[JitDiff X64] MihaZupan/runtime/diff-test

[MihuBot]

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https://github.com/MihaZupan/runtime/tree/diff-test

Main commit: dotnet/runtime@bb1148d
PR commit: MihaZupan/runtime@cc61aca

Diffs

Diffs

Found 95 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 46282527
Total bytes of diff: 46281936
Total bytes of delta: -591 (-0.00 % of base)
Total relative delta: -3.98
    diff is an improvement.
    relative diff is an improvement.


Top file regressions (bytes):
         320 : System.Numerics.Tensors.dasm (0.03 % of base)

Top file improvements (bytes):
        -763 : System.Private.CoreLib.dasm (-0.01 % of base)
         -40 : System.Text.RegularExpressions.dasm (-0.00 % of base)
         -34 : System.Memory.dasm (-0.01 % of base)
         -28 : System.Security.Cryptography.dasm (-0.00 % of base)
         -24 : System.Net.Primitives.dasm (-0.02 % of base)
         -16 : System.Net.ServerSentEvents.dasm (-0.02 % of base)
          -6 : System.Text.Json.dasm (-0.00 % of base)

8 total files with Code Size differences (7 improved, 1 regressed), 252 unchanged.

Top method regressions (bytes):
          46 (2.60 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](System.Numerics.Tensors.Tensor`1[System.__Canon],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.__Canon] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](System.Numerics.Tensors.Tensor`1[byte],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[byte] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](System.Numerics.Tensors.Tensor`1[double],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[double] (FullOpts)
          26 (1.73 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](System.Numerics.Tensors.Tensor`1[int],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[int] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](System.Numerics.Tensors.Tensor`1[long],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[long] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](System.Numerics.Tensors.Tensor`1[short],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[short] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](System.Numerics.Tensors.Tensor`1[System.Nullable`1[int]],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.Nullable`1[int]] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](System.Numerics.Tensors.Tensor`1[System.Numerics.Vector`1[float]],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.Numerics.Vector`1[float]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[byte] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[byte] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[double] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[double] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[int] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[int] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[long] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[long] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[short] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[short] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]] (FullOpts)
           4 (0.22 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon] (FullOpts)
           4 (0.22 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.__Canon] (FullOpts)
           2 (0.67 % of base) : System.Private.CoreLib.dasm - System.Buffers.SearchValues:TryGetSingleRange[byte](System.ReadOnlySpan`1[byte],byref,byref):bool (FullOpts)
           2 (0.08 % of base) : System.Private.CoreLib.dasm - System.IO.Enumeration.FileSystemName:MatchPattern(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char],bool,bool):bool (FullOpts)
           2 (10.00 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[int](int,System.ReadOnlySpan`1[int]):bool (FullOpts)
           2 (9.09 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[long](long,System.ReadOnlySpan`1[long]):bool (FullOpts)

Top method improvements (bytes):
         -79 (-28.42 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int (FullOpts)
         -77 (-16.92 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
         -77 (-19.85 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
         -76 (-12.97 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.ReadOnlyMemory`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlyMemory`1[short] (FullOpts)
         -76 (-13.26 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.Memory`1[short],System.ReadOnlySpan`1[short]):System.Memory`1[short] (FullOpts)
         -76 (-12.86 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.ReadOnlyMemory`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlyMemory`1[short] (FullOpts)
         -74 (-13.07 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.Memory`1[short],System.ReadOnlySpan`1[short]):System.Memory`1[short] (FullOpts)
         -64 (-20.25 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
         -64 (-20.25 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
         -40 (-10.13 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexInterpreter:MatchRef(int,int,System.ReadOnlySpan`1[char],bool):bool:this (FullOpts)
         -36 (-67.92 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool (FullOpts)
         -34 (-27.42 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int (FullOpts)
         -33 (-14.60 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:AdvancePastAny(System.ReadOnlySpan`1[short]):long:this (FullOpts)
         -32 (-57.14 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool (FullOpts)
          -7 (-35.00 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[long](System.Span`1[long],long):bool (FullOpts)
          -6 (-31.58 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[int](System.Span`1[int],int):bool (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[byte](System.ReadOnlySpan`1[byte],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[int](System.ReadOnlySpan`1[int],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[long](System.ReadOnlySpan`1[long],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[short](System.ReadOnlySpan`1[short],bool):System.Net.IPAddress (FullOpts)
          -5 (-23.81 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[byte](System.Span`1[byte],byte):bool (FullOpts)
          -4 (-1.02 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeZeroMultiSegment(byref,byref,byref):byte:this (FullOpts)
          -2 (-0.40 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.Memory`1[byte],System.ReadOnlySpan`1[byte]):System.Memory`1[byte] (FullOpts)
          -2 (-0.38 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.ReadOnlyMemory`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlyMemory`1[byte] (FullOpts)
          -2 (-0.53 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.ReadOnlySpan`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlySpan`1[byte] (FullOpts)
          -2 (-0.65 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.Span`1[byte],System.ReadOnlySpan`1[byte]):System.Span`1[byte] (FullOpts)
          -2 (-0.40 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.Memory`1[byte],System.ReadOnlySpan`1[byte]):System.Memory`1[byte] (FullOpts)
          -2 (-0.39 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.ReadOnlyMemory`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlyMemory`1[byte] (FullOpts)
          -2 (-0.80 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.ReadOnlySpan`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlySpan`1[byte] (FullOpts)
          -2 (-0.80 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.Span`1[byte],System.ReadOnlySpan`1[byte]):System.Span`1[byte] (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[byte]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[double]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[int]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[long]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[short]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.11 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.__Canon]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.Nullable`1[int]]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.10 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.Numerics.Vector`1[float]]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.80 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeZero(byref,byref):byte:this (FullOpts)
          -1 (-0.52 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[byte]:AdvancePastAny(System.ReadOnlySpan`1[byte]):long:this (FullOpts)

Top method regressions (percentages):
           2 (10.00 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[int](int,System.ReadOnlySpan`1[int]):bool (FullOpts)
           2 (9.09 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[long](long,System.ReadOnlySpan`1[long]):bool (FullOpts)
          46 (2.60 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](System.Numerics.Tensors.Tensor`1[System.__Canon],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.__Canon] (FullOpts)
          26 (1.73 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](System.Numerics.Tensors.Tensor`1[int],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[int] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](System.Numerics.Tensors.Tensor`1[byte],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[byte] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](System.Numerics.Tensors.Tensor`1[double],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[double] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](System.Numerics.Tensors.Tensor`1[long],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[long] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](System.Numerics.Tensors.Tensor`1[short],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[short] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](System.Numerics.Tensors.Tensor`1[System.Nullable`1[int]],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.Nullable`1[int]] (FullOpts)
          26 (1.67 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](System.Numerics.Tensors.Tensor`1[System.Numerics.Vector`1[float]],System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.Tensor`1[System.Numerics.Vector`1[float]] (FullOpts)
           2 (0.67 % of base) : System.Private.CoreLib.dasm - System.Buffers.SearchValues:TryGetSingleRange[byte](System.ReadOnlySpan`1[byte],byref,byref):bool (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[byte] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[byte](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[byte] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[double] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[double](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[double] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[int] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[int](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[int] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[long] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[long](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[long] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[short] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[short](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[short] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Nullable`1[int]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]] (FullOpts)
           6 (0.38 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.Numerics.Vector`1[float]](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]] (FullOpts)
           4 (0.22 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon] (FullOpts)
           4 (0.22 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.Tensor:Reshape[System.__Canon](byref,System.ReadOnlySpan`1[nint]):System.Numerics.Tensors.TensorSpan`1[System.__Canon] (FullOpts)
           2 (0.08 % of base) : System.Private.CoreLib.dasm - System.IO.Enumeration.FileSystemName:MatchPattern(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char],bool,bool):bool (FullOpts)

Top method improvements (percentages):
         -36 (-67.92 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool (FullOpts)
         -32 (-57.14 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool (FullOpts)
          -7 (-35.00 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[long](System.Span`1[long],long):bool (FullOpts)
          -6 (-31.58 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[int](System.Span`1[int],int):bool (FullOpts)
         -79 (-28.42 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int (FullOpts)
         -34 (-27.42 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int (FullOpts)
          -5 (-23.81 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Contains[byte](System.Span`1[byte],byte):bool (FullOpts)
         -64 (-20.25 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
         -64 (-20.25 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
         -77 (-19.85 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
         -77 (-16.92 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
         -33 (-14.60 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:AdvancePastAny(System.ReadOnlySpan`1[short]):long:this (FullOpts)
         -76 (-13.26 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.Memory`1[short],System.ReadOnlySpan`1[short]):System.Memory`1[short] (FullOpts)
         -74 (-13.07 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.Memory`1[short],System.ReadOnlySpan`1[short]):System.Memory`1[short] (FullOpts)
         -76 (-12.97 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[short](System.ReadOnlyMemory`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlyMemory`1[short] (FullOpts)
         -76 (-12.86 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[short](System.ReadOnlyMemory`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlyMemory`1[short] (FullOpts)
         -40 (-10.13 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexInterpreter:MatchRef(int,int,System.ReadOnlySpan`1[char],bool):bool:this (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[byte](System.ReadOnlySpan`1[byte],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[int](System.ReadOnlySpan`1[int],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[long](System.ReadOnlySpan`1[long],bool):System.Net.IPAddress (FullOpts)
          -6 (-1.22 % of base) : System.Net.Primitives.dasm - System.Net.IPAddressParser:Parse[short](System.ReadOnlySpan`1[short],bool):System.Net.IPAddress (FullOpts)
          -4 (-1.02 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeZeroMultiSegment(byref,byref,byref):byte:this (FullOpts)
          -2 (-0.80 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.ReadOnlySpan`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlySpan`1[byte] (FullOpts)
          -2 (-0.80 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.Span`1[byte],System.ReadOnlySpan`1[byte]):System.Span`1[byte] (FullOpts)
          -2 (-0.80 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeZero(byref,byref):byte:this (FullOpts)
          -2 (-0.65 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.Span`1[byte],System.ReadOnlySpan`1[byte]):System.Span`1[byte] (FullOpts)
          -2 (-0.53 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.ReadOnlySpan`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlySpan`1[byte] (FullOpts)
          -1 (-0.52 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[byte]:AdvancePastAny(System.ReadOnlySpan`1[byte]):long:this (FullOpts)
          -2 (-0.40 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.Memory`1[byte],System.ReadOnlySpan`1[byte]):System.Memory`1[byte] (FullOpts)
          -2 (-0.40 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.Memory`1[byte],System.ReadOnlySpan`1[byte]):System.Memory`1[byte] (FullOpts)
          -2 (-0.39 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:TrimEnd[byte](System.ReadOnlyMemory`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlyMemory`1[byte] (FullOpts)
          -2 (-0.38 % of base) : System.Private.CoreLib.dasm - System.MemoryExtensions:Trim[byte](System.ReadOnlyMemory`1[byte],System.ReadOnlySpan`1[byte]):System.ReadOnlyMemory`1[byte] (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[double]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[byte]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[int]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[short]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[long]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.12 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.Nullable`1[int]]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.11 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.__Canon]:ProcessLine(byref,byref):bool:this (FullOpts)
          -2 (-0.10 % of base) : System.Net.ServerSentEvents.dasm - System.Net.ServerSentEvents.SseParser`1[System.Numerics.Vector`1[float]]:ProcessLine(byref,byref):bool:this (FullOpts)

68 total methods with Code Size differences (40 improved, 28 regressed), 287203 unchanged.

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

Artifacts:

• diff-frameworks.txt (26 KB)
• ShortDiffsRegressions.md (107 B)
• LongDiffsRegressions.md (824 KB)
• ShortDiffsImprovements.md (59 KB)
• LongDiffsImprovements.md (338 KB)
• jit-diffs-main.zip (158 MB)
• jit-diffs-pr.zip (158 MB)

[MihuBot]

Top method regressions

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

Larger list of diffs: https://gist.github.com/MihuBot/999f6355dd6a1f39f6196e94f9a2ff2d

[MihuBot]

Top method improvements

-79 (-28.42 % of base) - System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int

 ; Assembly listing for method System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int (FullOpts)
 ; Emitting BLENDED_CODE for x64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 5 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[short]>
-;  V01 arg1         [V01,T02] (  7,  8.50)     int  ->  rbx         single-def
+;  V01 arg1         [V01,T01] (  7,  8.50)     int  ->  rbx         single-def
 ;* V02 arg2         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-arg single-def <System.ReadOnlySpan`1[short]>
-;  V03 loc0         [V03,T01] ( 14, 20.04)     int  ->  [rbp-0x2C] 
+;  V03 loc0         [V03,T00] ( 14, 20.04)     int  ->  [rbp-0x2C] 
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V05 tmp1         [V05    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V07 tmp3         [V07,T00] (  8, 24   )   short  ->  rsi         "Inlining Arg"
-;* V08 tmp4         [V08    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V09 tmp5         [V09,T03] (  6,  8   )   ubyte  ->  rax         "Inline return value spill temp"
-;* V10 tmp6         [V10    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V11 tmp7         [V11    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V12 tmp8         [V12    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V13 tmp9         [V13,T06] (  3,  5   )   byref  ->  r13         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
-;  V14 tmp10        [V14,T07] (  4,  2.54)     int  ->  r12         single-def "field V00._length (fldOffset=0x8)" P-INDEP
-;  V15 tmp11        [V15,T04] (  5,  5   )   byref  ->  r15         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
-;  V16 tmp12        [V16,T05] (  5,  5   )     int  ->  r14         single-def "field V02._length (fldOffset=0x8)" P-INDEP
-;* V17 tmp13        [V17    ] (  0,  0   )   byref  ->  zero-ref    "field V06._reference (fldOffset=0x0)" P-INDEP
-;* V18 tmp14        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-INDEP
-;* V19 tmp15        [V19    ] (  0,  0   )   byref  ->  zero-ref    "field V08._reference (fldOffset=0x0)" P-INDEP
-;* V20 tmp16        [V20    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
-;* V21 tmp17        [V21    ] (  0,  0   )   byref  ->  zero-ref    "field V12._reference (fldOffset=0x0)" P-INDEP
-;* V22 tmp18        [V22    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;  V05 tmp1         [V05,T02] (  3,  5   )   byref  ->  r15         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
+;  V06 tmp2         [V06,T05] (  4,  2.54)     int  ->  r12         single-def "field V00._length (fldOffset=0x8)" P-INDEP
+;  V07 tmp3         [V07,T03] (  3,  5   )   byref  ->  r14         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
+;  V08 tmp4         [V08,T04] (  3,  5   )     int  ->  r13         single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 8
 
 G_M10579_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
-       mov      r13, rdi
+       mov      r15, rdi
        mov      r12d, esi
        mov      ebx, edx
-       mov      r15, rcx
-       mov      r14d, r8d
+       mov      r14, rcx
+       mov      r13d, r8d
 						;; size=30 bbWeight=1 PerfScore 8.75
 G_M10579_IG02:
        lea      eax, [r12-0x01]
        cmp      eax, ebx
        jge      SHORT G_M10579_IG07
 						;; size=9 bbWeight=1 PerfScore 1.75
 G_M10579_IG03:
        mov      r12d, eax
        jmp      SHORT G_M10579_IG05
 						;; size=5 bbWeight=0.50 PerfScore 1.12
 G_M10579_IG04:
        mov      r12d, dword ptr [rbp-0x2C]
 						;; size=4 bbWeight=1.98 PerfScore 1.98
 G_M10579_IG05:
        mov      eax, r12d
        sub      eax, ebx
        inc      eax
 						;; size=7 bbWeight=1 PerfScore 0.75
 G_M10579_IG06:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
 G_M10579_IG07:
-       mov      edi, eax
-       or       edi, ebx
-       jl       SHORT G_M10579_IG08
+       mov      edx, eax
+       or       edx, ebx
+       jl       SHORT G_M10579_IG10
        cmp      eax, r12d
-       jl       G_M10579_IG17
-						;; size=15 bbWeight=0.50 PerfScore 1.38
+       jge      SHORT G_M10579_IG10
+						;; size=11 bbWeight=0.50 PerfScore 1.38
 G_M10579_IG08:
-       cmp      eax, r12d
-       jae      G_M10579_IG19
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [r13+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M10579_IG10
-						;; size=33 bbWeight=0.04 PerfScore 0.25
-G_M10579_IG09:
-       mov      rdi, r15
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M10579_IG11
-						;; size=20 bbWeight=0.02 PerfScore 0.12
-G_M10579_IG10:
-       mov      rdi, r15
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=0.02 PerfScore 0.08
-G_M10579_IG11:
+       mov      edx, eax
+       movsx    rdx, word  ptr [r15+2*rdx]
+       mov      rdi, r14
+       mov      esi, r13d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
        test     eax, eax
-       je       SHORT G_M10579_IG13
-       mov      eax, dword ptr [rbp-0x2C]
-       dec      eax
-       cmp      eax, ebx
-       jge      SHORT G_M10579_IG08
-						;; size=13 bbWeight=0.04 PerfScore 0.15
-G_M10579_IG12:
-       mov      r12d, eax
-       jmp      SHORT G_M10579_IG05
-						;; size=5 bbWeight=0.02 PerfScore 0.05
-G_M10579_IG13:
-       mov      r12d, dword ptr [rbp-0x2C]
-       jmp      G_M10579_IG05
-						;; size=9 bbWeight=0.02 PerfScore 0.06
-G_M10579_IG14:
-       mov      rdi, r15
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=1.98 PerfScore 7.42
-G_M10579_IG15:
-       test     eax, eax
-       je       G_M10579_IG04
+       je       SHORT G_M10579_IG04
        mov      r12d, dword ptr [rbp-0x2C]
        dec      r12d
        cmp      r12d, ebx
-       jl       G_M10579_IG05
-						;; size=24 bbWeight=3.96 PerfScore 14.85
-G_M10579_IG16:
+       jl       SHORT G_M10579_IG05
+						;; size=44 bbWeight=3.96 PerfScore 42.57
+G_M10579_IG09:
        mov      eax, r12d
-						;; size=3 bbWeight=1.98 PerfScore 0.49
-G_M10579_IG17:
+       jmp      SHORT G_M10579_IG08
+						;; size=5 bbWeight=1.98 PerfScore 4.46
+G_M10579_IG10:
+       cmp      eax, r12d
+       jae      SHORT G_M10579_IG13
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [r13+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M10579_IG14
-						;; size=24 bbWeight=3.96 PerfScore 19.80
-G_M10579_IG18:
-       mov      rdi, r15
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M10579_IG15
-						;; size=20 bbWeight=1.98 PerfScore 11.38
-G_M10579_IG19:
+       mov      edx, eax
+       movsx    rdx, word  ptr [r15+2*rdx]
+       mov      rdi, r14
+       mov      esi, r13d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       test     eax, eax
+       je       SHORT G_M10579_IG12
+       mov      eax, dword ptr [rbp-0x2C]
+       dec      eax
+       cmp      eax, ebx
+       jge      SHORT G_M10579_IG10
+						;; size=46 bbWeight=0.04 PerfScore 0.48
+G_M10579_IG11:
+       mov      r12d, eax
+       jmp      G_M10579_IG05
+						;; size=8 bbWeight=0.02 PerfScore 0.05
+G_M10579_IG12:
+       mov      r12d, dword ptr [rbp-0x2C]
+       jmp      G_M10579_IG05
+						;; size=9 bbWeight=0.02 PerfScore 0.06
+G_M10579_IG13:
        call     CORINFO_HELP_RNGCHKFAIL
        int3     
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 278, prolog size 16, PerfScore 74.63, instruction count 88, allocated bytes for code 278 (MethodHash=e4cfd6ac) for method System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int (FullOpts)
+; Total bytes of code 199, prolog size 16, PerfScore 67.59, instruction count 71, allocated bytes for code 199 (MethodHash=e4cfd6ac) for method System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,System.ReadOnlySpan`1[short]):int (FullOpts)
 ; ============================================================

-77 (-16.92 % of base) - System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short]

 ; Assembly listing for method System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
 ; Emitting BLENDED_CODE for x64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 8 single block inlinees; 5 inlinees without PGO data
+; 0 inlinees with PGO data; 3 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    multireg-arg multireg-ret ld-addr-op single-def <System.ReadOnlySpan`1[short]>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[short]>
-;  V02 loc0         [V02,T05] (  8,  7   )     int  ->  r12        
-;  V03 loc1         [V03,T11] (  3,  1.50)     int  ->  rdx        
+;  V02 loc0         [V02,T03] (  8,  7   )     int  ->  r12        
+;  V03 loc1         [V03,T09] (  3,  1.50)     int  ->  rdx        
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V05 tmp1         [V05    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.ReadOnlySpan`1[short]>
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.ReadOnlySpan`1[short]>
 ;* V07 tmp3         [V07    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V08 tmp4         [V08,T01] ( 14, 18.54)     int  ->  [rbp-0x2C]  "Inline stloc first use temp"
-;* V09 tmp5         [V09    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V10 tmp6         [V10    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V11 tmp7         [V11    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V12 tmp8         [V12,T00] (  8, 24   )   short  ->  rsi         "Inlining Arg"
-;* V13 tmp9         [V13    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V14 tmp10        [V14,T03] (  6,  8   )   ubyte  ->  rax         "Inline return value spill temp"
-;* V15 tmp11        [V15    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V16 tmp12        [V16    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V17 tmp13        [V17    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V18 tmp14        [V18    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
-;* V19 tmp15        [V19    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V20 tmp16        [V20    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V21 tmp17        [V21,T10] (  3,  3   )   short  ->  r13         "Inlining Arg"
-;  V22 tmp18        [V22,T12] (  3,  1.50)     int  ->  r14         "Inline stloc first use temp"
-;  V23 tmp19        [V23,T13] (  3,  1.50)     int  ->  [rbp-0x30]  spill-single-def "Inline stloc first use temp"
-;* V24 tmp20        [V24    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
-;* V25 tmp21        [V25    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;  V26 tmp22        [V26,T02] (  9,  8   )   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
-;  V27 tmp23        [V27,T04] ( 10,  5.04)     int  ->  r15         single-def "field V00._length (fldOffset=0x8)" P-INDEP
-;  V28 tmp24        [V28,T09] (  4,  2.50)   byref  ->  r13         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
-;  V29 tmp25        [V29,T06] (  5,  3.50)     int  ->  r14         single-def "field V01._length (fldOffset=0x8)" P-INDEP
-;* V30 tmp26        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V05._reference (fldOffset=0x0)" P-DEP
-;* V31 tmp27        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-DEP
-;* V32 tmp28        [V32    ] (  0,  0   )   byref  ->  zero-ref    "field V06._reference (fldOffset=0x0)" P-DEP
-;* V33 tmp29        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-DEP
-;* V34 tmp30        [V34,T18] (  0,  0   )   byref  ->  zero-ref    single-def "field V07._reference (fldOffset=0x0)" P-INDEP
-;  V35 tmp31        [V35,T17] (  2,  1   )     int  ->  rax         "field V07._length (fldOffset=0x8)" P-INDEP
-;  V36 tmp32        [V36,T07] (  5,  4.50)   byref  ->  r13         single-def "field V09._reference (fldOffset=0x0)" P-INDEP
-;  V37 tmp33        [V37,T08] (  5,  4.50)     int  ->  r14         "field V09._length (fldOffset=0x8)" P-INDEP
-;* V38 tmp34        [V38    ] (  0,  0   )   byref  ->  zero-ref    "field V11._reference (fldOffset=0x0)" P-INDEP
-;* V39 tmp35        [V39    ] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
-;* V40 tmp36        [V40    ] (  0,  0   )   byref  ->  zero-ref    "field V13._reference (fldOffset=0x0)" P-INDEP
-;* V41 tmp37        [V41    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V42 tmp38        [V42    ] (  0,  0   )   byref  ->  zero-ref    "field V17._reference (fldOffset=0x0)" P-INDEP
-;* V43 tmp39        [V43    ] (  0,  0   )     int  ->  zero-ref    "field V17._length (fldOffset=0x8)" P-INDEP
-;  V44 tmp40        [V44,T15] (  2,  1   )   byref  ->  rax         single-def "field V18._reference (fldOffset=0x0)" P-INDEP
-;* V45 tmp41        [V45    ] (  0,  0   )     int  ->  zero-ref    "field V18._length (fldOffset=0x8)" P-INDEP
-;* V46 tmp42        [V46    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V20._reference (fldOffset=0x0)" P-INDEP
-;* V47 tmp43        [V47    ] (  0,  0   )     int  ->  zero-ref    "field V20._length (fldOffset=0x8)" P-INDEP
-;  V48 tmp44        [V48,T16] (  2,  1   )   byref  ->  rdi         single-def "field V24._reference (fldOffset=0x0)" P-INDEP
-;* V49 tmp45        [V49    ] (  0,  0   )     int  ->  zero-ref    "field V24._length (fldOffset=0x8)" P-INDEP
-;  V50 cse0         [V50,T14] (  3,  1.50)    long  ->  rdx         "CSE #03: moderate"
+;  V08 tmp4         [V08,T00] ( 14, 18.54)     int  ->  [rbp-0x2C]  "Inline stloc first use temp"
+;* V09 tmp5         [V09    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.ReadOnlySpan`1[short]>
+;* V10 tmp6         [V10    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
+;* V11 tmp7         [V11    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
+;* V12 tmp8         [V12    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
+;  V13 tmp9         [V13,T08] (  3,  3   )   short  ->  r13         "Inlining Arg"
+;  V14 tmp10        [V14,T10] (  3,  1.50)     int  ->  r14         "Inline stloc first use temp"
+;  V15 tmp11        [V15,T11] (  3,  1.50)     int  ->  [rbp-0x30]  spill-single-def "Inline stloc first use temp"
+;* V16 tmp12        [V16    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
+;* V17 tmp13        [V17    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
+;  V18 tmp14        [V18,T01] (  9,  8   )   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
+;  V19 tmp15        [V19,T02] ( 10,  5.04)     int  ->  r15         single-def "field V00._length (fldOffset=0x8)" P-INDEP
+;  V20 tmp16        [V20,T05] (  4,  2.50)   byref  ->  r13         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
+;  V21 tmp17        [V21,T04] (  5,  3.50)     int  ->  r14         single-def "field V01._length (fldOffset=0x8)" P-INDEP
+;* V22 tmp18        [V22    ] (  0,  0   )   byref  ->  zero-ref    "field V05._reference (fldOffset=0x0)" P-DEP
+;* V23 tmp19        [V23    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-DEP
+;* V24 tmp20        [V24    ] (  0,  0   )   byref  ->  zero-ref    "field V06._reference (fldOffset=0x0)" P-DEP
+;* V25 tmp21        [V25    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-DEP
+;* V26 tmp22        [V26,T16] (  0,  0   )   byref  ->  zero-ref    single-def "field V07._reference (fldOffset=0x0)" P-INDEP
+;  V27 tmp23        [V27,T15] (  2,  1   )     int  ->  rax         "field V07._length (fldOffset=0x8)" P-INDEP
+;  V28 tmp24        [V28,T06] (  3,  4.50)   byref  ->  r13         single-def "field V09._reference (fldOffset=0x0)" P-INDEP
+;  V29 tmp25        [V29,T07] (  3,  4.50)     int  ->  r14         "field V09._length (fldOffset=0x8)" P-INDEP
+;  V30 tmp26        [V30,T13] (  2,  1   )   byref  ->  rax         single-def "field V10._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp27        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp28        [V32    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V12._reference (fldOffset=0x0)" P-INDEP
+;* V33 tmp29        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;  V34 tmp30        [V34,T14] (  2,  1   )   byref  ->  rdi         single-def "field V16._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp31        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V16._length (fldOffset=0x8)" P-INDEP
+;  V36 cse0         [V36,T12] (  3,  1.50)    long  ->  rdx         "CSE #03: moderate"
 ;
 ; Lcl frame size = 8
 
 G_M9381_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      rbx, rdi
        mov      r15d, esi
        mov      r13, rdx
        mov      r14d, ecx
 						;; size=28 bbWeight=1 PerfScore 8.50
 G_M9381_IG02:
        cmp      r14d, 1
        jg       G_M9381_IG07
 						;; size=10 bbWeight=1 PerfScore 1.25
 G_M9381_IG03:
        cmp      r14d, 1
        je       SHORT G_M9381_IG05
        mov      rax, rbx
        mov      rdx, r15
 						;; size=12 bbWeight=0.50 PerfScore 0.88
 G_M9381_IG04:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M9381_IG05:
        movsx    r13, word  ptr [r13]
        mov      rdi, rbx
        mov      esi, r15d
        mov      edx, r13d
        mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],short):int
        call     [rax]System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],short):int
        mov      r14d, eax
        mov      rdi, rbx
        mov      esi, r15d
        mov      edx, r14d
        mov      ecx, r13d
        mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,short):int
        call     [rax]System.MemoryExtensions:ClampEnd[short](System.ReadOnlySpan`1[short],int,short):int
        mov      dword ptr [rbp-0x30], eax
        mov      edx, r14d
        mov      edi, eax
        add      rdi, rdx
        mov      esi, r15d
        cmp      rdi, rsi
-       ja       G_M9381_IG20
+       ja       G_M9381_IG15
        lea      rdi, bword ptr [rbx+2*rdx]
        mov      rax, rdi
        mov      edx, dword ptr [rbp-0x30]
 						;; size=86 bbWeight=0.50 PerfScore 7.75
 G_M9381_IG06:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M9381_IG07:
        mov      rdi, rbx
        mov      esi, r15d
        mov      rdx, r13
        mov      ecx, r14d
        mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int
        call     [rax]System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int
        mov      r12d, eax
        mov      eax, r15d
        dec      eax
        cmp      eax, r12d
-       jl       SHORT G_M9381_IG12
-       mov      edi, eax
-       or       edi, r12d
-       jl       G_M9381_IG17
+       jl       SHORT G_M9381_IG09
+       mov      edx, eax
+       or       edx, r12d
+       jl       SHORT G_M9381_IG13
        cmp      eax, r15d
-       jge      G_M9381_IG17
-						;; size=57 bbWeight=0.50 PerfScore 4.50
+       jge      SHORT G_M9381_IG13
+						;; size=49 bbWeight=0.50 PerfScore 4.50
 G_M9381_IG08:
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [rbx+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M9381_IG10
-						;; size=23 bbWeight=3.96 PerfScore 19.80
-G_M9381_IG09:
+       mov      edx, eax
+       movsx    rdx, word  ptr [rbx+2*rdx]
        mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M9381_IG11
-						;; size=20 bbWeight=1.98 PerfScore 11.38
-G_M9381_IG10:
-       mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=1.98 PerfScore 7.42
-G_M9381_IG11:
+       mov      esi, r14d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
        test     eax, eax
-       je       SHORT G_M9381_IG14
+       je       SHORT G_M9381_IG11
        mov      eax, dword ptr [rbp-0x2C]
        dec      eax
        cmp      eax, r12d
        jge      SHORT G_M9381_IG08
-						;; size=14 bbWeight=3.96 PerfScore 14.85
-G_M9381_IG12:
+						;; size=42 bbWeight=3.96 PerfScore 42.57
+G_M9381_IG09:
        mov      edx, eax
        sub      edx, r12d
        inc      edx
        mov      eax, r12d
        mov      ecx, edx
        add      rax, rcx
        mov      ecx, r15d
        cmp      rax, rcx
-       ja       SHORT G_M9381_IG20
+       ja       SHORT G_M9381_IG15
        mov      eax, r12d
        lea      rax, bword ptr [rbx+2*rax]
 						;; size=30 bbWeight=0.50 PerfScore 1.88
-G_M9381_IG13:
+G_M9381_IG10:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
-G_M9381_IG14:
+G_M9381_IG11:
        mov      eax, dword ptr [rbp-0x2C]
-       jmp      SHORT G_M9381_IG12
+       jmp      SHORT G_M9381_IG09
 						;; size=5 bbWeight=1.98 PerfScore 5.94
-G_M9381_IG15:
-       mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=0.02 PerfScore 0.08
-G_M9381_IG16:
-       test     eax, eax
-       je       SHORT G_M9381_IG19
+G_M9381_IG12:
        mov      eax, dword ptr [rbp-0x2C]
        dec      eax
        cmp      eax, r12d
-       jl       SHORT G_M9381_IG12
-						;; size=14 bbWeight=0.04 PerfScore 0.15
-G_M9381_IG17:
+       jl       SHORT G_M9381_IG09
+						;; size=10 bbWeight=0.04 PerfScore 0.10
+G_M9381_IG13:
        cmp      eax, r15d
-       jae      SHORT G_M9381_IG21
+       jae      SHORT G_M9381_IG16
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [rbx+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M9381_IG15
-						;; size=28 bbWeight=0.04 PerfScore 0.25
-G_M9381_IG18:
+       mov      edx, eax
+       movsx    rdx, word  ptr [rbx+2*rdx]
        mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M9381_IG16
-						;; size=20 bbWeight=0.02 PerfScore 0.12
-G_M9381_IG19:
+       mov      esi, r14d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       test     eax, eax
+       jne      SHORT G_M9381_IG12
+						;; size=37 bbWeight=0.04 PerfScore 0.38
+G_M9381_IG14:
        mov      eax, dword ptr [rbp-0x2C]
-       jmp      G_M9381_IG12
-						;; size=8 bbWeight=0.02 PerfScore 0.06
-G_M9381_IG20:
+       jmp      SHORT G_M9381_IG09
+						;; size=5 bbWeight=0.02 PerfScore 0.06
+G_M9381_IG15:
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
        call     [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
        int3     
 						;; size=13 bbWeight=0 PerfScore 0.00
-G_M9381_IG21:
+G_M9381_IG16:
        call     CORINFO_HELP_RNGCHKFAIL
        int3     
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 455, prolog size 16, PerfScore 91.18, instruction count 147, allocated bytes for code 455 (MethodHash=5f51db5a) for method System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
+; Total bytes of code 378, prolog size 16, PerfScore 80.18, instruction count 129, allocated bytes for code 378 (MethodHash=5f51db5a) for method System.MemoryExtensions:Trim[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):System.ReadOnlySpan`1[short] (FullOpts)
 ; ============================================================

-77 (-19.85 % of base) - System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short]

 ; Assembly listing for method System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
 ; Emitting BLENDED_CODE for x64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 10 single block inlinees; 4 inlinees without PGO data
+; 0 inlinees with PGO data; 5 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    multireg-arg multireg-ret ld-addr-op single-def <System.Span`1[short]>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[short]>
-;  V02 loc0         [V02,T04] (  8,  7   )     int  ->  r12        
-;  V03 loc1         [V03,T10] (  3,  1.50)     int  ->  rdx        
+;  V02 loc0         [V02,T02] (  8,  7   )     int  ->  r12        
+;  V03 loc1         [V03,T08] (  3,  1.50)     int  ->  rdx        
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V05 tmp1         [V05    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Span`1[short]>
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[short]>
 ;* V07 tmp3         [V07    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[short]>
 ;* V08 tmp4         [V08    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SBRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Span`1[short]>
 ;* V09 tmp5         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[short]>
 ;* V10 tmp6         [V10    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
 ;* V11 tmp7         [V11    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
 ;* V12 tmp8         [V12    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
 ;* V13 tmp9         [V13    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[short]>
 ;* V14 tmp10        [V14    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
 ;* V15 tmp11        [V15    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
 ;* V16 tmp12        [V16    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
 ;* V17 tmp13        [V17    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V18 tmp14        [V18,T01] ( 14, 18.54)     int  ->  [rbp-0x2C]  "Inline stloc first use temp"
-;* V19 tmp15        [V19    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V20 tmp16        [V20    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V21 tmp17        [V21    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V22 tmp18        [V22,T00] (  8, 24   )   short  ->  rsi         "Inlining Arg"
-;* V23 tmp19        [V23    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V24 tmp20        [V24,T03] (  6,  8   )   ubyte  ->  rax         "Inline return value spill temp"
-;* V25 tmp21        [V25    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V26 tmp22        [V26    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V27 tmp23        [V27    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V28 tmp24        [V28    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.Span`1[short]>
-;* V29 tmp25        [V29    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;  V30 tmp26        [V30,T02] (  7,  7   )   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
-;  V31 tmp27        [V31,T05] (  8,  4.04)     int  ->  r15         single-def "field V00._length (fldOffset=0x8)" P-INDEP
-;  V32 tmp28        [V32,T09] (  4,  2.50)   byref  ->  r13         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
-;  V33 tmp29        [V33,T06] (  5,  3.50)     int  ->  r14         single-def "field V01._length (fldOffset=0x8)" P-INDEP
-;* V34 tmp30        [V34    ] (  0,  0   )   byref  ->  zero-ref    "field V05._reference (fldOffset=0x0)" P-DEP
-;* V35 tmp31        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-DEP
-;* V36 tmp32        [V36    ] (  0,  0   )   byref  ->  zero-ref    "field V06._reference (fldOffset=0x0)" P-INDEP
-;* V37 tmp33        [V37    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-INDEP
-;* V38 tmp34        [V38    ] (  0,  0   )   byref  ->  zero-ref    "field V07._reference (fldOffset=0x0)" P-INDEP
-;* V39 tmp35        [V39    ] (  0,  0   )     int  ->  zero-ref    "field V07._length (fldOffset=0x8)" P-INDEP
-;* V40 tmp36        [V40    ] (  0,  0   )   byref  ->  zero-ref    "field V08._reference (fldOffset=0x0)" P-DEP
-;* V41 tmp37        [V41    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-DEP
-;* V42 tmp38        [V42    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
-;* V43 tmp39        [V43    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
-;* V44 tmp40        [V44    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
-;* V45 tmp41        [V45    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
-;* V46 tmp42        [V46    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V13._reference (fldOffset=0x0)" P-INDEP
-;* V47 tmp43        [V47    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V48 tmp44        [V48    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V14._reference (fldOffset=0x0)" P-INDEP
-;* V49 tmp45        [V49    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
-;* V50 tmp46        [V50,T13] (  0,  0   )   byref  ->  zero-ref    single-def "field V17._reference (fldOffset=0x0)" P-INDEP
-;  V51 tmp47        [V51,T12] (  2,  1   )     int  ->  rax         "field V17._length (fldOffset=0x8)" P-INDEP
-;  V52 tmp48        [V52,T07] (  5,  4.50)   byref  ->  r13         single-def "field V19._reference (fldOffset=0x0)" P-INDEP
-;  V53 tmp49        [V53,T08] (  5,  4.50)     int  ->  r14         "field V19._length (fldOffset=0x8)" P-INDEP
-;* V54 tmp50        [V54    ] (  0,  0   )   byref  ->  zero-ref    "field V21._reference (fldOffset=0x0)" P-INDEP
-;* V55 tmp51        [V55    ] (  0,  0   )     int  ->  zero-ref    "field V21._length (fldOffset=0x8)" P-INDEP
-;* V56 tmp52        [V56    ] (  0,  0   )   byref  ->  zero-ref    "field V23._reference (fldOffset=0x0)" P-INDEP
-;* V57 tmp53        [V57    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
-;* V58 tmp54        [V58    ] (  0,  0   )   byref  ->  zero-ref    "field V27._reference (fldOffset=0x0)" P-INDEP
-;* V59 tmp55        [V59    ] (  0,  0   )     int  ->  zero-ref    "field V27._length (fldOffset=0x8)" P-INDEP
-;  V60 tmp56        [V60,T11] (  2,  1   )   byref  ->  rax         single-def "field V28._reference (fldOffset=0x0)" P-INDEP
-;* V61 tmp57        [V61    ] (  0,  0   )     int  ->  zero-ref    "field V28._length (fldOffset=0x8)" P-INDEP
+;  V18 tmp14        [V18,T00] ( 14, 18.54)     int  ->  [rbp-0x2C]  "Inline stloc first use temp"
+;* V19 tmp15        [V19    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.ReadOnlySpan`1[short]>
+;* V20 tmp16        [V20    ] (  0,  0   )  struct (16) zero-ref    multireg-ret ld-addr-op "NewObj constructor temp" <System.Span`1[short]>
+;* V21 tmp17        [V21    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
+;  V22 tmp18        [V22,T01] (  7,  7   )   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
+;  V23 tmp19        [V23,T03] (  8,  4.04)     int  ->  r15         single-def "field V00._length (fldOffset=0x8)" P-INDEP
+;  V24 tmp20        [V24,T05] (  4,  2.50)   byref  ->  r13         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
+;  V25 tmp21        [V25,T04] (  5,  3.50)     int  ->  r14         single-def "field V01._length (fldOffset=0x8)" P-INDEP
+;* V26 tmp22        [V26    ] (  0,  0   )   byref  ->  zero-ref    "field V05._reference (fldOffset=0x0)" P-DEP
+;* V27 tmp23        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-DEP
+;* V28 tmp24        [V28    ] (  0,  0   )   byref  ->  zero-ref    "field V06._reference (fldOffset=0x0)" P-INDEP
+;* V29 tmp25        [V29    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-INDEP
+;* V30 tmp26        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V07._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp27        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V07._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp28        [V32    ] (  0,  0   )   byref  ->  zero-ref    "field V08._reference (fldOffset=0x0)" P-DEP
+;* V33 tmp29        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-DEP
+;* V34 tmp30        [V34    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp31        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;* V36 tmp32        [V36    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
+;* V37 tmp33        [V37    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
+;* V38 tmp34        [V38    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V13._reference (fldOffset=0x0)" P-INDEP
+;* V39 tmp35        [V39    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
+;* V40 tmp36        [V40    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V14._reference (fldOffset=0x0)" P-INDEP
+;* V41 tmp37        [V41    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
+;* V42 tmp38        [V42,T11] (  0,  0   )   byref  ->  zero-ref    single-def "field V17._reference (fldOffset=0x0)" P-INDEP
+;  V43 tmp39        [V43,T10] (  2,  1   )     int  ->  rax         "field V17._length (fldOffset=0x8)" P-INDEP
+;  V44 tmp40        [V44,T06] (  3,  4.50)   byref  ->  r13         single-def "field V19._reference (fldOffset=0x0)" P-INDEP
+;  V45 tmp41        [V45,T07] (  3,  4.50)     int  ->  r14         "field V19._length (fldOffset=0x8)" P-INDEP
+;  V46 tmp42        [V46,T09] (  2,  1   )   byref  ->  rax         single-def "field V20._reference (fldOffset=0x0)" P-INDEP
+;* V47 tmp43        [V47    ] (  0,  0   )     int  ->  zero-ref    "field V20._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 8
 
 G_M36069_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      rbx, rdi
        mov      r15d, esi
        mov      r13, rdx
        mov      r14d, ecx
 						;; size=28 bbWeight=1 PerfScore 8.50
 G_M36069_IG02:
        cmp      r14d, 1
        jg       SHORT G_M36069_IG07
 						;; size=6 bbWeight=1 PerfScore 1.25
 G_M36069_IG03:
        cmp      r14d, 1
        je       SHORT G_M36069_IG05
        mov      rax, rbx
        mov      rdx, r15
 						;; size=12 bbWeight=0.50 PerfScore 0.88
 G_M36069_IG04:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
 G_M36069_IG05:
        movsx    rdx, word  ptr [r13]
        mov      rdi, rbx
        mov      esi, r15d
        mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:Trim[short](System.Span`1[short],short):System.Span`1[short]
 						;; size=21 bbWeight=0.50 PerfScore 1.38
 G_M36069_IG06:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax]System.MemoryExtensions:Trim[short](System.Span`1[short],short):System.Span`1[short]
 						;; size=17 bbWeight=0.50 PerfScore 2.62
 G_M36069_IG07:
        mov      rdi, rbx
        mov      esi, r15d
        mov      rdx, r13
        mov      ecx, r14d
        mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int
        call     [rax]System.MemoryExtensions:ClampStart[short](System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[short]):int
        mov      r12d, eax
        mov      eax, r15d
        dec      eax
        cmp      eax, r12d
-       jl       SHORT G_M36069_IG12
-       mov      edi, eax
-       or       edi, r12d
-       jl       G_M36069_IG17
+       jl       SHORT G_M36069_IG09
+       mov      edx, eax
+       or       edx, r12d
+       jl       SHORT G_M36069_IG13
        cmp      eax, r15d
-       jge      G_M36069_IG17
-						;; size=57 bbWeight=0.50 PerfScore 4.50
+       jge      SHORT G_M36069_IG13
+						;; size=49 bbWeight=0.50 PerfScore 4.50
 G_M36069_IG08:
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [rbx+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M36069_IG10
-						;; size=23 bbWeight=3.96 PerfScore 19.80
-G_M36069_IG09:
+       mov      edx, eax
+       movsx    rdx, word  ptr [rbx+2*rdx]
        mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M36069_IG11
-						;; size=20 bbWeight=1.98 PerfScore 11.38
-G_M36069_IG10:
-       mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=1.98 PerfScore 7.42
-G_M36069_IG11:
+       mov      esi, r14d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
        test     eax, eax
-       je       SHORT G_M36069_IG14
+       je       SHORT G_M36069_IG11
        mov      eax, dword ptr [rbp-0x2C]
        dec      eax
        cmp      eax, r12d
        jge      SHORT G_M36069_IG08
-						;; size=14 bbWeight=3.96 PerfScore 14.85
-G_M36069_IG12:
+						;; size=42 bbWeight=3.96 PerfScore 42.57
+G_M36069_IG09:
        mov      edx, eax
        sub      edx, r12d
        inc      edx
        mov      eax, r12d
        mov      ecx, edx
        add      rax, rcx
        mov      ecx, r15d
        cmp      rax, rcx
-       ja       SHORT G_M36069_IG20
+       ja       SHORT G_M36069_IG15
        mov      eax, r12d
        lea      rax, bword ptr [rbx+2*rax]
 						;; size=30 bbWeight=0.50 PerfScore 1.88
-G_M36069_IG13:
+G_M36069_IG10:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=0.50 PerfScore 2.12
-G_M36069_IG14:
+G_M36069_IG11:
        mov      eax, dword ptr [rbp-0x2C]
-       jmp      SHORT G_M36069_IG12
+       jmp      SHORT G_M36069_IG09
 						;; size=5 bbWeight=1.98 PerfScore 5.94
-G_M36069_IG15:
-       mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-       call     [rcx]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=18 bbWeight=0.02 PerfScore 0.08
-G_M36069_IG16:
-       test     eax, eax
-       je       SHORT G_M36069_IG19
+G_M36069_IG12:
        mov      eax, dword ptr [rbp-0x2C]
        dec      eax
        cmp      eax, r12d
-       jl       SHORT G_M36069_IG12
-						;; size=14 bbWeight=0.04 PerfScore 0.15
-G_M36069_IG17:
+       jl       SHORT G_M36069_IG09
+						;; size=10 bbWeight=0.04 PerfScore 0.10
+G_M36069_IG13:
        cmp      eax, r15d
-       jae      SHORT G_M36069_IG21
+       jae      SHORT G_M36069_IG16
        mov      dword ptr [rbp-0x2C], eax
-       mov      edi, eax
-       movsx    rsi, word  ptr [rbx+2*rdi]
-       movzx    rdi, si
-       dec      edi
-       cmp      edi, 254
-       jb       SHORT G_M36069_IG15
-						;; size=28 bbWeight=0.04 PerfScore 0.25
-G_M36069_IG18:
+       mov      edx, eax
+       movsx    rdx, word  ptr [rbx+2*rdx]
        mov      rdi, r13
-       mov      edx, r14d
-       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       call     [rcx]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-       jmp      SHORT G_M36069_IG16
-						;; size=20 bbWeight=0.02 PerfScore 0.12
-G_M36069_IG19:
+       mov      esi, r14d
+       mov      rcx, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       call     [rcx]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+       test     eax, eax
+       jne      SHORT G_M36069_IG12
+						;; size=37 bbWeight=0.04 PerfScore 0.38
+G_M36069_IG14:
        mov      eax, dword ptr [rbp-0x2C]
-       jmp      G_M36069_IG12
-						;; size=8 bbWeight=0.02 PerfScore 0.06
-G_M36069_IG20:
+       jmp      SHORT G_M36069_IG09
+						;; size=5 bbWeight=0.02 PerfScore 0.06
+G_M36069_IG15:
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
        call     [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
        int3     
 						;; size=13 bbWeight=0 PerfScore 0.00
-G_M36069_IG21:
+G_M36069_IG16:
        call     CORINFO_HELP_RNGCHKFAIL
        int3     
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 388, prolog size 28, PerfScore 85.30, instruction count 128, allocated bytes for code 388 (MethodHash=f4f9731a) for method System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
+; Total bytes of code 311, prolog size 28, PerfScore 74.30, instruction count 110, allocated bytes for code 311 (MethodHash=f4f9731a) for method System.MemoryExtensions:Trim[short](System.Span`1[short],System.ReadOnlySpan`1[short]):System.Span`1[short] (FullOpts)
 ; ============================================================

-36 (-67.92 % of base) - System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool

 ; Assembly listing for method System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool (FullOpts)
 ; Emitting BLENDED_CODE for x64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rsp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 7 single block inlinees; 2 inlinees without PGO data
+; 0 inlinees with PGO data; 2 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    multireg-arg single-def <System.Span`1[short]>
-;  V01 arg1         [V01,T00] (  5,  4   )   short  ->  rdx         single-def
+;  V01 arg1         [V01,T00] (  3,  3   )   short  ->  rdx         single-def
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V03 tmp1         [V03    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[short]>
 ;* V04 tmp2         [V04    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[short]>
-;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
+;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[short]>
 ;* V06 tmp4         [V06    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
 ;* V07 tmp5         [V07    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V08 tmp6         [V08    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V09 tmp7         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V10 tmp8         [V10    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V11 tmp9         [V11    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V12 tmp10        [V12    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
-;* V13 tmp11        [V13    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V14 tmp12        [V14    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V15 tmp13        [V15,T01] (  3,  2   )   byref  ->  rdi         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
-;  V16 tmp14        [V16,T02] (  3,  2   )     int  ->  rax         single-def "field V00._length (fldOffset=0x8)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )   byref  ->  zero-ref    "field V03._reference (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V04._reference (fldOffset=0x0)" P-INDEP
-;* V20 tmp18        [V20    ] (  0,  0   )     int  ->  zero-ref    "field V04._length (fldOffset=0x8)" P-INDEP
-;* V21 tmp19        [V21    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V05._reference (fldOffset=0x0)" P-INDEP
-;* V22 tmp20        [V22    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-INDEP
-;* V23 tmp21        [V23    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
-;* V24 tmp22        [V24    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
-;* V25 tmp23        [V25    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
-;* V26 tmp24        [V26    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
-;* V27 tmp25        [V27    ] (  0,  0   )   byref  ->  zero-ref    "field V14._reference (fldOffset=0x0)" P-INDEP
-;* V28 tmp26        [V28    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
+;  V08 tmp6         [V08,T01] (  2,  2   )   byref  ->  rdi         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
+;  V09 tmp7         [V09,T02] (  2,  2   )     int  ->  rsi         single-def "field V00._length (fldOffset=0x8)" P-INDEP
+;* V10 tmp8         [V10    ] (  0,  0   )   byref  ->  zero-ref    "field V03._reference (fldOffset=0x0)" P-INDEP
+;* V11 tmp9         [V11    ] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
+;* V12 tmp10        [V12    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V04._reference (fldOffset=0x0)" P-INDEP
+;* V13 tmp11        [V13    ] (  0,  0   )     int  ->  zero-ref    "field V04._length (fldOffset=0x8)" P-INDEP
+;* V14 tmp12        [V14    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V05._reference (fldOffset=0x0)" P-INDEP
+;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 0
 
 G_M54526_IG01:
-       mov      eax, esi
-						;; size=2 bbWeight=1 PerfScore 0.25
+						;; size=0 bbWeight=1 PerfScore 0.00
 G_M54526_IG02:
-       movzx    rsi, dx
-       dec      esi
-       cmp      esi, 254
-       jb       SHORT G_M54526_IG05
-						;; size=13 bbWeight=1 PerfScore 1.75
+       movsx    rdx, dx
+       mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+						;; size=14 bbWeight=1 PerfScore 0.50
 G_M54526_IG03:
-       movsx    rsi, dx
-       mov      edx, eax
-       mov      rax, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-						;; size=16 bbWeight=0.50 PerfScore 0.38
-G_M54526_IG04:
-       tail.jmp [rax]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-						;; size=3 bbWeight=0.50 PerfScore 1.00
-G_M54526_IG05:
-       movsx    rsi, dx
-       mov      edx, eax
-       mov      rax, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=16 bbWeight=0.50 PerfScore 0.38
-G_M54526_IG06:
-       tail.jmp [rax]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=3 bbWeight=0.50 PerfScore 1.00
+       tail.jmp [rax]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+						;; size=3 bbWeight=1 PerfScore 2.00
 
-; Total bytes of code 53, prolog size 2, PerfScore 4.75, instruction count 13, allocated bytes for code 53 (MethodHash=af462b01) for method System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool (FullOpts)
+; Total bytes of code 17, prolog size 0, PerfScore 2.50, instruction count 3, allocated bytes for code 17 (MethodHash=af462b01) for method System.MemoryExtensions:Contains[short](System.Span`1[short],short):bool (FullOpts)
 ; ============================================================

-32 (-57.14 % of base) - System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool

 ; Assembly listing for method System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool (FullOpts)
 ; Emitting BLENDED_CODE for x64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rsp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 5 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  5,  4   )   short  ->  rdi         single-def
+;  V00 arg0         [V00,T00] (  3,  3   )   short  ->  rax         single-def
 ;* V01 arg1         [V01    ] (  0,  0   )  struct (16) zero-ref    multireg-arg single-def <System.ReadOnlySpan`1[short]>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V03 tmp1         [V03    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V04 tmp2         [V04    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;* V06 tmp4         [V06    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;* V07 tmp5         [V07    ] (  0,  0   )   byref  ->  zero-ref    single-def "Inlining Arg"
-;* V08 tmp6         [V08    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V09 tmp7         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[short]>
-;  V10 tmp8         [V10,T01] (  3,  2   )   byref  ->  rax         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
-;  V11 tmp9         [V11,T02] (  3,  2   )     int  ->  rdx         single-def "field V01._length (fldOffset=0x8)" P-INDEP
-;* V12 tmp10        [V12    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V04._reference (fldOffset=0x0)" P-INDEP
-;* V13 tmp11        [V13    ] (  0,  0   )     int  ->  zero-ref    "field V04._length (fldOffset=0x8)" P-INDEP
-;* V14 tmp12        [V14    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V05._reference (fldOffset=0x0)" P-INDEP
-;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-INDEP
-;* V16 tmp14        [V16    ] (  0,  0   )   byref  ->  zero-ref    "field V09._reference (fldOffset=0x0)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;  V03 tmp1         [V03,T01] (  2,  2   )   byref  ->  rsi         single-def "field V01._reference (fldOffset=0x0)" P-INDEP
+;  V04 tmp2         [V04,T02] (  2,  2   )     int  ->  rdx         single-def "field V01._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 0
 
 G_M53131_IG01:
-       mov      rax, rsi
-						;; size=3 bbWeight=1 PerfScore 0.25
+       mov      eax, edi
+						;; size=2 bbWeight=1 PerfScore 0.25
 G_M53131_IG02:
-       movzx    rsi, di
-       dec      esi
-       cmp      esi, 254
-       jb       SHORT G_M53131_IG05
-						;; size=13 bbWeight=1 PerfScore 1.75
+       mov      rdi, rsi
+       mov      esi, edx
+       movsx    rdx, ax
+       mov      rax, 0xD1FFAB1E      ; code for System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+						;; size=19 bbWeight=1 PerfScore 1.00
 G_M53131_IG03:
-       movsx    rsi, di
-       mov      rdi, rax
-       mov      rax, 0xD1FFAB1E      ; code for System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-						;; size=17 bbWeight=0.50 PerfScore 0.38
-G_M53131_IG04:
-       tail.jmp [rax]System.SpanHelpers:NonPackedContainsValueType[short](byref,short,int):bool
-						;; size=3 bbWeight=0.50 PerfScore 1.00
-G_M53131_IG05:
-       movsx    rsi, di
-       mov      rdi, rax
-       mov      rax, 0xD1FFAB1E      ; code for System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=17 bbWeight=0.50 PerfScore 0.38
-G_M53131_IG06:
-       tail.jmp [rax]System.PackedSpanHelpers:Contains(byref,short,int):bool
-						;; size=3 bbWeight=0.50 PerfScore 1.00
+       tail.jmp [rax]System.MemoryExtensions:Contains[short](System.ReadOnlySpan`1[short],short):bool
+						;; size=3 bbWeight=1 PerfScore 2.00
 
-; Total bytes of code 56, prolog size 3, PerfScore 4.75, instruction count 13, allocated bytes for code 56 (MethodHash=5d373074) for method System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool (FullOpts)
+; Total bytes of code 24, prolog size 2, PerfScore 3.25, instruction count 6, allocated bytes for code 24 (MethodHash=5d373074) for method System.Security.Cryptography.PemEncoding:IsWhiteSpaceCharacter[short](short,System.ReadOnlySpan`1[short]):bool (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/d2c5ef441fa39072f038d91b8f85fc9e

[MihuBot]

@MihaZupan