_M9966_IG20
        mov      rdi, qword ptr [rbx+0x18]
        cmp      qword ptr [rdi+0x08], 48
        jle      G_M9966_IG23
-						;; size=38 bbWeight=0.50 PerfScore 5.50
+						;; size=20 bbWeight=0.50 PerfScore 5.00
 G_M9966_IG17:
        mov      rdi, qword ptr [rdi+0x30]
        test     rdi, rdi
        je       G_M9966_IG23
 						;; size=13 bbWeight=0.40 PerfScore 1.30
 G_M9966_IG18:
        call     CORINFO_HELP_NEWSFAST
        mov      r12, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r12+0x10], eax
        lea      rdi, bword ptr [r12+0x18]
-       mov      rsi, r13
+       mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r12+0x20]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M9966_IG12
 						;; size=49 bbWeight=0.50 PerfScore 4.38
 G_M9966_IG19:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
-       mov      rdi, rax
-       jmp      G_M9966_IG16
-						;; size=33 bbWeight=0.10 PerfScore 0.60
+       jmp      SHORT G_M9966_IG16
+						;; size=27 bbWeight=0.10 PerfScore 0.58
 G_M9966_IG20:
        mov      rdi, qword ptr [rbx+0x18]
        mov      rdi, qword ptr [rdi+0x28]
        test     rdi, rdi
        je       SHORT G_M9966_IG22
 						;; size=13 bbWeight=0.50 PerfScore 2.62
 G_M9966_IG21:
        call     CORINFO_HELP_NEWSFAST
        mov      r12, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r12+0x10], eax
        lea      rdi, bword ptr [r12+0x18]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r12+0x20]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M9966_IG12
 						;; size=49 bbWeight=0.50 PerfScore 4.38
 G_M9966_IG22:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      SHORT G_M9966_IG21
 						;; size=30 bbWeight=0.10 PerfScore 0.60
 G_M9966_IG23:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      G_M9966_IG18
 						;; size=33 bbWeight=0.18 PerfScore 1.08
 G_M9966_IG24:
        mov      rdi, qword ptr [rbx+0x18]
        cmp      qword ptr [rdi+0x08], 56
        jle      SHORT G_M9966_IG27
 						;; size=11 bbWeight=0.50 PerfScore 3.00
 G_M9966_IG25:
        mov      rdi, qword ptr [rdi+0x38]
        test     rdi, rdi
        je       SHORT G_M9966_IG27
 						;; size=9 bbWeight=0.40 PerfScore 1.30
 G_M9966_IG26:
        call     CORINFO_HELP_NEWSFAST
        mov      r12, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r12+0x10], eax
        lea      rdi, bword ptr [r12+0x18]
        mov      rsi, r13
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r12+0x20]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M9966_IG12
 						;; size=49 bbWeight=0.50 PerfScore 4.38
 G_M9966_IG27:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      SHORT G_M9966_IG26
 						;; size=30 bbWeight=0.18 PerfScore 1.08
 G_M9966_IG28:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rdi, rax
        jmp      G_M9966_IG10
 						;; size=33 bbWeight=0.18 PerfScore 1.08
 G_M9966_IG29:
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_METHOD
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_METHOD
        mov      rsi, rax
        jmp      G_M9966_IG11
 						;; size=30 bbWeight=0.10 PerfScore 0.58
 G_M9966_IG30:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M9966_IG31:
        mov      edi, 12
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 775, prolog size 29, PerfScore 82.97, instruction count 186, allocated bytes for code 775 (MethodHash=304bd911) for method System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon] (FullOpts)
+; Total bytes of code 751, prolog size 29, PerfScore 82.44, instruction count 181, allocated bytes for code 751 (MethodHash=304bd911) for method System.Linq.Enumerable:Where[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.Func`2[System.__Canon,bool]):System.Collections.Generic.IEnumerable`1[System.__Canon] (FullOpts)
 ; ============================================================

-22 (-5.54 % of base) - System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int]

 ; Assembly listing for method System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 10 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  7,  5.50)     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[int]>
+;  V00 arg0         [V00,T00] (  8,  6   )     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[int]>
 ;  V01 arg1         [V01,T01] (  7,  5   )     ref  ->  r15         class-hnd single-def <System.Func`2[int,bool]>
 ;  V02 loc0         [V02,T06] (  4,  3   )     ref  ->  rax         class-hnd single-def <System.Linq.Enumerable+Iterator`1[int]>
 ;  V03 loc1         [V03,T07] (  4,  2   )     ref  ->  r14         class-hnd single-def <int[]>
-;  V04 loc2         [V04,T08] (  3,  1.50)     ref  ->  r14         class-hnd single-def <System.Collections.Generic.List`1[int]>
-;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V06 tmp1         [V06,T02] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableWhereIterator`1[int]>
-;  V07 tmp2         [V07,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListWhereIterator`1[int]>
-;  V08 tmp3         [V08,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArrayWhereIterator`1[int]>
-;  V09 tmp4         [V09,T05] (  4,  4   )     ref  ->  r13         "Single return block return value"
+;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;  V05 tmp1         [V05,T02] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableWhereIterator`1[int]>
+;* V06 tmp2         [V06    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[int]>
+;  V07 tmp3         [V07,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListWhereIterator`1[int]>
+;  V08 tmp4         [V08,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArrayWhereIterator`1[int]>
+;  V09 tmp5         [V09,T05] (  4,  4   )     ref  ->  r13         "Single return block return value"
 ;
 ; Lcl frame size = 0
 
 G_M4878_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     rbx
        lea      rbp, [rsp+0x20]
        mov      rbx, rdi
        mov      r15, rsi
 						;; size=19 bbWeight=1 PerfScore 6.00
 G_M4878_IG02:
        test     rbx, rbx
        je       G_M4878_IG12
        test     r15, r15
        je       G_M4878_IG13
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+Iterator`1[int]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        test     rax, rax
        jne      G_M4878_IG10
 						;; size=52 bbWeight=1 PerfScore 7.50
 G_M4878_IG03:
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; int[]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
        call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
        mov      r14, rax
        test     r14, r14
-       jne      G_M4878_IG05
-       mov      rsi, rbx
+       jne      SHORT G_M4878_IG05
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.List`1[int]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       mov      r14, rax
-       test     r14, r14
-       jne      SHORT G_M4878_IG04
+       cmp      qword ptr [rbx], rdi
+       je       SHORT G_M4878_IG04
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+IEnumerableWhereIterator`1[int]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M4878_IG06
-						;; size=123 bbWeight=0.50 PerfScore 9.75
+						;; size=101 bbWeight=0.50 PerfScore 9.25
 G_M4878_IG04:
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ListWhereIterator`1[int]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
-       mov      rsi, r14
+       mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M4878_IG06
 						;; size=53 bbWeight=0.50 PerfScore 4.50
 G_M4878_IG05:
        cmp      dword ptr [r14+0x08], 0
        je       SHORT G_M4878_IG08
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ArrayWhereIterator`1[int]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
 						;; size=58 bbWeight=0.50 PerfScore 5.50
 G_M4878_IG06:
        mov      rax, r13
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M4878_IG07:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=9 bbWeight=0.50 PerfScore 1.75
 G_M4878_IG08:
        mov      rax, 0xD1FFAB1E      ; 'System.Int32[]'
 						;; size=10 bbWeight=0.50 PerfScore 0.12
 G_M4878_IG09:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=9 bbWeight=0.50 PerfScore 1.75
 G_M4878_IG10:
        mov      rdi, rax
        mov      rsi, r15
        mov      rax, qword ptr [rax]
        mov      rax, qword ptr [rax+0x48]
 						;; size=13 bbWeight=0.50 PerfScore 2.25
 G_M4878_IG11:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax+0x08]System.Linq.Enumerable+Iterator`1[int]:Where(System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int]:this
 						;; size=12 bbWeight=0.50 PerfScore 3.25
 G_M4878_IG12:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M4878_IG13:
        mov      edi, 12
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 397, prolog size 19, PerfScore 42.50, instruction count 101, allocated bytes for code 397 (MethodHash=7f36ecf1) for method System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int] (FullOpts)
+; Total bytes of code 375, prolog size 19, PerfScore 42.00, instruction count 97, allocated bytes for code 375 (MethodHash=7f36ecf1) for method System.Linq.Enumerable:Where[int](System.Collections.Generic.IEnumerable`1[int],System.Func`2[int,bool]):System.Collections.Generic.IEnumerable`1[int] (FullOpts)
 ; ============================================================

-18 (-3.12 % of base) - System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]]

 ; Assembly listing for method System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 17 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  8,  6   )     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[byte]>
+;  V00 arg0         [V00,T00] (  9,  6.50)     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[byte]>
 ;  V01 arg1         [V01,T01] (  8,  5.50)     ref  ->  r15         class-hnd single-def <System.Func`2[byte,System.Nullable`1[int]]>
 ;  V02 loc0         [V02,T07] (  4,  3   )     ref  ->  r14         class-hnd single-def <System.Linq.Enumerable+Iterator`1[byte]>
 ;  V03 loc1         [V03,T10] (  3,  1.50)     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IList`1[byte]>
 ;  V04 loc2         [V04,T08] (  4,  2   )     ref  ->  r12         class-hnd single-def <byte[]>
-;  V05 loc3         [V05,T11] (  3,  1.50)     ref  ->  r12         class-hnd single-def <System.Collections.Generic.List`1[byte]>
-;# V06 OutArgs      [V06    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V07 tmp1         [V07,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[byte,System.Nullable`1[int]]>
-;  V08 tmp2         [V08,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IListSelectIterator`2[byte,System.Nullable`1[int]]>
-;  V09 tmp3         [V09,T05] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListSelectIterator`2[byte,System.Nullable`1[int]]>
-;  V10 tmp4         [V10,T06] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArraySelectIterator`2[byte,System.Nullable`1[int]]>
-;  V11 tmp5         [V11,T09] (  2,  2   )    long  ->  rax         "VirtualCall through function pointer"
-;* V12 tmp6         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[byte,System.Nullable`1[int]]>
-;  V13 tmp7         [V13,T02] (  6,  6   )     ref  ->  r13         "Single return block return value"
+;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;  V06 tmp1         [V06,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[byte,System.Nullable`1[int]]>
+;  V07 tmp2         [V07,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IListSelectIterator`2[byte,System.Nullable`1[int]]>
+;* V08 tmp3         [V08    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[byte]>
+;  V09 tmp4         [V09,T05] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListSelectIterator`2[byte,System.Nullable`1[int]]>
+;  V10 tmp5         [V10,T06] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArraySelectIterator`2[byte,System.Nullable`1[int]]>
+;  V11 tmp6         [V11,T09] (  2,  2   )    long  ->  rax         "VirtualCall through function pointer"
+;* V12 tmp7         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[byte,System.Nullable`1[int]]>
+;  V13 tmp8         [V13,T02] (  6,  6   )     ref  ->  r13         "Single return block return value"
 ;
 ; Lcl frame size = 8
 
 G_M31837_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      rbx, rdi
        mov      r15, rsi
 						;; size=22 bbWeight=1 PerfScore 8.00
 G_M31837_IG02:
        test     rbx, rbx
        je       G_M31837_IG13
        test     r15, r15
        je       G_M31837_IG14
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+Iterator`1[byte]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        mov      r14, rax
        test     r14, r14
        jne      G_M31837_IG11
 						;; size=55 bbWeight=1 PerfScore 7.75
 G_M31837_IG03:
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.IList`1[byte]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFINTERFACE
        call     [rax]CORINFO_HELP_ISINSTANCEOFINTERFACE
        mov      r14, rax
        test     r14, r14
        jne      SHORT G_M31837_IG04
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+IEnumerableSelectIterator`2[byte,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M31837_IG09
 						;; size=89 bbWeight=0.50 PerfScore 7.12
 G_M31837_IG04:
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; byte[]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
        call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
        mov      r12, rax
        test     r12, r12
        jne      G_M31837_IG06
-       mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.List`1[byte]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       mov      r12, rax
-       test     r12, r12
-       jne      SHORT G_M31837_IG05
+       cmp      qword ptr [rbx], rdi
+       je       SHORT G_M31837_IG05
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+IListSelectIterator`2[byte,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M31837_IG09
-						;; size=126 bbWeight=0.50 PerfScore 9.75
+						;; size=108 bbWeight=0.50 PerfScore 9.25
 G_M31837_IG05:
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ListSelectIterator`2[byte,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
-       mov      rsi, r12
+       mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M31837_IG09
 						;; size=53 bbWeight=0.50 PerfScore 4.50
 G_M31837_IG06:
        cmp      dword ptr [r12+0x08], 0
        je       SHORT G_M31837_IG07
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ArraySelectIterator`2[byte,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, r12
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M31837_IG09
 						;; size=61 bbWeight=0.50 PerfScore 6.50
 G_M31837_IG07:
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M31837_IG15
 						;; size=19 bbWeight=0.50 PerfScore 2.12
 G_M31837_IG08:
        mov      rax, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.Nullable`1[int]]:Value
        mov      r13, gword ptr [rax]
 						;; size=13 bbWeight=0.50 PerfScore 1.12
 G_M31837_IG09:
        mov      rax, r13
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M31837_IG10:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M31837_IG11:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; System.Linq.Enumerable+Iterator`1[byte]
        mov      rdx, 0xD1FFAB1E      ; token handle
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_VIRTUAL_FUNC_PTR
        call     [rax]CORINFO_HELP_VIRTUAL_FUNC_PTR
        mov      rdi, r14
        mov      rsi, r15
 						;; size=41 bbWeight=0.50 PerfScore 2.25
 G_M31837_IG12:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp rax
 						;; size=17 bbWeight=0.50 PerfScore 3.62
 G_M31837_IG13:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M31837_IG14:
        mov      edi, 16
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M31837_IG15:
        mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.Nullable`1[int]]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M31837_IG08
 						;; size=27 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 577, prolog size 22, PerfScore 55.00, instruction count 133, allocated bytes for code 577 (MethodHash=257183a2) for method System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
+; Total bytes of code 559, prolog size 22, PerfScore 54.50, instruction count 129, allocated bytes for code 559 (MethodHash=257183a2) for method System.Linq.Enumerable:Select[byte,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[byte],System.Func`2[byte,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
 ; ============================================================

-18 (-3.12 % of base) - System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]]

 ; Assembly listing for method System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 17 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  8,  6   )     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[double]>
+;  V00 arg0         [V00,T00] (  9,  6.50)     ref  ->  rbx         class-hnd single-def <System.Collections.Generic.IEnumerable`1[double]>
 ;  V01 arg1         [V01,T01] (  8,  5.50)     ref  ->  r15         class-hnd single-def <System.Func`2[double,System.Nullable`1[int]]>
 ;  V02 loc0         [V02,T07] (  4,  3   )     ref  ->  r14         class-hnd single-def <System.Linq.Enumerable+Iterator`1[double]>
 ;  V03 loc1         [V03,T10] (  3,  1.50)     ref  ->  r14         class-hnd single-def <System.Collections.Generic.IList`1[double]>
 ;  V04 loc2         [V04,T08] (  4,  2   )     ref  ->  r12         class-hnd single-def <double[]>
-;  V05 loc3         [V05,T11] (  3,  1.50)     ref  ->  r12         class-hnd single-def <System.Collections.Generic.List`1[double]>
-;# V06 OutArgs      [V06    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V07 tmp1         [V07,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[double,System.Nullable`1[int]]>
-;  V08 tmp2         [V08,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IListSelectIterator`2[double,System.Nullable`1[int]]>
-;  V09 tmp3         [V09,T05] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListSelectIterator`2[double,System.Nullable`1[int]]>
-;  V10 tmp4         [V10,T06] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArraySelectIterator`2[double,System.Nullable`1[int]]>
-;  V11 tmp5         [V11,T09] (  2,  2   )    long  ->  rax         "VirtualCall through function pointer"
-;* V12 tmp6         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[double,System.Nullable`1[int]]>
-;  V13 tmp7         [V13,T02] (  6,  6   )     ref  ->  r13         "Single return block return value"
+;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;  V06 tmp1         [V06,T03] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[double,System.Nullable`1[int]]>
+;  V07 tmp2         [V07,T04] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+IListSelectIterator`2[double,System.Nullable`1[int]]>
+;* V08 tmp3         [V08    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "updating class info" <System.Collections.Generic.List`1[double]>
+;  V09 tmp4         [V09,T05] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ListSelectIterator`2[double,System.Nullable`1[int]]>
+;  V10 tmp5         [V10,T06] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Linq.Enumerable+ArraySelectIterator`2[double,System.Nullable`1[int]]>
+;  V11 tmp6         [V11,T09] (  2,  2   )    long  ->  rax         "VirtualCall through function pointer"
+;* V12 tmp7         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Linq.Enumerable+IEnumerableSelectIterator`2[double,System.Nullable`1[int]]>
+;  V13 tmp8         [V13,T02] (  6,  6   )     ref  ->  r13         "Single return block return value"
 ;
 ; Lcl frame size = 8
 
 G_M51938_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      rbx, rdi
        mov      r15, rsi
 						;; size=22 bbWeight=1 PerfScore 8.00
 G_M51938_IG02:
        test     rbx, rbx
        je       G_M51938_IG13
        test     r15, r15
        je       G_M51938_IG14
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+Iterator`1[double]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        mov      r14, rax
        test     r14, r14
        jne      G_M51938_IG11
 						;; size=55 bbWeight=1 PerfScore 7.75
 G_M51938_IG03:
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.IList`1[double]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFINTERFACE
        call     [rax]CORINFO_HELP_ISINSTANCEOFINTERFACE
        mov      r14, rax
        test     r14, r14
        jne      SHORT G_M51938_IG04
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+IEnumerableSelectIterator`2[double,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M51938_IG09
 						;; size=89 bbWeight=0.50 PerfScore 7.12
 G_M51938_IG04:
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; double[]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
        call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
        mov      r12, rax
        test     r12, r12
        jne      G_M51938_IG06
-       mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.List`1[double]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       mov      r12, rax
-       test     r12, r12
-       jne      SHORT G_M51938_IG05
+       cmp      qword ptr [rbx], rdi
+       je       SHORT G_M51938_IG05
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+IListSelectIterator`2[double,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M51938_IG09
-						;; size=126 bbWeight=0.50 PerfScore 9.75
+						;; size=108 bbWeight=0.50 PerfScore 9.25
 G_M51938_IG05:
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ListSelectIterator`2[double,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
-       mov      rsi, r12
+       mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M51938_IG09
 						;; size=53 bbWeight=0.50 PerfScore 4.50
 G_M51938_IG06:
        cmp      dword ptr [r12+0x08], 0
        je       SHORT G_M51938_IG07
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable+ArraySelectIterator`2[double,System.Nullable`1[int]]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        call     System.Environment:get_CurrentManagedThreadId():int
        mov      dword ptr [r13+0x08], eax
        lea      rdi, bword ptr [r13+0x18]
        mov      rsi, r12
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [r13+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        jmp      SHORT G_M51938_IG09
 						;; size=61 bbWeight=0.50 PerfScore 6.50
 G_M51938_IG07:
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M51938_IG15
 						;; size=19 bbWeight=0.50 PerfScore 2.12
 G_M51938_IG08:
        mov      rax, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.Nullable`1[int]]:Value
        mov      r13, gword ptr [rax]
 						;; size=13 bbWeight=0.50 PerfScore 1.12
 G_M51938_IG09:
        mov      rax, r13
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M51938_IG10:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M51938_IG11:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; System.Linq.Enumerable+Iterator`1[double]
        mov      rdx, 0xD1FFAB1E      ; token handle
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_VIRTUAL_FUNC_PTR
        call     [rax]CORINFO_HELP_VIRTUAL_FUNC_PTR
        mov      rdi, r14
        mov      rsi, r15
 						;; size=41 bbWeight=0.50 PerfScore 2.25
 G_M51938_IG12:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp rax
 						;; size=17 bbWeight=0.50 PerfScore 3.62
 G_M51938_IG13:
        mov      edi, 17
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M51938_IG14:
        mov      edi, 16
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        call     [rax]System.Linq.ThrowHelper:ThrowArgumentNullException(int)
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 G_M51938_IG15:
        mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.Nullable`1[int]]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M51938_IG08
 						;; size=27 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 577, prolog size 22, PerfScore 55.00, instruction count 133, allocated bytes for code 577 (MethodHash=2c71351d) for method System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
+; Total bytes of code 559, prolog size 22, PerfScore 54.50, instruction count 129, allocated bytes for code 559 (MethodHash=2c71351d) for method System.Linq.Enumerable:Select[double,System.Nullable`1[int]](System.Collections.Generic.IEnumerable`1[double],System.Func`2[double,System.Nullable`1[int]]):System.Collections.Generic.IEnumerable`1[System.Nullable`1[int]] (FullOpts)
 ; ============================================================

Note: some changes were skipped as they were too large to fit into a comment.

Larger list of diffs: https://gist.github.com/MihuBot/3a6aeba1542d48876599cc24902ab85d

[MihuBot]

@xtqqczze