[JitDiff X64] [hez2010] JIT: Initial devirtualization and inlining for GVM

[MihuBot]

Job completed in 16 minutes 52 seconds (remote runner delay: 1 minute 32 seconds).
dotnet/runtime#112353

Diffs

Diffs

Found 104 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 43694896
Total bytes of diff: 43682151
Total bytes of delta: -12745 (-0.03 % of base)
Total relative delta: -2.43
    diff is an improvement.
    relative diff is an improvement.


Total byte diff includes -9880 bytes from reconciling methods
	Base had   37 unique methods,     9880 unique bytes
	Diff had    0 unique methods,        0 unique bytes

Top file regressions (bytes):
         250 : System.Net.NameResolution.dasm (0.54 % of base)
         140 : System.ComponentModel.Composition.dasm (0.03 % of base)

Top file improvements (bytes):
       -3523 : System.Linq.dasm (-0.28 % of base)
       -1813 : System.Collections.Immutable.dasm (-0.10 % of base)
       -1482 : System.Composition.TypedParts.dasm (-3.14 % of base)
       -1223 : System.Collections.dasm (-0.29 % of base)
        -938 : System.Threading.Tasks.Dataflow.dasm (-0.08 % of base)
        -842 : Microsoft.CSharp.dasm (-0.25 % of base)
        -830 : System.Linq.Expressions.dasm (-0.09 % of base)
        -470 : System.Net.Requests.dasm (-0.32 % of base)
        -414 : Microsoft.Extensions.Http.dasm (-0.60 % of base)
        -369 : System.IO.Packaging.dasm (-0.34 % of base)
        -259 : System.Net.Http.dasm (-0.03 % of base)
        -254 : System.ComponentModel.Annotations.dasm (-0.49 % of base)
        -226 : System.Text.Json.dasm (-0.02 % of base)
        -188 : System.Private.DataContractSerialization.dasm (-0.02 % of base)
        -178 : System.Composition.Convention.dasm (-0.14 % of base)
         -75 : Microsoft.Extensions.DependencyModel.dasm (-0.10 % of base)
         -51 : System.Linq.Queryable.dasm (-0.01 % of base)

19 total files with Code Size differences (17 improved, 2 regressed), 244 unchanged.

Top method regressions (bytes):
         110 (47.62 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception) (FullOpts)
          73 (29.08 % of base) : System.ComponentModel.Composition.dasm - System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):this (FullOpts)
          67 (15.09 % of base) : System.ComponentModel.Composition.dasm - System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException (FullOpts)
          64 (6.43 % of base) : System.Net.Http.dasm - System.Net.Http.Metrics.SocketsHttpHandlerMetrics:.ctor(System.Diagnostics.Metrics.Meter):this (FullOpts)
          49 (6.81 % of base) : System.Net.Http.dasm - System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):this (FullOpts)
          46 (12.07 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:GetBoxedInt32(int):System.Object (FullOpts)
          46 (12.40 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:GetErrorStatusCodeString(int):System.String (FullOpts)
          46 (5.01 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:BeforeResolution(System.Object,long):System.Net.NameResolutionActivity:this (FullOpts)
          44 (314.29 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double] (FullOpts)
          44 (151.72 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionMetrics:IsEnabled():ubyte (FullOpts)
          39 (10.86 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:AfterResolution(System.Object,byref,System.Object,System.Exception):this (FullOpts)
          39 (28.26 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:AnyDiagnosticsEnabled():ubyte (FullOpts)
          28 (16.28 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.CompilationOptions:.cctor() (FullOpts)

Top method improvements (bytes):
       -1482 (-100.00 % of base) : System.Composition.TypedParts.dasm - System.Composition.CompositionContextExtensions:SatisfyImportsInternal(System.Composition.CompositionContext,System.Object,System.Composition.Convention.AttributedModelProvider) (FullOpts) (1 base, 0 diff methods)
        -457 (-100.00 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.Semantics.TypeManager:InternalsVisibleTo(System.Reflection.Assembly,System.Reflection.Assembly):ubyte (FullOpts) (1 base, 0 diff methods)
        -436 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[System.Numerics.Vector`1[float]]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -424 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[double]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -422 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[short]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -422 (-39.59 % of base) : System.Net.Requests.dasm - System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection:this (FullOpts)
        -421 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[long]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -421 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[System.Nullable`1[int]]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -420 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[ubyte]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -419 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[int]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -414 (-40.00 % of base) : Microsoft.Extensions.Http.dasm - Microsoft.Extensions.Http.Logging.HttpHeadersLogValue:get_Values():System.Collections.Generic.List`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]:this (FullOpts)
        -348 (-100.00 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.Semantics.MemberLookup:IsDynamicMember(Microsoft.CSharp.RuntimeBinder.Semantics.Symbol):ubyte (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[double,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[double,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[int,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[int,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[long,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[long,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[short,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[short,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.Nullable`1[int],System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[ubyte,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[ubyte,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -253 (-100.00 % of base) : System.Net.Http.dasm - System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this (FullOpts) (1 base, 0 diff methods)
        -227 (-94.58 % of base) : System.Net.Http.dasm - System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this (FullOpts)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[double]():System.Collections.Generic.IEnumerator`1[double] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[long]():System.Collections.Generic.IEnumerator`1[long] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[short]():System.Collections.Generic.IEnumerator`1[short] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.Nullable`1[int]]():System.Collections.Generic.IEnumerator`1[System.Nullable`1[int]] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.Numerics.Vector`1[float]]():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[ubyte]():System.Collections.Generic.IEnumerator`1[ubyte] (FullOpts) (1 base, 0 diff methods)
        -178 (-100.00 % of base) : System.Composition.Convention.dasm - System.Composition.Convention.PartConventionBuilder:MemberHasExportMetadata(System.Reflection.MemberInfo):ubyte (FullOpts) (1 base, 0 diff methods)
        -168 (-21.03 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.Package:DoOperationOnEachPart(System.IO.Packaging.Package+PartOperation):this (FullOpts)
        -151 (-50.33 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this (FullOpts)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[double]:GetEnumerator():System.Collections.Generic.IEnumerator`1[double]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[int]:GetEnumerator():System.Collections.Generic.IEnumerator`1[int]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[long]:GetEnumerator():System.Collections.Generic.IEnumerator`1[long]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[short]:GetEnumerator():System.Collections.Generic.IEnumerator`1[short]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[System.Nullable`1[int]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Nullable`1[int]]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[System.Numerics.Vector`1[float]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[ubyte]:GetEnumerator():System.Collections.Generic.IEnumerator`1[ubyte]:this (FullOpts) (1 base, 0 diff methods)
        -116 (-100.00 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.CompareAttribute:GetDisplayNameForProperty(System.Reflection.PropertyInfo):System.String:this (FullOpts) (1 base, 0 diff methods)
        -105 (-11.18 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteMethodCallExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
        -102 (-100.00 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.DataContracts.CollectionDataContract:IsCollectionInterface(System.Type):ubyte (FullOpts) (1 base, 0 diff methods)
         -97 (-8.55 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteInvocationExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -97 (-33.92 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]:this (FullOpts)
         -96 (-9.10 % of base) : System.Linq.dasm - System.Linq.Enumerable+IEnumerableSkipTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -86 (-14.19 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.DataContracts.ClassDataContract:IsNonAttributedTypeValidForSerialization(System.Type):ubyte (FullOpts)
         -75 (-2.00 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteListInitExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -65 (-21.38 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.__Canon]():System.__Canon:this (FullOpts)
         -61 (-38.36 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Expression:GetDelegateType(System.Type[]):System.Type (FullOpts)
         -59 (-7.89 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteIndexAssignment(System.Linq.Expressions.BinaryExpression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -58 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[int]():System.Collections.Generic.IEnumerator`1[int] (FullOpts) (1 base, 0 diff methods)
         -55 (-35.95 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.RuntimeAssetGroup:.ctor(System.String,System.String[]):this (FullOpts)
         -55 (-11.07 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteDynamicExpression(System.Linq.Expressions.Expression):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -55 (-8.61 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteIndexExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -55 (-8.76 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteNewArrayExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -53 (-5.24 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[ubyte]:LazyToArray():ubyte[]:this (FullOpts)
         -52 (-10.12 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteNewExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -51 (-13.35 % of base) : System.Linq.Queryable.dasm - System.Linq.EnumerableRewriter:GetPublicType(System.Type):System.Type (FullOpts)
         -50 (-6.59 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.XmlCompatibilityReader:DeclareNamespaceCompatibility(System.String,System.String):this (FullOpts)
         -49 (-7.80 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:ToArray[ubyte](System.Collections.Generic.IEnumerable`1[ubyte],byref):ubyte[] (FullOpts)
         -49 (-7.24 % of base) : System.Linq.dasm - System.Linq.Enumerable+ArrayWhereIterator`1[ubyte]:ToArray(System.ReadOnlySpan`1[ubyte],System.Func`2[ubyte,ubyte]):ubyte[] (FullOpts)
         -49 (-4.11 % of base) : System.Linq.dasm - System.Linq.Enumerable+Concat2Iterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -49 (-7.78 % of base) : System.Linq.dasm - System.Linq.Enumerable+ConcatNIterator`1[ubyte]:LazyToArray():ubyte[]:this (FullOpts)
         -49 (-5.86 % of base) : System.Linq.dasm - System.Linq.Enumerable+IEnumerableWhereIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -49 (-5.51 % of base) : System.Linq.dasm - System.Linq.Enumerable+OfTypeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -49 (-4.07 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ListBindingRewriter:AsExpression(System.Linq.Expressions.Expression):System.Linq.Expressions.Expression:this (FullOpts)
         -48 (-7.32 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.DependencyContextJsonReader:ReadRuntimes(byref):System.Collections.Generic.List`1[Microsoft.Extensions.DependencyModel.RuntimeFallbacks] (FullOpts)
         -48 (-78.69 % of base) : System.Net.Requests.dasm - System.Net.ProtocolViolationException:.ctor():this (FullOpts)
         -47 (-22.38 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.FileExtensionsAttribute:ValidateExtension(System.String):ubyte:this (FullOpts)
         -44 (-22.56 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.FileExtensionsAttribute:get_ExtensionsNormalized():System.String:this (FullOpts)
         -42 (-9.07 % of base) : System.Linq.dasm - System.Linq.Enumerable+ConcatNIterator`1[ubyte]:PreallocatingToArray():ubyte[]:this (FullOpts)
         -42 (-19.81 % of base) : System.Linq.dasm - System.Linq.Enumerable+IListSkipTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -42 (-8.59 % of base) : System.Linq.dasm - System.Linq.Enumerable+OrderedIterator`1[ubyte]:ToArray(int,int):ubyte[]:this (FullOpts)
         -40 (-32.52 % of base) : System.Linq.dasm - System.Linq.Enumerable+ShuffleTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -40 (-50.63 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Error:NotSupported():System.NotSupportedException (FullOpts)
         -37 (-3.18 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.RuntimeBinder:DeferBinding(Microsoft.CSharp.RuntimeBinder.ICSharpBinder,Microsoft.CSharp.RuntimeBinder.ArgumentObject[],System.Dynamic.DynamicMetaObject[],Microsoft.CSharp.RuntimeBinder.Semantics.LocalVariableSymbol[],byref):ubyte:this (FullOpts)
         -30 (-21.90 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.CustomValidationAttribute:FormatErrorMessage(System.String):System.String:this (FullOpts)
         -30 (-2.59 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ListBindingRewriter:AsBinding():System.Linq.Expressions.MemberBinding:this (FullOpts)
         -28 (-100.00 % of base) : System.Net.Http.dasm - <>z__ReadOnlyArray`1[double]:System.Collections.Generic.ICollection<T>.CopyTo(double[],int):this (FullOpts) (1 base, 0 diff methods)
         -28 (-100.00 % of base) : System.Net.NameResolution.dasm - <>z__ReadOnlyArray`1[double]:System.Collections.Generic.ICollection<T>.CopyTo(double[],int):this (FullOpts) (1 base, 0 diff methods)
         -23 (-10.04 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[double]():double:this (FullOpts)
         -23 (-10.13 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[int]():int:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[long]():long:this (FullOpts)
         -23 (-10.04 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[short]():short:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.Nullable`1[int]]():System.Nullable`1[int]:this (FullOpts)
         -23 (-9.20 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.Numerics.Vector`1[float]]():System.Numerics.Vector`1[float]:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[ubyte]():ubyte:this (FullOpts)
         -17 (-15.74 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.ValidationAttribute:FormatErrorMessage(System.String):System.String:this (FullOpts)

Top method regressions (percentages):
          44 (314.29 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double] (FullOpts)
          44 (151.72 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionMetrics:IsEnabled():ubyte (FullOpts)
         110 (47.62 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception) (FullOpts)
          73 (29.08 % of base) : System.ComponentModel.Composition.dasm - System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):this (FullOpts)
          39 (28.26 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:AnyDiagnosticsEnabled():ubyte (FullOpts)
          28 (16.28 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.CompilationOptions:.cctor() (FullOpts)
          67 (15.09 % of base) : System.ComponentModel.Composition.dasm - System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException (FullOpts)
          46 (12.40 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:GetErrorStatusCodeString(int):System.String (FullOpts)
          46 (12.07 % of base) : System.Net.Http.dasm - System.Net.Http.DiagnosticsHelper:GetBoxedInt32(int):System.Object (FullOpts)
          39 (10.86 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:AfterResolution(System.Object,byref,System.Object,System.Exception):this (FullOpts)
          49 (6.81 % of base) : System.Net.Http.dasm - System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):this (FullOpts)
          64 (6.43 % of base) : System.Net.Http.dasm - System.Net.Http.Metrics.SocketsHttpHandlerMetrics:.ctor(System.Diagnostics.Metrics.Meter):this (FullOpts)
          46 (5.01 % of base) : System.Net.NameResolution.dasm - System.Net.NameResolutionTelemetry:BeforeResolution(System.Object,long):System.Net.NameResolutionActivity:this (FullOpts)

Top method improvements (percentages):
         -28 (-100.00 % of base) : System.Net.Http.dasm - <>z__ReadOnlyArray`1[double]:System.Collections.Generic.ICollection<T>.CopyTo(double[],int):this (FullOpts) (1 base, 0 diff methods)
         -28 (-100.00 % of base) : System.Net.NameResolution.dasm - <>z__ReadOnlyArray`1[double]:System.Collections.Generic.ICollection<T>.CopyTo(double[],int):this (FullOpts) (1 base, 0 diff methods)
        -348 (-100.00 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.Semantics.MemberLookup:IsDynamicMember(Microsoft.CSharp.RuntimeBinder.Semantics.Symbol):ubyte (FullOpts) (1 base, 0 diff methods)
        -457 (-100.00 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.Semantics.TypeManager:InternalsVisibleTo(System.Reflection.Assembly,System.Reflection.Assembly):ubyte (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[double,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[double,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[int,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[int,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[long,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[long,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[short,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[short,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.Nullable`1[int],System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -259 (-100.00 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[ubyte,System.Nullable`1[int]]:System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>.GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[ubyte,System.Nullable`1[int]]]:this (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[double]():System.Collections.Generic.IEnumerator`1[double] (FullOpts) (1 base, 0 diff methods)
         -58 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[int]():System.Collections.Generic.IEnumerator`1[int] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[long]():System.Collections.Generic.IEnumerator`1[long] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[short]():System.Collections.Generic.IEnumerator`1[short] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.Nullable`1[int]]():System.Collections.Generic.IEnumerator`1[System.Nullable`1[int]] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.Numerics.Vector`1[float]]():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]] (FullOpts) (1 base, 0 diff methods)
        -186 (-100.00 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[ubyte]():System.Collections.Generic.IEnumerator`1[ubyte] (FullOpts) (1 base, 0 diff methods)
        -116 (-100.00 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.CompareAttribute:GetDisplayNameForProperty(System.Reflection.PropertyInfo):System.String:this (FullOpts) (1 base, 0 diff methods)
       -1482 (-100.00 % of base) : System.Composition.TypedParts.dasm - System.Composition.CompositionContextExtensions:SatisfyImportsInternal(System.Composition.CompositionContext,System.Object,System.Composition.Convention.AttributedModelProvider) (FullOpts) (1 base, 0 diff methods)
        -178 (-100.00 % of base) : System.Composition.Convention.dasm - System.Composition.Convention.PartConventionBuilder:MemberHasExportMetadata(System.Reflection.MemberInfo):ubyte (FullOpts) (1 base, 0 diff methods)
        -424 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[double]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -419 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[int]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -421 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[long]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -422 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[short]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -421 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[System.Nullable`1[int]]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -436 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[System.Numerics.Vector`1[float]]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -420 (-100.00 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[ubyte]:MoveNext():ubyte:this (FullOpts) (1 base, 0 diff methods)
        -253 (-100.00 % of base) : System.Net.Http.dasm - System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this (FullOpts) (1 base, 0 diff methods)
        -102 (-100.00 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.DataContracts.CollectionDataContract:IsCollectionInterface(System.Type):ubyte (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[double]:GetEnumerator():System.Collections.Generic.IEnumerator`1[double]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[int]:GetEnumerator():System.Collections.Generic.IEnumerator`1[int]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[long]:GetEnumerator():System.Collections.Generic.IEnumerator`1[long]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[short]:GetEnumerator():System.Collections.Generic.IEnumerator`1[short]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[System.Nullable`1[int]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Nullable`1[int]]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[System.Numerics.Vector`1[float]]:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Numerics.Vector`1[float]]:this (FullOpts) (1 base, 0 diff methods)
        -134 (-100.00 % of base) : System.Threading.Tasks.Dataflow.dasm - System.Threading.Tasks.Dataflow.Internal.ImmutableArray`1[ubyte]:GetEnumerator():System.Collections.Generic.IEnumerator`1[ubyte]:this (FullOpts) (1 base, 0 diff methods)
        -227 (-94.58 % of base) : System.Net.Http.dasm - System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this (FullOpts)
         -48 (-78.69 % of base) : System.Net.Requests.dasm - System.Net.ProtocolViolationException:.ctor():this (FullOpts)
         -40 (-50.63 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Error:NotSupported():System.NotSupportedException (FullOpts)
        -151 (-50.33 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this (FullOpts)
        -414 (-40.00 % of base) : Microsoft.Extensions.Http.dasm - Microsoft.Extensions.Http.Logging.HttpHeadersLogValue:get_Values():System.Collections.Generic.List`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]:this (FullOpts)
        -422 (-39.59 % of base) : System.Net.Requests.dasm - System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection:this (FullOpts)
         -61 (-38.36 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Expression:GetDelegateType(System.Type[]):System.Type (FullOpts)
         -55 (-35.95 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.RuntimeAssetGroup:.ctor(System.String,System.String[]):this (FullOpts)
         -97 (-33.92 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]:this (FullOpts)
         -40 (-32.52 % of base) : System.Linq.dasm - System.Linq.Enumerable+ShuffleTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -44 (-22.56 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.FileExtensionsAttribute:get_ExtensionsNormalized():System.String:this (FullOpts)
         -47 (-22.38 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.FileExtensionsAttribute:ValidateExtension(System.String):ubyte:this (FullOpts)
         -30 (-21.90 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.CustomValidationAttribute:FormatErrorMessage(System.String):System.String:this (FullOpts)
         -65 (-21.38 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.__Canon]():System.__Canon:this (FullOpts)
        -168 (-21.03 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.Package:DoOperationOnEachPart(System.IO.Packaging.Package+PartOperation):this (FullOpts)
         -42 (-19.81 % of base) : System.Linq.dasm - System.Linq.Enumerable+IListSkipTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -17 (-15.74 % of base) : System.ComponentModel.Annotations.dasm - System.ComponentModel.DataAnnotations.ValidationAttribute:FormatErrorMessage(System.String):System.String:this (FullOpts)
         -86 (-14.19 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.DataContracts.ClassDataContract:IsNonAttributedTypeValidForSerialization(System.Type):ubyte (FullOpts)
         -51 (-13.35 % of base) : System.Linq.Queryable.dasm - System.Linq.EnumerableRewriter:GetPublicType(System.Type):System.Type (FullOpts)
        -105 (-11.18 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteMethodCallExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -55 (-11.07 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteDynamicExpression(System.Linq.Expressions.Expression):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -23 (-10.13 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[int]():int:this (FullOpts)
         -52 (-10.12 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteNewExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[long]():long:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.Nullable`1[int]]():System.Nullable`1[int]:this (FullOpts)
         -23 (-10.09 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[ubyte]():ubyte:this (FullOpts)
         -23 (-10.04 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[double]():double:this (FullOpts)
         -23 (-10.04 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[short]():short:this (FullOpts)
         -23 (-9.20 % of base) : System.Text.Json.dasm - System.Text.Json.Nodes.JsonValueOfElement:GetValue[System.Numerics.Vector`1[float]]():System.Numerics.Vector`1[float]:this (FullOpts)
         -96 (-9.10 % of base) : System.Linq.dasm - System.Linq.Enumerable+IEnumerableSkipTakeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -42 (-9.07 % of base) : System.Linq.dasm - System.Linq.Enumerable+ConcatNIterator`1[ubyte]:PreallocatingToArray():ubyte[]:this (FullOpts)
         -55 (-8.76 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteNewArrayExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -55 (-8.61 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteIndexExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -42 (-8.59 % of base) : System.Linq.dasm - System.Linq.Enumerable+OrderedIterator`1[ubyte]:ToArray(int,int):ubyte[]:this (FullOpts)
         -97 (-8.55 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteInvocationExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -59 (-7.89 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteIndexAssignment(System.Linq.Expressions.BinaryExpression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)
         -49 (-7.80 % of base) : System.Collections.dasm - System.Collections.Generic.EnumerableHelpers:ToArray[ubyte](System.Collections.Generic.IEnumerable`1[ubyte],byref):ubyte[] (FullOpts)
         -49 (-7.78 % of base) : System.Linq.dasm - System.Linq.Enumerable+ConcatNIterator`1[ubyte]:LazyToArray():ubyte[]:this (FullOpts)
         -48 (-7.32 % of base) : Microsoft.Extensions.DependencyModel.dasm - Microsoft.Extensions.DependencyModel.DependencyContextJsonReader:ReadRuntimes(byref):System.Collections.Generic.List`1[Microsoft.Extensions.DependencyModel.RuntimeFallbacks] (FullOpts)
         -49 (-7.24 % of base) : System.Linq.dasm - System.Linq.Enumerable+ArrayWhereIterator`1[ubyte]:ToArray(System.ReadOnlySpan`1[ubyte],System.Func`2[ubyte,ubyte]):ubyte[] (FullOpts)
         -50 (-6.59 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.XmlCompatibilityReader:DeclareNamespaceCompatibility(System.String,System.String):this (FullOpts)
         -49 (-5.86 % of base) : System.Linq.dasm - System.Linq.Enumerable+IEnumerableWhereIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -49 (-5.51 % of base) : System.Linq.dasm - System.Linq.Enumerable+OfTypeIterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -53 (-5.24 % of base) : System.Linq.dasm - System.Linq.Enumerable+AppendPrependN`1[ubyte]:LazyToArray():ubyte[]:this (FullOpts)
         -49 (-4.11 % of base) : System.Linq.dasm - System.Linq.Enumerable+Concat2Iterator`1[ubyte]:ToArray():ubyte[]:this (FullOpts)
         -49 (-4.07 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ListBindingRewriter:AsExpression(System.Linq.Expressions.Expression):System.Linq.Expressions.Expression:this (FullOpts)
         -37 (-3.18 % of base) : Microsoft.CSharp.dasm - Microsoft.CSharp.RuntimeBinder.RuntimeBinder:DeferBinding(Microsoft.CSharp.RuntimeBinder.ICSharpBinder,Microsoft.CSharp.RuntimeBinder.ArgumentObject[],System.Dynamic.DynamicMetaObject[],Microsoft.CSharp.RuntimeBinder.Semantics.LocalVariableSymbol[],byref):ubyte:this (FullOpts)
         -30 (-2.59 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller+ListBindingRewriter:AsBinding():System.Linq.Expressions.MemberBinding:this (FullOpts)
         -75 (-2.00 % of base) : System.Linq.Expressions.dasm - System.Linq.Expressions.Compiler.StackSpiller:RewriteListInitExpression(System.Linq.Expressions.Expression,int):System.Linq.Expressions.Compiler.StackSpiller+Result:this (FullOpts)

99 total methods with Code Size differences (86 improved, 13 regressed), 247538 unchanged.

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

Artifacts:

• build-clr-checked-main.zip (87 MB)
• build-artifacts-main.zip (710 MB)
• build-clr-checked-pr.zip (87 MB)
• build-artifacts-pr.zip (711 MB)
• jit-diffs-main.zip (148 MB)
• jit-diffs-pr.zip (148 MB)
• diff-frameworks.txt (43 KB)
• ShortDiffsRegressions.md (59 KB)
• LongDiffsRegressions.md (154 KB)
• ShortDiffsImprovements.md (55 KB)
• LongDiffsImprovements.md (437 KB)

[MihuBot]

Top method regressions

110 (47.62 % of base) - System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception)

 ; Assembly listing for method System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception) (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; 16 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op single-def <System.TimeSpan>
 ;  V01 arg1         [V01,T01] (  3,  3   )     ref  ->  rsi         class-hnd single-def <System.String>
 ;  V02 arg2         [V02,T00] (  4,  3.50)     ref  ->  rdx         class-hnd single-def <System.Exception>
 ;* V03 loc0         [V03    ] (  0,  0   )  struct (16) zero-ref    <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
-;  V04 loc1         [V04,T06] (  2,  1   )     ref  ->  rax         class-hnd exact single-def <System.String>
+;  V04 loc1         [V04,T06] (  2,  1   )     ref  ->  r14         class-hnd exact single-def <System.String>
 ;* V05 loc2         [V05    ] (  0,  0   )  struct (16) zero-ref    <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
 ;# V06 OutArgs      [V06    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V07 tmp1         [V07    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
-;  V08 tmp2         [V08,T04] (  2,  2   )     ref  ->  rdi         class-hnd exact single-def "Inlining Arg" <System.Diagnostics.Metrics.Histogram`1[double]>
-;  V09 tmp3         [V09,T14] (  2,  2   )  double  ->  mm0         "Inlining Arg"
-;  V10 tmp4         [V10    ] (  3,  1.50)  struct (16) [rbp-0x20]  do-not-enreg[XS] must-init addr-exposed ld-addr-op "Inline stloc first use temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
-;* V11 tmp5         [V11    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
-;* V12 tmp6         [V12    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
-;  V13 tmp7         [V13,T05] (  2,  2   )     ref  ->  rdi         class-hnd exact single-def "Inlining Arg" <System.Diagnostics.Metrics.Histogram`1[double]>
+;  V07 tmp1         [V07,T03] (  3,  3   )     ref  ->  rdi         class-hnd exact single-def "impAppendStmt" <System.Diagnostics.Metrics.Histogram`1[double]>
+;  V08 tmp2         [V08,T04] (  3,  3   )     ref  ->  rdi         class-hnd exact single-def "impAppendStmt" <System.Diagnostics.Metrics.Histogram`1[double]>
+;* V09 tmp3         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
+;  V10 tmp4         [V10,T14] (  2,  2   )  double  ->  mm0         "Inlining Arg"
+;  V11 tmp5         [V11    ] (  3,  1.50)  struct (16) [rbp-0x28]  do-not-enreg[XS] must-init addr-exposed ld-addr-op "Inline stloc first use temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
+;* V12 tmp6         [V12    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
+;* V13 tmp7         [V13    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Object]>
 ;  V14 tmp8         [V14,T15] (  2,  2   )  double  ->  mm0         "Inlining Arg"
-;  V15 tmp9         [V15    ] (  6,  3   )  struct (32) [rbp-0x40]  do-not-enreg[XS] must-init addr-exposed ld-addr-op "Inline ldloca(s) first use temp" <<>y__InlineArray2`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
+;  V15 tmp9         [V15    ] (  6,  3   )  struct (32) [rbp-0x48]  do-not-enreg[XS] must-init addr-exposed ld-addr-op "Inline ldloca(s) first use temp" <<>y__InlineArray2`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
 ;* V16 tmp10        [V16    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]]>
 ;* V17 tmp11        [V17    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
 ;  V18 tmp12        [V18,T02] (  3,  2   )    long  ->  rbx         single-def "field V00._ticks (fldOffset=0x0)" P-INDEP
 ;* V19 tmp13        [V19    ] (  0,  0   )     ref  ->  zero-ref    single-def "field V03.key (fldOffset=0x0)" P-INDEP
 ;* V20 tmp14        [V20    ] (  0,  0   )     ref  ->  zero-ref    single-def "field V03.value (fldOffset=0x8)" P-INDEP
 ;* V21 tmp15        [V21    ] (  0,  0   )     ref  ->  zero-ref    single-def "field V05.key (fldOffset=0x0)" P-INDEP
 ;* V22 tmp16        [V22    ] (  0,  0   )     ref  ->  zero-ref    single-def "field V05.value (fldOffset=0x8)" P-INDEP
-;* V23 tmp17        [V23,T08] (  0,  0   )     ref  ->  zero-ref    single-def "field V07.key (fldOffset=0x0)" P-INDEP
-;  V24 tmp18        [V24,T03] (  3,  2   )     ref  ->  r15         single-def "field V07.value (fldOffset=0x8)" P-INDEP
-;  V25 tmp19        [V25    ] (  2,  1   )     ref  ->  [rbp-0x20]  do-not-enreg[X] addr-exposed "field V10.key (fldOffset=0x0)" P-DEP
-;  V26 tmp20        [V26    ] (  2,  1   )     ref  ->  [rbp-0x18]  do-not-enreg[X] addr-exposed "field V10.value (fldOffset=0x8)" P-DEP
-;* V27 tmp21        [V27,T09] (  0,  0   )   byref  ->  zero-ref    single-def "field V11._reference (fldOffset=0x0)" P-INDEP
-;* V28 tmp22        [V28,T12] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
-;* V29 tmp23        [V29,T10] (  0,  0   )     ref  ->  zero-ref    single-def "field V12.key (fldOffset=0x0)" P-INDEP
-;  V30 tmp24        [V30,T07] (  2,  1   )     ref  ->  rax         single-def "field V12.value (fldOffset=0x8)" P-INDEP
+;* V23 tmp17        [V23,T08] (  0,  0   )     ref  ->  zero-ref    single-def "field V09.key (fldOffset=0x0)" P-INDEP
+;  V24 tmp18        [V24,T05] (  3,  2   )     ref  ->  r15         single-def "field V09.value (fldOffset=0x8)" P-INDEP
+;  V25 tmp19        [V25    ] (  2,  1   )     ref  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed "field V11.key (fldOffset=0x0)" P-DEP
+;  V26 tmp20        [V26    ] (  2,  1   )     ref  ->  [rbp-0x20]  do-not-enreg[X] addr-exposed "field V11.value (fldOffset=0x8)" P-DEP
+;* V27 tmp21        [V27,T09] (  0,  0   )   byref  ->  zero-ref    single-def "field V12._reference (fldOffset=0x0)" P-INDEP
+;* V28 tmp22        [V28,T12] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;* V29 tmp23        [V29,T10] (  0,  0   )     ref  ->  zero-ref    single-def "field V13.key (fldOffset=0x0)" P-INDEP
+;  V30 tmp24        [V30,T07] (  2,  1   )     ref  ->  r14         single-def "field V13.value (fldOffset=0x8)" P-INDEP
 ;* V31 tmp25        [V31    ] (  0,  0   )   byref  ->  zero-ref    "field V16._reference (fldOffset=0x0)" P-INDEP
 ;* V32 tmp26        [V32    ] (  0,  0   )     int  ->  zero-ref    "field V16._length (fldOffset=0x8)" P-INDEP
 ;* V33 tmp27        [V33,T11] (  0,  0   )   byref  ->  zero-ref    single-def "field V17._reference (fldOffset=0x0)" P-INDEP
 ;* V34 tmp28        [V34,T13] (  0,  0   )     int  ->  zero-ref    "field V17._length (fldOffset=0x8)" P-INDEP
 ;
-; Lcl frame size = 48
+; Lcl frame size = 56
 
 G_M12031_IG01:
        push     rbp
        push     r15
+       push     r14
        push     rbx
-       sub      rsp, 48
-       lea      rbp, [rsp+0x40]
+       sub      rsp, 56
+       lea      rbp, [rsp+0x50]
+       xor      eax, eax
+       mov      qword ptr [rbp-0x48], rax
        vxorps   xmm8, xmm8, xmm8
        vmovdqu  ymmword ptr [rbp-0x40], ymm8
-       vmovdqa  xmmword ptr [rbp-0x20], xmm8
+       mov      qword ptr [rbp-0x20], rax
        mov      rbx, rdi
-						;; size=31 bbWeight=1 PerfScore 8.33
+						;; size=38 bbWeight=1 PerfScore 9.58
 G_M12031_IG02:
        mov      r15, rsi
        test     rdx, rdx
-       je       SHORT G_M12031_IG04
-						;; size=8 bbWeight=1 PerfScore 1.50
+       je       G_M12031_IG05
+						;; size=12 bbWeight=1 PerfScore 1.50
 G_M12031_IG03:
        mov      rdi, rdx
        mov      rax, 0xD1FFAB1E      ; code for System.Net.NameResolutionTelemetry:GetErrorType(System.Exception):System.String
        call     [rax]System.Net.NameResolutionTelemetry:GetErrorType(System.Exception):System.String
-       mov      rsi, 0xD1FFAB1E      ; const ptr
+       mov      r14, rax
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       G_M12031_IG09
+						;; size=37 bbWeight=0.50 PerfScore 4.00
+G_M12031_IG04:
+       mov      rsi, 0xD1FFAB1E      ; data for System.Net.NameResolutionMetrics:s_lookupDuration
        mov      rdi, gword ptr [rsi]
        vxorps   xmm0, xmm0, xmm0
        vcvtsi2sd xmm0, xmm0, rbx
        vdivsd   xmm0, xmm0, qword ptr [reloc @RWD00]
+       cmp      byte  ptr [rdi], dil
        vxorps   ymm1, ymm1, ymm1
-       vmovdqu  ymmword ptr [rbp-0x40], ymm1
+       vmovdqu  ymmword ptr [rbp-0x48], ymm1
        mov      rsi, 0xD1FFAB1E      ; 'dns.question.name'
-       mov      gword ptr [rbp-0x40], rsi
-       mov      gword ptr [rbp-0x38], r15
+       mov      gword ptr [rbp-0x48], rsi
+       mov      gword ptr [rbp-0x40], r15
        mov      rsi, 0xD1FFAB1E      ; 'error.type'
-       mov      gword ptr [rbp-0x30], rsi
-       mov      gword ptr [rbp-0x28], rax
-       lea      rsi, bword ptr [rbp-0x40]
+       mov      gword ptr [rbp-0x38], rsi
+       mov      gword ptr [rbp-0x30], r14
+       lea      rsi, bword ptr [rbp-0x48]
        mov      edx, 2
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Instrument`1[double]:RecordMeasurement(double,System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):this
        call     [rax]System.Diagnostics.Metrics.Instrument`1[double]:RecordMeasurement(double,System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):this
-       jmp      SHORT G_M12031_IG05
-						;; size=113 bbWeight=0.50 PerfScore 18.96
-G_M12031_IG04:
-       mov      rsi, 0xD1FFAB1E      ; const ptr
+       jmp      SHORT G_M12031_IG07
+						;; size=101 bbWeight=0.50 PerfScore 18.71
+G_M12031_IG05:
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       SHORT G_M12031_IG10
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M12031_IG06:
+       mov      rsi, 0xD1FFAB1E      ; data for System.Net.NameResolutionMetrics:s_lookupDuration
        mov      rdi, gword ptr [rsi]
        vxorps   xmm0, xmm0, xmm0
        vcvtsi2sd xmm0, xmm0, rbx
        vdivsd   xmm0, xmm0, qword ptr [reloc @RWD00]
+       cmp      byte  ptr [rdi], dil
        mov      rsi, 0xD1FFAB1E      ; 'dns.question.name'
-       mov      gword ptr [rbp-0x20], rsi
-       mov      gword ptr [rbp-0x18], r15
-       lea      rsi, bword ptr [rbp-0x20]
+       mov      gword ptr [rbp-0x28], rsi
+       mov      gword ptr [rbp-0x20], r15
+       lea      rsi, bword ptr [rbp-0x28]
        mov      edx, 1
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Instrument`1[double]:RecordMeasurement(double,System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):this
        call     [rax]System.Diagnostics.Metrics.Instrument`1[double]:RecordMeasurement(double,System.ReadOnlySpan`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):this
-						;; size=69 bbWeight=0.50 PerfScore 14.42
-G_M12031_IG05:
+						;; size=72 bbWeight=0.50 PerfScore 15.92
+G_M12031_IG07:
        nop      
 						;; size=1 bbWeight=1 PerfScore 0.25
-G_M12031_IG06:
-       add      rsp, 48
+G_M12031_IG08:
+       add      rsp, 56
        pop      rbx
+       pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=9 bbWeight=1 PerfScore 2.75
+						;; size=11 bbWeight=1 PerfScore 3.25
+G_M12031_IG09:
+       mov      rdi, 0xD1FFAB1E      ; System.Net.NameResolutionMetrics
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      G_M12031_IG04
+						;; size=27 bbWeight=0 PerfScore 0.00
+G_M12031_IG10:
+       mov      rdi, 0xD1FFAB1E      ; System.Net.NameResolutionMetrics
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      G_M12031_IG06
+						;; size=27 bbWeight=0 PerfScore 0.00
 RWD00  	dq	416312D000000000h	;     10000000
 
 
-; Total bytes of code 231, prolog size 28, PerfScore 46.21, instruction count 51, allocated bytes for code 231 (MethodHash=abf3d100) for method System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception) (FullOpts)
+; Total bytes of code 341, prolog size 35, PerfScore 55.33, instruction count 72, allocated bytes for code 341 (MethodHash=abf3d100) for method System.Net.NameResolutionMetrics:AfterResolution(System.TimeSpan,System.String,System.Exception) (FullOpts)
 ; ============================================================

73 (29.08 % of base) - System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):this

 ; Assembly listing for method System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):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; 12 single block inlinees; 5 inlinees without PGO data
+; 0 inlinees with PGO data; 9 single block inlinees; 4 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T00] (  6,  6   )     ref  ->  rbx         this class-hnd single-def <System.ComponentModel.Composition.CompositionException>
-;  V01 arg1         [V01,T03] (  3,  3   )     ref  ->  r15         class-hnd single-def <System.ComponentModel.Composition.CompositionError>
+;  V01 arg1         [V01,T02] (  3,  3   )     ref  ->  r15         class-hnd single-def <System.ComponentModel.Composition.CompositionError>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V03 tmp1         [V03,T01] (  4,  8   )     ref  ->  r13         class-hnd exact single-def "NewArr temp" <System.ComponentModel.Composition.CompositionError[]>
+;  V03 tmp1         [V03,T01] (  4,  8   )     ref  ->  r14         class-hnd exact single-def "NewArr temp" <System.ComponentModel.Composition.CompositionError[]>
 ;* V04 tmp2         [V04    ] (  0,  0   )     ref  ->  zero-ref    single-def
 ;* V05 tmp3         [V05    ] (  0,  0   )     ref  ->  zero-ref    single-def
 ;* V06 tmp4         [V06    ] (  0,  0   )     ref  ->  zero-ref    single-def
-;  V07 tmp5         [V07,T06] (  2,  2   )     ref  ->  r15         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
+;  V07 tmp5         [V07,T03] (  4,  3.50)     ref  ->  r15         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
 ;* V08 tmp6         [V08    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
 ;* V09 tmp7         [V09    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline stloc first use temp" <System.Linq.Enumerable+Iterator`1[System.ComponentModel.Composition.CompositionError]>
-;  V10 tmp8         [V10,T07] (  2,  2   )     ref  ->  r15         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
-;* V11 tmp9         [V11,T10] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
-;* V12 tmp10        [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewArr temp" <System.ComponentModel.Composition.CompositionError[]>
-;  V13 tmp11        [V13,T04] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
-;* V14 tmp12        [V14    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
-;  V15 tmp13        [V15,T08] (  2,  2   )     ref  ->  rsi         class-hnd "Inline return value spill temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
-;  V16 tmp14        [V16,T02] (  3,  6   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
-;  V17 cse0         [V17,T09] (  2,  2   )    long  ->  rdi         "CSE #02: moderate"
-;  V18 cse1         [V18,T05] (  3,  3   )    long  ->  r14         "CSE #01: aggressive"
+;  V10 tmp8         [V10,T05] (  3,  2   )     ref  ->  rsi         class-hnd "Inline return value spill temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
+;  V11 tmp9         [V11,T04] (  3,  3   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
 ;
-; Lcl frame size = 0
+; Lcl frame size = 8
 
 G_M19286_IG01:
        push     rbp
        push     r15
        push     r14
-       push     r13
        push     rbx
+       push     rax
        lea      rbp, [rsp+0x20]
        mov      rbx, rdi
        mov      r15, rsi
-						;; size=19 bbWeight=1 PerfScore 6.00
+						;; size=18 bbWeight=1 PerfScore 6.00
 G_M19286_IG02:
-       mov      r14, 0xD1FFAB1E      ; System.ComponentModel.Composition.CompositionError[]
-       mov      rdi, r14
+       mov      rdi, 0xD1FFAB1E      ; System.ComponentModel.Composition.CompositionError[]
        mov      esi, 1
        call     CORINFO_HELP_NEWARR_1_OBJ
-       mov      r13, rax
-       lea      rdi, bword ptr [r13+0x10]
+       mov      r14, rax
+       lea      rdi, bword ptr [r14+0x10]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        mov      rsi, 0xD1FFAB1E
        mov      qword ptr [rbx+0x68], rsi
        xor      rsi, rsi
        mov      gword ptr [rbx+0x10], rsi
-						;; size=58 bbWeight=1 PerfScore 6.25
+						;; size=55 bbWeight=1 PerfScore 6.00
 G_M19286_IG03:
        mov      gword ptr [rbx+0x20], rsi
-       mov      rsi, r13
+       mov      rsi, r14
        mov      rdi, 0xD1FFAB1E      ; Microsoft.Internal.Requires:NotNullElements[System.ComponentModel.Composition.CompositionError](System.Collections.Generic.IEnumerable`1[System.ComponentModel.Composition.CompositionError],System.String)
        mov      rdx, 0xD1FFAB1E      ; 'errors'
        mov      rax, 0xD1FFAB1E      ; code for Microsoft.Internal.Requires:NotNullElements[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.String)
        call     [rax]Microsoft.Internal.Requires:NotNullElements[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.String)
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
-       je       SHORT G_M19286_IG06
-						;; size=54 bbWeight=1 PerfScore 9.25
+       je       G_M19286_IG12
+						;; size=58 bbWeight=1 PerfScore 9.25
 G_M19286_IG04:
-       mov      esi, 1
-       mov      rdi, r14
-       call     CORINFO_HELP_NEWARR_1_OBJ
+       mov      rsi, r14
+       mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable:ICollectionToArray[System.ComponentModel.Composition.CompositionError](System.Collections.Generic.ICollection`1[System.ComponentModel.Composition.CompositionError]):System.ComponentModel.Composition.CompositionError[]
+       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:ICollectionToArray[System.__Canon](System.Collections.Generic.ICollection`1[System.__Canon]):System.__Canon[]
+       call     [rax]System.Linq.Enumerable:ICollectionToArray[System.__Canon](System.Collections.Generic.ICollection`1[System.__Canon]):System.__Canon[]
        mov      r15, rax
-       mov      r8d, 1
-       mov      rdi, r13
-       mov      rdx, r15
-       xor      esi, esi
-       xor      ecx, ecx
-       mov      rax, 0xD1FFAB1E      ; code for System.Array:Copy(System.Array,int,System.Array,int,int)
-       call     [rax]System.Array:Copy(System.Array,int,System.Array,int,int)
+       test     r15, r15
+       jne      SHORT G_M19286_IG06
+						;; size=33 bbWeight=1 PerfScore 5.25
+G_M19286_IG05:
+       mov      edi, 2
+       mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowArgumentNullException(int)
+       call     [rax]System.ThrowHelper:ThrowArgumentNullException(int)
+       int3     
+						;; size=18 bbWeight=0.50 PerfScore 1.88
+G_M19286_IG06:
+       cmp      dword ptr [r15+0x08], 0
+       jne      SHORT G_M19286_IG09
+						;; size=7 bbWeight=1 PerfScore 4.00
+G_M19286_IG07:
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       SHORT G_M19286_IG13
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M19286_IG08:
+       mov      rdi, 0xD1FFAB1E      ; data for System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]:<Empty>k__BackingField
+       mov      rsi, gword ptr [rdi]
+       jmp      SHORT G_M19286_IG10
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M19286_IG09:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]
        call     CORINFO_HELP_NEWSFAST
        mov      r14, rax
        lea      rdi, bword ptr [r14+0x08]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        mov      rsi, r14
+						;; size=33 bbWeight=0.50 PerfScore 1.75
+G_M19286_IG10:
        lea      rdi, bword ptr [rbx+0x70]
        call     CORINFO_HELP_ASSIGN_REF
        nop      
-						;; size=87 bbWeight=1 PerfScore 11.50
-G_M19286_IG05:
+						;; size=10 bbWeight=1 PerfScore 1.75
+G_M19286_IG11:
+       add      rsp, 8
        pop      rbx
-       pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=9 bbWeight=1 PerfScore 3.50
-G_M19286_IG06:
+						;; size=11 bbWeight=1 PerfScore 3.25
+G_M19286_IG12:
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_NONGCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_NONGCSTATIC_BASE
-       jmp      SHORT G_M19286_IG04
+       jmp      G_M19286_IG04
+						;; size=27 bbWeight=0 PerfScore 0.00
+G_M19286_IG13:
+       mov      rdi, 0xD1FFAB1E      ; System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      SHORT G_M19286_IG08
 						;; size=24 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 251, prolog size 13, PerfScore 36.50, instruction count 60, allocated bytes for code 251 (MethodHash=fe8bb4a9) for method System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):this (FullOpts)
+; Total bytes of code 324, prolog size 12, PerfScore 43.38, instruction count 71, allocated bytes for code 324 (MethodHash=fe8bb4a9) for method System.ComponentModel.Composition.CompositionException:.ctor(System.ComponentModel.Composition.CompositionError):this (FullOpts)
 ; ============================================================

67 (15.09 % of base) - System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException

 ; Assembly listing for method System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException (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; 13 single block inlinees; 8 inlinees without PGO data
+; 0 inlinees with PGO data; 10 single block inlinees; 7 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 arg0         [V00,T02] (  4,  4   )     ref  ->  rbx         class-hnd single-def <System.ComponentModel.Composition.Primitives.ComposablePart>
 ;  V01 arg1         [V01,T03] (  4,  4   )     ref  ->  r15         class-hnd single-def <System.ComponentModel.Composition.Primitives.ExportDefinition>
 ;  V02 arg2         [V02,T04] (  4,  4   )     ref  ->  r14         class-hnd single-def <System.Exception>
 ;# V03 OutArgs      [V03    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;  V04 tmp1         [V04,T00] (  6, 12   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.ComponentModel.Composition.CompositionException>
 ;  V05 tmp2         [V05,T01] (  4,  8   )     ref  ->  r15         class-hnd exact single-def "NewArr temp" <System.ComponentModel.Composition.CompositionError[]>
-;  V06 tmp3         [V06,T06] (  2,  4   )     ref  ->  rbx         class-hnd single-def "Inlining Arg" <System.ComponentModel.Composition.CompositionError>
+;  V06 tmp3         [V06,T05] (  2,  4   )     ref  ->  rbx         class-hnd single-def "Inlining Arg" <System.ComponentModel.Composition.CompositionError>
 ;* V07 tmp4         [V07    ] (  0,  0   )     ref  ->  zero-ref    single-def
 ;* V08 tmp5         [V08    ] (  0,  0   )     ref  ->  zero-ref    single-def
 ;* V09 tmp6         [V09    ] (  0,  0   )     ref  ->  zero-ref    single-def
-;  V10 tmp7         [V10,T08] (  2,  2   )     ref  ->  rbx         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
+;  V10 tmp7         [V10,T06] (  4,  3.50)     ref  ->  rbx         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
 ;* V11 tmp8         [V11    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
 ;* V12 tmp9         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline stloc first use temp" <System.Linq.Enumerable+Iterator`1[System.ComponentModel.Composition.CompositionError]>
-;  V13 tmp10        [V13,T09] (  2,  2   )     ref  ->  rbx         class-hnd "Inline return value spill temp" <System.ComponentModel.Composition.CompositionError[]>
-;* V14 tmp11        [V14,T12] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
-;* V15 tmp12        [V15    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewArr temp" <System.ComponentModel.Composition.CompositionError[]>
-;  V16 tmp13        [V16,T07] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
-;* V17 tmp14        [V17    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.ComponentModel.Composition.CompositionError[]>
-;  V18 tmp15        [V18,T10] (  2,  2   )     ref  ->  rsi         class-hnd "Inline return value spill temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
-;  V19 tmp16        [V19,T05] (  3,  6   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
-;  V20 cse0         [V20,T11] (  2,  2   )    long  ->  rdi         "CSE #02: moderate"
+;  V13 tmp10        [V13,T08] (  3,  2   )     ref  ->  rsi         class-hnd "Inline return value spill temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
+;  V14 tmp11        [V14,T07] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]>
 ;
 ; Lcl frame size = 0
 
 G_M65036_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     rbx
        lea      rbp, [rsp+0x20]
        mov      rbx, rdi
        mov      r15, rsi
        mov      r14, rdx
 						;; size=22 bbWeight=1 PerfScore 6.25
 G_M65036_IG02:
        test     rbx, rbx
-       je       G_M65036_IG08
+       je       G_M65036_IG14
        test     r15, r15
-       je       G_M65036_IG07
+       je       G_M65036_IG13
        test     r14, r14
-       je       G_M65036_IG06
+       je       G_M65036_IG12
        mov      rdi, 0xD1FFAB1E      ; System.ComponentModel.Composition.CompositionException
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      rdi, rbx
        mov      rsi, r15
        mov      rdx, r14
        mov      rax, 0xD1FFAB1E      ; code for System.ComponentModel.Composition.ErrorBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionError
        call     [rax]System.ComponentModel.Composition.ErrorBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionError
        mov      rbx, rax
        mov      rdi, 0xD1FFAB1E      ; System.ComponentModel.Composition.CompositionError[]
        mov      esi, 1
        call     CORINFO_HELP_NEWARR_1_OBJ
        mov      r15, rax
        lea      rdi, bword ptr [r15+0x10]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        mov      rsi, 0xD1FFAB1E
        mov      qword ptr [r13+0x68], rsi
        xor      rsi, rsi
        mov      gword ptr [r13+0x10], rsi
 						;; size=124 bbWeight=1 PerfScore 15.50
 G_M65036_IG03:
        mov      gword ptr [r13+0x20], rsi
        mov      rsi, r15
        mov      rdi, 0xD1FFAB1E      ; Microsoft.Internal.Requires:NotNullElements[System.ComponentModel.Composition.CompositionError](System.Collections.Generic.IEnumerable`1[System.ComponentModel.Composition.CompositionError],System.String)
        mov      rdx, 0xD1FFAB1E      ; 'errors'
        mov      rax, 0xD1FFAB1E      ; code for Microsoft.Internal.Requires:NotNullElements[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.String)
        call     [rax]Microsoft.Internal.Requires:NotNullElements[System.__Canon](System.Collections.Generic.IEnumerable`1[System.__Canon],System.String)
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
-       je       G_M65036_IG09
+       je       G_M65036_IG15
 						;; size=58 bbWeight=1 PerfScore 9.25
 G_M65036_IG04:
-       mov      esi, 1
-       mov      rdi, 0xD1FFAB1E      ; System.ComponentModel.Composition.CompositionError[]
-       call     CORINFO_HELP_NEWARR_1_OBJ
+       mov      rsi, r15
+       mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable:ICollectionToArray[System.ComponentModel.Composition.CompositionError](System.Collections.Generic.ICollection`1[System.ComponentModel.Composition.CompositionError]):System.ComponentModel.Composition.CompositionError[]
+       mov      rax, 0xD1FFAB1E      ; code for System.Linq.Enumerable:ICollectionToArray[System.__Canon](System.Collections.Generic.ICollection`1[System.__Canon]):System.__Canon[]
+       call     [rax]System.Linq.Enumerable:ICollectionToArray[System.__Canon](System.Collections.Generic.ICollection`1[System.__Canon]):System.__Canon[]
        mov      rbx, rax
-       mov      r8d, 1
-       mov      rdi, r15
-       mov      rdx, rbx
-       xor      esi, esi
-       xor      ecx, ecx
-       mov      rax, 0xD1FFAB1E      ; code for System.Array:Copy(System.Array,int,System.Array,int,int)
-       call     [rax]System.Array:Copy(System.Array,int,System.Array,int,int)
+       test     rbx, rbx
+       jne      SHORT G_M65036_IG06
+						;; size=33 bbWeight=1 PerfScore 5.25
+G_M65036_IG05:
+       mov      edi, 2
+       mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowArgumentNullException(int)
+       call     [rax]System.ThrowHelper:ThrowArgumentNullException(int)
+       int3     
+						;; size=18 bbWeight=0.50 PerfScore 1.88
+G_M65036_IG06:
+       cmp      dword ptr [rbx+0x08], 0
+       jne      SHORT G_M65036_IG09
+						;; size=6 bbWeight=1 PerfScore 4.00
+G_M65036_IG07:
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       G_M65036_IG16
+						;; size=19 bbWeight=0.50 PerfScore 2.12
+G_M65036_IG08:
+       mov      rdi, 0xD1FFAB1E      ; data for System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]:<Empty>k__BackingField
+       mov      rsi, gword ptr [rdi]
+       jmp      SHORT G_M65036_IG10
+						;; size=15 bbWeight=0.50 PerfScore 2.12
+G_M65036_IG09:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        lea      rdi, bword ptr [r15+0x08]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        mov      rsi, r15
+						;; size=33 bbWeight=0.50 PerfScore 1.75
+G_M65036_IG10:
        lea      rdi, bword ptr [r13+0x70]
        call     CORINFO_HELP_ASSIGN_REF
        mov      rax, r13
-						;; size=96 bbWeight=1 PerfScore 11.50
-G_M65036_IG05:
+						;; size=12 bbWeight=1 PerfScore 1.75
+G_M65036_IG11:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=9 bbWeight=1 PerfScore 3.50
-G_M65036_IG06:
+G_M65036_IG12:
        mov      edi, 0x2242
        mov      rsi, 0xD1FFAB1E
        call     CORINFO_HELP_STRCNS
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.ArgumentNullException:Throw(System.String)
        call     [rax]System.ArgumentNullException:Throw(System.String)
        int3     
 						;; size=36 bbWeight=0.50 PerfScore 2.62
-G_M65036_IG07:
+G_M65036_IG13:
        mov      edi, 0x2174
        mov      rsi, 0xD1FFAB1E
        call     CORINFO_HELP_STRCNS
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.ArgumentNullException:Throw(System.String)
        call     [rax]System.ArgumentNullException:Throw(System.String)
        int3     
 						;; size=36 bbWeight=0.50 PerfScore 2.62
-G_M65036_IG08:
+G_M65036_IG14:
        mov      edi, 0x2238
        mov      rsi, 0xD1FFAB1E
        call     CORINFO_HELP_STRCNS
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.ArgumentNullException:Throw(System.String)
        call     [rax]System.ArgumentNullException:Throw(System.String)
        int3     
 						;; size=36 bbWeight=0.50 PerfScore 2.62
-G_M65036_IG09:
+G_M65036_IG15:
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Enumerable
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_NONGCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_NONGCSTATIC_BASE
        jmp      G_M65036_IG04
 						;; size=27 bbWeight=0 PerfScore 0.00
+G_M65036_IG16:
+       mov      rdi, 0xD1FFAB1E      ; System.Collections.ObjectModel.ReadOnlyCollection`1[System.ComponentModel.Composition.CompositionError]
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      G_M65036_IG08
+						;; size=27 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 444, prolog size 13, PerfScore 53.88, instruction count 96, allocated bytes for code 444 (MethodHash=d76c01f3) for method System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException (FullOpts)
+; Total bytes of code 511, prolog size 13, PerfScore 61.25, instruction count 108, allocated bytes for code 511 (MethodHash=d76c01f3) for method System.ComponentModel.ExceptionBuilder:CreateCannotGetExportedValue(System.ComponentModel.Composition.Primitives.ComposablePart,System.ComponentModel.Composition.Primitives.ExportDefinition,System.Exception):System.ComponentModel.Composition.CompositionException (FullOpts)
 ; ============================================================

49 (6.81 % of base) - System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):this

 ; Assembly listing for method System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):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; 10 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T02] (  6,  6   )     ref  ->  rbx         this class-hnd single-def <System.Net.Http.Metrics.MetricsHandler>
 ;  V01 arg1         [V01,T11] (  3,  3   )     ref  ->  r13         class-hnd single-def <System.Net.Http.HttpMessageHandler>
 ;  V02 arg2         [V02,T10] (  4,  3.50)     ref  ->  r14         class-hnd single-def <System.Diagnostics.Metrics.IMeterFactory>
 ;  V03 arg3         [V03,T07] (  5,  5   )   byref  ->  r15         single-def
 ;  V04 OutArgs      [V04    ] (  1,  1   )  struct ( 8) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <UNNAMED>
 ;* V05 tmp1         [V05    ] (  0,  0   )   byref  ->  zero-ref   
 ;* V06 tmp2         [V06    ] (  0,  0   )   byref  ->  zero-ref    single-def
-;  V07 tmp3         [V07,T24] (  3,  2   )     ref  ->  rsi        
+;  V07 tmp3         [V07,T25] (  3,  2   )     ref  ->  rsi        
 ;* V08 tmp4         [V08    ] (  0,  0   )   byref  ->  zero-ref    single-def
-;  V09 tmp5         [V09,T22] (  4,  3.50)     ref  ->  rsi        
+;  V09 tmp5         [V09,T23] (  4,  3.50)     ref  ->  rsi        
 ;  V10 tmp6         [V10,T03] (  4,  8   )     ref  ->  r15         class-hnd single-def "impAppendStmt" <System.Object>
 ;  V11 tmp7         [V11,T04] (  4,  8   )     ref  ->  r14         class-hnd single-def "Inlining Arg" <System.Diagnostics.Metrics.Meter>
-;  V12 tmp8         [V12,T27] (  2,  2   )     ref  ->  rsi         class-hnd exact single-def "Inline return value spill temp" <System.Diagnostics.Metrics.UpDownCounter`1[long]>
+;  V12 tmp8         [V12,T28] (  2,  2   )     ref  ->  rsi         class-hnd exact single-def "Inline return value spill temp" <System.Diagnostics.Metrics.UpDownCounter`1[long]>
 ;* V13 tmp9         [V13    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Diagnostics.Metrics.Meter+<>c__DisplayClass41_0`1[long]>
 ;  V14 tmp10        [V14,T00] ( 11, 11   )     ref  ->  r13         class-hnd exact single-def "Inline stloc first use temp" <System.Diagnostics.Metrics.Meter+<>c__DisplayClass41_0`1[long]>
 ;  V15 tmp11        [V15,T05] (  4,  8   )     ref  ->  r12         class-hnd exact single-def "NewObj constructor temp" <System.Func`1[System.Diagnostics.Metrics.Instrument]>
 ;* V16 tmp12        [V16    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "impAppendStmt" <System.RuntimeType>
 ;  V17 tmp13        [V17,T14] (  2,  4   )     ref  ->  [rbp-0x30]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
 ;  V18 tmp14        [V18,T15] (  2,  4   )     ref  ->  [rbp-0x38]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
 ;  V19 tmp15        [V19,T16] (  2,  4   )     ref  ->  [rbp-0x40]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
 ;  V20 tmp16        [V20,T17] (  2,  4   )     ref  ->  [rbp-0x48]  class-hnd spill-single-def "impAppendStmt" <System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
-;  V21 tmp17        [V21,T28] (  2,  2   )     ref  ->  rsi         class-hnd exact single-def "Inline return value spill temp" <System.Diagnostics.Metrics.Histogram`1[double]>
+;  V21 tmp17        [V21,T29] (  2,  2   )     ref  ->  rsi         class-hnd exact single-def "Inline return value spill temp" <System.Diagnostics.Metrics.Histogram`1[double]>
 ;* V22 tmp18        [V22    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp" <System.Diagnostics.Metrics.Meter+<>c__DisplayClass39_0`1[double]>
-;  V23 tmp19        [V23,T01] ( 11, 11   )     ref  ->  r14         class-hnd exact single-def "Inline stloc first use temp" <System.Diagnostics.Metrics.Meter+<>c__DisplayClass39_0`1[double]>
-;* V24 tmp20        [V24    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.Diagnostics.Metrics.InstrumentAdvice`1[double]>
-;  V25 tmp21        [V25,T06] (  4,  8   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Func`1[System.Diagnostics.Metrics.Instrument]>
+;  V23 tmp19        [V23,T01] ( 11, 11   )     ref  ->  r13         class-hnd exact single-def "Inline stloc first use temp" <System.Diagnostics.Metrics.Meter+<>c__DisplayClass39_0`1[double]>
+;  V24 tmp20        [V24,T18] (  2,  4   )     ref  ->  r14         class-hnd exact single-def "Inlining Arg" <System.Diagnostics.Metrics.InstrumentAdvice`1[double]>
+;  V25 tmp21        [V25,T06] (  4,  8   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.Func`1[System.Diagnostics.Metrics.Instrument]>
 ;* V26 tmp22        [V26    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "impAppendStmt" <System.RuntimeType>
-;  V27 tmp23        [V27,T18] (  2,  4   )     ref  ->  r12         class-hnd exact single-def "impAppendStmt" <System.String>
-;  V28 tmp24        [V28,T19] (  2,  4   )     ref  ->  [rbp-0x50]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
-;  V29 tmp25        [V29,T20] (  2,  4   )     ref  ->  [rbp-0x58]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
-;  V30 tmp26        [V30,T21] (  2,  4   )     ref  ->  [rbp-0x60]  class-hnd spill-single-def "impAppendStmt" <System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
+;  V27 tmp23        [V27,T19] (  2,  4   )     ref  ->  r12         class-hnd exact single-def "impAppendStmt" <System.String>
+;  V28 tmp24        [V28,T20] (  2,  4   )     ref  ->  [rbp-0x50]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
+;  V29 tmp25        [V29,T21] (  2,  4   )     ref  ->  [rbp-0x58]  class-hnd exact spill-single-def "impAppendStmt" <System.String>
+;  V30 tmp26        [V30,T22] (  2,  4   )     ref  ->  [rbp-0x60]  class-hnd spill-single-def "impAppendStmt" <System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]>
 ;  V31 tmp27        [V31,T12] (  3,  4   )     ref  ->  rax         single-def "argument with side effect"
 ;  V32 tmp28        [V32,T13] (  3,  4   )     ref  ->  rax         single-def "argument with side effect"
-;  V33 cse0         [V33,T23] (  3,  3   )     ref  ->  [rbp-0x68]  spill-single-def "CSE #08: moderate"
+;  V33 cse0         [V33,T24] (  3,  3   )     ref  ->  [rbp-0x68]  spill-single-def "CSE #08: moderate"
 ;  V34 rat0         [V34,T08] (  4,  7   )     ref  ->  rsi         "replacement local"
-;  V35 rat1         [V35,T25] (  3,  2   )    long  ->  rdi         "CSE for expectedClsNode"
+;  V35 rat1         [V35,T26] (  3,  2   )    long  ->  rdi         "CSE for expectedClsNode"
 ;  V36 rat2         [V36,T09] (  4,  7   )     ref  ->  rsi         "replacement local"
-;  V37 rat3         [V37,T26] (  3,  2   )    long  ->  rdi         "CSE for expectedClsNode"
+;  V37 rat3         [V37,T27] (  3,  2   )    long  ->  rdi         "CSE for expectedClsNode"
 ;
 ; Lcl frame size = 72
 
 G_M65200_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        sub      rsp, 72
        lea      rbp, [rsp+0x70]
        mov      rbx, rdi
        mov      r13, rsi
        mov      r14, rdx
        mov      r15, rcx
 						;; size=31 bbWeight=1 PerfScore 7.75
 G_M65200_IG02:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.HttpMessageHandler:.ctor():this
        call     [rax]System.Net.Http.HttpMessageHandler:.ctor():this
        lea      rdi, bword ptr [rbx+0x08]
        mov      rsi, r13
        call     CORINFO_HELP_ASSIGN_REF
        test     r14, r14
        je       SHORT G_M65200_IG04
 						;; size=32 bbWeight=1 PerfScore 6.50
 G_M65200_IG03:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; 'System.Net.Http'
        xor      rdx, rdx
        xor      rcx, rcx
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.MeterFactoryExtensions:Create(System.Diagnostics.Metrics.IMeterFactory,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):System.Diagnostics.Metrics.Meter
        call     [rax]System.Diagnostics.Metrics.MeterFactoryExtensions:Create(System.Diagnostics.Metrics.IMeterFactory,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]):System.Diagnostics.Metrics.Meter
        mov      rsi, rax
        jmp      SHORT G_M65200_IG05
 						;; size=34 bbWeight=0.50 PerfScore 3.25
 G_M65200_IG04:
        xor      rsi, rsi
 						;; size=2 bbWeight=0.50 PerfScore 0.12
 G_M65200_IG05:
        test     rsi, rsi
        jne      SHORT G_M65200_IG08
 						;; size=5 bbWeight=1 PerfScore 1.25
 G_M65200_IG06:
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M65200_IG15
 						;; size=19 bbWeight=0.50 PerfScore 2.12
 G_M65200_IG07:
        mov      rdi, 0xD1FFAB1E      ; data for System.Net.Http.Metrics.MetricsHandler+SharedMeter:<Instance>k__BackingField
        mov      rsi, gword ptr [rdi]
 						;; size=13 bbWeight=0.50 PerfScore 1.12
 G_M65200_IG08:
        mov      rdi, r15
        call     CORINFO_HELP_CHECKED_ASSIGN_REF
        mov      r14, gword ptr [r15]
        cmp      byte  ptr [r14], r14b
        mov      rdi, 0xD1FFAB1E      ; System.Diagnostics.Metrics.Meter+<>c__DisplayClass41_0`1[long]
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        lea      rdi, bword ptr [r13+0x08]
        mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; 'http.client.active_requests'
        mov      gword ptr [r13+0x10], rdi
        mov      rdi, 0xD1FFAB1E      ; '{request}'
        mov      gword ptr [r13+0x18], rdi
        mov      rdi, 0xD1FFAB1E      ; 'Number of outbound HTTP requests that are currently active on t'
        mov      gword ptr [r13+0x20], rdi
        xor      rdi, rdi
        mov      gword ptr [r13+0x28], rdi
        mov      rdi, 0xD1FFAB1E      ; System.Func`1[System.Diagnostics.Metrics.Instrument]
        call     CORINFO_HELP_NEWSFAST
        mov      r12, rax
        mov      rax, gword ptr [r13+0x10]
        mov      gword ptr [rbp-0x30], rax
        mov      rcx, gword ptr [r13+0x18]
        mov      gword ptr [rbp-0x38], rcx
        mov      rdx, gword ptr [r13+0x20]
        mov      gword ptr [rbp-0x40], rdx
        mov      r8, gword ptr [r13+0x28]
        mov      gword ptr [rbp-0x68], r8
        mov      gword ptr [rbp-0x48], r8
        lea      rdi, bword ptr [r12+0x08]
        mov      rsi, r13
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Meter+<>c__DisplayClass41_0`1[long]:<CreateUpDownCounter>b__0():System.Diagnostics.Metrics.Instrument:this
        mov      qword ptr [r12+0x18], rdi
        mov      gword ptr [rsp], r12
        mov      rdi, r14
        mov      rdx, gword ptr [rbp-0x30]
        mov      rcx, gword ptr [rbp-0x38]
        mov      r8, gword ptr [rbp-0x40]
        mov      r9, gword ptr [rbp-0x48]
        mov      rsi, 0xD1FFAB1E      ; 'System.Diagnostics.Metrics.UpDownCounter`1[System.Int64]'
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Meter:GetOrCreateInstrument[long](System.Type,System.String,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]],System.Func`1[System.Diagnostics.Metrics.Instrument]):System.Diagnostics.Metrics.Instrument:this
        call     [rax]System.Diagnostics.Metrics.Meter:GetOrCreateInstrument[long](System.Type,System.String,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]],System.Func`1[System.Diagnostics.Metrics.Instrument]):System.Diagnostics.Metrics.Instrument:this
        mov      rsi, rax
        test     rsi, rsi
        je       SHORT G_M65200_IG10
 						;; size=227 bbWeight=1 PerfScore 42.25
 G_M65200_IG09:
        mov      rdi, 0xD1FFAB1E      ; System.Diagnostics.Metrics.UpDownCounter`1[long]
        cmp      qword ptr [rsi], rdi
-       jne      G_M65200_IG17
+       jne      G_M65200_IG18
 						;; size=19 bbWeight=0.50 PerfScore 2.12
 G_M65200_IG10:
        lea      rdi, bword ptr [rbx+0x10]
        call     CORINFO_HELP_ASSIGN_REF
        mov      r15, gword ptr [r15]
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       G_M65200_IG16
+						;; size=31 bbWeight=1 PerfScore 7.75
+G_M65200_IG11:
+       mov      rdi, 0xD1FFAB1E      ; data for System.Net.Http.DiagnosticsHelper:<ShortHistogramAdvice>k__BackingField
+       mov      r14, gword ptr [rdi]
        cmp      byte  ptr [r15], r15b
        mov      rdi, 0xD1FFAB1E      ; System.Diagnostics.Metrics.Meter+<>c__DisplayClass39_0`1[double]
        call     CORINFO_HELP_NEWSFAST
-       mov      r14, rax
-       lea      rdi, bword ptr [r14+0x08]
+       mov      r13, rax
+       lea      rdi, bword ptr [r13+0x08]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; 'http.client.request.duration'
-       mov      gword ptr [r14+0x10], rdi
+       mov      gword ptr [r13+0x10], rdi
        mov      rdi, 0xD1FFAB1E      ; 's'
-       mov      gword ptr [r14+0x18], rdi
+       mov      gword ptr [r13+0x18], rdi
        mov      rdi, 0xD1FFAB1E      ; 'Duration of HTTP client requests.'
-       mov      gword ptr [r14+0x20], rdi
+       mov      gword ptr [r13+0x20], rdi
        xor      rdi, rdi
-       mov      gword ptr [r14+0x28], rdi
-       mov      rdi, 0xD1FFAB1E      ; const ptr
-       mov      rsi, gword ptr [rdi]
-       lea      rdi, bword ptr [r14+0x30]
+       mov      gword ptr [r13+0x28], rdi
+       lea      rdi, bword ptr [r13+0x30]
+       mov      rsi, r14
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; System.Func`1[System.Diagnostics.Metrics.Instrument]
        call     CORINFO_HELP_NEWSFAST
-       mov      r13, rax
-       mov      r12, gword ptr [r14+0x10]
-       mov      rax, gword ptr [r14+0x18]
+       mov      r14, rax
+       mov      r12, gword ptr [r13+0x10]
+       mov      rax, gword ptr [r13+0x18]
        mov      gword ptr [rbp-0x50], rax
-       mov      rcx, gword ptr [r14+0x20]
+       mov      rcx, gword ptr [r13+0x20]
        mov      gword ptr [rbp-0x58], rcx
        mov      rdx, gword ptr [rbp-0x68]
        mov      gword ptr [rbp-0x60], rdx
-       lea      rdi, bword ptr [r13+0x08]
-       mov      rsi, r14
+       lea      rdi, bword ptr [r14+0x08]
+       mov      rsi, r13
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Meter+<>c__DisplayClass39_0`1[double]:<CreateHistogram>b__0():System.Diagnostics.Metrics.Instrument:this
-       mov      qword ptr [r13+0x18], rdi
-       mov      gword ptr [rsp], r13
+       mov      qword ptr [r14+0x18], rdi
+       mov      gword ptr [rsp], r14
        mov      rdi, r15
        mov      rdx, r12
        mov      rcx, gword ptr [rbp-0x50]
        mov      r8, gword ptr [rbp-0x58]
        mov      r9, gword ptr [rbp-0x60]
        mov      rsi, 0xD1FFAB1E      ; 'System.Diagnostics.Metrics.Histogram`1[System.Double]'
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Metrics.Meter:GetOrCreateInstrument[double](System.Type,System.String,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]],System.Func`1[System.Diagnostics.Metrics.Instrument]):System.Diagnostics.Metrics.Instrument:this
        call     [rax]System.Diagnostics.Metrics.Meter:GetOrCreateInstrument[double](System.Type,System.String,System.String,System.String,System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]],System.Func`1[System.Diagnostics.Metrics.Instrument]):System.Diagnostics.Metrics.Instrument:this
        mov      rsi, rax
        test     rsi, rsi
-						;; size=237 bbWeight=1 PerfScore 41.50
-G_M65200_IG11:
        je       SHORT G_M65200_IG13
-						;; size=2 bbWeight=1 PerfScore 1.00
+						;; size=230 bbWeight=1 PerfScore 39.25
 G_M65200_IG12:
        mov      rdi, 0xD1FFAB1E      ; System.Diagnostics.Metrics.Histogram`1[double]
        cmp      qword ptr [rsi], rdi
-       jne      SHORT G_M65200_IG16
+       jne      SHORT G_M65200_IG17
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M65200_IG13:
        lea      rdi, bword ptr [rbx+0x18]
        call     CORINFO_HELP_ASSIGN_REF
        nop      
 						;; size=10 bbWeight=1 PerfScore 1.75
 G_M65200_IG14:
        add      rsp, 72
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
 G_M65200_IG15:
        mov      rdi, 0xD1FFAB1E      ; System.Net.Http.Metrics.MetricsHandler+SharedMeter
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M65200_IG07
 						;; size=27 bbWeight=0 PerfScore 0.00
 G_M65200_IG16:
-       mov      rsi, rax
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_CHKCASTCLASS
-       call     [rax]CORINFO_HELP_CHKCASTCLASS
-       int3     
-						;; size=16 bbWeight=0 PerfScore 0.00
+       mov      rdi, 0xD1FFAB1E      ; System.Net.Http.DiagnosticsHelper
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      G_M65200_IG11
+						;; size=27 bbWeight=0 PerfScore 0.00
 G_M65200_IG17:
        mov      rsi, rax
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_CHKCASTCLASS
        call     [rax]CORINFO_HELP_CHKCASTCLASS
        int3     
 						;; size=16 bbWeight=0 PerfScore 0.00
+G_M65200_IG18:
+       mov      rsi, rax
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_CHKCASTCLASS
+       call     [rax]CORINFO_HELP_CHKCASTCLASS
+       int3     
+						;; size=16 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 720, prolog size 19, PerfScore 117.12, instruction count 161, allocated bytes for code 720 (MethodHash=405b014f) for method System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):this (FullOpts)
+; Total bytes of code 769, prolog size 19, PerfScore 121.62, instruction count 169, allocated bytes for code 769 (MethodHash=405b014f) for method System.Net.Http.Metrics.MetricsHandler:.ctor(System.Net.Http.HttpMessageHandler,System.Diagnostics.Metrics.IMeterFactory,byref):this (FullOpts)
 ; ============================================================

44 (314.29 % of base) - System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double]

 ; Assembly listing for method System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double] (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rsp based frame
 ; partially interruptible
 ; No PGO data
 ; Final local variable assignments
 ;
 ;# V00 OutArgs      [V00    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;
-; Lcl frame size = 0
+; Lcl frame size = 8
 
 G_M46385_IG01:
-						;; size=0 bbWeight=1 PerfScore 0.00
+       push     rax
+						;; size=1 bbWeight=1 PerfScore 1.00
 G_M46385_IG02:
-       mov      rax, 0xD1FFAB1E      ; const ptr
+       mov      rdi, 0xD1FFAB1E      ; global ptr
+       test     byte  ptr [rdi], 1
+       je       SHORT G_M46385_IG05
+						;; size=15 bbWeight=1 PerfScore 4.25
+G_M46385_IG03:
+       mov      rax, 0xD1FFAB1E      ; data for System.Net.Http.DiagnosticsHelper:<ShortHistogramAdvice>k__BackingField
        mov      rax, gword ptr [rax]
 						;; size=13 bbWeight=1 PerfScore 2.25
-G_M46385_IG03:
+G_M46385_IG04:
+       add      rsp, 8
        ret      
-						;; size=1 bbWeight=1 PerfScore 1.00
+						;; size=5 bbWeight=1 PerfScore 1.25
+G_M46385_IG05:
+       mov      rdi, 0xD1FFAB1E      ; System.Net.Http.DiagnosticsHelper
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
+       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
+       jmp      SHORT G_M46385_IG03
+						;; size=24 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 14, prolog size 0, PerfScore 3.25, instruction count 3, allocated bytes for code 14 (MethodHash=73d74ace) for method System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double] (FullOpts)
+; Total bytes of code 58, prolog size 1, PerfScore 8.75, instruction count 12, allocated bytes for code 58 (MethodHash=73d74ace) for method System.Net.Http.DiagnosticsHelper:get_ShortHistogramAdvice():System.Diagnostics.Metrics.InstrumentAdvice`1[double] (FullOpts)
 ; ============================================================

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

Larger list of diffs: https://gist.github.com/MihuBot/f7b19996b4f84c0c331502ae64ac530e

[MihuBot]

Top method improvements

-422 (-39.59 % of base) - System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection:this

 ; Assembly listing for method System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection: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; 27 single block inlinees; 6 inlinees without PGO data
+; 0 inlinees with PGO data; 13 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T03] ( 12, 15.50)     ref  ->  rbx         this class-hnd single-def <System.Net.HttpWebResponse>
-;  V01 loc0         [V01,T02] ( 12, 18   )     ref  ->  [rbp-0x28]  do-not-enreg[M] class-hnd EH-live <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
+;  V01 loc0         [V01,T02] ( 12, 18   )     ref  ->  [rbp-0x20]  do-not-enreg[M] class-hnd EH-live <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
 ;* V02 loc1         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]>
 ;* V03 loc2         [V03    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]>
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V05 tmp1         [V05,T12] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Net.WebHeaderCollection>
+;  V05 tmp1         [V05,T10] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Net.WebHeaderCollection>
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBR] multireg-ret "Return value temp for multireg return" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]>
 ;* V07 tmp3         [V07    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "impAppendStmt" <System.Net.WebHeaderCollection>
 ;* V08 tmp4         [V08    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "impAppendStmt" <System.String>
 ;* V09 tmp5         [V09    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBR] multireg-ret "Return value temp for multireg return" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]>
 ;* V10 tmp6         [V10    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "impAppendStmt" <System.Net.WebHeaderCollection>
 ;* V11 tmp7         [V11    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "impAppendStmt" <System.String>
 ;* V12 tmp8         [V12    ] (  0,  0   )   ubyte  ->  zero-ref    "Inlining Arg"
-;  V13 tmp9         [V13,T20] (  2,  2   )     ref  ->  rsi         class-hnd single-def "Inlining Arg" <System.StringComparer>
+;  V13 tmp9         [V13,T12] (  2,  2   )     ref  ->  rsi         class-hnd single-def "Inlining Arg" <System.StringComparer>
 ;* V14 tmp10        [V14    ] (  0,  0   )     ref  ->  zero-ref    single-def
-;  V15 tmp11        [V15,T19] (  5,  2.50)     ref  ->  rsi        
-;  V16 tmp12        [V16,T21] (  3,  1.50)     ref  ->  r13         class-hnd "Inline return value spill temp" <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V17 tmp13        [V17,T15] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "Inlining Arg" <System.Net.Http.Headers.HttpResponseHeaders>
-;  V18 tmp14        [V18,T13] (  4,  4   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24>
-;  V19 tmp15        [V19,T22] (  3,  1.50)     ref  ->  r13         class-hnd exact "Inline return value spill temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V20 tmp16        [V20,T16] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "Inlining Arg" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;* V21 tmp17        [V21    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;  V22 tmp18        [V22,T26] (  3,  1.50)     int  ->  r14         "Inline stloc first use temp"
-;  V23 tmp19        [V23,T10] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;* V24 tmp20        [V24    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg" <System.__Canon>
-;* V25 tmp21        [V25    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.String>
-;  V26 tmp22        [V26,T23] (  3,  1.50)     ref  ->  r13         class-hnd "Inline return value spill temp" <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V27 tmp23        [V27,T17] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "Inlining Arg" <System.Net.Http.Headers.HttpContentHeaders>
-;  V28 tmp24        [V28,T14] (  4,  4   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24>
-;  V29 tmp25        [V29,T24] (  3,  1.50)     ref  ->  r13         class-hnd exact "Inline return value spill temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V30 tmp26        [V30,T18] (  3,  3   )     ref  ->  r15         class-hnd exact single-def "Inlining Arg" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;* V31 tmp27        [V31    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;  V32 tmp28        [V32,T27] (  3,  1.50)     int  ->  r14         "Inline stloc first use temp"
-;  V33 tmp29        [V33,T11] (  5,  5   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;* V34 tmp30        [V34    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg" <System.__Canon>
-;* V35 tmp31        [V35    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.String>
-;  V36 tmp32        [V36,T06] (  2,  8   )     ref  ->  r15         "field V02.key (fldOffset=0x0)" P-INDEP
-;  V37 tmp33        [V37,T07] (  2,  8   )     ref  ->  rsi         "field V02.value (fldOffset=0x8)" P-INDEP
-;  V38 tmp34        [V38,T08] (  2,  8   )     ref  ->  r15         "field V03.key (fldOffset=0x0)" P-INDEP
-;  V39 tmp35        [V39,T09] (  2,  8   )     ref  ->  rsi         "field V03.value (fldOffset=0x8)" P-INDEP
-;* V40 tmp36        [V40    ] (  0,  0   )     ref  ->  zero-ref    "field V06.key (fldOffset=0x0)" P-DEP
-;* V41 tmp37        [V41    ] (  0,  0   )     ref  ->  zero-ref    "field V06.value (fldOffset=0x8)" P-DEP
-;* V42 tmp38        [V42    ] (  0,  0   )     ref  ->  zero-ref    "field V09.key (fldOffset=0x0)" P-DEP
-;* V43 tmp39        [V43    ] (  0,  0   )     ref  ->  zero-ref    "field V09.value (fldOffset=0x8)" P-DEP
-;  V44 tmp40        [V44,T04] (  2, 16   )     ref  ->  rdx         "argument with side effect"
-;  V45 tmp41        [V45,T00] (  3, 24   )     ref  ->  r14         "argument with side effect"
-;  V46 tmp42        [V46,T05] (  2, 16   )     ref  ->  rdx         "argument with side effect"
-;  V47 tmp43        [V47,T01] (  3, 24   )     ref  ->  r14         "argument with side effect"
-;  V48 cse0         [V48,T25] (  3,  1.50)     ref  ->  rdi         "CSE #05: moderate"
-;  V49 rat0         [V49    ] (  1,  1   )    long  ->  [rbp-0x30]  do-not-enreg[V] "PSPSym"
+;  V15 tmp11        [V15,T11] (  5,  2.50)     ref  ->  rsi        
+;* V16 tmp12        [V16    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg" <System.__Canon>
+;* V17 tmp13        [V17    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.String>
+;* V18 tmp14        [V18    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg" <System.__Canon>
+;* V19 tmp15        [V19    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.String>
+;  V20 tmp16        [V20,T06] (  2,  8   )     ref  ->  r15         "field V02.key (fldOffset=0x0)" P-INDEP
+;  V21 tmp17        [V21,T07] (  2,  8   )     ref  ->  rsi         "field V02.value (fldOffset=0x8)" P-INDEP
+;  V22 tmp18        [V22,T08] (  2,  8   )     ref  ->  r15         "field V03.key (fldOffset=0x0)" P-INDEP
+;  V23 tmp19        [V23,T09] (  2,  8   )     ref  ->  rsi         "field V03.value (fldOffset=0x8)" P-INDEP
+;* V24 tmp20        [V24    ] (  0,  0   )     ref  ->  zero-ref    "field V06.key (fldOffset=0x0)" P-DEP
+;* V25 tmp21        [V25    ] (  0,  0   )     ref  ->  zero-ref    "field V06.value (fldOffset=0x8)" P-DEP
+;* V26 tmp22        [V26    ] (  0,  0   )     ref  ->  zero-ref    "field V09.key (fldOffset=0x0)" P-DEP
+;* V27 tmp23        [V27    ] (  0,  0   )     ref  ->  zero-ref    "field V09.value (fldOffset=0x8)" P-DEP
+;  V28 tmp24        [V28,T04] (  2, 16   )     ref  ->  rdx         "argument with side effect"
+;  V29 tmp25        [V29,T00] (  3, 24   )     ref  ->  r14         "argument with side effect"
+;  V30 tmp26        [V30,T05] (  2, 16   )     ref  ->  rdx         "argument with side effect"
+;  V31 tmp27        [V31,T01] (  3, 24   )     ref  ->  r14         "argument with side effect"
+;  V32 cse0         [V32,T13] (  3,  1.50)     ref  ->  rdi         "CSE #05: moderate"
+;  V33 rat0         [V33    ] (  1,  1   )    long  ->  [rbp-0x30]  do-not-enreg[V] "PSPSym"
 ;
-; Lcl frame size = 16
+; Lcl frame size = 24
 
 G_M7504_IG01:
        push     rbp
        push     r15
        push     r14
-       push     r13
        push     rbx
-       sub      rsp, 16
+       sub      rsp, 24
        lea      rbp, [rsp+0x30]
        mov      qword ptr [rbp-0x30], rsp
        mov      rbx, rdi
-						;; size=24 bbWeight=1 PerfScore 7.00
+						;; size=22 bbWeight=1 PerfScore 6.00
 G_M7504_IG02:
        cmp      gword ptr [rbx+0x08], 0
-       je       G_M7504_IG26
+       je       G_M7504_IG15
        cmp      gword ptr [rbx+0x20], 0
-       jne      G_M7504_IG24
+       jne      G_M7504_IG13
 						;; size=22 bbWeight=1 PerfScore 8.00
 G_M7504_IG03:
        mov      rdi, 0xD1FFAB1E      ; System.Net.WebHeaderCollection
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
-       je       G_M7504_IG27
+       je       G_M7504_IG16
 						;; size=37 bbWeight=0.50 PerfScore 2.88
 G_M7504_IG04:
        mov      rdi, 0xD1FFAB1E      ; data for System.Collections.Specialized.NameObjectCollectionBase:s_defaultComparer
        mov      rdi, gword ptr [rdi]
        mov      rsi, rdi
        test     rsi, rsi
        cmove    rsi, rdi
        lea      rdi, bword ptr [r15+0x10]
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Specialized.NameObjectCollectionBase:Reset():this
        call     [rax]System.Collections.Specialized.NameObjectCollectionBase:Reset():this
        lea      rdi, bword ptr [rbx+0x20]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, gword ptr [rbx+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.HttpResponseMessage:get_Headers():System.Net.Http.Headers.HttpResponseHeaders:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Net.Http.HttpResponseMessage:get_Headers():System.Net.Http.Headers.HttpResponseHeaders:this
-       mov      r15, rax
-       cmp      dword ptr [r15+0x10], 0
-       je       SHORT G_M7504_IG05
-       mov      rdi, 0xD1FFAB1E      ; System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24
-       call     CORINFO_HELP_NEWSFAST
-       mov      r13, rax
-       xor      edi, edi
-       mov      dword ptr [r13+0x18], edi
-       lea      rdi, bword ptr [r13+0x08]
-       mov      rsi, r15
-       call     CORINFO_HELP_ASSIGN_REF
-       jmp      SHORT G_M7504_IG09
-						;; size=125 bbWeight=0.50 PerfScore 14.38
+       mov      rdi, rax
+       mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+       cmp      dword ptr [rdi], edi
+       call     [rax]System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+       mov      gword ptr [rbp-0x20], rax
+						;; size=98 bbWeight=0.50 PerfScore 12.75
 G_M7504_IG05:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M7504_IG28
-						;; size=19 bbWeight=0.50 PerfScore 2.12
-G_M7504_IG06:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Value
-       mov      r15, gword ptr [rdi]
-       mov      r14d, dword ptr [r15+0x08]
-       test     r14d, r14d
-       je       SHORT G_M7504_IG07
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       call     CORINFO_HELP_NEWSFAST
-       mov      r13, rax
-       mov      dword ptr [r13+0x08], -1
-       mov      dword ptr [r13+0x0C], r14d
-       lea      rdi, bword ptr [r13+0x10]
-       mov      rsi, r15
-       call     CORINFO_HELP_ASSIGN_REF
-       jmp      SHORT G_M7504_IG09
-						;; size=66 bbWeight=0.50 PerfScore 6.38
-G_M7504_IG07:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M7504_IG29
-						;; size=19 bbWeight=0.50 PerfScore 2.12
-G_M7504_IG08:
-       mov      rdi, 0xD1FFAB1E      ; data for System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Empty
-       mov      r13, gword ptr [rdi]
-						;; size=13 bbWeight=0.50 PerfScore 1.12
-G_M7504_IG09:
-       mov      gword ptr [rbp-0x28], r13
-						;; size=4 bbWeight=0.50 PerfScore 0.50
-G_M7504_IG10:
-       jmp      SHORT G_M7504_IG12
+       jmp      SHORT G_M7504_IG07
 						;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M7504_IG11:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG06:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]]:get_Current():System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]:this
        call     [r11]System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]]:get_Current():System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]:this
        mov      r15, rax
        mov      rsi, rdx
        mov      r14, gword ptr [rbx+0x20]
        mov      rdi, 0xD1FFAB1E      ; ', '
        mov      rax, 0xD1FFAB1E      ; code for System.String:Join(System.String,System.Collections.Generic.IEnumerable`1[System.String]):System.String
        call     [rax]System.String:Join(System.String,System.Collections.Generic.IEnumerable`1[System.String]):System.String
        mov      rdx, rax
        mov      rdi, r14
        mov      rsi, r15
        mov      rax, qword ptr [r14]
        mov      rax, qword ptr [rax+0x50]
        call     [rax+0x08]System.Collections.Specialized.NameValueCollection:Set(System.String,System.String):this
 						;; size=68 bbWeight=4 PerfScore 72.00
-G_M7504_IG12:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG07:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():ubyte:this
        call     [r11]System.Collections.IEnumerator:MoveNext():ubyte:this
        test     eax, eax
-       jne      SHORT G_M7504_IG11
+       jne      SHORT G_M7504_IG06
 						;; size=21 bbWeight=4 PerfScore 22.00
-G_M7504_IG13:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG08:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
        mov      rdi, gword ptr [rbx+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.HttpResponseMessage:get_Content():System.Net.Http.HttpContent:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Net.Http.HttpResponseMessage:get_Content():System.Net.Http.HttpContent:this
        test     rax, rax
-       je       G_M7504_IG24
+       je       G_M7504_IG13
        mov      rdi, gword ptr [rbx+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.HttpResponseMessage:get_Content():System.Net.Http.HttpContent:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Net.Http.HttpResponseMessage:get_Content():System.Net.Http.HttpContent:this
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.HttpContent:get_Headers():System.Net.Http.Headers.HttpContentHeaders:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Net.Http.HttpContent:get_Headers():System.Net.Http.Headers.HttpContentHeaders:this
-       mov      r15, rax
-       cmp      dword ptr [r15+0x10], 0
-       jne      SHORT G_M7504_IG18
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M7504_IG30
-						;; size=108 bbWeight=0.50 PerfScore 18.50
-G_M7504_IG14:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Value
-       mov      r15, gword ptr [rdi]
-       mov      r14d, dword ptr [r15+0x08]
-       test     r14d, r14d
-       je       SHORT G_M7504_IG15
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       call     CORINFO_HELP_NEWSFAST
-       mov      r13, rax
-       mov      dword ptr [r13+0x08], -1
-       mov      dword ptr [r13+0x0C], r14d
-       lea      rdi, bword ptr [r13+0x10]
-       mov      rsi, r15
-       call     CORINFO_HELP_ASSIGN_REF
-       jmp      SHORT G_M7504_IG17
-						;; size=66 bbWeight=0.50 PerfScore 6.38
-G_M7504_IG15:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M7504_IG31
-						;; size=19 bbWeight=0.50 PerfScore 2.12
-G_M7504_IG16:
-       mov      rdi, 0xD1FFAB1E      ; data for System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Empty
-       mov      r13, gword ptr [rdi]
-						;; size=13 bbWeight=0.50 PerfScore 1.12
-G_M7504_IG17:
-       jmp      SHORT G_M7504_IG19
+       mov      rdi, rax
+       mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+       cmp      dword ptr [rdi], edi
+       call     [rax]System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+       mov      gword ptr [rbp-0x20], rax
+						;; size=100 bbWeight=0.50 PerfScore 18.00
+G_M7504_IG09:
+       jmp      SHORT G_M7504_IG11
 						;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M7504_IG18:
-       mov      rdi, 0xD1FFAB1E      ; System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24
-       call     CORINFO_HELP_NEWSFAST
-       mov      r13, rax
-       xor      edi, edi
-       mov      dword ptr [r13+0x18], edi
-       lea      rdi, bword ptr [r13+0x08]
-       mov      rsi, r15
-       call     CORINFO_HELP_ASSIGN_REF
-						;; size=36 bbWeight=0.50 PerfScore 2.25
-G_M7504_IG19:
-       mov      gword ptr [rbp-0x28], r13
-						;; size=4 bbWeight=0.50 PerfScore 0.50
-G_M7504_IG20:
-       jmp      SHORT G_M7504_IG22
-						;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M7504_IG21:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG10:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]]:get_Current():System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]:this
        call     [r11]System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]]:get_Current():System.Collections.Generic.KeyValuePair`2[System.__Canon,System.__Canon]:this
        mov      r15, rax
        mov      rsi, rdx
        mov      r14, gword ptr [rbx+0x20]
        mov      rdi, 0xD1FFAB1E      ; ', '
        mov      rax, 0xD1FFAB1E      ; code for System.String:Join(System.String,System.Collections.Generic.IEnumerable`1[System.String]):System.String
        call     [rax]System.String:Join(System.String,System.Collections.Generic.IEnumerable`1[System.String]):System.String
        mov      rdx, rax
        mov      rdi, r14
        mov      rsi, r15
        mov      rax, qword ptr [r14]
        mov      rax, qword ptr [rax+0x50]
        call     [rax+0x08]System.Collections.Specialized.NameValueCollection:Set(System.String,System.String):this
 						;; size=68 bbWeight=4 PerfScore 72.00
-G_M7504_IG22:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG11:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():ubyte:this
        call     [r11]System.Collections.IEnumerator:MoveNext():ubyte:this
        test     eax, eax
-       jne      SHORT G_M7504_IG21
+       jne      SHORT G_M7504_IG10
 						;; size=21 bbWeight=4 PerfScore 22.00
-G_M7504_IG23:
-       mov      rdi, gword ptr [rbp-0x28]
+G_M7504_IG12:
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
 						;; size=17 bbWeight=0.50 PerfScore 2.12
-G_M7504_IG24:
+G_M7504_IG13:
        mov      rax, gword ptr [rbx+0x20]
 						;; size=4 bbWeight=1 PerfScore 2.00
-G_M7504_IG25:
-       add      rsp, 16
+G_M7504_IG14:
+       add      rsp, 24
        pop      rbx
-       pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=1 PerfScore 3.75
-G_M7504_IG26:
+						;; size=11 bbWeight=1 PerfScore 3.25
+G_M7504_IG15:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowObjectDisposedException(System.Object)
        call     [rax]System.ThrowHelper:ThrowObjectDisposedException(System.Object)
        int3     
 						;; size=16 bbWeight=0.50 PerfScore 1.88
-G_M7504_IG27:
+G_M7504_IG16:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Specialized.NameObjectCollectionBase
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M7504_IG04
 						;; size=27 bbWeight=0 PerfScore 0.00
-G_M7504_IG28:
-       mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M7504_IG06
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M7504_IG29:
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M7504_IG08
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M7504_IG30:
-       mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M7504_IG14
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M7504_IG31:
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M7504_IG16
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M7504_IG32:
+G_M7504_IG17:
        push     rbp
        push     r15
        push     r14
-       push     r13
        push     rbx
-       sub      rsp, 16
+       push     rax
        mov      rbp, qword ptr [rdi]
        mov      qword ptr [rsp], rbp
        lea      rbp, [rbp+0x30]
-						;; size=23 bbWeight=0 PerfScore 0.00
-G_M7504_IG33:
-       cmp      gword ptr [rbp-0x28], 0
-       je       SHORT G_M7504_IG34
-       mov      rdi, gword ptr [rbp-0x28]
+						;; size=18 bbWeight=0 PerfScore 0.00
+G_M7504_IG18:
+       cmp      gword ptr [rbp-0x20], 0
+       je       SHORT G_M7504_IG19
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
 						;; size=24 bbWeight=0 PerfScore 0.00
-G_M7504_IG34:
+G_M7504_IG19:
        nop      
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M7504_IG35:
-       add      rsp, 16
+G_M7504_IG20:
+       add      rsp, 8
        pop      rbx
-       pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0 PerfScore 0.00
-G_M7504_IG36:
+						;; size=11 bbWeight=0 PerfScore 0.00
+G_M7504_IG21:
        push     rbp
        push     r15
        push     r14
-       push     r13
        push     rbx
-       sub      rsp, 16
+       push     rax
        mov      rbp, qword ptr [rdi]
        mov      qword ptr [rsp], rbp
        lea      rbp, [rbp+0x30]
-						;; size=23 bbWeight=0 PerfScore 0.00
-G_M7504_IG37:
-       cmp      gword ptr [rbp-0x28], 0
-       je       SHORT G_M7504_IG38
-       mov      rdi, gword ptr [rbp-0x28]
+						;; size=18 bbWeight=0 PerfScore 0.00
+G_M7504_IG22:
+       cmp      gword ptr [rbp-0x20], 0
+       je       SHORT G_M7504_IG23
+       mov      rdi, gword ptr [rbp-0x20]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
 						;; size=24 bbWeight=0 PerfScore 0.00
-G_M7504_IG38:
+G_M7504_IG23:
        nop      
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M7504_IG39:
-       add      rsp, 16
+G_M7504_IG24:
+       add      rsp, 8
        pop      rbx
-       pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=13 bbWeight=0 PerfScore 0.00
+						;; size=11 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 1066, prolog size 24, PerfScore 276.12, instruction count 244, allocated bytes for code 1066 (MethodHash=4c35e2af) for method System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection:this (FullOpts)
+; Total bytes of code 644, prolog size 22, PerfScore 246.88, instruction count 162, allocated bytes for code 644 (MethodHash=4c35e2af) for method System.Net.HttpWebResponse:get_Headers():System.Net.WebHeaderCollection:this (FullOpts)
 ; ============================================================

-227 (-94.58 % of base) - System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this

 ; Assembly listing for method System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
-; rbp based frame
-; partially interruptible
+; rsp based frame
+; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 7 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  4,  3.50)     ref  ->  rbx         this class-hnd single-def <System.Net.Http.Headers.HttpHeaders>
+;  V00 this         [V00,T00] (  3,  3   )     ref  ->  rdi         this class-hnd single-def <System.Net.Http.Headers.HttpHeaders>
 ;# V01 OutArgs      [V01    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V02 tmp1         [V02,T04] (  3,  2   )     ref  ->  rax         class-hnd "Inline return value spill temp" <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V03 tmp2         [V03,T02] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24>
-;  V04 tmp3         [V04,T05] (  3,  1.50)     ref  ->  rax         class-hnd exact "Inline return value spill temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
-;  V05 tmp4         [V05,T03] (  3,  3   )     ref  ->  rbx         class-hnd exact single-def "Inlining Arg" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;* V06 tmp5         [V06    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]][]>
-;  V07 tmp6         [V07,T06] (  3,  1.50)     int  ->  r15         "Inline stloc first use temp"
-;  V08 tmp7         [V08,T01] (  5,  5   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]>
 ;
-; Lcl frame size = 8
+; Lcl frame size = 0
 
 G_M54155_IG01:
-       push     rbp
-       push     r15
-       push     r14
-       push     rbx
-       push     rax
-       lea      rbp, [rsp+0x20]
-       mov      rbx, rdi
-						;; size=15 bbWeight=1 PerfScore 5.75
+						;; size=0 bbWeight=1 PerfScore 0.00
 G_M54155_IG02:
-       cmp      dword ptr [rbx+0x10], 0
-       jne      SHORT G_M54155_IG08
-						;; size=6 bbWeight=1 PerfScore 4.00
+       mov      rax, 0xD1FFAB1E      ; code for System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+						;; size=10 bbWeight=1 PerfScore 0.25
 G_M54155_IG03:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M54155_IG10
-						;; size=19 bbWeight=0.50 PerfScore 2.12
-G_M54155_IG04:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Value
-       mov      rbx, gword ptr [rdi]
-       mov      r15d, dword ptr [rbx+0x08]
-       test     r15d, r15d
-       je       SHORT G_M54155_IG05
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       call     CORINFO_HELP_NEWSFAST
-       mov      r14, rax
-       mov      dword ptr [r14+0x08], -1
-       mov      dword ptr [r14+0x0C], r15d
-       lea      rdi, bword ptr [r14+0x10]
-       mov      rsi, rbx
-       call     CORINFO_HELP_ASSIGN_REF
-       mov      rax, r14
-       jmp      SHORT G_M54155_IG07
-						;; size=69 bbWeight=0.50 PerfScore 6.50
-G_M54155_IG05:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       SHORT G_M54155_IG11
-						;; size=15 bbWeight=0.50 PerfScore 2.12
-G_M54155_IG06:
-       mov      rdi, 0xD1FFAB1E      ; data for System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:Empty
-       mov      rax, gword ptr [rdi]
-						;; size=13 bbWeight=0.50 PerfScore 1.12
-G_M54155_IG07:
-       jmp      SHORT G_M54155_IG09
-						;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M54155_IG08:
-       mov      rdi, 0xD1FFAB1E      ; System.Net.Http.Headers.HttpHeaders+<GetEnumeratorCore>d__24
-       call     CORINFO_HELP_NEWSFAST
-       mov      r15, rax
-       xor      edi, edi
-       mov      dword ptr [r15+0x18], edi
-       lea      rdi, bword ptr [r15+0x08]
-       mov      rsi, rbx
-       call     CORINFO_HELP_ASSIGN_REF
-       mov      rax, r15
-						;; size=39 bbWeight=0.50 PerfScore 2.38
-G_M54155_IG09:
-       add      rsp, 8
-       pop      rbx
-       pop      r14
-       pop      r15
-       pop      rbp
-       ret      
-						;; size=11 bbWeight=1 PerfScore 3.25
-G_M54155_IG10:
-       mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M54155_IG04
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M54155_IG11:
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      SHORT G_M54155_IG06
-						;; size=24 bbWeight=0 PerfScore 0.00
+       tail.jmp [rax]System.Net.Http.Headers.HttpHeaders:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]]:this
+						;; size=3 bbWeight=1 PerfScore 2.00
 
-; Total bytes of code 240, prolog size 12, PerfScore 28.25, instruction count 56, allocated bytes for code 240 (MethodHash=e0352c74) for method System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this (FullOpts)
+; Total bytes of code 13, prolog size 0, PerfScore 2.25, instruction count 2, allocated bytes for code 13 (MethodHash=e0352c74) for method System.Net.Http.Headers.HttpHeaders:System.Collections.IEnumerable.GetEnumerator():System.Collections.IEnumerator:this (FullOpts)
 ; ============================================================

-151 (-50.33 % of base) - System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this

 ; Assembly listing for method System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
-; partially interruptible
+; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 11 single block inlinees; 3 inlinees without PGO data
+; 0 inlinees with PGO data; 6 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T02] (  3,  3   )     ref  ->  rdi         this class-hnd single-def <System.IO.Packaging.PackagePartCollection>
+;  V00 this         [V00,T01] (  3,  3   )     ref  ->  rdi         this class-hnd single-def <System.IO.Packaging.PackagePartCollection>
 ;# V01 OutArgs      [V01    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;  V02 tmp1         [V02,T00] (  4,  6   )     ref  ->  rbx         class-hnd single-def "Inlining Arg" <System.Collections.Generic.SortedList`2[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
 ;* V03 tmp2         [V03    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline return value spill temp" <System.Collections.Generic.SortedList`2+ValueList[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
-;  V04 tmp3         [V04,T06] (  2,  4   )     ref  ->  r15         class-hnd exact single-def "dup spill" <System.Collections.Generic.SortedList`2+ValueList[System.__Canon,System.__Canon]>
-;  V05 tmp4         [V05,T03] (  5,  4   )     ref  ->  r15        
-;  V06 tmp5         [V06,T04] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.SortedList`2+ValueList[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
+;  V04 tmp3         [V04,T04] (  2,  4   )     ref  ->  rax         class-hnd exact single-def "dup spill" <System.Collections.Generic.SortedList`2+ValueList[System.__Canon,System.__Canon]>
+;  V05 tmp4         [V05,T05] (  4,  3.50)     ref  ->  rax        
+;  V06 tmp5         [V06,T02] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.SortedList`2+ValueList[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
 ;* V07 tmp6         [V07    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "Inline stloc first use temp" <System.Collections.Generic.SortedList`2+ValueList[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
-;  V08 tmp7         [V08,T09] (  3,  2   )     ref  ->  rax         class-hnd "Inline return value spill temp" <System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]>
-;  V09 tmp8         [V09,T05] (  4,  4   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.SortedList`2+SortedListValueEnumerator[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
+;* V08 tmp7         [V08    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline return value spill temp" <System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]>
+;  V09 tmp8         [V09,T03] (  4,  4   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.SortedList`2+SortedListValueEnumerator[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
 ;* V10 tmp9         [V10    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inline stloc first use temp" <System.Collections.Generic.SortedList`2+SortedListValueEnumerator[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]>
-;  V11 tmp10        [V11,T07] (  3,  3   )     ref  ->  r15         class-hnd single-def "Inlining Arg" <System.Collections.Generic.SortedList`2[System.__Canon,System.__Canon]>
-;  V12 tmp11        [V12,T10] (  3,  1.50)     ref  ->  rax         class-hnd exact "Inline return value spill temp" <System.SZGenericArrayEnumerator`1[System.IO.Packaging.PackagePart]>
-;  V13 tmp12        [V13,T08] (  3,  3   )     ref  ->  r15         class-hnd single-def "Inlining Arg" <System.IO.Packaging.PackagePart[]>
-;* V14 tmp13        [V14    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline stloc first use temp" <System.IO.Packaging.PackagePart[]>
-;  V15 tmp14        [V15,T11] (  3,  1.50)     int  ->  rbx         "Inline stloc first use temp"
-;  V16 tmp15        [V16,T01] (  5,  5   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.SZGenericArrayEnumerator`1[System.IO.Packaging.PackagePart]>
+;  V11 tmp10        [V11,T06] (  3,  3   )     ref  ->  rbx         class-hnd single-def "Inlining Arg" <System.Collections.Generic.SortedList`2[System.__Canon,System.__Canon]>
+;  V12 cse0         [V12,T07] (  3,  2.50)     ref  ->  rbx         "CSE #01: aggressive"
 ;
-; Lcl frame size = 8
+; Lcl frame size = 0
 
 G_M63846_IG01:
        push     rbp
        push     r15
-       push     r14
        push     rbx
-       push     rax
-       lea      rbp, [rsp+0x20]
-						;; size=12 bbWeight=1 PerfScore 5.50
+       lea      rbp, [rsp+0x10]
+						;; size=9 bbWeight=1 PerfScore 3.50
 G_M63846_IG02:
        mov      rbx, gword ptr [rdi+0x08]
-       mov      r15, gword ptr [rbx+0x28]
-       test     r15, r15
+       mov      rax, gword ptr [rbx+0x28]
+       test     rax, rax
        jne      SHORT G_M63846_IG04
 						;; size=13 bbWeight=1 PerfScore 5.25
 G_M63846_IG03:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.SortedList`2+ValueList[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        lea      rdi, bword ptr [r15+0x08]
        mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
        lea      rdi, bword ptr [rbx+0x28]
        mov      rsi, r15
        call     CORINFO_HELP_ASSIGN_REF
-						;; size=42 bbWeight=0.50 PerfScore 2.50
+       mov      rax, r15
+						;; size=45 bbWeight=0.50 PerfScore 2.62
 G_M63846_IG04:
-       mov      rdi, gword ptr [r15+0x08]
-       cmp      dword ptr [rdi+0x30], 0
-       jne      SHORT G_M63846_IG10
+       mov      rbx, gword ptr [rax+0x08]
+       cmp      dword ptr [rbx+0x30], 0
+       jne      SHORT G_M63846_IG07
 						;; size=10 bbWeight=1 PerfScore 6.00
 G_M63846_IG05:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       G_M63846_IG12
-						;; size=19 bbWeight=0.50 PerfScore 2.12
+       mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.IO.Packaging.PackagePart]():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]
+       mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.__Canon]():System.Collections.Generic.IEnumerator`1[System.__Canon]
+						;; size=20 bbWeight=0.50 PerfScore 0.25
 G_M63846_IG06:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Array+EmptyArray`1[System.IO.Packaging.PackagePart]:Value
-       mov      r15, gword ptr [rdi]
-       mov      ebx, dword ptr [r15+0x08]
-       test     ebx, ebx
-       je       SHORT G_M63846_IG07
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.IO.Packaging.PackagePart]
-       call     CORINFO_HELP_NEWSFAST
-       mov      r14, rax
-       mov      dword ptr [r14+0x08], -1
-       mov      dword ptr [r14+0x0C], ebx
-       lea      rdi, bword ptr [r14+0x10]
-       mov      rsi, r15
-       call     CORINFO_HELP_ASSIGN_REF
-       mov      rax, r14
-       jmp      SHORT G_M63846_IG09
-						;; size=68 bbWeight=0.50 PerfScore 6.50
+       pop      rbx
+       pop      r15
+       pop      rbp
+       tail.jmp [rax]System.Collections.Generic.EnumerableHelpers:GetEmptyEnumerator[System.__Canon]():System.Collections.Generic.IEnumerator`1[System.__Canon]
+						;; size=7 bbWeight=0.50 PerfScore 1.75
 G_M63846_IG07:
-       mov      rdi, 0xD1FFAB1E      ; global ptr
-       test     byte  ptr [rdi], 1
-       je       SHORT G_M63846_IG13
-						;; size=15 bbWeight=0.50 PerfScore 2.12
-G_M63846_IG08:
-       mov      rdi, 0xD1FFAB1E      ; data for System.SZGenericArrayEnumerator`1[System.IO.Packaging.PackagePart]:Empty
-       mov      rax, gword ptr [rdi]
-						;; size=13 bbWeight=0.50 PerfScore 1.12
-G_M63846_IG09:
-       jmp      SHORT G_M63846_IG11
-						;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M63846_IG10:
        mov      rdi, 0xD1FFAB1E      ; System.Collections.Generic.SortedList`2+SortedListValueEnumerator[System.IO.Packaging.PackUriHelper+ValidatedPartUri,System.IO.Packaging.PackagePart]
        call     CORINFO_HELP_NEWSFAST
-       mov      rbx, rax
-       mov      r15, gword ptr [r15+0x08]
-       lea      rdi, bword ptr [rbx+0x08]
-       mov      rsi, r15
+       mov      r15, rax
+       lea      rdi, bword ptr [r15+0x08]
+       mov      rsi, rbx
        call     CORINFO_HELP_ASSIGN_REF
-       mov      eax, dword ptr [r15+0x34]
-       mov      dword ptr [rbx+0x1C], eax
-       mov      rax, rbx
-						;; size=44 bbWeight=0.50 PerfScore 4.25
-G_M63846_IG11:
-       add      rsp, 8
+       mov      eax, dword ptr [rbx+0x34]
+       mov      dword ptr [r15+0x1C], eax
+       mov      rax, r15
+						;; size=40 bbWeight=0.50 PerfScore 3.25
+G_M63846_IG08:
        pop      rbx
-       pop      r14
        pop      r15
        pop      rbp
        ret      
-						;; size=11 bbWeight=1 PerfScore 3.25
-G_M63846_IG12:
-       mov      rdi, 0xD1FFAB1E      ; System.Array+EmptyArray`1[System.IO.Packaging.PackagePart]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      G_M63846_IG06
-						;; size=27 bbWeight=0 PerfScore 0.00
-G_M63846_IG13:
-       mov      rdi, 0xD1FFAB1E      ; System.SZGenericArrayEnumerator`1[System.IO.Packaging.PackagePart]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
-       call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
-       jmp      SHORT G_M63846_IG08
-						;; size=24 bbWeight=0 PerfScore 0.00
+						;; size=5 bbWeight=0.50 PerfScore 1.25
 
-; Total bytes of code 300, prolog size 12, PerfScore 39.62, instruction count 70, allocated bytes for code 300 (MethodHash=a18b0699) for method System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this (FullOpts)
+; Total bytes of code 149, prolog size 9, PerfScore 23.88, instruction count 40, allocated bytes for code 149 (MethodHash=a18b0699) for method System.IO.Packaging.PackagePartCollection:GetEnumerator():System.Collections.Generic.IEnumerator`1[System.IO.Packaging.PackagePart]:this (FullOpts)
 ; ============================================================

-97 (-33.92 % of base) - System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]:this

 ; Assembly listing for method System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]: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; 4 single block inlinees; 4 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T02] (  5,  4.50)     ref  ->  r14         this class-hnd single-def <System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter>
-;  V01 arg1         [V01,T00] (  7,  6   )     int  ->  rbx         single-def
+;  V00 this         [V00,T00] (  6,  5.50)     ref  ->  rbx         this class-hnd single-def <System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter>
+;  V01 arg1         [V01,T02] (  5,  4.50)     int  ->  r14         single-def
 ;  V02 arg2         [V02,T01] (  6,  5   )     int  ->  r15        
-;  V03 loc0         [V03,T03] (  8,  6   )     int  ->  r15        
-;  V04 loc1         [V04,T10] (  3,  1.50)     ref  ->  r14         class-hnd exact single-def <System.Linq.Expressions.Expression[]>
+;  V03 loc0         [V03,T03] (  5,  4   )     int  ->  r15        
+;  V04 loc1         [V04,T05] (  3,  1.50)     ref  ->  r13         class-hnd exact single-def <System.Linq.Expressions.Expression[]>
 ;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V06 tmp1         [V06    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewArr temp" <System.Linq.Expressions.Expression[]>
-;  V07 tmp2         [V07,T06] (  2,  4   )     ref  ->  rsi         class-hnd single-def "Inlining Arg" <System.Linq.Expressions.Expression[]>
-;  V08 tmp3         [V08,T05] (  3,  5   )     int  ->  r14         ld-addr-op "Inlining Arg"
-;* V09 tmp4         [V09    ] (  0,  0   )     int  ->  zero-ref    "Inline return value spill temp"
-;  V10 tmp5         [V10,T07] (  2,  2   )     ref  ->  rsi         single-def "argument with side effect"
-;  V11 tmp6         [V11,T08] (  2,  2   )     ref  ->  rsi         single-def "argument with side effect"
-;  V12 tmp7         [V12,T09] (  2,  2   )     ref  ->  rdx         single-def "argument with side effect"
-;  V13 cse0         [V13,T04] (  7,  5   )     ref  ->  r13         multi-def "CSE #01: aggressive"
+;  V07 cse0         [V07,T04] (  4,  3   )     ref  ->  rbx         "CSE #02: aggressive"
 ;
 ; Lcl frame size = 0
 
 G_M14820_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     rbx
        lea      rbp, [rsp+0x20]
-       mov      r14, rdi
-       mov      ebx, esi
+       mov      rbx, rdi
+       mov      r14d, esi
        mov      r15d, edx
-						;; size=21 bbWeight=1 PerfScore 6.25
+						;; size=22 bbWeight=1 PerfScore 6.25
 G_M14820_IG02:
-       mov      rdi, r14
+       mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:EnsureDone():this
        call     [rax]System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:EnsureDone():this
        test     r15d, r15d
        jge      SHORT G_M14820_IG04
 						;; size=20 bbWeight=1 PerfScore 4.75
 G_M14820_IG03:
-       mov      r13, gword ptr [r14+0x10]
-       add      r15d, dword ptr [r13+0x08]
+       mov      rsi, gword ptr [rbx+0x10]
+       add      r15d, dword ptr [rsi+0x08]
 						;; size=8 bbWeight=0.50 PerfScore 2.50
 G_M14820_IG04:
-       sub      r15d, ebx
+       sub      r15d, r14d
        inc      r15d
-       mov      r13, gword ptr [r14+0x10]
-       mov      rsi, r13
-       test     r15d, r15d
-       jl       G_M14820_IG11
-       test     ebx, ebx
-       jl       G_M14820_IG10
-       mov      r14d, dword ptr [rsi+0x08]
-       sub      r14d, ebx
-       cmp      r14d, r15d
-       jl       SHORT G_M14820_IG09
-       cmp      dword ptr [r13+0x08], r15d
+       mov      rsi, gword ptr [rbx+0x10]
+       mov      ecx, r15d
+       mov      edx, r14d
+       mov      rdi, 0xD1FFAB1E      ; System.Dynamic.Utils.ContractUtils:RequiresArrayRange[System.Linq.Expressions.Expression](System.Collections.Generic.IList`1[System.Linq.Expressions.Expression],int,int,System.String,System.String)
+       mov      r8, 0xD1FFAB1E      ; 'first'
+       mov      r9, 0xD1FFAB1E      ; 'last'
+       mov      rax, 0xD1FFAB1E      ; code for System.Dynamic.Utils.ContractUtils:RequiresArrayRange[System.__Canon](System.Collections.Generic.IList`1[System.__Canon],int,int,System.String,System.String)
+       call     [rax]System.Dynamic.Utils.ContractUtils:RequiresArrayRange[System.__Canon](System.Collections.Generic.IList`1[System.__Canon],int,int,System.String,System.String)
+       mov      rbx, gword ptr [rbx+0x10]
+       cmp      dword ptr [rbx+0x08], r15d
        je       SHORT G_M14820_IG07
-						;; size=48 bbWeight=1 PerfScore 12.75
+						;; size=68 bbWeight=1 PerfScore 13.00
 G_M14820_IG05:
-       mov      esi, r15d
+       movsxd   rsi, r15d
        mov      rdi, 0xD1FFAB1E      ; System.Linq.Expressions.Expression[]
        call     CORINFO_HELP_NEWARR_1_OBJ
-       mov      r14, rax
-       mov      rdi, r13
-       mov      esi, ebx
-       mov      rdx, r14
+       mov      r13, rax
+       mov      rdi, rbx
+       mov      esi, r14d
+       mov      rdx, r13
        mov      r8d, r15d
        xor      ecx, ecx
        mov      rax, 0xD1FFAB1E      ; code for System.Array:Copy(System.Array,int,System.Array,int,int)
        call     [rax]System.Array:Copy(System.Array,int,System.Array,int,int)
-       mov      rax, r14
-						;; size=49 bbWeight=0.50 PerfScore 3.25
+       mov      rax, r13
+						;; size=50 bbWeight=0.50 PerfScore 3.25
 G_M14820_IG06:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=9 bbWeight=0.50 PerfScore 1.75
 G_M14820_IG07:
-       mov      rax, r13
+       mov      rax, rbx
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M14820_IG08:
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=9 bbWeight=0.50 PerfScore 1.75
-G_M14820_IG09:
-       mov      edi, 0x47FD
-       mov      rsi, 0xD1FFAB1E
-       call     CORINFO_HELP_STRCNS
-       mov      rdx, rax
-       mov      esi, r15d
-       mov      edi, r14d
-       mov      rax, 0xD1FFAB1E      ; code for System.ArgumentOutOfRangeException:ThrowLess[int](int,int,System.String)
-       call     [rax]System.ArgumentOutOfRangeException:ThrowLess[int](int,int,System.String)
-       int3     
-						;; size=42 bbWeight=0.50 PerfScore 2.88
-G_M14820_IG10:
-       mov      edi, 0x47FD
-       mov      rsi, 0xD1FFAB1E
-       call     CORINFO_HELP_STRCNS
-       mov      rsi, rax
-       mov      edi, ebx
-       mov      rax, 0xD1FFAB1E      ; code for System.ArgumentOutOfRangeException:ThrowNegative[int](int,System.String)
-       call     [rax]System.ArgumentOutOfRangeException:ThrowNegative[int](int,System.String)
-       int3     
-						;; size=38 bbWeight=0.50 PerfScore 2.75
-G_M14820_IG11:
-       mov      edi, 0x4809
-       mov      rsi, 0xD1FFAB1E
-       call     CORINFO_HELP_STRCNS
-       mov      rsi, rax
-       mov      edi, r15d
-       mov      rax, 0xD1FFAB1E      ; code for System.ArgumentOutOfRangeException:ThrowNegative[int](int,System.String)
-       call     [rax]System.ArgumentOutOfRangeException:ThrowNegative[int](int,System.String)
-       int3     
-						;; size=39 bbWeight=0.50 PerfScore 2.75
 
-; Total bytes of code 286, prolog size 13, PerfScore 41.50, instruction count 80, allocated bytes for code 286 (MethodHash=8d08c61b) for method System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]:this (FullOpts)
+; Total bytes of code 189, prolog size 13, PerfScore 33.38, instruction count 54, allocated bytes for code 189 (MethodHash=8d08c61b) for method System.Linq.Expressions.Compiler.StackSpiller+ChildRewriter:get_Item(int,int):System.Linq.Expressions.Expression[]:this (FullOpts)
 ; ============================================================

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

Larger list of diffs: https://gist.github.com/MihuBot/1e463f8dc5c62a7d2e52c2f0d03ea82c

[MihuBot]

@hez2010