[X64] [EgorBo] JIT: Optimize out write barriers for fields in ref-like structs

[MihuBot]

Job completed in 15 minutes.
dotnet/runtime#103503

Diffs

Diffs

Found 277 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 41571980
Total bytes of diff: 41569410
Total bytes of delta: -2570 (-0.01 % of base)
Total relative delta: -16.75
    diff is an improvement.
    relative diff is an improvement.


Top file improvements (bytes):
       -1155 : System.Private.CoreLib.dasm (-0.02 % of base)
        -817 : System.Text.RegularExpressions.dasm (-0.11 % of base)
        -200 : System.Runtime.Numerics.dasm (-0.17 % of base)
         -70 : System.Text.Json.dasm (-0.01 % of base)
         -34 : System.Reflection.Metadata.dasm (-0.01 % of base)
         -31 : System.Security.Cryptography.dasm (-0.00 % of base)
         -28 : System.Private.Uri.dasm (-0.03 % of base)
         -28 : System.Diagnostics.Process.dasm (-0.03 % of base)
         -28 : System.Net.Http.dasm (-0.00 % of base)
         -28 : Microsoft.Extensions.Logging.Abstractions.dasm (-0.04 % of base)
         -26 : System.Web.HttpUtility.dasm (-0.13 % of base)
         -25 : Microsoft.Extensions.DependencyInjection.Abstractions.dasm (-0.04 % of base)
         -20 : System.Net.Mail.dasm (-0.01 % of base)
         -20 : System.Console.dasm (-0.02 % of base)
         -20 : System.Text.Encodings.Web.dasm (-0.08 % of base)
         -20 : System.Private.Xml.dasm (-0.00 % of base)
         -20 : System.Diagnostics.DiagnosticSource.dasm (-0.01 % of base)

17 total files with Code Size differences (17 improved, 0 regressed), 242 unchanged.

Top method improvements (bytes):
        -216 (-4.16 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:ScanRegex():System.Text.RegularExpressions.RegexNode:this (FullOpts) (2 methods)
        -124 (-35.43 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this (FullOpts) (2 methods)
         -64 (-2.00 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:AssignNameSlots():this (FullOpts) (2 methods)
         -43 (-43.88 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex+ValueSplitEnumerator:.ctor(System.Text.RegularExpressions.Regex,System.ReadOnlySpan`1[ushort],int,int,ubyte):this (FullOpts)
         -37 (-34.58 % of base) : System.Private.CoreLib.dasm - System.Threading.ThreadBlockingInfo+Scope:.ctor(System.Object,int,int):this (FullOpts)
         -35 (-16.91 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int,System.IFormatProvider):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[double,long]:FromManaged(double[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[int,long]:FromManaged(int[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[long,long]:FromManaged(long[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[short,long]:FromManaged(short[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.__Canon,long]:FromManaged(System.__Canon[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.Nullable`1[int],long]:FromManaged(System.Nullable`1[int][],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.Numerics.Vector`1[float],long]:FromManaged(System.Numerics.Vector`1[float][],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[ubyte,long]:FromManaged(ubyte[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[double,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[int,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[long,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[short,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[System.Numerics.Vector`1[float],long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[ubyte,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-17.84 % of base) : System.Text.Json.dasm - System.Text.Json.Schema.JsonSchemaExporter+GenerationState:.ctor(System.Text.Json.JsonSerializerOptions,System.Text.Json.Schema.JsonSchemaExporterOptions):this (FullOpts)
         -33 (-24.63 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexWriter:.ctor(System.Text.RegularExpressions.RegexTree,System.Span`1[int],System.Span`1[int]):this (FullOpts)
         -32 (-53.33 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex+ValueMatchEnumerator:.ctor(System.Text.RegularExpressions.Regex,System.ReadOnlySpan`1[ushort],int):this (FullOpts)
         -25 (-69.44 % of base) : Microsoft.Extensions.DependencyInjection.Abstractions.dasm - Microsoft.Extensions.DependencyInjection.ActivatorUtilities+ConstructorMatcher:.ctor(Microsoft.Extensions.DependencyInjection.ActivatorUtilities+ConstructorInfoEx,System.Span`1[System.Object]):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -24 (-7.84 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -24 (-7.84 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -24 (-7.92 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -24 (-7.92 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -24 (-16.22 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions+TryWriteInterpolatedStringHandler:.ctor(int,int,System.Span`1[ushort],System.IFormatProvider,byref):this (FullOpts)
         -24 (-18.46 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int,System.IFormatProvider,System.Span`1[ushort]):this (FullOpts)
         -24 (-16.22 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.Utf8+TryWriteInterpolatedStringHandler:.ctor(int,int,System.Span`1[ubyte],System.IFormatProvider,byref):this (FullOpts)
         -23 (-23.71 % of base) : System.Private.CoreLib.dasm - System.Threading.ThreadBlockingInfo+Scope:.ctor(System.Threading.Lock,int):this (FullOpts)
         -22 (-20.56 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH:RhRethrow(byref,byref) (FullOpts)
         -22 (-23.16 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:StartGroup(System.Text.RegularExpressions.RegexNode):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -20 (-8.06 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -20 (-7.35 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:Grow():this (FullOpts)
         -20 (-7.35 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:Grow(int):this (FullOpts)
         -20 (-7.43 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:GrowCore(uint):this (FullOpts)
         -20 (-6.37 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:NoteCaptureName(System.String,int):this (FullOpts)
         -20 (-10.93 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:PopGroup():this (FullOpts)
         -20 (-8.16 % of base) : System.Reflection.Metadata.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.Uri.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Diagnostics.Process.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Net.Mail.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Security.Cryptography.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Web.HttpUtility.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Console.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.RegularExpressions.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.Encodings.Web.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.Xml.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Net.Http.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Diagnostics.DiagnosticSource.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.CoreLib.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Runtime.Numerics.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : Microsoft.Extensions.Logging.Abstractions.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.Json.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -18 (-35.29 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH+ExInfo:Init(System.Object,byref):this (FullOpts)
         -18 (-39.13 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH+ExInfo:Init(System.Object,ubyte):this (FullOpts)
         -18 (-72.00 % of base) : System.Private.CoreLib.dasm - System.Threading.Lock+Scope:.ctor(System.Threading.Lock,System.Threading.Lock+ThreadId):this (FullOpts)
         -16 (-16.67 % of base) : System.Private.CoreLib.dasm - System.Globalization.TimeSpanParse+TimeSpanRawInfo:Init(System.Globalization.DateTimeFormatInfo):this (FullOpts)
         -16 (-2.69 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:ScanReplacement():System.Text.RegularExpressions.RegexNode:this (FullOpts) (2 methods)
         -15 (-0.48 % of base) : System.Private.CoreLib.dasm - System.DateTimeParse:Lex(int,byref,byref,byref,byref,byref,int):ubyte (FullOpts)
         -14 (-10.94 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH:RhThrowEx(System.Object,byref) (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[double]:.ctor(System.ReadOnlySpan`1[double],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[double]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[int]:.ctor(System.ReadOnlySpan`1[int],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[int]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[long]:.ctor(System.ReadOnlySpan`1[long],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[long]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[short]:.ctor(System.ReadOnlySpan`1[short],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[short]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.__Canon]:.ctor(System.ReadOnlySpan`1[System.__Canon],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.__Canon]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.Nullable`1[int]]:.ctor(System.ReadOnlySpan`1[System.Nullable`1[int]],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.Nullable`1[int]]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.Numerics.Vector`1[float]]:.ctor(System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.Numerics.Vector`1[float]]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[ubyte]:.ctor(System.ReadOnlySpan`1[ubyte],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[ubyte]):this (FullOpts)
         -12 (-13.48 % of base) : System.Private.CoreLib.dasm - System.Reflection.MethodBase+StackAllocatedArguments:.ctor(System.Object,System.Object,System.Object,System.Object):this (FullOpts)
         -12 (-2.44 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:AddGroup():this (FullOpts) (2 methods)
         -11 (-9.48 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int):this (FullOpts)
         -11 (-3.93 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.Utf8DataEncoding:.ctor(System.ReadOnlySpan`1[ushort],System.Span`1[ubyte]):this (FullOpts)
          -9 (-8.33 % of base) : System.Text.Json.dasm - System.Text.Json.Serialization.Metadata.JsonTypeInfo+PropertyHierarchyResolutionState:.ctor(System.Text.Json.JsonSerializerOptions):this (FullOpts)
          -9 (-5.70 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:AddAlternate():this (FullOpts)
          -8 (-6.45 % of base) : System.Private.CoreLib.dasm - System.__DTString:.ctor(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,ubyte):this (FullOpts)
          -8 (-6.78 % of base) : System.Private.CoreLib.dasm - System.__DTString:.ctor(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo):this (FullOpts)
          -8 (-1.64 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[System.__Canon]:Grow(int):this (FullOpts)
          -8 (-1.64 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[System.__Canon]:Grow(int):this (FullOpts)
          -8 (-1.64 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[System.__Canon]:Grow(int):this (FullOpts)
          -8 (-3.24 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH:RhThrowHwEx(uint,byref) (FullOpts)
          -8 (-9.20 % of base) : System.Reflection.Metadata.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)

Top method improvements (percentages):
         -18 (-72.00 % of base) : System.Private.CoreLib.dasm - System.Threading.Lock+Scope:.ctor(System.Threading.Lock,System.Threading.Lock+ThreadId):this (FullOpts)
         -25 (-69.44 % of base) : Microsoft.Extensions.DependencyInjection.Abstractions.dasm - Microsoft.Extensions.DependencyInjection.ActivatorUtilities+ConstructorMatcher:.ctor(Microsoft.Extensions.DependencyInjection.ActivatorUtilities+ConstructorInfoEx,System.Span`1[System.Object]):this (FullOpts)
         -32 (-53.33 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex+ValueMatchEnumerator:.ctor(System.Text.RegularExpressions.Regex,System.ReadOnlySpan`1[ushort],int):this (FullOpts)
         -43 (-43.88 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex+ValueSplitEnumerator:.ctor(System.Text.RegularExpressions.Regex,System.ReadOnlySpan`1[ushort],int,int,ubyte):this (FullOpts)
         -18 (-39.13 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH+ExInfo:Init(System.Object,ubyte):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[double]:.ctor(System.ReadOnlySpan`1[double],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[double]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[int]:.ctor(System.ReadOnlySpan`1[int],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[int]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[long]:.ctor(System.ReadOnlySpan`1[long],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[long]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[short]:.ctor(System.ReadOnlySpan`1[short],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[short]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.__Canon]:.ctor(System.ReadOnlySpan`1[System.__Canon],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.__Canon]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.Nullable`1[int]]:.ctor(System.ReadOnlySpan`1[System.Nullable`1[int]],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.Nullable`1[int]]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[System.Numerics.Vector`1[float]]:.ctor(System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[System.Numerics.Vector`1[float]]):this (FullOpts)
         -13 (-37.14 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.TextSegmentationUtility+Processor`1[ubyte]:.ctor(System.ReadOnlySpan`1[ubyte],System.Text.Unicode.TextSegmentationUtility+DecodeFirstRune`1[ubyte]):this (FullOpts)
        -124 (-35.43 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this (FullOpts) (2 methods)
         -18 (-35.29 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH+ExInfo:Init(System.Object,byref):this (FullOpts)
         -37 (-34.58 % of base) : System.Private.CoreLib.dasm - System.Threading.ThreadBlockingInfo+Scope:.ctor(System.Object,int,int):this (FullOpts)
         -33 (-24.63 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexWriter:.ctor(System.Text.RegularExpressions.RegexTree,System.Span`1[int],System.Span`1[int]):this (FullOpts)
         -23 (-23.71 % of base) : System.Private.CoreLib.dasm - System.Threading.ThreadBlockingInfo+Scope:.ctor(System.Threading.Lock,int):this (FullOpts)
         -22 (-23.16 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:StartGroup(System.Text.RegularExpressions.RegexNode):this (FullOpts)
         -22 (-20.56 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH:RhRethrow(byref,byref) (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[double,long]:FromManaged(double[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[int,long]:FromManaged(int[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[long,long]:FromManaged(long[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[short,long]:FromManaged(short[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.__Canon,long]:FromManaged(System.__Canon[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.Nullable`1[int],long]:FromManaged(System.Nullable`1[int][],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[System.Numerics.Vector`1[float],long]:FromManaged(System.Numerics.Vector`1[float][],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.ArrayMarshaller`2+ManagedToUnmanagedIn[ubyte,long]:FromManaged(ubyte[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[double,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[int,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[long,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[short,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[System.Numerics.Vector`1[float],long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -33 (-18.75 % of base) : System.Private.CoreLib.dasm - System.Runtime.InteropServices.Marshalling.PointerArrayMarshaller`2+ManagedToUnmanagedIn[ubyte,long]:FromManaged(ulong[],System.Span`1[long]):this (FullOpts)
         -24 (-18.46 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int,System.IFormatProvider,System.Span`1[ushort]):this (FullOpts)
          -6 (-18.18 % of base) : System.Web.HttpUtility.dasm - System.Web.Util.HttpEncoder+UrlDecoder:.ctor(System.Span`1[ushort],System.Span`1[ubyte],System.Text.Encoding):this (FullOpts)
         -33 (-17.84 % of base) : System.Text.Json.dasm - System.Text.Json.Schema.JsonSchemaExporter+GenerationState:.ctor(System.Text.Json.JsonSerializerOptions,System.Text.Json.Schema.JsonSchemaExporterOptions):this (FullOpts)
         -35 (-16.91 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int,System.IFormatProvider):this (FullOpts)
         -16 (-16.67 % of base) : System.Private.CoreLib.dasm - System.Globalization.TimeSpanParse+TimeSpanRawInfo:Init(System.Globalization.DateTimeFormatInfo):this (FullOpts)
         -24 (-16.22 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions+TryWriteInterpolatedStringHandler:.ctor(int,int,System.Span`1[ushort],System.IFormatProvider,byref):this (FullOpts)
         -24 (-16.22 % of base) : System.Private.CoreLib.dasm - System.Text.Unicode.Utf8+TryWriteInterpolatedStringHandler:.ctor(int,int,System.Span`1[ubyte],System.IFormatProvider,byref):this (FullOpts)
         -12 (-13.48 % of base) : System.Private.CoreLib.dasm - System.Reflection.MethodBase+StackAllocatedArguments:.ctor(System.Object,System.Object,System.Object,System.Object):this (FullOpts)
          -6 (-11.11 % of base) : System.Reflection.Metadata.dasm - System.Reflection.Metadata.TypeNameParser:.ctor(System.ReadOnlySpan`1[ushort],ubyte,System.Reflection.Metadata.TypeNameParseOptions):this (FullOpts)
         -14 (-10.94 % of base) : System.Private.CoreLib.dasm - System.Runtime.EH:RhThrowEx(System.Object,byref) (FullOpts)
         -20 (-10.93 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:PopGroup():this (FullOpts)
         -11 (-9.48 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:.ctor(int,int):this (FullOpts)
          -8 (-9.20 % of base) : System.Reflection.Metadata.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Private.Uri.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Text.RegularExpressions.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Net.Http.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Private.CoreLib.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Runtime.Numerics.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : Microsoft.Extensions.Logging.Abstractions.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -8 (-9.20 % of base) : System.Text.Json.dasm - System.Text.ValueStringBuilder:.ctor(int):this (FullOpts)
          -6 (-8.70 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:PushGroup():this (FullOpts)
          -9 (-8.33 % of base) : System.Text.Json.dasm - System.Text.Json.Serialization.Metadata.JsonTypeInfo+PropertyHierarchyResolutionState:.ctor(System.Text.Json.JsonSerializerOptions):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Reflection.Metadata.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.Uri.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Diagnostics.Process.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Net.Mail.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Security.Cryptography.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Web.HttpUtility.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Console.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.RegularExpressions.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.Encodings.Web.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.Xml.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Net.Http.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Diagnostics.DiagnosticSource.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Private.CoreLib.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Runtime.Numerics.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : Microsoft.Extensions.Logging.Abstractions.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.16 % of base) : System.Text.Json.dasm - System.Text.ValueStringBuilder:Grow(int):this (FullOpts)
         -20 (-8.06 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[int]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -20 (-8.03 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -24 (-7.92 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -24 (-7.92 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[ubyte]:Grow(int):this (FullOpts)
         -24 (-7.84 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -24 (-7.84 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[short]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[double]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[long]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[System.Nullable`1[int]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Text.RegularExpressions.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -24 (-7.82 % of base) : System.Runtime.Numerics.dasm - System.Collections.Generic.ValueListBuilder`1[System.Numerics.Vector`1[float]]:Grow(int):this (FullOpts)
         -20 (-7.43 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:GrowCore(uint):this (FullOpts)
         -20 (-7.35 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:Grow():this (FullOpts)
         -20 (-7.35 % of base) : System.Private.CoreLib.dasm - System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:Grow(int):this (FullOpts)
          -8 (-6.78 % of base) : System.Private.CoreLib.dasm - System.__DTString:.ctor(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo):this (FullOpts)
          -8 (-6.45 % of base) : System.Private.CoreLib.dasm - System.__DTString:.ctor(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,ubyte):this (FullOpts)
         -20 (-6.37 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:NoteCaptureName(System.String,int):this (FullOpts)
          -9 (-5.70 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexParser:AddAlternate():this (FullOpts)

114 total methods with Code Size differences (114 improved, 0 regressed), 252098 unchanged.

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

Artifacts:

• build-artifacts-main.zip (648 MB)
• build-clr-checked-main.zip (85 MB)
• build-artifacts-pr.zip (649 MB)
• build-clr-checked-pr.zip (85 MB)
• diff-frameworks.txt (35 KB)
• jit-diffs-frameworks.zip (275 MB)

[MihuBot]

Top method improvements

-216 (-4.16 % of base) - System.Text.RegularExpressions.RegexParser:ScanRegex():System.Text.RegularExpressions.RegexNode:this

 ; Assembly listing for method System.Text.RegularExpressions.RegexParser:ScanRegex():System.Text.RegularExpressions.RegexNode:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 47 single block inlinees; 9 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T00] (128,1077   )   byref  ->  rbx         this single-def
 ;  V01 loc0         [V01,T03] ( 28, 588   )  ushort  ->  [rbp-0x2C] 
 ;  V02 loc1         [V02,T44] (  8,  19   )   ubyte  ->  registers  
 ;  V03 loc2         [V03,T76] (  3,   6   )   ubyte  ->  r15        
 ;  V04 loc3         [V04,T29] (  8,  38   )     int  ->  r13        
 ;  V05 loc4         [V05,T33] (  5,  26   )     int  ->  r12        
 ;  V06 loc5         [V06,T77] (  3,   6   )     int  ->  rdx        
 ;  V07 loc6         [V07,T74] (  3,   6   )     ref  ->  r15         class-hnd exact <System.Text.RegularExpressions.RegexNode>
 ;  V08 loc7         [V08,T82] (  2,   4   )     ref  ->  r15         class-hnd exact <System.String>
 ;  V09 loc8         [V09,T26] (  8,  40   )     int  ->  registers  
 ;  V10 loc9         [V10,T11] (  6,  72   )     int  ->  r15        
 ;  V11 loc10        [V11,T10] (  7,  80   )     int  ->  registers  
 ;  V12 loc11        [V12,T28] (  3,  40   )   ubyte  ->  rsi        
 ;# V13 OutArgs      [V13    ] (  1,   1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;  V14 tmp1         [V14,T60] (  5,  10   )     ref  ->  rax         class-hnd exact single-def "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V15 tmp2         [V15,T64] (  2,   8   )     int  ->  rdi         "dup spill"
 ;  V16 tmp3         [V16,T90] (  3,   0   )     ref  ->  r15         class-hnd exact "Single-def Box Helper" <System.Char>
 ;  V17 tmp4         [V17,T93] (  2,   0   )     ref  ->  rdi         class-hnd exact "impImportAndPushBox" <System.String>
 ;  V18 tmp5         [V18,T91] (  3,   0   )     ref  ->  rax        
 ;  V19 tmp6         [V19,T92] (  3,   0   )     ref  ->  r15         class-hnd exact "Single-def Box Helper" <System.Char>
 ;  V20 tmp7         [V20,T94] (  2,   0   )     ref  ->  rdi         class-hnd exact "impImportAndPushBox" <System.String>
 ;* V21 tmp8         [V21    ] (  0,   0   )   byref  ->  zero-ref   
 ;* V22 tmp9         [V22    ] (  0,   0   )   byref  ->  zero-ref   
 ;  V23 tmp10        [V23,T78] (  3,   6   )     int  ->  r15        
 ;  V24 tmp11        [V24,T45] (  4,  16   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V25 tmp12        [V25,T65] (  2,   8   )     int  ->  r14         "dup spill"
 ;  V26 tmp13        [V26,T50] (  3,  12   )     ref  ->  rdi         class-hnd exact "impAppendStmt" <System.String>
 ;* V27 tmp14        [V27    ] (  0,   0   )     ref  ->  zero-ref    class-hnd exact "non-inline candidate call" <System.Text.RegularExpressions.RegexNode>
 ;  V28 tmp15        [V28,T31] (  2,  32   )     int  ->  r15         "dup spill"
 ;  V29 tmp16        [V29,T17] (  3,  48   )     ref  ->  rsi         class-hnd exact "impAppendStmt" <System.String>
 ;  V30 tmp17        [V30,T38] (  3,  24   )     int  ->  rax        
 ;  V31 tmp18        [V31,T40] (  5,  20   )     ref  ->  r13         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;* V32 tmp19        [V32    ] (  0,   0   )   byref  ->  zero-ref   
-;  V33 tmp20        [V33,T41] (  5,  20   )     ref  ->  rsi         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
+;  V33 tmp20        [V33,T41] (  5,  20   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;* V34 tmp21        [V34    ] (  0,   0   )   byref  ->  zero-ref   
-;  V35 tmp22        [V35,T75] (  3,   6   )     ref  ->  rsi        
-;  V36 tmp23        [V36,T42] (  5,  20   )     ref  ->  rsi         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
+;  V35 tmp22        [V35,T75] (  3,   6   )     ref  ->  rax        
+;  V36 tmp23        [V36,T42] (  5,  20   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V37 tmp24        [V37,T51] (  3,  12   )   byref  ->  rdi         "dup spill"
 ;* V38 tmp25        [V38    ] (  0,   0   )   byref  ->  zero-ref   
 ;* V39 tmp26        [V39    ] (  0,   0   )   byref  ->  zero-ref   
 ;  V40 tmp27        [V40,T79] (  3,   6   )     int  ->  r15        
 ;  V41 tmp28        [V41,T46] (  4,  16   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V42 tmp29        [V42,T04] (  2, 512   )     int  ->  rax         "dup spill"
 ;  V43 tmp30        [V43,T14] (  2,  64   )     int  ->  r12         "dup spill"
 ;  V44 tmp31        [V44,T84] (  2,   4   )     int  ->  rdi         "Inlining Arg"
 ;  V45 tmp32        [V45,T61] (  4,   8   )     ref  ->  rax         class-hnd exact single-def "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V46 tmp33        [V46,T62] (  4,   8   )     ref  ->  rax         class-hnd exact single-def "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V47 tmp34        [V47,T85] (  2,   4   )     int  ->  rdi         "Inlining Arg"
 ;  V48 tmp35        [V48,T86] (  2,   4   )     int  ->  rdi         "Inlining Arg"
 ;* V49 tmp36        [V49,T49] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V50 tmp37        [V50,T32] (  0,   0   )  ushort  ->  zero-ref    "Inlining Arg"
 ;* V51 tmp38        [V51    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V52 tmp39        [V52    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V53 tmp40        [V53,T15] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V54 tmp41        [V54,T07] (  0,   0   )  ushort  ->  zero-ref    "Inlining Arg"
 ;* V55 tmp42        [V55    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V56 tmp43        [V56    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V57 tmp44        [V57,T89] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V58 tmp45        [V58,T88] (  0,   0   )  ushort  ->  zero-ref    "Inlining Arg"
 ;* V59 tmp46        [V59    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V60 tmp47        [V60    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;  V61 tmp48        [V61,T80] (  3,   6   )   ubyte  ->  r14         "Inline return value spill temp"
 ;* V62 tmp49        [V62    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V63 tmp50        [V63    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;  V64 tmp51        [V64,T66] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;  V65 tmp52        [V65,T34] (  6,  24   )   byref  ->  rdi         "Inlining Arg"
 ;  V66 tmp53        [V66,T63] (  4,   8   )     int  ->  rax         "Inline stloc first use temp"
 ;* V67 tmp54        [V67    ] (  0,   0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.Span`1[int]>
 ;  V68 tmp55        [V68,T55] (  3,  12   )     int  ->  rsi         "Inlining Arg"
 ;  V69 tmp56        [V69,T47] (  4,  16   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V70 tmp57        [V70,T48] (  4,  16   )     ref  ->  rax         class-hnd exact "NewObj constructor temp" <System.Text.RegularExpressions.RegexNode>
 ;  V71 tmp58        [V71,T67] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;  V72 tmp59        [V72,T68] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;* V73 tmp60        [V73    ] (  0,   0   )     int  ->  zero-ref    "Inlining Arg"
 ;  V74 tmp61        [V74,T43] (  5,  20   )   byref  ->  rdi         "Inlining Arg"
 ;  V75 tmp62        [V75,T56] (  3,  12   )     int  ->  rsi         "Span.get_Item index"
 ;  V76 tmp63        [V76,T52] (  3,  12   )   byref  ->  rdi         "Span.get_Item ptrToSpan"
 ;* V77 tmp64        [V77    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;  V78 tmp65        [V78,T69] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;* V79 tmp66        [V79    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V80 tmp67        [V80    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;  V81 tmp68        [V81,T70] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;* V82 tmp69        [V82    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;  V83 tmp70        [V83,T71] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;  V84 tmp71        [V84,T72] (  2,   8   )     int  ->  rdi         "Inlining Arg"
 ;* V85 tmp72        [V85    ] (  0,   0   )   byref  ->  zero-ref    "field V51._reference (fldOffset=0x0)" P-INDEP
 ;* V86 tmp73        [V86    ] (  0,   0   )     int  ->  zero-ref    "field V51._length (fldOffset=0x8)" P-INDEP
 ;* V87 tmp74        [V87    ] (  0,   0   )   byref  ->  zero-ref    "field V52._reference (fldOffset=0x0)" P-INDEP
 ;* V88 tmp75        [V88    ] (  0,   0   )     int  ->  zero-ref    "field V52._length (fldOffset=0x8)" P-INDEP
 ;* V89 tmp76        [V89    ] (  0,   0   )   byref  ->  zero-ref    "field V55._reference (fldOffset=0x0)" P-INDEP
 ;* V90 tmp77        [V90    ] (  0,   0   )     int  ->  zero-ref    "field V55._length (fldOffset=0x8)" P-INDEP
 ;* V91 tmp78        [V91    ] (  0,   0   )   byref  ->  zero-ref    "field V56._reference (fldOffset=0x0)" P-INDEP
 ;* V92 tmp79        [V92    ] (  0,   0   )     int  ->  zero-ref    "field V56._length (fldOffset=0x8)" P-INDEP
 ;* V93 tmp80        [V93    ] (  0,   0   )   byref  ->  zero-ref    "field V59._reference (fldOffset=0x0)" P-INDEP
 ;* V94 tmp81        [V94    ] (  0,   0   )     int  ->  zero-ref    "field V59._length (fldOffset=0x8)" P-INDEP
 ;* V95 tmp82        [V95    ] (  0,   0   )   byref  ->  zero-ref    "field V60._reference (fldOffset=0x0)" P-INDEP
 ;* V96 tmp83        [V96    ] (  0,   0   )     int  ->  zero-ref    "field V60._length (fldOffset=0x8)" P-INDEP
 ;* V97 tmp84        [V97    ] (  0,   0   )   byref  ->  zero-ref    "field V62._reference (fldOffset=0x0)" P-INDEP
 ;* V98 tmp85        [V98    ] (  0,   0   )     int  ->  zero-ref    "field V62._length (fldOffset=0x8)" P-INDEP
 ;* V99 tmp86        [V99    ] (  0,   0   )   byref  ->  zero-ref    "field V63._reference (fldOffset=0x0)" P-INDEP
 ;* V100 tmp87       [V100    ] (  0,   0   )     int  ->  zero-ref    "field V63._length (fldOffset=0x8)" P-INDEP
 ;  V101 tmp88       [V101,T83] (  2,   4   )   byref  ->  rcx         "field V67._reference (fldOffset=0x0)" P-INDEP
 ;  V102 tmp89       [V102,T87] (  2,   4   )     int  ->  rdx         "field V67._length (fldOffset=0x8)" P-INDEP
 ;  V103 tmp90       [V103,T01] (  3, 768   )     ref  ->  rcx         "arr expr"
 ;  V104 tmp91       [V104,T02] (  3, 768   )     int  ->  rax         "index expr"
 ;  V105 tmp92       [V105,T08] (  3,  96   )     ref  ->  rax         "arr expr"
 ;  V106 tmp93       [V106,T09] (  3,  96   )     int  ->  rdi         "index expr"
 ;  V107 tmp94       [V107,T53] (  3,  12   )     ref  ->  rdi         "arr expr"
 ;  V108 tmp95       [V108,T57] (  3,  12   )     int  ->  rsi         "index expr"
 ;  V109 tmp96       [V109,T54] (  3,  12   )     ref  ->  rdi         "arr expr"
 ;  V110 tmp97       [V110,T73] (  2,   8   )     int  ->  rdi         "argument with side effect"
 ;  V111 tmp98       [V111,T95] (  2,   0   )     ref  ->  rdx         "argument with side effect"
 ;  V112 tmp99       [V112,T96] (  2,   0   )     ref  ->  rdx         "argument with side effect"
 ;  V113 tmp100      [V113,T97] (  2,   0   )     ref  ->  rdx         "argument with side effect"
 ;  V114 tmp101      [V114,T98] (  2,   0   )     ref  ->  rdx         "argument with side effect"
 ;  V115 tmp102      [V115,T18] (  3,  48   )     ref  ->  rcx         "arr expr"
 ;  V116 tmp103      [V116,T22] (  3,  48   )     int  ->  rdx         "index expr"
 ;  V117 tmp104      [V117,T19] (  3,  48   )     ref  ->  rax         "arr expr"
 ;  V118 tmp105      [V118,T23] (  3,  48   )     int  ->  rdi         "index expr"
 ;  V119 tmp106      [V119,T20] (  3,  48   )     ref  ->  rdx         "arr expr"
 ;  V120 tmp107      [V120,T24] (  3,  48   )     int  ->  rcx         "index expr"
 ;  V121 tmp108      [V121,T12] (  2,  64   )     ref  ->  rsi         "argument with side effect"
 ;  V122 tmp109      [V122,T13] (  2,  64   )     ref  ->  [rbp-0x38]  spill-single-def "argument with side effect"
 ;  V123 tmp110      [V123,T99] (  2,   0   )     ref  ->  rdx         "argument with side effect"
 ;  V124 tmp111      [V124,T100] (  2,   0   )     ref  ->  rdx         single-def "argument with side effect"
 ;  V125 cse0        [V125,T81] (  3,   6   )     int  ->  rdi         "CSE #11: conservative"
 ;  V126 cse1        [V126,T05] (  3, 384   )     ref  ->  rcx         "CSE #04: aggressive"
 ;  V127 cse2        [V127,T06] (  3, 384   )     int  ->  rax         "CSE #05: aggressive"
 ;  V128 cse3        [V128,T27] (  5,  40   )     int  ->  rdi         "CSE #18: moderate"
 ;  V129 cse4        [V129,T30] (  4,  32   )     int  ->  rdi         "CSE #22: moderate"
 ;  V130 cse5        [V130,T21] (  3,  48   )     ref  ->  rax         "CSE #02: moderate"
 ;  V131 cse6        [V131,T25] (  3,  48   )     int  ->  rdi         "CSE #03: moderate"
 ;  V132 cse7        [V132,T16] (  4,  48   )     int  ->  rdi         "CSE #25: moderate"
 ;  V133 cse8        [V133,T35] (  3,  24   )     ref  ->  rcx         "CSE #19: conservative"
 ;  V134 cse9        [V134,T36] (  3,  24   )     ref  ->  rax         "CSE #20: conservative"
 ;  V135 cse10       [V135,T39] (  3,  24   )     int  ->  rdi         "CSE #21: conservative"
 ;  V136 cse11       [V136,T37] (  3,  24   )     ref  ->  rsi         "CSE #23: conservative"
 ;  V137 rat0        [V137,T58] (  3,  11.75)     int  ->  r13         "ReplaceWithLclVar is creating a new local variable"
 ;  V138 rat1        [V138,T59] (  3,  11.20)     int  ->  r12         "ReplaceWithLclVar is creating a new local variable"
 ;
 ; Lcl frame size = 24
 
 G_M39122_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        sub      rsp, 24
        lea      rbp, [rsp+0x40]
        mov      rbx, rdi
 						;; size=22 bbWeight=1 PerfScore 7.00
 G_M39122_IG02:
        xor      r15d, r15d
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        and      edi, -2
        mov      byte  ptr [rax+0x2E], 28
        mov      dword ptr [rax+0x28], edi
        mov      rdi, 0xD1FFAB1E
        mov      qword ptr [rax+0x20], rdi
-       lea      rdi, bword ptr [rbx+0x08]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x08], rax
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], 24
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x10]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x10], rax
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], 25
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x18]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x18], rax
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        jge      G_M39122_IG46
-						;; size=147 bbWeight=1 PerfScore 30.75
+						;; size=123 bbWeight=1 PerfScore 28.50
 G_M39122_IG03:
        xor      edi, edi
        xor      r14d, r14d
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanBlank():this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanBlank():this
        mov      r13d, dword ptr [rbx+0x58]
        test     byte  ptr [rbx+0x70], 32
        je       G_M39122_IG09
        jmp      SHORT G_M39122_IG05
 						;; size=36 bbWeight=4 PerfScore 48.00
 G_M39122_IG04:
        inc      dword ptr [rbx+0x58]
 						;; size=3 bbWeight=64 PerfScore 192.00
 G_M39122_IG05:
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        jge      SHORT G_M39122_IG06
        cmp      edi, dword ptr [rax+0x08]
        jae      G_M39122_IG69
        movzx    r12, word  ptr [rax+2*rdi+0x0C]
        cmp      r12d, 124
        jg       SHORT G_M39122_IG04
        mov      edi, r12d
        mov      rax, 0xD1FFAB1E      ; static handle
        cmp      byte  ptr [rdi+rax], 0
        jbe      SHORT G_M39122_IG04
        cmp      r12d, 123
        jne      SHORT G_M39122_IG06
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        call     [rax]System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        test     eax, eax
        je       SHORT G_M39122_IG04
 						;; size=77 bbWeight=16 PerfScore 412.00
 G_M39122_IG06:
        mov      r12d, dword ptr [rbx+0x58]
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanBlank():this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanBlank():this
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        jne      SHORT G_M39122_IG12
 						;; size=31 bbWeight=16 PerfScore 216.00
 G_M39122_IG07:
        mov      eax, 33
        jmp      G_M39122_IG16
 						;; size=10 bbWeight=2 PerfScore 4.50
 G_M39122_IG08:
        inc      dword ptr [rbx+0x58]
 						;; size=3 bbWeight=32 PerfScore 96.00
 G_M39122_IG09:
        mov      eax, dword ptr [rbx+0x58]
        mov      rcx, gword ptr [rbx+0x28]
        cmp      eax, dword ptr [rcx+0x08]
        jge      SHORT G_M39122_IG06
        cmp      eax, dword ptr [rcx+0x08]
        jae      G_M39122_IG69
        mov      edi, eax
        movzx    rax, word  ptr [rcx+2*rdi+0x0C]
        mov      r12d, eax
        cmp      r12d, 124
        jg       SHORT G_M39122_IG08
 						;; size=37 bbWeight=128 PerfScore 2016.00
 G_M39122_IG10:
        mov      edi, r12d
        mov      rax, 0xD1FFAB1E      ; static handle
        cmp      byte  ptr [rdi+rax], 3
        jb       SHORT G_M39122_IG08
 						;; size=19 bbWeight=64 PerfScore 288.00
 G_M39122_IG11:
        cmp      r12d, 123
        jne      SHORT G_M39122_IG06
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        call     [rax]System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        test     eax, eax
        je       SHORT G_M39122_IG08
        jmp      SHORT G_M39122_IG06
 						;; size=27 bbWeight=128 PerfScore 1024.00
 G_M39122_IG12:
        mov      rdi, gword ptr [rbx+0x28]
        mov      esi, dword ptr [rbx+0x58]
        cmp      esi, dword ptr [rdi+0x08]
        jae      G_M39122_IG69
        movzx    rdi, word  ptr [rdi+2*rsi+0x0C]
        mov      eax, edi
        cmp      eax, 124
        jg       SHORT G_M39122_IG13
        mov      edi, eax
        mov      rsi, 0xD1FFAB1E      ; static handle
        movzx    rdi, byte  ptr [rdi+rsi]
        cmp      edi, 3
        jl       SHORT G_M39122_IG13
        cmp      eax, 123
        jg       SHORT G_M39122_IG14
        cmp      edi, 4
        sete     r14b
        movzx    r14, r14b
        jmp      SHORT G_M39122_IG15
 						;; size=68 bbWeight=2 PerfScore 40.00
 G_M39122_IG13:
        mov      dword ptr [rbp-0x2C], 32
        mov      eax, dword ptr [rbp-0x2C]
        jmp      SHORT G_M39122_IG16
 						;; size=12 bbWeight=2 PerfScore 8.00
 G_M39122_IG14:
        xor      r14d, r14d
 						;; size=3 bbWeight=2 PerfScore 0.50
 G_M39122_IG15:
        inc      dword ptr [rbx+0x58]
 						;; size=3 bbWeight=2 PerfScore 6.00
 G_M39122_IG16:
        cmp      r13d, r12d
-       jge      G_M39122_IG19
-						;; size=9 bbWeight=4 PerfScore 5.00
+       jge      SHORT G_M39122_IG19
+						;; size=5 bbWeight=4 PerfScore 5.00
 G_M39122_IG17:
        mov      edx, r12d
        sub      edx, r13d
        test     r14d, r14d
        setne    dil
        movzx    rdi, dil
        sub      edx, edi
        xor      r15d, r15d
        test     edx, edx
        jle      SHORT G_M39122_IG18
        mov      dword ptr [rbp-0x2C], eax
        mov      rdi, rbx
        mov      esi, r13d
        xor      ecx, ecx
        mov      r8, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:AddToConcatenate(int,int,ubyte):this
        call     [r8]System.Text.RegularExpressions.RegexParser:AddToConcatenate(int,int,ubyte):this
        mov      eax, dword ptr [rbp-0x2C]
 						;; size=53 bbWeight=2 PerfScore 19.50
 G_M39122_IG18:
        test     r14d, r14d
        je       SHORT G_M39122_IG19
        mov      dword ptr [rbp-0x2C], eax
        mov      rdi, gword ptr [rbx+0x28]
        lea      esi, [r12-0x01]
        cmp      esi, dword ptr [rdi+0x08]
        jae      G_M39122_IG69
        dec      r12d
        mov      esi, r12d
        movzx    rdi, word  ptr [rdi+2*rsi+0x0C]
        mov      esi, dword ptr [rbx+0x70]
        mov      rdx, gword ptr [rbx+0x30]
        lea      rcx, bword ptr [rbx+0x5C]
        mov      r8, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:CreateOneWithCaseConversion(ushort,int,System.Globalization.CultureInfo,byref):System.Text.RegularExpressions.RegexNode
        call     [r8]System.Text.RegularExpressions.RegexNode:CreateOneWithCaseConversion(ushort,int,System.Globalization.CultureInfo,byref):System.Text.RegularExpressions.RegexNode
-       lea      rdi, bword ptr [rbx+0x20]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x20], rax
        mov      eax, dword ptr [rbp-0x2C]
-						;; size=76 bbWeight=2 PerfScore 43.50
+						;; size=68 bbWeight=2 PerfScore 42.00
 G_M39122_IG19:
        cmp      eax, 63
        ja       SHORT G_M39122_IG22
 						;; size=5 bbWeight=4 PerfScore 5.00
 G_M39122_IG20:
        lea      r13d, [rax-0x20]
        cmp      r13d, 14
        ja       G_M39122_IG30
 						;; size=14 bbWeight=2 PerfScore 3.50
 G_M39122_IG21:
        mov      edi, r13d
        lea      rcx, [reloc @RWD00]
        mov      ecx, dword ptr [rcx+4*rdi]
        lea      rdx, G_M39122_IG02
        add      rcx, rdx
        jmp      rcx
 						;; size=25 bbWeight=1.88 PerfScore 11.25
 G_M39122_IG22:
        lea      r12d, [rax-0x5B]
        cmp      r12d, 3
        ja       SHORT G_M39122_IG24
 						;; size=10 bbWeight=2 PerfScore 3.50
 G_M39122_IG23:
        mov      edi, r12d
        lea      rax, [reloc @RWD60]
        mov      eax, dword ptr [rax+4*rdi]
        lea      rcx, G_M39122_IG02
        add      rax, rcx
        jmp      rax
 						;; size=25 bbWeight=1.60 PerfScore 9.60
 G_M39122_IG24:
        cmp      eax, 123
        je       G_M39122_IG34
        cmp      eax, 124
        jne      G_M39122_IG43
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:AddAlternate():this
        call     [rax]System.Text.RegularExpressions.RegexParser:AddAlternate():this
        jmp      G_M39122_IG45
 						;; size=38 bbWeight=2 PerfScore 16.00
 G_M39122_IG25:
        test     byte  ptr [rbx+0x70], 2
        jne      SHORT G_M39122_IG26
        mov      r15d, 18
        jmp      SHORT G_M39122_IG27
 						;; size=14 bbWeight=2 PerfScore 12.50
 G_M39122_IG26:
        mov      r15d, 14
 						;; size=6 bbWeight=2 PerfScore 0.50
 G_M39122_IG27:
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], r15b
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x20]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x20], rax
        jmp      G_M39122_IG43
-						;; size=42 bbWeight=2 PerfScore 18.00
+						;; size=34 bbWeight=2 PerfScore 16.50
 G_M39122_IG28:
        mov      edi, dword ptr [rbx+0x58]
        mov      rsi, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rsi+0x08]
        je       G_M39122_IG62
        mov      rdi, rbx
        xor      esi, esi
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanBackslash(ubyte):System.Text.RegularExpressions.RegexNode:this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanBackslash(ubyte):System.Text.RegularExpressions.RegexNode:this
-       lea      rdi, bword ptr [rbx+0x20]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x20], rax
        jmp      G_M39122_IG43
-						;; size=50 bbWeight=2 PerfScore 31.00
+						;; size=42 bbWeight=2 PerfScore 29.50
 G_M39122_IG29:
        mov      esi, dword ptr [rbx+0x70]
        and      esi, 1
        mov      rdi, rbx
        xor      edx, edx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanCharClass(ubyte,ubyte):System.Text.RegularExpressions.RegexCharClass:this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanCharClass(ubyte,ubyte):System.Text.RegularExpressions.RegexCharClass:this
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexCharClass:ToStringClass():System.String:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.RegularExpressions.RegexCharClass:ToStringClass():System.String:this
        mov      r15, rax
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      edi, dword ptr [rbx+0x70]
        and      edi, -2
        mov      byte  ptr [r13+0x2E], 11
        mov      dword ptr [r13+0x28], edi
        lea      rdi, bword ptr [r13+0x10]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
-       lea      rdi, bword ptr [rbx+0x20]
-       mov      rsi, r13
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x20], r13
        jmp      G_M39122_IG43
-						;; size=105 bbWeight=2 PerfScore 48.00
+						;; size=97 bbWeight=2 PerfScore 46.50
 G_M39122_IG30:
        cmp      eax, 63
        je       SHORT G_M39122_IG34
        jmp      G_M39122_IG43
 						;; size=10 bbWeight=2 PerfScore 6.50
 G_M39122_IG31:
        test     byte  ptr [rbx+0x70], 16
        jne      SHORT G_M39122_IG32
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
-       mov      rsi, rax
        mov      edi, dword ptr [rbx+0x70]
        and      edi, -2
-       mov      byte  ptr [rsi+0x2E], 10
-       mov      dword ptr [rsi+0x28], edi
-       mov      word  ptr [rsi+0x2C], 10
+       mov      byte  ptr [rax+0x2E], 10
+       mov      dword ptr [rax+0x28], edi
+       mov      word  ptr [rax+0x2C], 10
        jmp      SHORT G_M39122_IG33
-						;; size=45 bbWeight=2 PerfScore 25.50
+						;; size=42 bbWeight=2 PerfScore 25.00
 G_M39122_IG32:
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
-       mov      rsi, rax
        mov      edi, dword ptr [rbx+0x70]
        and      edi, -2
-       mov      byte  ptr [rsi+0x2E], 11
-       mov      dword ptr [rsi+0x28], edi
+       mov      byte  ptr [rax+0x2E], 11
+       mov      dword ptr [rax+0x28], edi
        mov      rdi, 0xD1FFAB1E      ; ''
-       mov      gword ptr [rsi+0x10], rdi
-						;; size=45 bbWeight=2 PerfScore 14.00
+       mov      gword ptr [rax+0x10], rdi
+						;; size=42 bbWeight=2 PerfScore 13.50
 G_M39122_IG33:
-       lea      rdi, bword ptr [rbx+0x20]
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x20], rax
        jmp      G_M39122_IG43
-						;; size=14 bbWeight=2 PerfScore 7.00
+						;; size=9 bbWeight=2 PerfScore 6.00
 G_M39122_IG34:
        cmp      gword ptr [rbx+0x20], 0
        je       G_M39122_IG63
        dec      dword ptr [rbx+0x58]
        jmp      G_M39122_IG43
 						;; size=19 bbWeight=2 PerfScore 18.00
 G_M39122_IG35:
        cmp      gword ptr [rbx], 0
        je       G_M39122_IG66
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:AddGroup():this
        call     [rax]System.Text.RegularExpressions.RegexParser:AddGroup():this
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:PopGroup():this
        call     [rax]System.Text.RegularExpressions.RegexParser:PopGroup():this
        lea      rdi, bword ptr [rbx+0x78]
        dec      dword ptr [rdi+0x08]
        mov      esi, dword ptr [rdi+0x08]
        add      rdi, 16
        cmp      esi, dword ptr [rdi+0x08]
        jae      G_M39122_IG69
        mov      rdi, bword ptr [rdi]
        mov      edi, dword ptr [rdi+4*rsi]
        mov      dword ptr [rbx+0x70], edi
        cmp      gword ptr [rbx+0x20], 0
        jne      G_M39122_IG43
        jmp      G_M39122_IG45
 						;; size=88 bbWeight=2 PerfScore 63.50
 G_M39122_IG36:
        lea      rdi, bword ptr [rbx+0x78]
        mov      esi, dword ptr [rbx+0x70]
        mov      eax, dword ptr [rdi+0x08]
        mov      rcx, bword ptr [rdi+0x10]
        mov      edx, dword ptr [rdi+0x18]
        cmp      eax, edx
        jae      SHORT G_M39122_IG37
        mov      edx, eax
        mov      dword ptr [rcx+4*rdx], esi
        inc      eax
        mov      dword ptr [rdi+0x08], eax
        jmp      SHORT G_M39122_IG38
 						;; size=33 bbWeight=2 PerfScore 28.50
 G_M39122_IG37:
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.ValueListBuilder`1[int]:AddWithResize(int):this
        call     [rax]System.Collections.Generic.ValueListBuilder`1[int]:AddWithResize(int):this
 						;; size=12 bbWeight=2 PerfScore 6.50
 G_M39122_IG38:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanGroupOpen():System.Text.RegularExpressions.RegexNode:this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanGroupOpen():System.Text.RegularExpressions.RegexNode:this
        mov      r15, rax
        test     r15, r15
        je       G_M39122_IG39
        mov      rdi, gword ptr [rbx+0x08]
        lea      rdi, bword ptr [rdi+0x18]
        mov      rsi, gword ptr [rbx]
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, gword ptr [rbx+0x10]
        lea      rdi, bword ptr [rdi+0x18]
        mov      rsi, gword ptr [rbx+0x08]
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, gword ptr [rbx+0x18]
        lea      rdi, bword ptr [rdi+0x18]
        mov      rsi, gword ptr [rbx+0x10]
        call     CORINFO_HELP_ASSIGN_REF
-       mov      rsi, gword ptr [rbx+0x18]
-       mov      rdi, rbx
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-       lea      rdi, bword ptr [rbx+0x08]
-       mov      rsi, r15
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      rdi, gword ptr [rbx+0x18]
+       mov      gword ptr [rbx], rdi
+       mov      gword ptr [rbx+0x08], r15
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], 24
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x10]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x10], rax
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], 25
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x18]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
+       mov      gword ptr [rbx+0x18], rax
        jmp      G_M39122_IG45
-						;; size=180 bbWeight=2 PerfScore 85.00
+						;; size=151 bbWeight=2 PerfScore 80.00
 G_M39122_IG39:
        lea      rdi, bword ptr [rbx+0x78]
        dec      dword ptr [rdi+0x08]
        jmp      G_M39122_IG45
 						;; size=12 bbWeight=2 PerfScore 11.00
 G_M39122_IG40:
        test     byte  ptr [rbx+0x70], 2
        jne      SHORT G_M39122_IG41
        mov      r15d, 20
        jmp      SHORT G_M39122_IG42
 						;; size=14 bbWeight=2 PerfScore 12.50
 G_M39122_IG41:
        mov      r15d, 15
 						;; size=6 bbWeight=2 PerfScore 0.50
 G_M39122_IG42:
        mov      rdi, 0xD1FFAB1E      ; System.Text.RegularExpressions.RegexNode
        call     CORINFO_HELP_NEWSFAST
        mov      edi, dword ptr [rbx+0x70]
        mov      byte  ptr [rax+0x2E], r15b
        mov      dword ptr [rax+0x28], edi
-       lea      rdi, bword ptr [rbx+0x20]
-       mov      rsi, rax
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-						;; size=37 bbWeight=2 PerfScore 14.00
+       mov      gword ptr [rbx+0x20], rax
+						;; size=29 bbWeight=2 PerfScore 12.50
 G_M39122_IG43:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanBlank():this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanBlank():this
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        je       SHORT G_M39122_IG44
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        call     [rax]System.Text.RegularExpressions.RegexParser:IsTrueQuantifier():ubyte:this
        mov      r14d, eax
        test     r14d, r14d
        jne      SHORT G_M39122_IG48
 						;; size=50 bbWeight=2 PerfScore 33.00
 G_M39122_IG44:
        mov      rdi, gword ptr [rbx+0x18]
        mov      rsi, gword ptr [rbx+0x20]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        xor      rdi, rdi
        mov      gword ptr [rbx+0x20], rdi
 						;; size=28 bbWeight=2 PerfScore 23.00
 G_M39122_IG45:
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        mov      r15d, r14d
        jl       G_M39122_IG03
 						;; size=19 bbWeight=4 PerfScore 33.00
 G_M39122_IG46:
        cmp      gword ptr [rbx], 0
        jne      G_M39122_IG68
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:AddGroup():this
        call     [rax]System.Text.RegularExpressions.RegexParser:AddGroup():this
        mov      rdi, gword ptr [rbx+0x20]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:FinalOptimize():System.Text.RegularExpressions.RegexNode:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.RegularExpressions.RegexNode:FinalOptimize():System.Text.RegularExpressions.RegexNode:this
        nop      
 						;; size=44 bbWeight=1 PerfScore 16.00
 G_M39122_IG47:
        add      rsp, 24
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
 G_M39122_IG48:
        mov      rdi, gword ptr [rbx+0x28]
        mov      r13d, dword ptr [rbx+0x58]
        lea      eax, [r13+0x01]
        mov      dword ptr [rbx+0x58], eax
        cmp      r13d, dword ptr [rdi+0x08]
        jae      G_M39122_IG69
        mov      eax, r13d
        movzx    rax, word  ptr [rdi+2*rax+0x0C]
        mov      r12d, eax
        cmp      gword ptr [rbx+0x20], 0
        je       SHORT G_M39122_IG45
 						;; size=43 bbWeight=2 PerfScore 32.00
 G_M39122_IG49:
        xor      r15d, r15d
        xor      r13d, r13d
        cmp      r12d, 43
        ja       G_M39122_IG55
 						;; size=16 bbWeight=16 PerfScore 28.00
 G_M39122_IG50:
        cmp      r12d, 42
        je       SHORT G_M39122_IG51
        cmp      r12d, 43
        jne      SHORT G_M39122_IG52
        mov      r15d, 1
 						;; size=18 bbWeight=8 PerfScore 22.00
 G_M39122_IG51:
        mov      r13d, 0xD1FFAB1E
 						;; size=6 bbWeight=8 PerfScore 2.00
 G_M39122_IG52:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanBlank():this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanBlank():this
        xor      esi, esi
        mov      edi, dword ptr [rbx+0x58]
        mov      rdx, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rdx+0x08]
        jge      SHORT G_M39122_IG54
 						;; size=29 bbWeight=16 PerfScore 188.00
 G_M39122_IG53:
        mov      rdx, gword ptr [rbx+0x28]
        mov      ecx, edi
        cmp      ecx, dword ptr [rdx+0x08]
        jae      G_M39122_IG69
        cmp      word  ptr [rdx+2*rcx+0x0C], 63
        jne      SHORT G_M39122_IG54
        inc      edi
        mov      dword ptr [rbx+0x58], edi
        mov      esi, 1
 						;; size=33 bbWeight=8 PerfScore 94.00
 G_M39122_IG54:
        cmp      r15d, r13d
        jg       G_M39122_IG67
        mov      rax, gword ptr [rbx+0x18]
        mov      gword ptr [rbp-0x38], rax
        mov      rdi, gword ptr [rbx+0x20]
        mov      edx, r15d
        mov      ecx, r13d
        mov      r8, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:MakeQuantifier(ubyte,int,int):System.Text.RegularExpressions.RegexNode:this
        cmp      dword ptr [rdi], edi
        call     [r8]System.Text.RegularExpressions.RegexNode:MakeQuantifier(ubyte,int,int):System.Text.RegularExpressions.RegexNode:this
        mov      rsi, rax
        mov      rdi, gword ptr [rbp-0x38]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        xor      rdi, rdi
        mov      gword ptr [rbx+0x20], rdi
        cmp      gword ptr [rbx+0x20], 0
        jne      G_M39122_IG49
        jmp      G_M39122_IG45
 						;; size=85 bbWeight=16 PerfScore 444.00
 G_M39122_IG55:
        cmp      r12d, 63
        je       SHORT G_M39122_IG56
        cmp      r12d, 123
        jne      G_M39122_IG52
        mov      r13d, dword ptr [rbx+0x58]
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanDecimal():int:this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanDecimal():int:this
        mov      r15d, eax
        mov      eax, r15d
        mov      edi, dword ptr [rbx+0x58]
        cmp      r13d, edi
        jge      SHORT G_M39122_IG59
        mov      rcx, gword ptr [rbx+0x28]
        cmp      dword ptr [rcx+0x08], edi
        jle      SHORT G_M39122_IG59
        mov      edx, edi
        cmp      edx, dword ptr [rcx+0x08]
        jae      G_M39122_IG69
        cmp      word  ptr [rcx+2*rdx+0x0C], 44
        jne      SHORT G_M39122_IG59
        inc      edi
        mov      dword ptr [rbx+0x58], edi
        mov      edi, dword ptr [rbx+0x58]
        mov      rax, gword ptr [rbx+0x28]
        cmp      edi, dword ptr [rax+0x08]
        je       SHORT G_M39122_IG57
        cmp      edi, dword ptr [rax+0x08]
        jae      G_M39122_IG69
        cmp      word  ptr [rax+2*rdi+0x0C], 125
        je       SHORT G_M39122_IG57
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:ScanDecimal():int:this
        call     [rax]System.Text.RegularExpressions.RegexParser:ScanDecimal():int:this
        jmp      SHORT G_M39122_IG58
 						;; size=128 bbWeight=8 PerfScore 390.00
 G_M39122_IG56:
        mov      r13d, 1
        jmp      G_M39122_IG52
 						;; size=11 bbWeight=8 PerfScore 18.00
 G_M39122_IG57:
        mov      eax, 0xD1FFAB1E
 						;; size=5 bbWeight=8 PerfScore 2.00
 G_M39122_IG58:
        mov      edi, eax
        mov      eax, edi
 						;; size=4 bbWeight=8 PerfScore 4.00
 G_M39122_IG59:
        mov      edi, dword ptr [rbx+0x58]
        cmp      r13d, edi
        je       SHORT G_M39122_IG60
        mov      rsi, gword ptr [rbx+0x28]
        cmp      dword ptr [rsi+0x08], edi
        je       SHORT G_M39122_IG60
        lea      ecx, [rdi+0x01]
        mov      dword ptr [rbx+0x58], ecx
        cmp      edi, dword ptr [rsi+0x08]
        jae      G_M39122_IG69
        cmp      word  ptr [rsi+2*rdi+0x0C], 125
        je       SHORT G_M39122_IG61
 						;; size=40 bbWeight=8 PerfScore 150.00
 G_M39122_IG60:
        mov      rdi, gword ptr [rbx+0x18]
        mov      rsi, gword ptr [rbx+0x20]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.RegularExpressions.RegexNode:AddChild(System.Text.RegularExpressions.RegexNode):this
        xor      rdi, rdi
        mov      gword ptr [rbx+0x20], rdi
        dec      r13d
        mov      dword ptr [rbx+0x58], r13d
        jmp      G_M39122_IG45
 						;; size=40 bbWeight=2 PerfScore 29.50
 G_M39122_IG61:
        mov      r13d, eax
        jmp      G_M39122_IG52
 						;; size=8 bbWeight=4 PerfScore 9.00
 G_M39122_IG62:
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_UnescapedEndingBackslash():System.String
        call     [rax]System.SR:get_UnescapedEndingBackslash():System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 13
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        mov      rdi, rax
        call     CORINFO_HELP_THROW
        int3     
 						;; size=44 bbWeight=0 PerfScore 0.00
 G_M39122_IG63:
        test     r15d, r15d
        je       SHORT G_M39122_IG64
        mov      dword ptr [rbp-0x2C], eax
        mov      rdi, 0xD1FFAB1E      ; System.Char
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        mov      rdi, 0xD1FFAB1E      ; 'NestedQuantifiersNotParenthesized'
        mov      rax, 0xD1FFAB1E      ; code for System.SR:GetResourceString(System.String):System.String
        call     [rax]System.SR:GetResourceString(System.String):System.String
        mov      rdi, rax
        mov      r12d, dword ptr [rbp-0x2C]
        mov      word  ptr [r15+0x08], r12w
        mov      rsi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.SR:Format(System.String,System.Object):System.String
        call     [rax]System.SR:Format(System.String,System.Object):System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 28
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        jmp      SHORT G_M39122_IG65
 						;; size=100 bbWeight=0 PerfScore 0.00
 G_M39122_IG64:
        mov      dword ptr [rbp-0x2C], eax
        mov      rdi, 0xD1FFAB1E      ; System.Char
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        mov      rdi, 0xD1FFAB1E      ; 'QuantifierAfterNothing'
        mov      rax, 0xD1FFAB1E      ; code for System.SR:GetResourceString(System.String):System.String
        call     [rax]System.SR:GetResourceString(System.String):System.String
        mov      rdi, rax
        mov      r12d, dword ptr [rbp-0x2C]
        mov      word  ptr [r15+0x08], r12w
        mov      rsi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.SR:Format(System.String,System.Object):System.String
        call     [rax]System.SR:Format(System.String,System.Object):System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 29
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
 						;; size=93 bbWeight=0 PerfScore 0.00
 G_M39122_IG65:
        mov      rdi, rax
        call     CORINFO_HELP_THROW
        int3     
 						;; size=9 bbWeight=0 PerfScore 0.00
 G_M39122_IG66:
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_InsufficientOpeningParentheses():System.String
        call     [rax]System.SR:get_InsufficientOpeningParentheses():System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 30
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        mov      rdi, rax
        call     CORINFO_HELP_THROW
        int3     
 						;; size=44 bbWeight=0 PerfScore 0.00
 G_M39122_IG67:
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_ReversedQuantifierRange():System.String
        call     [rax]System.SR:get_ReversedQuantifierRange():System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 27
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        mov      rdi, rax
        call     CORINFO_HELP_THROW
        int3     
 						;; size=44 bbWeight=0 PerfScore 0.00
 G_M39122_IG68:
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_InsufficientClosingParentheses():System.String
        call     [rax]System.SR:get_InsufficientClosingParentheses():System.String
        mov      rdx, rax
        mov      rdi, rbx
        mov      esi, 26
        mov      rax, 0xD1FFAB1E      ; code for System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        call     [rax]System.Text.RegularExpressions.RegexParser:MakeException(int,System.String):System.Text.RegularExpressions.RegexParseException:this
        mov      rdi, rax
        call     CORINFO_HELP_THROW
        int3     
 						;; size=44 bbWeight=0 PerfScore 0.00
 G_M39122_IG69:
        call     CORINFO_HELP_RNGCHKFAIL
        int3     
 						;; size=6 bbWeight=0 PerfScore 0.00
 RWD00  	dd	G_M39122_IG45 - G_M39122_IG02
        	dd	G_M39122_IG46 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG40 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG36 - G_M39122_IG02
        	dd	G_M39122_IG35 - G_M39122_IG02
        	dd	G_M39122_IG34 - G_M39122_IG02
        	dd	G_M39122_IG34 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG31 - G_M39122_IG02
 RWD60  	dd	G_M39122_IG29 - G_M39122_IG02
        	dd	G_M39122_IG28 - G_M39122_IG02
        	dd	G_M39122_IG43 - G_M39122_IG02
        	dd	G_M39122_IG25 - G_M39122_IG02
 
 
-; Total bytes of code 2491, prolog size 22, PerfScore 6429.85, instruction count 615, allocated bytes for code 2491 (MethodHash=7576672d) for method System.Text.RegularExpressions.RegexParser:ScanRegex():System.Text.RegularExpressions.RegexNode:this (FullOpts)
+; Total bytes of code 2383, prolog size 22, PerfScore 6413.10, instruction count 589, allocated bytes for code 2383 (MethodHash=7576672d) for method System.Text.RegularExpressions.RegexParser:ScanRegex():System.Text.RegularExpressions.RegexNode:this (FullOpts)

-124 (-35.43 % of base) - System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this

 ; Assembly listing for method System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 1 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] ( 23, 23   )   byref  ->  rbx         this single-def
+;  V00 this         [V00,T00] ( 23, 23   )   byref  ->  rdi         this single-def
 ;  V01 arg1         [V01,T02] (  3,  3   )     ref  ->  rsi         class-hnd single-def <System.String>
-;  V02 arg2         [V02,T05] (  3,  3   )     int  ->  r13         single-def
-;  V03 arg3         [V03,T03] (  3,  3   )     ref  ->  r15         class-hnd single-def <System.Globalization.CultureInfo>
-;  V04 arg4         [V04,T04] (  3,  3   )     ref  ->  r14         class-hnd single-def <System.Collections.Hashtable>
-;  V05 arg5         [V05,T06] (  3,  3   )     int  ->  r12         single-def
+;  V02 arg2         [V02,T05] (  3,  3   )     int  ->  rdx         single-def
+;  V03 arg3         [V03,T03] (  3,  3   )     ref  ->  rcx         class-hnd single-def <System.Globalization.CultureInfo>
+;  V04 arg4         [V04,T04] (  3,  3   )     ref  ->   r8         class-hnd single-def <System.Collections.Hashtable>
+;  V05 arg5         [V05,T06] (  3,  3   )     int  ->   r9         single-def
 ;  V06 arg6         [V06,T07] (  1,  1   )     ref  ->  [rbp+0x10]  class-hnd single-def <System.Collections.Hashtable>
 ;* V07 arg7         [V07    ] (  0,  0   )  struct (16) zero-ref    single-def <System.Span`1[int]>
 ;# V08 OutArgs      [V08    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V09 tmp1         [V09    ] (  0,  0   )  struct (32) zero-ref    do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Collections.Generic.ValueListBuilder`1[int]>
 ;  V10 tmp2         [V10,T08] (  1,  1   )   byref  ->  [rbp+0x18]  single-def "field V07._reference (fldOffset=0x0)" P-INDEP
 ;  V11 tmp3         [V11,T09] (  1,  1   )     int  ->  [rbp+0x20]  single-def "field V07._length (fldOffset=0x8)" P-INDEP
 ;* V12 tmp4         [V12    ] (  0,  0   )     ref  ->  zero-ref    "V09.[000..008)"
 ;* V13 tmp5         [V13    ] (  0,  0   )     int  ->  zero-ref    "V09.[008..012)"
 ;* V14 tmp6         [V14    ] (  0,  0   )   byref  ->  zero-ref    single-def "V09.[016..024)"
 ;* V15 tmp7         [V15    ] (  0,  0   )     int  ->  zero-ref    "V09.[024..028)"
 ;  V16 tmp8         [V16,T01] (  5, 10   )   byref  ->  rax         single-def "Spilling address for field-by-field copy"
 ;
 ; Lcl frame size = 0
 
 G_M19169_IG01:
        push     rbp
-       push     r15
-       push     r14
-       push     r13
-       push     r12
-       push     rbx
-       lea      rbp, [rsp+0x28]
-       mov      rbx, rdi
-       mov      r13d, edx
-       mov      r15, rcx
-       mov      r14, r8
-       mov      r12d, r9d
-						;; size=30 bbWeight=1 PerfScore 7.75
+       mov      rbp, rsp
+						;; size=4 bbWeight=1 PerfScore 1.25
 G_M19169_IG02:
-       lea      rdi, bword ptr [rbx+0x28]
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-       mov      dword ptr [rbx+0x70], r13d
-       lea      rdi, bword ptr [rbx+0x30]
-       mov      rsi, r15
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-       xor      edi, edi
-       mov      dword ptr [rbx+0x5C], edi
-       mov      byte  ptr [rbx+0x74], 0
-       lea      rdi, bword ptr [rbx+0x38]
-       mov      rsi, r14
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-       mov      dword ptr [rbx+0x6C], r12d
-       lea      rdi, bword ptr [rbx+0x40]
-       mov      rsi, gword ptr [rbp+0x10]
-       call     CORINFO_HELP_CHECKED_ASSIGN_REF
-       lea      rax, bword ptr [rbx+0x78]
+       mov      gword ptr [rdi+0x28], rsi
+       mov      dword ptr [rdi+0x70], edx
+       mov      gword ptr [rdi+0x30], rcx
+       xor      eax, eax
+       mov      dword ptr [rdi+0x5C], eax
+       mov      byte  ptr [rdi+0x74], 0
+       mov      gword ptr [rdi+0x38], r8
+       mov      dword ptr [rdi+0x6C], r9d
+       mov      rax, gword ptr [rbp+0x10]
+       mov      gword ptr [rdi+0x40], rax
+       lea      rax, bword ptr [rdi+0x78]
        xor      rcx, rcx
        mov      gword ptr [rax], rcx
-						;; size=72 bbWeight=1 PerfScore 13.50
+						;; size=45 bbWeight=1 PerfScore 11.00
 G_M19169_IG03:
        mov      dword ptr [rax+0x08], ecx
-       mov      r15, bword ptr [rbp+0x18]
-       mov      bword ptr [rax+0x10], r15
-       mov      r15d, dword ptr [rbp+0x20]
-       mov      dword ptr [rax+0x18], r15d
-						;; size=19 bbWeight=1 PerfScore 5.00
+       mov      rcx, bword ptr [rbp+0x18]
+       mov      bword ptr [rax+0x10], rcx
+       mov      ecx, dword ptr [rbp+0x20]
+       mov      dword ptr [rax+0x18], ecx
+       xor      rax, rax
+       mov      gword ptr [rdi], rax
+						;; size=22 bbWeight=1 PerfScore 6.25
 G_M19169_IG04:
-       mov      gword ptr [rbx], rcx
-						;; size=3 bbWeight=1 PerfScore 1.00
+       mov      gword ptr [rdi+0x08], rax
+						;; size=4 bbWeight=1 PerfScore 1.00
 G_M19169_IG05:
-       mov      gword ptr [rbx+0x08], rcx
+       mov      gword ptr [rdi+0x10], rax
 						;; size=4 bbWeight=1 PerfScore 1.00
 G_M19169_IG06:
-       mov      gword ptr [rbx+0x10], rcx
+       mov      gword ptr [rdi+0x18], rax
 						;; size=4 bbWeight=1 PerfScore 1.00
 G_M19169_IG07:
-       mov      gword ptr [rbx+0x18], rcx
+       mov      gword ptr [rdi+0x20], rax
 						;; size=4 bbWeight=1 PerfScore 1.00
 G_M19169_IG08:
-       mov      gword ptr [rbx+0x20], rcx
-						;; size=4 bbWeight=1 PerfScore 1.00
+       mov      dword ptr [rdi+0x58], eax
+						;; size=3 bbWeight=1 PerfScore 1.00
 G_M19169_IG09:
-       mov      dword ptr [rbx+0x58], ecx
+       mov      dword ptr [rdi+0x60], eax
 						;; size=3 bbWeight=1 PerfScore 1.00
 G_M19169_IG10:
-       mov      dword ptr [rbx+0x60], ecx
+       mov      dword ptr [rdi+0x64], eax
 						;; size=3 bbWeight=1 PerfScore 1.00
 G_M19169_IG11:
-       mov      dword ptr [rbx+0x64], ecx
+       mov      dword ptr [rdi+0x68], eax
 						;; size=3 bbWeight=1 PerfScore 1.00
 G_M19169_IG12:
-       mov      dword ptr [rbx+0x68], ecx
-						;; size=3 bbWeight=1 PerfScore 1.00
-G_M19169_IG13:
-       mov      gword ptr [rbx+0x48], rcx
+       mov      gword ptr [rdi+0x48], rax
 						;; size=4 bbWeight=1 PerfScore 1.00
-G_M19169_IG14:
-       mov      gword ptr [rbx+0x50], rcx
-       mov      byte  ptr [rbx+0x75], 0
+G_M19169_IG13:
+       mov      gword ptr [rdi+0x50], rax
+       mov      byte  ptr [rdi+0x75], 0
 						;; size=8 bbWeight=1 PerfScore 2.00
-G_M19169_IG15:
-       pop      rbx
-       pop      r12
-       pop      r13
-       pop      r14
-       pop      r15
+G_M19169_IG14:
        pop      rbp
        ret      
-						;; size=11 bbWeight=1 PerfScore 4.00
+						;; size=2 bbWeight=1 PerfScore 1.50
 
-; Total bytes of code 175, prolog size 15, PerfScore 42.25, instruction count 55, allocated bytes for code 175 (MethodHash=855eb51e) for method System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this (FullOpts)
+; Total bytes of code 113, prolog size 4, PerfScore 31.00, instruction count 35, allocated bytes for code 113 (MethodHash=855eb51e) for method System.Text.RegularExpressions.RegexParser:.ctor(System.String,int,System.Globalization.CultureInfo,System.Collections.Hashtable,int,System.Collections.Hashtable,System.Span`1[int]):this (FullOpts)

Larger list of diffs: https://gist.github.com/MihuBot/d10028a60fc96725a3a87d05492fd727

[MihuBot]

@EgorBo