[JitDiff X64] [EgorBo] Revert potential UB due to aliasing + more WB removals

[MihuBot]

Job completed in 14 minutes 22 seconds.
dotnet/runtime#111733

Diffs

Diffs

Found 267 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 40347013
Total bytes of diff: 40347533
Total bytes of delta: 520 (0.00 % of base)
Total relative delta: 5.77
 diff is a regression.
 relative diff is a regression.


Top file regressions (bytes):
 724 : System.Memory.dasm (0.25 % of base)
 407 : System.Text.RegularExpressions.dasm (0.05 % of base)
 44 : System.Private.CoreLib.dasm (0.00 % of base)
 40 : System.Text.Json.dasm (0.00 % of base)
 5 : System.Security.Cryptography.dasm (0.00 % of base)

Top file improvements (bytes):
 -700 : System.Numerics.Tensors.dasm (-0.04 % of base)

6 total files with Code Size differences (1 improved, 5 regressed), 253 unchanged.

Top method regressions (bytes):
 99 (5.43 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:.ctor(System.Buffers.ReadOnlySequence`1[ubyte],ubyte,System.Text.Json.JsonReaderState):this (FullOpts)
 69 (53.08 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 68 (47.55 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:GetNextSpan():this (FullOpts)
 53 (7.48 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:GetNextSpan():this (FullOpts)
 53 (7.52 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:GetNextSpan():this (FullOpts)
 53 (51.46 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 47 (120.51 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueMatchEnumerator:this (FullOpts)
 44 (133.33 % of base) : System.Private.CoreLib.dasm - System.Reflection.MethodBase+StackAllocatedArguments:.ctor(System.Object,System.Object,System.Object,System.Object):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:.ctor(System.Buffers.ReadOnlySequence`1[double]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:.ctor(System.Buffers.ReadOnlySequence`1[int]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:.ctor(System.Buffers.ReadOnlySequence`1[long]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:.ctor(System.Buffers.ReadOnlySequence`1[short]):this (FullOpts)
 40 (6.73 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:.ctor(System.Buffers.ReadOnlySequence`1[System.Numerics.Vector`1[float]]):this (FullOpts)
 40 (6.97 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:.ctor(System.Buffers.ReadOnlySequence`1[ubyte]):this (FullOpts)
 35 (112.90 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueMatchEnumerator:this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:ResetReader():this (FullOpts)
 27 (3.87 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:ResetReader():this (FullOpts)
 27 (3.90 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:ResetReader():this (FullOpts)
 24 (16.00 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String,int,System.TimeSpan):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 24 (15.29 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 24 (16.67 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 21 (25.93 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String,int,System.TimeSpan):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 21 (23.86 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String,int):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 21 (28.00 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 20 (1.78 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this (FullOpts)
 5 (3.68 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEnumerator:Utf16(System.ReadOnlySpan`1[ushort]):System.Security.Cryptography.PemEnumerator`1[ushort] (FullOpts)
 2 (0.60 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:.ctor(System.ReadOnlySpan`1[ubyte],ubyte,System.Text.Json.JsonReaderState):this (FullOpts)
 2 (8.00 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:set_ValueSequence(System.Buffers.ReadOnlySequence`1[ubyte]):this (FullOpts)
 1 (0.13 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:SkipOrConsumeCommentMultiSegmentWithRollback():ubyte:this (FullOpts)

Top method improvements (bytes):
 -25 (-3.92 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -20 (-5.01 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -18 (-1.88 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:TryGetNumberMultiSegment(System.ReadOnlySpan`1[ubyte],byref):ubyte:this (FullOpts)
 -12 (-3.06 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(System.ReadOnlySpan`1[double],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(int[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(int[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(int[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(long[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(long[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(long[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(ulong,long):this (FullOpts)
 -5 (-2.72 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.83 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.__Canon[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.70 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.__Canon[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.02 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.__Canon[]):this (FullOpts)
 -5 (-0.56 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.56 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.ReadOnlySpan`1[System.__Canon],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.ReadOnlySpan`1[System.Nullable`1[int]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(System.ReadOnlySpan`1[ubyte],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.99 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.85 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(double[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(double[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(System.Span`1[double],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(int[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(int[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(int[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(System.Span`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(ulong,long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(long[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(long[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(long[]):this (FullOpts)
 -5 (-0.58 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(System.Array,System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.59 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(System.Array,System.ReadOnlySpan`1[System.Buffers.NIndex],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(System.Span`1[long],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)

Top method regressions (percentages):
 44 (133.33 % of base) : System.Private.CoreLib.dasm - System.Reflection.MethodBase+StackAllocatedArguments:.ctor(System.Object,System.Object,System.Object,System.Object):this (FullOpts)
 47 (120.51 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueMatchEnumerator:this (FullOpts)
 35 (112.90 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueMatchEnumerator:this (FullOpts)
 69 (53.08 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 53 (51.46 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 68 (47.55 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 21 (28.00 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 21 (25.93 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String,int,System.TimeSpan):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 21 (23.86 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateMatches(System.ReadOnlySpan`1[ushort],System.String,int):System.Text.RegularExpressions.Regex+ValueMatchEnumerator (FullOpts)
 24 (16.67 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 24 (16.00 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String,int,System.TimeSpan):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 24 (15.29 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],System.String,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator (FullOpts)
 2 (8.00 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:set_ValueSequence(System.Buffers.ReadOnlySequence`1[ubyte]):this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:GetNextSpan():this (FullOpts)
 54 (7.68 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:GetNextSpan():this (FullOpts)
 53 (7.52 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:GetNextSpan():this (FullOpts)
 53 (7.48 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:GetNextSpan():this (FullOpts)
 40 (6.97 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:.ctor(System.Buffers.ReadOnlySequence`1[ubyte]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:.ctor(System.Buffers.ReadOnlySequence`1[double]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:.ctor(System.Buffers.ReadOnlySequence`1[int]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:.ctor(System.Buffers.ReadOnlySequence`1[long]):this (FullOpts)
 40 (6.93 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:.ctor(System.Buffers.ReadOnlySequence`1[short]):this (FullOpts)
 40 (6.73 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:.ctor(System.Buffers.ReadOnlySequence`1[System.Numerics.Vector`1[float]]):this (FullOpts)
 99 (5.43 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:.ctor(System.Buffers.ReadOnlySequence`1[ubyte],ubyte,System.Text.Json.JsonReaderState):this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[double]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[int]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[long]:ResetReader():this (FullOpts)
 27 (3.91 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[short]:ResetReader():this (FullOpts)
 27 (3.90 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[ubyte]:ResetReader():this (FullOpts)
 27 (3.87 % of base) : System.Memory.dasm - System.Buffers.SequenceReader`1[System.Numerics.Vector`1[float]]:ResetReader():this (FullOpts)
 5 (3.68 % of base) : System.Security.Cryptography.dasm - System.Security.Cryptography.PemEnumerator:Utf16(System.ReadOnlySpan`1[ushort]):System.Security.Cryptography.PemEnumerator`1[ushort] (FullOpts)
 20 (1.78 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this (FullOpts)
 2 (0.60 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:.ctor(System.ReadOnlySpan`1[ubyte],ubyte,System.Text.Json.JsonReaderState):this (FullOpts)
 1 (0.13 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:SkipOrConsumeCommentMultiSegmentWithRollback():ubyte:this (FullOpts)

Top method improvements (percentages):
 -5 (-12.20 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:RollBackState(byref,ubyte):this (FullOpts)
 -20 (-5.01 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -25 (-3.92 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-3.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -12 (-3.06 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -5 (-2.72 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -5 (-2.72 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.__Canon]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 -18 (-1.88 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:TryGetNumberMultiSegment(System.ReadOnlySpan`1[ubyte],byref):ubyte:this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.35 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(ulong,long):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(int[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(long[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(double[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(int[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(long[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(short[]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][]):this (FullOpts)
 -5 (-1.21 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(ubyte[]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(System.ReadOnlySpan`1[double],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(System.ReadOnlySpan`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(System.ReadOnlySpan`1[short],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.ReadOnlySpan`1[System.__Canon],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.ReadOnlySpan`1[System.Nullable`1[int]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.ReadOnlySpan`1[System.Numerics.Vector`1[float]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(System.ReadOnlySpan`1[ubyte],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(System.Span`1[double],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(System.Span`1[int],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(System.Span`1[long],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(System.Span`1[short],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.__Canon]:.ctor(System.Span`1[System.__Canon],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(System.Span`1[System.Nullable`1[int]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Span`1[System.Numerics.Vector`1[float]],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.18 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(System.Span`1[ubyte],System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.17 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(ulong,long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-1.02 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.__Canon]:.ctor(System.__Canon[]):this (FullOpts)
 -5 (-1.02 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.__Canon]:.ctor(System.__Canon[]):this (FullOpts)
 -4 (-1.01 % of base) : System.Text.Json.dasm - System.Text.Json.Utf8JsonReader:ConsumeZeroMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 -5 (-0.99 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.99 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(ubyte[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(short[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(int[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[long]:.ctor(long[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[int]:.ctor(int[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[long]:.ctor(long[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Nullable`1[int]]:.ctor(System.Nullable`1[int][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.98 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[System.Numerics.Vector`1[float]]:.ctor(System.Numerics.Vector`1[float][],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.85 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[ubyte]:.ctor(ubyte[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.85 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[ubyte]:.ctor(ubyte[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.ReadOnlyTensorSpan`1[short]:.ctor(short[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 -5 (-0.84 % of base) : System.Numerics.Tensors.dasm - System.Numerics.Tensors.TensorSpan`1[short]:.ctor(short[],System.Index,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)

182 total methods with Code Size differences (146 improved, 36 regressed), 235212 unchanged.

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

Artifacts:

• build-clr-checked-main.zip (88 MB)
• build-artifacts-main.zip (708 MB)
• build-clr-checked-pr.zip (88 MB)
• build-artifacts-pr.zip (709 MB)
• jit-diffs-main.zip (137 MB)
• jit-diffs-pr.zip (137 MB)
• diff-frameworks.txt (52 KB)
• ShortDiffsRegressions.md (58 KB)
• LongDiffsRegressions.md (439 KB)
• ShortDiffsImprovements.md (59 KB)
• LongDiffsImprovements.md (278 KB)

[MihuBot]

Top method regressions

69 (53.08 % of base) - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this

 ; Assembly listing for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator: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; 2 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
-; V00 this [V00,T02] ( 4, 4 ) ref -> rdi this class-hnd single-def <System.Text.RegularExpressions.Regex>
-; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rsi single-def
+; V00 this [V00,T02] ( 4, 4 ) ref -> [rbp-0x38] this class-hnd single-def <System.Text.RegularExpressions.Regex>
+; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rbx single-def
 ;* V02 arg1 [V02 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[ushort]>
 ; V03 arg2 [V03,T01] ( 5, 5 ) int -> r8 single-def
-; V04 arg3 [V04,T03] ( 4, 4 ) int -> r9 single-def
+; V04 arg3 [V04,T03] ( 4, 4 ) int -> r15 single-def
 ;# V05 OutArgs [V05 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V06 tmp1 [V06 ] ( 0, 0 ) struct (16) zero-ref "impAppendStmt" <System.ReadOnlySpan`1[ushort]>
 ;* V07 tmp2 [V07,T09] ( 0, 0 ) struct (48) zero-ref do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Text.RegularExpressions.Regex+ValueSplitEnumerator>
 ;* V08 tmp3 [V08 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
-; V09 tmp4 [V09,T06] ( 2, 4 ) ubyte -> rax "Inlining Arg"
+; V09 tmp4 [V09,T06] ( 2, 4 ) ubyte -> rsi "Inlining Arg"
 ;* V10 tmp5 [V10 ] ( 0, 0 ) byref -> zero-ref 
 ;* V11 tmp6 [V11 ] ( 0, 0 ) byref -> zero-ref 
-; V12 tmp7 [V12,T07] ( 2, 2 ) int -> rax 
+; V12 tmp7 [V12,T07] ( 2, 2 ) int -> r12 
 ;* V13 tmp8 [V13 ] ( 0, 0 ) struct ( 8) zero-ref ld-addr-op "NewObj constructor temp" <System.ValueTuple`2[int,int]>
 ;* V14 tmp9 [V14 ] ( 0, 0 ) byref -> zero-ref 
 ;* V15 tmp10 [V15 ] ( 0, 0 ) byref -> zero-ref 
-; V16 tmp11 [V16,T08] ( 2, 2 ) int -> r8 
-; V17 tmp12 [V17,T05] ( 2, 2 ) byref -> rdx single-def "field V02._reference (fldOffset=0x0)" P-INDEP
-; V18 tmp13 [V18,T04] ( 4, 4 ) int -> rcx single-def "field V02._length (fldOffset=0x8)" P-INDEP
+; V16 tmp11 [V16,T08] ( 2, 2 ) int -> [rbp-0x2C] spill-single-def
+; V17 tmp12 [V17,T05] ( 2, 2 ) byref -> r13 single-def "field V02._reference (fldOffset=0x0)" P-INDEP
+; V18 tmp13 [V18,T04] ( 4, 4 ) int -> r14 single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V19 tmp14 [V19 ] ( 0, 0 ) byref -> zero-ref "field V06._reference (fldOffset=0x0)" P-INDEP
 ;* V20 tmp15 [V20 ] ( 0, 0 ) int -> zero-ref "field V06._length (fldOffset=0x8)" P-INDEP
 ;* V21 tmp16 [V21 ] ( 0, 0 ) byref -> zero-ref single-def "field V08._reference (fldOffset=0x0)" P-INDEP
 ;* V22 tmp17 [V22 ] ( 0, 0 ) int -> zero-ref "field V08._length (fldOffset=0x8)" P-INDEP
 ;* V23 tmp18 [V23 ] ( 0, 0 ) int -> zero-ref "field V13.Item1 (fldOffset=0x0)" P-INDEP
 ;* V24 tmp19 [V24 ] ( 0, 0 ) int -> zero-ref "field V13.Item2 (fldOffset=0x4)" P-INDEP
 ;* V25 tmp20 [V25 ] ( 0, 0 ) ref -> zero-ref single-def "V07.[000..008)"
 ;* V26 tmp21 [V26 ] ( 0, 0 ) int -> zero-ref "V07.[008..012)"
 ;* V27 tmp22 [V27 ] ( 0, 0 ) int -> zero-ref "V07.[012..016)"
 ;* V28 tmp23 [V28 ] ( 0, 0 ) byref -> zero-ref single-def "V07.[016..024)"
 ;* V29 tmp24 [V29 ] ( 0, 0 ) int -> zero-ref "V07.[024..028)"
 ;* V30 tmp25 [V30 ] ( 0, 0 ) int -> zero-ref "V07.[032..036)"
 ;* V31 tmp26 [V31 ] ( 0, 0 ) int -> zero-ref "V07.[036..040)"
 ;
-; Lcl frame size = 0
+; Lcl frame size = 24
 
 G_M22749_IG01:
 push rbp
- mov rbp, rsp
-						;; size=4 bbWeight=1 PerfScore 1.25
+ push r15
+ push r14
+ push r13
+ push r12
+ push rbx
+ sub rsp, 24
+ lea rbp, [rsp+0x40]
+ mov rbx, rsi
+ mov r13, rdx
+ mov r14d, ecx
+ mov r15d, r9d
+						;; size=31 bbWeight=1 PerfScore 7.75
 G_M22749_IG02:
 test r8d, r8d
- jl SHORT G_M22749_IG05
- cmp r9d, ecx
+ jl G_M22749_IG05
+ cmp r15d, r14d
 ja SHORT G_M22749_IG04
+ mov gword ptr [rbp-0x38], rdi
 test byte ptr [rdi+0x40], 64
- setne al
- movzx rax, al
- xor r10d, r10d
- test eax, eax
- mov eax, r10d
- cmovne eax, ecx
- mov r10d, 0xD1FFAB1E
- test r8d, r8d
- cmove r8d, r10d
- mov gword ptr [rsi], rdi
- mov dword ptr [rsi+0x08], r9d
- mov dword ptr [rsi+0x0C], r8d
- mov bword ptr [rsi+0x10], rdx
- mov dword ptr [rsi+0x18], ecx
- mov dword ptr [rsi+0x20], eax
- mov dword ptr [rsi+0x24], -1
+ setne sil
+ movzx rsi, sil
 xor eax, eax
- mov qword ptr [rsi+0x28], rax
- mov rax, rsi
-						;; size=81 bbWeight=1 PerfScore 17.00
+ test esi, esi
+ mov r12d, eax
+ cmovne r12d, r14d
+ mov esi, 0xD1FFAB1E
+ test r8d, r8d
+ mov eax, esi
+ cmovne eax, r8d
+ mov dword ptr [rbp-0x2C], eax
+ mov rsi, gword ptr [rbp-0x38]
+ mov rdi, rbx
+ call CORINFO_HELP_CHECKED_ASSIGN_REF
+ mov dword ptr [rbx+0x08], r15d
+ mov r15d, dword ptr [rbp-0x2C]
+ mov dword ptr [rbx+0x0C], r15d
+ mov bword ptr [rbx+0x10], r13
+ mov dword ptr [rbx+0x18], r14d
+ mov dword ptr [rbx+0x20], r12d
+ mov dword ptr [rbx+0x24], -1
+ xor eax, eax
+ mov qword ptr [rbx+0x28], rax
+ mov rax, rbx
+						;; size=110 bbWeight=1 PerfScore 21.50
 G_M22749_IG03:
+ add rsp, 24
+ pop rbx
+ pop r12
+ pop r13
+ pop r14
+ pop r15
 pop rbp
 ret 
-						;; size=2 bbWeight=1 PerfScore 1.50
+						;; size=15 bbWeight=1 PerfScore 4.25
 G_M22749_IG04:
 mov edi, 14
 xor esi, esi
 mov rax, 0xD1FFAB1E ; code for System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 call [rax]System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 int3 
 						;; size=20 bbWeight=0.50 PerfScore 2.00
 G_M22749_IG05:
 mov edi, 3
 mov esi, 1
 mov rax, 0xD1FFAB1E ; code for System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 call [rax]System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 int3 
 						;; size=23 bbWeight=0.50 PerfScore 2.00
 
-; Total bytes of code 130, prolog size 4, PerfScore 23.75, instruction count 38, allocated bytes for code 130 (MethodHash=9224a722) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
+; Total bytes of code 199, prolog size 19, PerfScore 37.50, instruction count 60, allocated bytes for code 199 (MethodHash=9224a722) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int,int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 ; ============================================================

68 (47.55 % of base) - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this

 ; Assembly listing for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator: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; 3 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-; V00 this [V00,T03] ( 4, 4 ) ref -> rdi this class-hnd single-def <System.Text.RegularExpressions.Regex>
-; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rsi single-def
+; V00 this [V00,T03] ( 4, 4 ) ref -> [rbp-0x38] this class-hnd single-def <System.Text.RegularExpressions.Regex>
+; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rbx single-def
 ;* V02 arg1 [V02 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[ushort]>
 ; V03 arg2 [V03,T01] ( 5, 5 ) int -> r8 single-def
 ;# V04 OutArgs [V04 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V05 tmp1 [V05 ] ( 0, 0 ) struct (16) zero-ref "impAppendStmt" <System.ReadOnlySpan`1[ushort]>
 ;* V06 tmp2 [V06 ] ( 0, 0 ) ref -> zero-ref single-def
 ;* V07 tmp3 [V07 ] ( 0, 0 ) struct (16) zero-ref <System.ReadOnlySpan`1[ushort]>
 ;* V08 tmp4 [V08 ] ( 0, 0 ) int -> zero-ref 
 ;* V09 tmp5 [V09 ] ( 0, 0 ) ref -> zero-ref single-def
 ;* V10 tmp6 [V10 ] ( 0, 0 ) struct (16) zero-ref <System.ReadOnlySpan`1[ushort]>
 ;* V11 tmp7 [V11 ] ( 0, 0 ) int -> zero-ref 
-; V12 tmp8 [V12,T06] ( 3, 3 ) int -> r9 
+; V12 tmp8 [V12,T06] ( 3, 3 ) int -> r13 
 ;* V13 tmp9 [V13 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
 ;* V14 tmp10 [V14 ] ( 0, 0 ) struct (16) zero-ref "impAppendStmt" <System.ReadOnlySpan`1[ushort]>
 ;* V15 tmp11 [V15,T10] ( 0, 0 ) struct (48) zero-ref do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Text.RegularExpressions.Regex+ValueSplitEnumerator>
 ;* V16 tmp12 [V16 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
-; V17 tmp13 [V17,T05] ( 2, 4 ) ubyte -> rax "Inlining Arg"
+; V17 tmp13 [V17,T05] ( 2, 4 ) ubyte -> rsi "Inlining Arg"
 ;* V18 tmp14 [V18 ] ( 0, 0 ) byref -> zero-ref 
 ;* V19 tmp15 [V19 ] ( 0, 0 ) byref -> zero-ref 
-; V20 tmp16 [V20,T08] ( 2, 2 ) int -> rax 
+; V20 tmp16 [V20,T08] ( 2, 2 ) int -> r12 
 ;* V21 tmp17 [V21 ] ( 0, 0 ) struct ( 8) zero-ref ld-addr-op "NewObj constructor temp" <System.ValueTuple`2[int,int]>
 ;* V22 tmp18 [V22 ] ( 0, 0 ) byref -> zero-ref 
 ;* V23 tmp19 [V23 ] ( 0, 0 ) byref -> zero-ref 
-; V24 tmp20 [V24,T09] ( 2, 2 ) int -> r8 
-; V25 tmp21 [V25,T04] ( 2, 2 ) byref -> rdx single-def "field V02._reference (fldOffset=0x0)" P-INDEP
-; V26 tmp22 [V26,T02] ( 5, 5 ) int -> rcx single-def "field V02._length (fldOffset=0x8)" P-INDEP
+; V24 tmp20 [V24,T09] ( 2, 2 ) int -> [rbp-0x2C] spill-single-def
+; V25 tmp21 [V25,T04] ( 2, 2 ) byref -> r14 single-def "field V02._reference (fldOffset=0x0)" P-INDEP
+; V26 tmp22 [V26,T02] ( 5, 5 ) int -> r15 single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V27 tmp23 [V27 ] ( 0, 0 ) byref -> zero-ref single-def "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V28 tmp24 [V28 ] ( 0, 0 ) int -> zero-ref "field V05._length (fldOffset=0x8)" P-INDEP
 ;* V29 tmp25 [V29 ] ( 0, 0 ) byref -> zero-ref single-def "field V07._reference (fldOffset=0x0)" P-INDEP
 ;* V30 tmp26 [V30 ] ( 0, 0 ) int -> zero-ref "field V07._length (fldOffset=0x8)" P-INDEP
 ;* V31 tmp27 [V31 ] ( 0, 0 ) byref -> zero-ref single-def "field V10._reference (fldOffset=0x0)" P-INDEP
 ;* V32 tmp28 [V32 ] ( 0, 0 ) int -> zero-ref "field V10._length (fldOffset=0x8)" P-INDEP
 ;* V33 tmp29 [V33 ] ( 0, 0 ) byref -> zero-ref single-def "field V13._reference (fldOffset=0x0)" P-INDEP
 ;* V34 tmp30 [V34 ] ( 0, 0 ) int -> zero-ref "field V13._length (fldOffset=0x8)" P-INDEP
 ;* V35 tmp31 [V35 ] ( 0, 0 ) byref -> zero-ref "field V14._reference (fldOffset=0x0)" P-INDEP
 ;* V36 tmp32 [V36 ] ( 0, 0 ) int -> zero-ref "field V14._length (fldOffset=0x8)" P-INDEP
 ;* V37 tmp33 [V37 ] ( 0, 0 ) byref -> zero-ref single-def "field V16._reference (fldOffset=0x0)" P-INDEP
 ;* V38 tmp34 [V38 ] ( 0, 0 ) int -> zero-ref "field V16._length (fldOffset=0x8)" P-INDEP
 ;* V39 tmp35 [V39 ] ( 0, 0 ) int -> zero-ref "field V21.Item1 (fldOffset=0x0)" P-INDEP
 ;* V40 tmp36 [V40 ] ( 0, 0 ) int -> zero-ref "field V21.Item2 (fldOffset=0x4)" P-INDEP
 ;* V41 tmp37 [V41 ] ( 0, 0 ) ref -> zero-ref single-def "V15.[000..008)"
 ;* V42 tmp38 [V42 ] ( 0, 0 ) int -> zero-ref "V15.[008..012)"
 ;* V43 tmp39 [V43 ] ( 0, 0 ) int -> zero-ref "V15.[012..016)"
 ;* V44 tmp40 [V44 ] ( 0, 0 ) byref -> zero-ref single-def "V15.[016..024)"
 ;* V45 tmp41 [V45 ] ( 0, 0 ) int -> zero-ref "V15.[024..028)"
 ;* V46 tmp42 [V46 ] ( 0, 0 ) int -> zero-ref "V15.[032..036)"
 ;* V47 tmp43 [V47 ] ( 0, 0 ) int -> zero-ref "V15.[036..040)"
-; V48 cse0 [V48,T07] ( 3, 3 ) int -> rax "CSE #02: moderate"
+; V48 cse0 [V48,T07] ( 3, 3 ) int -> rsi "CSE #02: moderate"
 ;
-; Lcl frame size = 0
+; Lcl frame size = 24
 
 G_M53762_IG01:
 push rbp
- mov rbp, rsp
-						;; size=4 bbWeight=1 PerfScore 1.25
+ push r15
+ push r14
+ push r13
+ push r12
+ push rbx
+ sub rsp, 24
+ lea rbp, [rsp+0x40]
+ mov rbx, rsi
+ mov r14, rdx
+ mov r15d, ecx
+						;; size=28 bbWeight=1 PerfScore 7.50
 G_M53762_IG02:
- mov eax, dword ptr [rdi+0x40]
- and eax, 64
- xor r9d, r9d
- test eax, eax
- cmovne r9d, ecx
- test r8d, r8d
- jl SHORT G_M53762_IG05
- cmp r9d, ecx
- ja SHORT G_M53762_IG04
- test eax, eax
- setne al
- movzx rax, al
- xor r10d, r10d
- test eax, eax
- mov eax, r10d
- cmovne eax, ecx
- mov r10d, 0xD1FFAB1E
- test r8d, r8d
- cmove r8d, r10d
- mov gword ptr [rsi], rdi
- mov dword ptr [rsi+0x08], r9d
- mov dword ptr [rsi+0x0C], r8d
- mov bword ptr [rsi+0x10], rdx
- mov dword ptr [rsi+0x18], ecx
- mov dword ptr [rsi+0x20], eax
- mov dword ptr [rsi+0x24], -1
+ mov gword ptr [rbp-0x38], rdi
+ mov esi, dword ptr [rdi+0x40]
+ and esi, 64
 xor eax, eax
- mov qword ptr [rsi+0x28], rax
- mov rax, rsi
-						;; size=94 bbWeight=1 PerfScore 17.25
+ test esi, esi
+ mov r13d, eax
+ cmovne r13d, r15d
+ test r8d, r8d
+ jl G_M53762_IG05
+ cmp r13d, r15d
+ ja SHORT G_M53762_IG04
+ test esi, esi
+ setne sil
+ movzx rsi, sil
+ xor eax, eax
+ test esi, esi
+ mov r12d, eax
+ cmovne r12d, r15d
+ mov esi, 0xD1FFAB1E
+ test r8d, r8d
+ mov eax, esi
+ cmovne eax, r8d
+ mov dword ptr [rbp-0x2C], eax
+ mov rsi, gword ptr [rbp-0x38]
+ mov rdi, rbx
+ call CORINFO_HELP_CHECKED_ASSIGN_REF
+ mov dword ptr [rbx+0x08], r13d
+ mov r13d, dword ptr [rbp-0x2C]
+ mov dword ptr [rbx+0x0C], r13d
+ mov bword ptr [rbx+0x10], r14
+ mov dword ptr [rbx+0x18], r15d
+ mov dword ptr [rbx+0x20], r12d
+ mov dword ptr [rbx+0x24], -1
+ xor eax, eax
+ mov qword ptr [rbx+0x28], rax
+ mov rax, rbx
+						;; size=125 bbWeight=1 PerfScore 22.00
 G_M53762_IG03:
+ add rsp, 24
+ pop rbx
+ pop r12
+ pop r13
+ pop r14
+ pop r15
 pop rbp
 ret 
-						;; size=2 bbWeight=1 PerfScore 1.50
+						;; size=15 bbWeight=1 PerfScore 4.25
 G_M53762_IG04:
 mov edi, 14
 xor esi, esi
 mov rax, 0xD1FFAB1E ; code for System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 call [rax]System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 int3 
 						;; size=20 bbWeight=0.50 PerfScore 2.00
 G_M53762_IG05:
 mov edi, 3
 mov esi, 1
 mov rax, 0xD1FFAB1E ; code for System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 call [rax]System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 int3 
 						;; size=23 bbWeight=0.50 PerfScore 2.00
 
-; Total bytes of code 143, prolog size 4, PerfScore 24.00, instruction count 43, allocated bytes for code 143 (MethodHash=08172dfd) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
+; Total bytes of code 211, prolog size 19, PerfScore 37.75, instruction count 65, allocated bytes for code 211 (MethodHash=08172dfd) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort],int):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 ; ============================================================

54 (7.68 % of base) - System.Buffers.SequenceReader`1[double]:GetNextSpan():this

 ; Assembly listing for method System.Buffers.SequenceReader`1[double]:GetNextSpan():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; 24 single block inlinees; 7 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T00] ( 18, 46 ) byref -> rbx this single-def
 ;* V01 loc0 [V01 ] ( 0, 0 ) struct (24) zero-ref ld-addr-op <System.Buffers.ReadOnlySequence`1[double]>
 ;* V02 loc1 [V02 ] ( 0, 0 ) struct (16) zero-ref <System.SequencePosition>
 ;* V03 loc2 [V03 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op <System.ReadOnlyMemory`1[double]>
 ;* V04 loc3 [V04 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op <System.ReadOnlySpan`1[double]>
 ;# V05 OutArgs [V05 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V06 tmp1 [V06 ] ( 0, 0 ) struct (16) zero-ref "spilled call-like call argument" <System.ReadOnlySpan`1[double]>
-; V07 tmp2 [V07,T02] ( 4, 28 ) byref -> [rbp-0x48] spill-single-def "Inlining Arg"
+; V07 tmp2 [V07,T02] ( 4, 28 ) byref -> [rbp-0x50] spill-single-def "Inlining Arg"
 ;* V08 tmp3 [V08 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inline ldloca(s) first use temp" <System.SequencePosition>
-; V09 tmp4 [V09,T24] ( 2, 8 ) int -> rdx 
+; V09 tmp4 [V09,T24] ( 2, 8 ) int -> [rbp-0x2C] spill-single-def
 ;* V10 tmp5 [V10 ] ( 0, 0 ) int -> zero-ref 
 ; V11 tmp6 [V11,T21] ( 3, 8 ) ubyte -> registers "Inline return value spill temp"
 ; V12 tmp7 [V12,T10] ( 4, 12 ) ref -> rsi class-hnd "Inline stloc first use temp" <System.Object>
 ; V13 tmp8 [V13,T32] ( 3, 6 ) int -> rdi "Inline stloc first use temp"
 ;* V14 tmp9 [V14 ] ( 0, 0 ) ref -> zero-ref class-hnd "Inline stloc first use temp" <System.Object>
-; V15 tmp10 [V15,T01] ( 14, 28 ) int -> [rbp-0x2C] spill-single-def "Inline stloc first use temp"
+; V15 tmp10 [V15,T01] ( 14, 28 ) int -> [rbp-0x30] spill-single-def "Inline stloc first use temp"
 ; V16 tmp11 [V16,T19] ( 4, 8 ) int -> r12 "Inline stloc first use temp"
 ;* V17 tmp12 [V17 ] ( 0, 0 ) struct (16) zero-ref do-not-enreg[SR] multireg-ret "Return value temp for multireg return" <System.Memory`1[double]>
 ; V18 tmp13 [V18 ] ( 4, 8 ) struct (16) [rbp-0x40] do-not-enreg[SBR] multireg-ret must-init ld-addr-op "Inline stloc first use temp" <System.Memory`1[double]>
 ;* V19 tmp14 [V19 ] ( 0, 0 ) struct (16) zero-ref "spilled call-like call argument" <System.Memory`1[double]>
 ;* V20 tmp15 [V20 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlyMemory`1[double]>
 ; V21 tmp16 [V21,T09] ( 6, 12 ) ref -> rax class-hnd "Inline stloc first use temp" <System.Buffers.ReadOnlySequenceSegment`1[double]>
 ;* V22 tmp17 [V22 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inline stloc first use temp" <System.ReadOnlyMemory`1[double]>
 ; V23 tmp18 [V23,T30] ( 3, 6 ) ref -> rcx class-hnd "Inline stloc first use temp" <System.Buffers.ReadOnlySequenceSegment`1[double]>
 ;* V24 tmp19 [V24 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.SequencePosition>
 ;* V25 tmp20 [V25 ] ( 0, 0 ) int -> zero-ref "Inlining Arg"
 ;* V26 tmp21 [V26 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlyMemory`1[double]>
 ;* V27 tmp22 [V27 ] ( 0, 0 ) ref -> zero-ref class-hnd "Inlining Arg" <System.Object>
-; V28 tmp23 [V28,T25] ( 2, 8 ) int -> rax "Inlining Arg"
-; V29 tmp24 [V29,T26] ( 2, 8 ) int -> rdx "Inlining Arg"
+; V28 tmp23 [V28,T25] ( 2, 8 ) int -> rdi "Inlining Arg"
+; V29 tmp24 [V29,T26] ( 2, 8 ) int -> rsi "Inlining Arg"
 ; V30 tmp25 [V30,T13] ( 3, 12 ) int -> r12 "Inlining Arg"
 ;* V31 tmp26 [V31 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlyMemory`1[double]>
 ;* V32 tmp27 [V32 ] ( 0, 0 ) ref -> zero-ref class-hnd "Inlining Arg" <System.Object>
-; V33 tmp28 [V33,T27] ( 2, 8 ) int -> rcx "Inlining Arg"
-; V34 tmp29 [V34,T04] ( 4, 16 ) ref -> rdi class-hnd "Inlining Arg" <double[]>
+; V33 tmp28 [V33,T27] ( 2, 8 ) int -> rdi "Inlining Arg"
+; V34 tmp29 [V34,T04] ( 4, 16 ) ref -> r8 class-hnd "Inlining Arg" <double[]>
 ; V35 tmp30 [V35,T05] ( 4, 16 ) int -> r12 "Inlining Arg"
 ; V36 tmp31 [V36,T14] ( 3, 12 ) int -> r12 "Inlining Arg"
 ;* V37 tmp32 [V37 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.Memory`1[double]>
 ;* V38 tmp33 [V38 ] ( 0, 0 ) ref -> zero-ref class-hnd "Inlining Arg" <System.Object>
 ; V39 tmp34 [V39,T28] ( 2, 8 ) int -> r15 "Inlining Arg"
 ;* V40 tmp35 [V40 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.Memory`1[double]>
 ;* V41 tmp36 [V41 ] ( 0, 0 ) struct (16) zero-ref "Inline return value spill temp" <System.ReadOnlySpan`1[double]>
-; V42 tmp37 [V42,T51] ( 6, 3 ) byref -> r14 "Inline stloc first use temp"
-; V43 tmp38 [V43,T52] ( 6, 3 ) int -> r13 "Inline stloc first use temp"
+; V42 tmp37 [V42,T51] ( 6, 3 ) byref -> r13 "Inline stloc first use temp"
+; V43 tmp38 [V43,T52] ( 6, 3 ) int -> rax "Inline stloc first use temp"
 ;* V44 tmp39 [V44 ] ( 0, 0 ) ref -> zero-ref class-hnd single-def "Inline stloc first use temp" <System.Object>
 ;* V45 tmp40 [V45 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[double]>
 ;* V46 tmp41 [V46 ] ( 0, 0 ) ref -> zero-ref class-hnd "updating class info" <System.Buffers.MemoryManager`1[double]>
 ;* V47 tmp42 [V47 ] ( 0, 0 ) struct (16) zero-ref do-not-enreg[SBR] multireg-ret "Return value temp for multireg return" <System.Span`1[double]>
 ;* V48 tmp43 [V48 ] ( 0, 0 ) struct (16) zero-ref multireg-ret ld-addr-op "Inline stloc first use temp" <System.Span`1[double]>
-; V49 tmp44 [V49,T56] ( 3, 1.50) long -> rax "Inline stloc first use temp"
+; V49 tmp44 [V49,T56] ( 3, 1.50) long -> rcx "Inline stloc first use temp"
 ;* V50 tmp45 [V50 ] ( 0, 0 ) int -> zero-ref "Inline stloc first use temp"
 ;* V51 tmp46 [V51 ] ( 0, 0 ) ref -> zero-ref class-hnd single-def "updating class info" <double[]>
 ;* V52 tmp47 [V52 ] ( 0, 0 ) ref -> zero-ref class-hnd "updating class info" <double[]>
-; V53 tmp48 [V53,T53] ( 2, 2 ) byref -> rax single-def "Inlining Arg"
+; V53 tmp48 [V53,T53] ( 2, 2 ) byref -> rdi single-def "Inlining Arg"
 ;* V54 tmp49 [V54 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.Span`1[double]>
 ;* V55 tmp50 [V55 ] ( 0, 0 ) struct (16) zero-ref "Inlining Arg" <System.ReadOnlySpan`1[double]>
 ; V56 tmp51 [V56,T54] ( 2, 2 ) ref -> rsi single-def "field V01._startObject (fldOffset=0x0)" P-INDEP
 ; V57 tmp52 [V57,T03] ( 11, 20.50) ref -> r15 "field V01._endObject (fldOffset=0x8)" P-INDEP
 ; V58 tmp53 [V58,T35] ( 2, 6 ) int -> rdi "field V01._startInteger (fldOffset=0x10)" P-INDEP
 ; V59 tmp54 [V59,T22] ( 3, 8 ) int -> r12 "field V01._endInteger (fldOffset=0x14)" P-INDEP
 ; V60 tmp55 [V60,T23] ( 2, 8 ) ref -> r14 "field V02._object (fldOffset=0x0)" P-INDEP
 ; V61 tmp56 [V61,T29] ( 2, 8 ) int -> r13 "field V02._integer (fldOffset=0x8)" P-INDEP
-; V62 tmp57 [V62,T08] ( 11, 13 ) ref -> rdi "field V03._object (fldOffset=0x0)" P-INDEP
+; V62 tmp57 [V62,T08] ( 11, 13 ) ref -> registers "field V03._object (fldOffset=0x0)" P-INDEP
 ; V63 tmp58 [V63,T15] ( 6, 10.50) int -> r15 "field V03._index (fldOffset=0x8)" P-INDEP
-; V64 tmp59 [V64,T06] ( 8, 15 ) int -> registers "field V03._length (fldOffset=0xc)" P-INDEP
+; V64 tmp59 [V64,T06] ( 8, 15 ) int -> [rbp-0x44] "field V03._length (fldOffset=0xc)" P-INDEP
 ;* V65 tmp60 [V65 ] ( 0, 0 ) byref -> zero-ref "field V04._reference (fldOffset=0x0)" P-INDEP
 ;* V66 tmp61 [V66 ] ( 0, 0 ) int -> zero-ref "field V04._length (fldOffset=0x8)" P-INDEP
 ;* V67 tmp62 [V67 ] ( 0, 0 ) byref -> zero-ref "field V06._reference (fldOffset=0x0)" P-INDEP
 ;* V68 tmp63 [V68 ] ( 0, 0 ) int -> zero-ref "field V06._length (fldOffset=0x8)" P-INDEP
-; V69 tmp64 [V69,T17] ( 3, 10 ) ref -> [rbp-0x50] "field V08._object (fldOffset=0x0)" P-INDEP
+; V69 tmp64 [V69,T17] ( 3, 10 ) ref -> [rbp-0x58] "field V08._object (fldOffset=0x0)" P-INDEP
 ;* V70 tmp65 [V70,T36] ( 0, 0 ) int -> zero-ref "field V08._integer (fldOffset=0x8)" P-INDEP
 ; V71 tmp66 [V71,T38] ( 2, 4 ) ref -> [rbp-0x40] do-not-enreg[] "field V18._object (fldOffset=0x0)" P-DEP
 ; V72 tmp67 [V72,T43] ( 2, 4 ) int -> [rbp-0x38] do-not-enreg[] "field V18._index (fldOffset=0x8)" P-DEP
 ; V73 tmp68 [V73,T44] ( 2, 4 ) int -> [rbp-0x34] do-not-enreg[] "field V18._length (fldOffset=0xc)" P-DEP
 ;* V74 tmp69 [V74 ] ( 0, 0 ) ref -> zero-ref "field V19._object (fldOffset=0x0)" P-INDEP
 ;* V75 tmp70 [V75 ] ( 0, 0 ) int -> zero-ref "field V19._index (fldOffset=0x8)" P-INDEP
 ;* V76 tmp71 [V76 ] ( 0, 0 ) int -> zero-ref "field V19._length (fldOffset=0xc)" P-INDEP
-; V77 tmp72 [V77,T31] ( 3, 6 ) ref -> rdi "field V20._object (fldOffset=0x0)" P-INDEP
+; V77 tmp72 [V77,T31] ( 3, 6 ) ref -> r8 "field V20._object (fldOffset=0x0)" P-INDEP
 ; V78 tmp73 [V78,T33] ( 3, 6 ) int -> r15 "field V20._index (fldOffset=0x8)" P-INDEP
 ; V79 tmp74 [V79,T34] ( 3, 6 ) int -> r12 "field V20._length (fldOffset=0xc)" P-INDEP
-; V80 tmp75 [V80,T18] ( 4, 8 ) ref -> rdi "field V22._object (fldOffset=0x0)" P-INDEP
-; V81 tmp76 [V81,T20] ( 4, 8 ) int -> rcx "field V22._index (fldOffset=0x8)" P-INDEP
-; V82 tmp77 [V82,T16] ( 5, 10 ) int -> rdx "field V22._length (fldOffset=0xc)" P-INDEP
+; V80 tmp75 [V80,T18] ( 4, 8 ) ref -> r8 "field V22._object (fldOffset=0x0)" P-INDEP
+; V81 tmp76 [V81,T20] ( 4, 8 ) int -> rdi "field V22._index (fldOffset=0x8)" P-INDEP
+; V82 tmp77 [V82,T16] ( 5, 10 ) int -> rsi "field V22._length (fldOffset=0xc)" P-INDEP
 ; V83 tmp78 [V83,T39] ( 2, 4 ) ref -> rcx "field V24._object (fldOffset=0x0)" P-INDEP
 ;* V84 tmp79 [V84,T55] ( 0, 0 ) int -> zero-ref "field V24._integer (fldOffset=0x8)" P-INDEP
-; V85 tmp80 [V85,T40] ( 2, 4 ) ref -> rdi "field V26._object (fldOffset=0x0)" P-INDEP
+; V85 tmp80 [V85,T40] ( 2, 4 ) ref -> rax "field V26._object (fldOffset=0x0)" P-INDEP
 ; V86 tmp81 [V86,T45] ( 2, 4 ) int -> r15 "field V26._index (fldOffset=0x8)" P-INDEP
-; V87 tmp82 [V87,T46] ( 2, 4 ) int -> rdx "field V26._length (fldOffset=0xc)" P-INDEP
-; V88 tmp83 [V88,T41] ( 2, 4 ) ref -> rdi "field V31._object (fldOffset=0x0)" P-INDEP
+; V87 tmp82 [V87,T46] ( 2, 4 ) int -> rsi "field V26._length (fldOffset=0xc)" P-INDEP
+; V88 tmp83 [V88,T41] ( 2, 4 ) ref -> r8 "field V31._object (fldOffset=0x0)" P-INDEP
 ; V89 tmp84 [V89,T47] ( 2, 4 ) int -> r15 "field V31._index (fldOffset=0x8)" P-INDEP
 ; V90 tmp85 [V90,T48] ( 2, 4 ) int -> r12 "field V31._length (fldOffset=0xc)" P-INDEP
-; V91 tmp86 [V91,T42] ( 2, 4 ) ref -> rdi "field V37._object (fldOffset=0x0)" P-INDEP
+; V91 tmp86 [V91,T42] ( 2, 4 ) ref -> rax "field V37._object (fldOffset=0x0)" P-INDEP
 ; V92 tmp87 [V92,T49] ( 2, 4 ) int -> r15 "field V37._index (fldOffset=0x8)" P-INDEP
 ; V93 tmp88 [V93,T50] ( 2, 4 ) int -> r12 "field V37._length (fldOffset=0xc)" P-INDEP
 ;* V94 tmp89 [V94 ] ( 0, 0 ) ref -> zero-ref "field V40._object (fldOffset=0x0)" P-INDEP
 ;* V95 tmp90 [V95 ] ( 0, 0 ) int -> zero-ref "field V40._index (fldOffset=0x8)" P-INDEP
 ;* V96 tmp91 [V96 ] ( 0, 0 ) int -> zero-ref "field V40._length (fldOffset=0xc)" P-INDEP
 ;* V97 tmp92 [V97 ] ( 0, 0 ) byref -> zero-ref "field V41._reference (fldOffset=0x0)" P-INDEP
 ;* V98 tmp93 [V98 ] ( 0, 0 ) int -> zero-ref "field V41._length (fldOffset=0x8)" P-INDEP
-; V99 tmp94 [V99,T57] ( 2, 1 ) byref -> r14 single-def "field V45._reference (fldOffset=0x0)" P-INDEP
-; V100 tmp95 [V100,T59] ( 2, 1 ) int -> r13 "field V45._length (fldOffset=0x8)" P-INDEP
+; V99 tmp94 [V99,T57] ( 2, 1 ) byref -> r13 single-def "field V45._reference (fldOffset=0x0)" P-INDEP
+; V100 tmp95 [V100,T59] ( 2, 1 ) int -> rax "field V45._length (fldOffset=0x8)" P-INDEP
 ;* V101 tmp96 [V101 ] ( 0, 0 ) byref -> zero-ref "field V47._reference (fldOffset=0x0)" P-DEP
 ;* V102 tmp97 [V102 ] ( 0, 0 ) int -> zero-ref "field V47._length (fldOffset=0x8)" P-DEP
-; V103 tmp98 [V103,T58] ( 2, 1 ) byref -> r14 "field V48._reference (fldOffset=0x0)" P-INDEP
-; V104 tmp99 [V104,T60] ( 2, 1 ) int -> r13 "field V48._length (fldOffset=0x8)" P-INDEP
+; V103 tmp98 [V103,T58] ( 2, 1 ) byref -> r13 "field V48._reference (fldOffset=0x0)" P-INDEP
+; V104 tmp99 [V104,T60] ( 2, 1 ) int -> rax "field V48._length (fldOffset=0x8)" P-INDEP
 ;* V105 tmp100 [V105 ] ( 0, 0 ) byref -> zero-ref single-def "field V54._reference (fldOffset=0x0)" P-INDEP
 ;* V106 tmp101 [V106 ] ( 0, 0 ) int -> zero-ref "field V54._length (fldOffset=0x8)" P-INDEP
 ;* V107 tmp102 [V107 ] ( 0, 0 ) byref -> zero-ref "field V55._reference (fldOffset=0x0)" P-INDEP
 ;* V108 tmp103 [V108 ] ( 0, 0 ) int -> zero-ref "field V55._length (fldOffset=0x8)" P-INDEP
 ; V109 tmp104 [V109,T11] ( 3, 12 ) ref -> rax "argument with side effect"
 ; V110 cse0 [V110,T12] ( 3, 12 ) ref -> rsi "CSE #01: moderate"
-; V111 rat0 [V111,T07] ( 5, 15 ) ref -> rdi "replacement local"
-; V112 rat1 [V112,T37] ( 3, 5 ) long -> r8 "CSE for expectedClsNode"
+; V111 rat0 [V111,T07] ( 5, 15 ) ref -> r8 "replacement local"
+; V112 rat1 [V112,T37] ( 3, 5 ) long -> rdi "CSE for expectedClsNode"
 ;
-; Lcl frame size = 40
+; Lcl frame size = 56
 
 G_M42350_IG01:
 push rbp
 push r15
 push r14
 push r13
 push r12
 push rbx
- sub rsp, 40
- lea rbp, [rsp+0x50]
+ sub rsp, 56
+ lea rbp, [rsp+0x60]
 xor eax, eax
 mov qword ptr [rbp-0x40], rax
 mov rbx, rdi
 						;; size=28 bbWeight=1 PerfScore 8.25
 G_M42350_IG02:
 mov rsi, gword ptr [rbx+0x38]
 mov r15, gword ptr [rbx+0x40]
 cmp rsi, r15
- jne G_M42350_IG22
+ jne G_M42350_IG24
 						;; size=17 bbWeight=1 PerfScore 5.25
 G_M42350_IG03:
 mov byte ptr [rbx+0x14], 0
 jmp SHORT G_M42350_IG08
 						;; size=6 bbWeight=0.50 PerfScore 1.50
 G_M42350_IG04:
- xor r14, r14
- xor r13d, r13d
- test rdi, rdi
+ xor r13, r13
+ xor eax, eax
+ test r12, r12
 je SHORT G_M42350_IG07
- mov rax, qword ptr [rdi]
- test dword ptr [rax], 0xD1FFAB1E
+ mov rdi, qword ptr [r12]
+ test dword ptr [rdi], 0xD1FFAB1E
 jne SHORT G_M42350_IG05
- mov rax, qword ptr [rdi]
+ mov rdi, r12
+ mov rax, qword ptr [r12]
 mov rax, qword ptr [rax+0x40]
 call [rax+0x28]System.Buffers.MemoryManager`1[double]:GetSpan():System.Span`1[double]:this
- mov r14, rax
- mov r13d, edx
+ mov r13, rax
+ mov eax, edx
 jmp SHORT G_M42350_IG06
-						;; size=40 bbWeight=0.50 PerfScore 8.62
+						;; size=43 bbWeight=0.50 PerfScore 8.75
 G_M42350_IG05:
- lea r14, bword ptr [rdi+0x10]
- mov r13d, dword ptr [rdi+0x08]
-						;; size=8 bbWeight=0.50 PerfScore 1.25
+ lea r13, bword ptr [r12+0x10]
+ mov eax, dword ptr [r12+0x08]
+						;; size=10 bbWeight=0.50 PerfScore 1.25
 G_M42350_IG06:
 and r15d, 0xD1FFAB1E
- mov eax, r15d
- mov ecx, r12d
- add rcx, rax
- mov edx, r13d
- cmp rcx, rdx
+ mov ecx, r15d
+ mov edx, r14d
+ add rdx, rcx
+ mov eax, eax
+ cmp rdx, rax
 ja SHORT G_M42350_IG09
- lea r14, bword ptr [r14+8*rax]
- mov r13d, r12d
-						;; size=31 bbWeight=0.50 PerfScore 1.62
+ lea r13, bword ptr [r13+8*rcx]
+ mov eax, r14d
+						;; size=31 bbWeight=0.50 PerfScore 2.38
 G_M42350_IG07:
- mov bword ptr [rbx+0x50], r14
- mov dword ptr [rbx+0x58], r13d
+ mov bword ptr [rbx+0x50], r13
+ mov dword ptr [rbx+0x58], eax
 xor eax, eax
 mov dword ptr [rbx+0x10], eax
-						;; size=13 bbWeight=0.50 PerfScore 1.62
+						;; size=12 bbWeight=0.50 PerfScore 1.62
 G_M42350_IG08:
- add rsp, 40
+ add rsp, 56
 pop rbx
 pop r12
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=15 bbWeight=1 PerfScore 4.25
 G_M42350_IG09:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
 call [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 G_M42350_IG10:
- mov rdi, r15
- test rdi, rdi
+ mov r8, r15
+ test r8, r8
 je SHORT G_M42350_IG13
 						;; size=8 bbWeight=2 PerfScore 3.00
 G_M42350_IG11:
- mov r8, 0xD1FFAB1E ; double[]
- cmp qword ptr [rdi], r8
+ mov rdi, 0xD1FFAB1E ; double[]
+ cmp qword ptr [r8], rdi
 je SHORT G_M42350_IG13
 						;; size=15 bbWeight=1 PerfScore 4.25
 G_M42350_IG12:
 mov rsi, r15
- mov rdi, r8
 mov r8, 0xD1FFAB1E ; code for CORINFO_HELP_CHKCASTARRAY
 call [r8]CORINFO_HELP_CHKCASTARRAY
- mov rdi, rax
-						;; size=22 bbWeight=0.50 PerfScore 2.00
+ mov r8, rax
+ mov rax, bword ptr [rbp-0x50]
+						;; size=23 bbWeight=0.50 PerfScore 2.38
 G_M42350_IG13:
- mov edx, dword ptr [rbp-0x2C]
+ mov edx, dword ptr [rbp-0x30]
 sub r12d, edx
- test rdi, rdi
+ test r8, r8
 je SHORT G_M42350_IG14
 mov esi, edx
- mov r8d, r12d
- add rsi, r8
- mov r8d, dword ptr [rdi+0x08]
- cmp rsi, r8
+ mov edi, r12d
+ add rsi, rdi
+ mov edi, dword ptr [r8+0x08]
+ cmp rsi, rdi
 ja SHORT G_M42350_IG09
 mov r15d, edx
 jmp SHORT G_M42350_IG15
 						;; size=33 bbWeight=2 PerfScore 17.50
 G_M42350_IG14:
- mov edi, edx
- or edi, r12d
+ mov r8d, edx
+ or r8d, r12d
 jne SHORT G_M42350_IG09
- xor rdi, rdi
+ xor r8, r8
 xor r15d, r15d
 xor r12d, r12d
-						;; size=15 bbWeight=2 PerfScore 4.50
+						;; size=17 bbWeight=2 PerfScore 4.50
 G_M42350_IG15:
- mov eax, r12d
- mov r12, gword ptr [rbp-0x50]
+ mov rax, r8
+ mov ecx, r12d
+ mov r12, gword ptr [rbp-0x58]
 jmp G_M42350_IG18
-						;; size=12 bbWeight=2 PerfScore 6.50
+						;; size=15 bbWeight=2 PerfScore 7.00
 G_M42350_IG16:
 mov rdi, 0xD1FFAB1E ; System.Buffers.ReadOnlySequenceSegment`1[double]
 mov r8, 0xD1FFAB1E ; code for CORINFO_HELP_CHKCASTCLASS
 call [r8]CORINFO_HELP_CHKCASTCLASS
 cmp rax, r15
 jne SHORT G_M42350_IG17
- mov rdi, gword ptr [r15+0x18]
- mov ecx, dword ptr [r15+0x20]
- mov edx, dword ptr [r15+0x24]
- mov r15d, dword ptr [rbp-0x2C]
+ mov r8, gword ptr [r15+0x18]
+ mov edi, dword ptr [r15+0x20]
+ mov esi, dword ptr [r15+0x24]
+ mov r15d, dword ptr [rbp-0x30]
 sub r12d, r15d
 mov eax, r15d
- mov esi, r12d
- add rax, rsi
- cmp rax, rdx
- ja G_M42350_IG24
- add ecx, r15d
- mov r15d, ecx
- mov eax, r12d
- mov r12, gword ptr [rbp-0x50]
+ mov ecx, r12d
+ add rax, rcx
+ cmp rax, rsi
+ ja G_M42350_IG26
+ add edi, r15d
+ mov r15d, edi
+ mov rax, r8
+ mov ecx, r12d
+ mov r12, gword ptr [rbp-0x58]
 jmp SHORT G_M42350_IG18
-						;; size=80 bbWeight=2 PerfScore 35.50
+						;; size=83 bbWeight=2 PerfScore 36.00
 G_M42350_IG17:
 mov rcx, gword ptr [rax+0x08]
 test rcx, rcx
- je G_M42350_IG25
+ je G_M42350_IG27
 mov r12, rcx
- mov rdi, gword ptr [rax+0x18]
- mov ecx, dword ptr [rax+0x20]
- mov edx, dword ptr [rax+0x24]
- mov r15d, dword ptr [rbp-0x2C]
- cmp r15d, edx
- ja G_M42350_IG24
- lea eax, [rcx+r15]
- sub edx, r15d
- mov r15d, eax
- mov eax, edx
-						;; size=51 bbWeight=2 PerfScore 26.00
+ mov r8, gword ptr [rax+0x18]
+ mov edi, dword ptr [rax+0x20]
+ mov esi, dword ptr [rax+0x24]
+ mov r15d, dword ptr [rbp-0x30]
+ cmp r15d, esi
+ ja G_M42350_IG26
+ add edi, r15d
+ sub esi, r15d
+ mov rax, r8
+ mov r15d, edi
+ mov ecx, esi
+						;; size=53 bbWeight=2 PerfScore 26.00
 G_M42350_IG18:
- mov ecx, 1
- mov gword ptr [rbp-0x50], r12
- mov edx, ecx
- mov r12d, eax
- mov rax, bword ptr [rbp-0x48]
- jmp SHORT G_M42350_IG20
-						;; size=20 bbWeight=2 PerfScore 9.50
+ mov edx, 1
+ mov dword ptr [rbp-0x44], ecx
+ mov rcx, r12
+ mov r8d, edx
+ mov r12, rax
+ mov rax, bword ptr [rbp-0x50]
+ jmp SHORT G_M42350_IG22
+						;; size=23 bbWeight=2 PerfScore 10.00
 G_M42350_IG19:
- xor rdi, rdi
- xor r15d, r15d
- xor edx, edx
- xor r12d, r12d
-						;; size=10 bbWeight=2 PerfScore 2.00
+ mov rcx, gword ptr [rbp-0x58]
+ xor rdx, rdx
+ xor r12, r12
+						;; size=9 bbWeight=2 PerfScore 3.00
 G_M42350_IG20:
- mov rcx, gword ptr [rbp-0x50]
- mov gword ptr [rax], rcx
- xor ecx, ecx
- mov dword ptr [rax+0x08], ecx
- test dl, dl
+ xor r15d, r15d
+						;; size=3 bbWeight=2 PerfScore 0.50
+G_M42350_IG21:
+ mov dword ptr [rbp-0x44], edx
+ xor edi, edi
+ xor r8d, r8d
+						;; size=8 bbWeight=2 PerfScore 3.00
+G_M42350_IG22:
+ mov dword ptr [rbp-0x2C], r8d
+ mov rdi, rax
+ mov rsi, rcx
+ call CORINFO_HELP_CHECKED_ASSIGN_REF
+ xor edi, edi
+ mov rax, bword ptr [rbp-0x50]
+ mov dword ptr [rax+0x08], edi
+ cmp byte ptr [rbp-0x2C], 0
 je G_M42350_IG03
 mov gword ptr [rbx+0x18], r14
 mov dword ptr [rbx+0x20], r13d
- test r12d, r12d
+ mov r14d, dword ptr [rbp-0x44]
+ test r14d, r14d
 jg G_M42350_IG04
 xor edi, edi
 mov qword ptr [rbx+0x50], rdi
 mov qword ptr [rbx+0x58], rdi
-						;; size=47 bbWeight=4 PerfScore 40.00
-G_M42350_IG21:
+						;; size=65 bbWeight=4 PerfScore 57.00
+G_M42350_IG23:
 mov dword ptr [rbx+0x10], edi
 						;; size=3 bbWeight=4 PerfScore 4.00
-G_M42350_IG22:
+G_M42350_IG24:
 mov rsi, gword ptr [rbx+0x28]
 mov r14, rsi
 mov r13d, dword ptr [rbx+0x30]
 mov r15, gword ptr [rbx+0x40]
 mov edi, dword ptr [rbx+0x48]
 mov r12d, dword ptr [rbx+0x4C]
 lea rax, bword ptr [rbx+0x28]
- mov bword ptr [rbp-0x48], rax
+ mov bword ptr [rbp-0x50], rax
 xor rcx, rcx
- mov gword ptr [rbp-0x50], rcx
+ mov gword ptr [rbp-0x58], rcx
 test rsi, rsi
- je SHORT G_M42350_IG19
-						;; size=41 bbWeight=4 PerfScore 57.00
-G_M42350_IG23:
+ je G_M42350_IG19
+						;; size=45 bbWeight=4 PerfScore 57.00
+G_M42350_IG25:
 sar edi, 31
 mov edx, r12d
 sar edx, 31
 lea edi, [rdx+2*rdi]
 neg edi
 mov edx, dword ptr [rax+0x08]
- mov dword ptr [rbp-0x2C], edx
+ mov dword ptr [rbp-0x30], edx
 and r12d, 0xD1FFAB1E
 test edi, edi
 je G_M42350_IG16
+ mov rax, bword ptr [rbp-0x50]
 cmp rsi, r15
- jne SHORT G_M42350_IG25
+ jne SHORT G_M42350_IG27
 cmp edi, 1
 je G_M42350_IG10
 mov rsi, r15
 mov rdi, 0xD1FFAB1E ; System.Buffers.MemoryManager`1[double]
 mov r8, 0xD1FFAB1E ; code for CORINFO_HELP_CHKCASTCLASS
 call [r8]CORINFO_HELP_CHKCASTCLASS
 mov rdi, rax
 mov rax, qword ptr [rax]
 mov rax, qword ptr [rax+0x40]
 call [rax+0x20]System.Buffers.MemoryManager`1[double]:get_Memory():System.Memory`1[double]:this
 mov gword ptr [rbp-0x40], rax
 mov qword ptr [rbp-0x38], rdx
- mov r15d, dword ptr [rbp-0x2C]
+ mov r15d, dword ptr [rbp-0x30]
 sub r12d, r15d
 mov esi, r15d
 mov edi, r12d
 add rsi, rdi
 mov edi, dword ptr [rbp-0x34]
 cmp rsi, rdi
 ja G_M42350_IG09
 add r15d, dword ptr [rbp-0x38]
- mov rdi, gword ptr [rbp-0x40]
- mov eax, r12d
- mov r12, gword ptr [rbp-0x50]
+ mov rax, gword ptr [rbp-0x40]
+ mov ecx, r12d
+ mov r12, gword ptr [rbp-0x58]
 jmp G_M42350_IG18
-						;; size=144 bbWeight=2 PerfScore 65.00
-G_M42350_IG24:
+						;; size=148 bbWeight=2 PerfScore 67.00
+G_M42350_IG26:
 mov edi, 33
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException(int)
 call [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException(int)
 int3 
 						;; size=18 bbWeight=0.50 PerfScore 1.88
-G_M42350_IG25:
+G_M42350_IG27:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowInvalidOperationException_EndPositionNotReached()
 call [rax]System.ThrowHelper:ThrowInvalidOperationException_EndPositionNotReached()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 
-; Total bytes of code 703, prolog size 28, PerfScore 314.50, instruction count 202, allocated bytes for code 703 (MethodHash=a2155a91) for method System.Buffers.SequenceReader`1[double]:GetNextSpan():this (FullOpts)
+; Total bytes of code 757, prolog size 28, PerfScore 340.75, instruction count 215, allocated bytes for code 757 (MethodHash=a2155a91) for method System.Buffers.SequenceReader`1[double]:GetNextSpan():this (FullOpts)
 ; ============================================================

53 (51.46 % of base) - System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this

 ; Assembly listing for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rsp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 3 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
-; V00 this [V00,T02] ( 4, 4 ) ref -> rdi this class-hnd single-def <System.Text.RegularExpressions.Regex>
-; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rsi single-def
+; V00 this [V00,T02] ( 4, 4 ) ref -> [rsp+0x08] this class-hnd single-def <System.Text.RegularExpressions.Regex>
+; V01 RetBuf [V01,T00] ( 11, 11 ) byref -> rbx single-def
 ;* V02 arg1 [V02 ] ( 0, 0 ) struct (16) zero-ref multireg-arg single-def <System.ReadOnlySpan`1[ushort]>
 ;# V03 OutArgs [V03 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V04 tmp1 [V04 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
 ;* V05 tmp2 [V05 ] ( 0, 0 ) struct (16) zero-ref "impAppendStmt" <System.ReadOnlySpan`1[ushort]>
 ;* V06 tmp3 [V06 ] ( 0, 0 ) ref -> zero-ref single-def
 ;* V07 tmp4 [V07 ] ( 0, 0 ) struct (16) zero-ref <System.ReadOnlySpan`1[ushort]>
 ;* V08 tmp5 [V08 ] ( 0, 0 ) int -> zero-ref 
 ;* V09 tmp6 [V09 ] ( 0, 0 ) ref -> zero-ref single-def
 ;* V10 tmp7 [V10 ] ( 0, 0 ) struct (16) zero-ref <System.ReadOnlySpan`1[ushort]>
 ;* V11 tmp8 [V11 ] ( 0, 0 ) int -> zero-ref 
-; V12 tmp9 [V12,T05] ( 3, 3 ) int -> r8 
+; V12 tmp9 [V12,T05] ( 3, 3 ) int -> r13 
 ;* V13 tmp10 [V13 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
 ;* V14 tmp11 [V14 ] ( 0, 0 ) struct (16) zero-ref "impAppendStmt" <System.ReadOnlySpan`1[ushort]>
 ;* V15 tmp12 [V15,T08] ( 0, 0 ) struct (48) zero-ref do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Text.RegularExpressions.Regex+ValueSplitEnumerator>
 ;* V16 tmp13 [V16 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[ushort]>
-; V17 tmp14 [V17,T04] ( 2, 4 ) ubyte -> rax "Inlining Arg"
+; V17 tmp14 [V17,T04] ( 2, 4 ) ubyte -> rsi "Inlining Arg"
 ;* V18 tmp15 [V18 ] ( 0, 0 ) byref -> zero-ref 
 ;* V19 tmp16 [V19 ] ( 0, 0 ) byref -> zero-ref 
-; V20 tmp17 [V20,T07] ( 2, 2 ) int -> rax 
+; V20 tmp17 [V20,T07] ( 2, 2 ) int -> r12 
 ;* V21 tmp18 [V21 ] ( 0, 0 ) struct ( 8) zero-ref ld-addr-op "NewObj constructor temp" <System.ValueTuple`2[int,int]>
 ;* V22 tmp19 [V22 ] ( 0, 0 ) byref -> zero-ref 
 ;* V23 tmp20 [V23 ] ( 0, 0 ) byref -> zero-ref 
 ;* V24 tmp21 [V24 ] ( 0, 0 ) int -> zero-ref 
-; V25 tmp22 [V25,T03] ( 2, 2 ) byref -> rdx single-def "field V02._reference (fldOffset=0x0)" P-INDEP
-; V26 tmp23 [V26,T01] ( 5, 5 ) int -> rcx single-def "field V02._length (fldOffset=0x8)" P-INDEP
+; V25 tmp22 [V25,T03] ( 2, 2 ) byref -> r14 single-def "field V02._reference (fldOffset=0x0)" P-INDEP
+; V26 tmp23 [V26,T01] ( 5, 5 ) int -> r15 single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V27 tmp24 [V27 ] ( 0, 0 ) byref -> zero-ref single-def "field V04._reference (fldOffset=0x0)" P-INDEP
 ;* V28 tmp25 [V28 ] ( 0, 0 ) int -> zero-ref "field V04._length (fldOffset=0x8)" P-INDEP
 ;* V29 tmp26 [V29 ] ( 0, 0 ) byref -> zero-ref single-def "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V30 tmp27 [V30 ] ( 0, 0 ) int -> zero-ref "field V05._length (fldOffset=0x8)" P-INDEP
 ;* V31 tmp28 [V31 ] ( 0, 0 ) byref -> zero-ref single-def "field V07._reference (fldOffset=0x0)" P-INDEP
 ;* V32 tmp29 [V32 ] ( 0, 0 ) int -> zero-ref "field V07._length (fldOffset=0x8)" P-INDEP
 ;* V33 tmp30 [V33 ] ( 0, 0 ) byref -> zero-ref single-def "field V10._reference (fldOffset=0x0)" P-INDEP
 ;* V34 tmp31 [V34 ] ( 0, 0 ) int -> zero-ref "field V10._length (fldOffset=0x8)" P-INDEP
 ;* V35 tmp32 [V35 ] ( 0, 0 ) byref -> zero-ref single-def "field V13._reference (fldOffset=0x0)" P-INDEP
 ;* V36 tmp33 [V36 ] ( 0, 0 ) int -> zero-ref "field V13._length (fldOffset=0x8)" P-INDEP
 ;* V37 tmp34 [V37 ] ( 0, 0 ) byref -> zero-ref "field V14._reference (fldOffset=0x0)" P-INDEP
 ;* V38 tmp35 [V38 ] ( 0, 0 ) int -> zero-ref "field V14._length (fldOffset=0x8)" P-INDEP
 ;* V39 tmp36 [V39 ] ( 0, 0 ) byref -> zero-ref single-def "field V16._reference (fldOffset=0x0)" P-INDEP
 ;* V40 tmp37 [V40 ] ( 0, 0 ) int -> zero-ref "field V16._length (fldOffset=0x8)" P-INDEP
 ;* V41 tmp38 [V41 ] ( 0, 0 ) int -> zero-ref "field V21.Item1 (fldOffset=0x0)" P-INDEP
 ;* V42 tmp39 [V42 ] ( 0, 0 ) int -> zero-ref "field V21.Item2 (fldOffset=0x4)" P-INDEP
 ;* V43 tmp40 [V43 ] ( 0, 0 ) ref -> zero-ref single-def "V15.[000..008)"
 ;* V44 tmp41 [V44 ] ( 0, 0 ) int -> zero-ref "V15.[008..012)"
 ;* V45 tmp42 [V45 ] ( 0, 0 ) int -> zero-ref "V15.[012..016)"
 ;* V46 tmp43 [V46 ] ( 0, 0 ) byref -> zero-ref single-def "V15.[016..024)"
 ;* V47 tmp44 [V47 ] ( 0, 0 ) int -> zero-ref "V15.[024..028)"
 ;* V48 tmp45 [V48 ] ( 0, 0 ) int -> zero-ref "V15.[032..036)"
 ;* V49 tmp46 [V49 ] ( 0, 0 ) int -> zero-ref "V15.[036..040)"
-; V50 cse0 [V50,T06] ( 3, 3 ) int -> rax "CSE #02: aggressive"
+; V50 cse0 [V50,T06] ( 3, 3 ) int -> rsi "CSE #02: aggressive"
 ;
-; Lcl frame size = 8
+; Lcl frame size = 16
 
 G_M4189_IG01:
- push rax
-						;; size=1 bbWeight=1 PerfScore 1.00
+ push r15
+ push r14
+ push r13
+ push r12
+ push rbx
+ sub rsp, 16
+ mov rbx, rsi
+ mov r14, rdx
+ mov r15d, ecx
+						;; size=22 bbWeight=1 PerfScore 6.00
 G_M4189_IG02:
- mov eax, dword ptr [rdi+0x40]
- and eax, 64
- xor r8d, r8d
- test eax, eax
- cmovne r8d, ecx
- cmp r8d, ecx
- ja SHORT G_M4189_IG05
- test eax, eax
- setne al
- movzx rax, al
- xor r9d, r9d
- test eax, eax
- mov eax, r9d
- cmovne eax, ecx
- mov gword ptr [rsi], rdi
- mov dword ptr [rsi+0x08], r8d
- mov dword ptr [rsi+0x0C], 0xD1FFAB1E
- mov bword ptr [rsi+0x10], rdx
- mov dword ptr [rsi+0x18], ecx
- mov dword ptr [rsi+0x20], eax
- mov dword ptr [rsi+0x24], -1
-						;; size=70 bbWeight=1 PerfScore 13.75
+ mov gword ptr [rsp+0x08], rdi
+ mov esi, dword ptr [rdi+0x40]
+ and esi, 64
+ xor eax, eax
+ test esi, esi
+ mov r13d, eax
+ cmovne r13d, r15d
+ cmp r13d, r15d
+ ja SHORT G_M4189_IG04
+ test esi, esi
+ setne sil
+ movzx rsi, sil
+ xor eax, eax
+ test esi, esi
+ mov r12d, eax
+ cmovne r12d, r15d
+ mov rsi, gword ptr [rsp+0x08]
+ mov rdi, rbx
+ call CORINFO_HELP_CHECKED_ASSIGN_REF
+ mov dword ptr [rbx+0x08], r13d
+ mov dword ptr [rbx+0x0C], 0xD1FFAB1E
+ mov bword ptr [rbx+0x10], r14
+ mov dword ptr [rbx+0x18], r15d
+ mov dword ptr [rbx+0x20], r12d
+ mov dword ptr [rbx+0x24], -1
+ xor eax, eax
+ mov qword ptr [rbx+0x28], rax
+ mov rax, rbx
+						;; size=100 bbWeight=1 PerfScore 17.75
 G_M4189_IG03:
- mov qword ptr [rsi+0x28], r9
- mov rax, rsi
-						;; size=7 bbWeight=1 PerfScore 1.25
-G_M4189_IG04:
- add rsp, 8
+ add rsp, 16
+ pop rbx
+ pop r12
+ pop r13
+ pop r14
+ pop r15
 ret 
-						;; size=5 bbWeight=1 PerfScore 1.25
-G_M4189_IG05:
+						;; size=14 bbWeight=1 PerfScore 3.75
+G_M4189_IG04:
 mov edi, 14
 xor esi, esi
 mov rax, 0xD1FFAB1E ; code for System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 call [rax]System.Text.RegularExpressions.ThrowHelper:ThrowArgumentOutOfRangeException(int,int)
 int3 
 						;; size=20 bbWeight=0.50 PerfScore 2.00
 
-; Total bytes of code 103, prolog size 1, PerfScore 19.25, instruction count 31, allocated bytes for code 103 (MethodHash=5bc6efa2) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator:this (FullOpts)
+; Total bytes of code 156, prolog size 13, PerfScore 29.50, instruction count 49, allocated bytes for code 156 (MethodHash=5bc6efa2) for method System.Text.RegularExpressions.Regex:EnumerateSplits(System.ReadOnlySpan`1[ushort]):System.Text.RegularExpressions.Regex+ValueSplitEnumerator: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/4567601e05ea8aff0343c58b51d1eb51

[MihuBot]

Top method improvements

-25 (-3.92 % of base) - System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte:this

 ; Assembly listing for method System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte: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; 3 single block inlinees; 9 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T00] ( 46, 24 ) byref -> rbx this single-def
 ; V01 arg1 [V01,T03] ( 10, 6.50) byref -> r13 single-def
 ; V02 arg2 [V02,T02] ( 11, 7 ) byref -> r14 single-def
 ; V03 arg3 [V03,T01] ( 17, 9.50) byref -> r15 single-def
 ; V04 loc0 [V04,T05] ( 6, 3 ) ubyte -> rdx 
 ;* V05 loc1 [V05 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op <System.ReadOnlySpan`1[ubyte]>
 ;# V06 OutArgs [V06 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ; V07 tmp1 [V07,T06] ( 3, 3 ) int -> rax "Span.get_Item index"
 ; V08 tmp2 [V08,T07] ( 3, 3 ) int -> rax "Span.get_Item index"
 ; V09 tmp3 [V09,T10] ( 2, 1 ) ubyte -> rdi "Inline return value spill temp"
 ; V10 tmp4 [V10,T11] ( 2, 1 ) ubyte -> rax "Inline return value spill temp"
 ; V11 tmp5 [V11,T12] ( 2, 1 ) ubyte -> rdi "Inline return value spill temp"
-; V12 tmp6 [V12,T13] ( 2, 1 ) ubyte -> rdi "Inline return value spill temp"
+; V12 tmp6 [V12,T13] ( 2, 1 ) ubyte -> rcx "Inline return value spill temp"
 ; V13 tmp7 [V13,T04] ( 10, 5 ) byref -> rcx "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V14 tmp8 [V14,T08] ( 0, 0 ) int -> zero-ref "field V05._length (fldOffset=0x8)" P-INDEP
 ; V15 cse0 [V15,T09] ( 3, 1.50) int -> rdi "CSE #03: moderate"
 ;
 ; Lcl frame size = 0
 
 G_M61387_IG01:
 push rbp
 push r15
 push r14
 push r13
 push rbx
 lea rbp, [rsp+0x20]
 mov rbx, rdi
 mov r13, rsi
 mov r14, rdx
 mov r15, rcx
 						;; size=25 bbWeight=1 PerfScore 6.50
 G_M61387_IG02:
 mov edi, dword ptr [r14]
 cmp edi, dword ptr [r13+0x08]
 jl SHORT G_M61387_IG06
 						;; size=9 bbWeight=1 PerfScore 6.00
 G_M61387_IG03:
 cmp byte ptr [rbx+0x24], 0
 je SHORT G_M61387_IG04
 cmp byte ptr [rbx+0x2B], 0
- je G_M61387_IG21
+ je G_M61387_IG29
 movzx rdi, byte ptr [rbx+0x2A]
 test edi, edi
- jne G_M61387_IG21
+ jne G_M61387_IG29
 						;; size=29 bbWeight=0.50 PerfScore 5.62
 G_M61387_IG04:
 mov rdi, rbx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 call [rax]System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 test eax, eax
- je G_M61387_IG17
+ je G_M61387_IG23
 movsxd rdi, dword ptr [r14]
 add qword ptr [rbx+0x10], rdi
 mov byte ptr [rbx+0x2D], 1
 xor edi, edi
 mov dword ptr [r14], edi
 						;; size=39 bbWeight=0.50 PerfScore 7.00
 G_M61387_IG05:
 vmovdqu xmm0, xmmword ptr [rbx+0x30]
 vmovdqu xmmword ptr [r13], xmm0
 						;; size=11 bbWeight=0.50 PerfScore 3.00
 G_M61387_IG06:
 mov edi, dword ptr [r14]
 mov eax, edi
 cmp eax, dword ptr [r13+0x08]
- jae G_M61387_IG22
+ jae G_M61387_IG32
 mov rcx, bword ptr [r13]
 movzx rdx, byte ptr [rcx+rax]
 cmp edx, 43
 je SHORT G_M61387_IG07
 cmp edx, 45
 jne SHORT G_M61387_IG11
 						;; size=33 bbWeight=0.50 PerfScore 6.38
 G_M61387_IG07:
 inc edi
 mov dword ptr [r14], edi
 inc qword ptr [rbx+0x08]
 mov edi, dword ptr [r14]
 cmp edi, dword ptr [r13+0x08]
 jl SHORT G_M61387_IG10
 cmp byte ptr [rbx+0x24], 0
 je SHORT G_M61387_IG08
 cmp byte ptr [rbx+0x2B], 0
- je G_M61387_IG16
+ je G_M61387_IG20
 movzx rdi, byte ptr [rbx+0x2A]
 test edi, edi
- jne G_M61387_IG16
+ jne G_M61387_IG20
 						;; size=47 bbWeight=0.50 PerfScore 10.75
 G_M61387_IG08:
 mov rdi, rbx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 call [rax]System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 test eax, eax
- je G_M61387_IG14
+ je SHORT G_M61387_IG16
 movsxd rax, dword ptr [r14]
 add qword ptr [rbx+0x10], rax
 mov byte ptr [rbx+0x2D], 1
 xor eax, eax
 mov dword ptr [r14], eax
-						;; size=39 bbWeight=0.50 PerfScore 7.00
+						;; size=35 bbWeight=0.50 PerfScore 7.00
 G_M61387_IG09:
 vmovdqu xmm0, xmmword ptr [rbx+0x30]
 vmovdqu xmmword ptr [r13], xmm0
 						;; size=11 bbWeight=0.50 PerfScore 3.00
 G_M61387_IG10:
 mov eax, dword ptr [r14]
 cmp eax, dword ptr [r13+0x08]
- jae G_M61387_IG22
- mov rdi, bword ptr [r13]
- movzx rdx, byte ptr [rdi+rax]
+ jae G_M61387_IG32
+ mov rcx, bword ptr [r13]
+ movzx rdx, byte ptr [rcx+rax]
 						;; size=21 bbWeight=0.50 PerfScore 5.00
 G_M61387_IG11:
 lea eax, [rdx-0x30]
 cmp eax, 9
 ja SHORT G_M61387_IG13
 mov eax, 1
 						;; size=13 bbWeight=0.50 PerfScore 1.00
 G_M61387_IG12:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=0.50 PerfScore 1.75
 G_M61387_IG13:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG14:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG15:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 4
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=55 bbWeight=0.50 PerfScore 6.75
-G_M61387_IG14:
- cmp byte ptr [rbx+0x24], 0
- je G_M61387_IG18
- cmp byte ptr [rbx+0x2B], 0
- je SHORT G_M61387_IG15
- movzx rdi, byte ptr [rbx+0x2A]
- test edi, edi
- je G_M61387_IG18
-						;; size=29 bbWeight=0.50 PerfScore 5.62
-G_M61387_IG15:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
- xor rcx, rcx
- xor r8d, r8d
- mov rdi, rbx
- mov esi, 5
- xor edx, edx
- mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
+						;; size=26 bbWeight=0.50 PerfScore 2.25
 G_M61387_IG16:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+ cmp byte ptr [rbx+0x24], 0
+ je G_M61387_IG24
+ cmp byte ptr [rbx+0x2B], 0
+ je SHORT G_M61387_IG17
+ movzx rcx, byte ptr [rbx+0x2A]
+ test ecx, ecx
+ je G_M61387_IG24
+						;; size=28 bbWeight=0.50 PerfScore 5.62
+G_M61387_IG17:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG18:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG19:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 5
 xor edx, edx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
-G_M61387_IG17:
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M61387_IG20:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG21:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG22:
+ xor rcx, rcx
+ xor r8d, r8d
+ mov rdi, rbx
+ mov esi, 5
+ xor edx, edx
+ mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ int3 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M61387_IG23:
 cmp byte ptr [rbx+0x24], 0
- je SHORT G_M61387_IG18
+ je SHORT G_M61387_IG24
 cmp byte ptr [rbx+0x2B], 0
- je SHORT G_M61387_IG20
+ je SHORT G_M61387_IG26
 movzx rax, byte ptr [rbx+0x2A]
 test eax, eax
- jne SHORT G_M61387_IG20
+ jne SHORT G_M61387_IG26
 						;; size=20 bbWeight=0.50 PerfScore 5.62
-G_M61387_IG18:
+G_M61387_IG24:
 mov eax, 2
 						;; size=5 bbWeight=0.50 PerfScore 0.12
-G_M61387_IG19:
+G_M61387_IG25:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=0.50 PerfScore 1.75
-G_M61387_IG20:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+G_M61387_IG26:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG27:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG28:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 5
 xor edx, edx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
-G_M61387_IG21:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M61387_IG29:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG30:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M61387_IG31:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 5
 xor edx, edx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
-G_M61387_IG22:
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M61387_IG32:
 call CORINFO_HELP_RNGCHKFAIL
 int3 
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 638, prolog size 13, PerfScore 110.38, instruction count 184, allocated bytes for code 638 (MethodHash=64fa1034) for method System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
+; Total bytes of code 613, prolog size 13, PerfScore 117.88, instruction count 174, allocated bytes for code 613 (MethodHash=64fa1034) for method System.Text.Json.Utf8JsonReader:ConsumeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 ; ============================================================

-20 (-5.01 % of base) - System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte:this

 ; Assembly listing for method System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte: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; 2 single block inlinees; 5 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T00] ( 27, 14.50) byref -> rbx this single-def
 ; V01 arg1 [V01,T03] ( 8, 6 ) byref -> r13 single-def
 ; V02 arg2 [V02,T02] ( 9, 6 ) byref -> r14 single-def
 ; V03 arg3 [V03,T01] ( 11, 6.50) byref -> r15 single-def
 ; V04 loc0 [V04,T07] ( 3, 1.50) ubyte -> rdx 
 ;* V05 loc1 [V05 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op <System.ReadOnlySpan`1[ubyte]>
 ;# V06 OutArgs [V06 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ; V07 tmp1 [V07,T04] ( 3, 6 ) int -> rdi "Span.get_Item index"
 ; V08 tmp2 [V08,T06] ( 3, 3 ) int -> rax "Span.get_Item index"
 ; V09 tmp3 [V09,T09] ( 2, 1 ) ubyte -> rdi "Inline return value spill temp"
 ; V10 tmp4 [V10,T10] ( 2, 1 ) ubyte -> rax "Inline return value spill temp"
 ; V11 tmp5 [V11,T05] ( 6, 3 ) byref -> rcx "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V12 tmp6 [V12,T08] ( 0, 0 ) int -> zero-ref "field V05._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 0
 
 G_M28488_IG01:
 push rbp
 push r15
 push r14
 push r13
 push rbx
 lea rbp, [rsp+0x20]
 mov rbx, rdi
 mov r13, rsi
 mov r14, rdx
 mov r15, rcx
 						;; size=25 bbWeight=1 PerfScore 6.50
 G_M28488_IG02:
 mov edi, dword ptr [r14]
 cmp edi, dword ptr [r13+0x08]
- jae G_M28488_IG15
+ jae G_M28488_IG21
 mov rax, bword ptr [r13]
 cmp byte ptr [rax+rdi], 45
- jne G_M28488_IG07
-						;; size=27 bbWeight=1 PerfScore 12.00
+ jne SHORT G_M28488_IG07
+						;; size=23 bbWeight=1 PerfScore 12.00
 G_M28488_IG03:
 inc dword ptr [r14]
 inc qword ptr [rbx+0x08]
 mov edi, dword ptr [r14]
 cmp edi, dword ptr [r13+0x08]
 jl SHORT G_M28488_IG06
 cmp byte ptr [rbx+0x24], 0
 je SHORT G_M28488_IG04
 cmp byte ptr [rbx+0x2B], 0
- je G_M28488_IG14
+ je G_M28488_IG18
 movzx rdi, byte ptr [rbx+0x2A]
 test edi, edi
- jne G_M28488_IG14
+ jne G_M28488_IG18
 						;; size=45 bbWeight=0.50 PerfScore 11.62
 G_M28488_IG04:
 mov rdi, rbx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 call [rax]System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 test eax, eax
- je G_M28488_IG10
+ je SHORT G_M28488_IG12
 movsxd rax, dword ptr [r14]
 add qword ptr [rbx+0x10], rax
 mov byte ptr [rbx+0x2D], 1
 xor eax, eax
 mov dword ptr [r14], eax
-						;; size=39 bbWeight=0.50 PerfScore 7.00
+						;; size=35 bbWeight=0.50 PerfScore 7.00
 G_M28488_IG05:
 vmovdqu xmm0, xmmword ptr [rbx+0x30]
 vmovdqu xmmword ptr [r13], xmm0
 						;; size=11 bbWeight=0.50 PerfScore 3.00
 G_M28488_IG06:
 mov eax, dword ptr [r14]
 cmp eax, dword ptr [r13+0x08]
- jae G_M28488_IG15
- mov rdi, bword ptr [r13]
- movzx rdx, byte ptr [rdi+rax]
+ jae G_M28488_IG21
+ mov rcx, bword ptr [r13]
+ movzx rdx, byte ptr [rcx+rax]
 lea eax, [rdx-0x30]
 cmp eax, 9
 ja SHORT G_M28488_IG09
 						;; size=29 bbWeight=0.50 PerfScore 5.88
 G_M28488_IG07:
 mov eax, 1
 						;; size=5 bbWeight=0.50 PerfScore 0.12
 G_M28488_IG08:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=0.50 PerfScore 1.75
 G_M28488_IG09:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG10:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG11:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 4
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=55 bbWeight=0.50 PerfScore 6.75
-G_M28488_IG10:
+						;; size=26 bbWeight=0.50 PerfScore 2.25
+G_M28488_IG12:
 cmp byte ptr [rbx+0x24], 0
- je SHORT G_M28488_IG11
- cmp byte ptr [rbx+0x2B], 0
 je SHORT G_M28488_IG13
+ cmp byte ptr [rbx+0x2B], 0
+ je SHORT G_M28488_IG15
 movzx rax, byte ptr [rbx+0x2A]
 test eax, eax
- jne SHORT G_M28488_IG13
+ jne SHORT G_M28488_IG15
 						;; size=20 bbWeight=0.50 PerfScore 5.62
-G_M28488_IG11:
+G_M28488_IG13:
 mov eax, 2
 						;; size=5 bbWeight=0.50 PerfScore 0.12
-G_M28488_IG12:
+G_M28488_IG14:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=0.50 PerfScore 1.75
-G_M28488_IG13:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
- xor rcx, rcx
- xor r8d, r8d
- mov rdi, rbx
- mov esi, 5
- xor edx, edx
- mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
-G_M28488_IG14:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
- xor rcx, rcx
- xor r8d, r8d
- mov rdi, rbx
- mov esi, 5
- xor edx, edx
- mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
 G_M28488_IG15:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG16:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG17:
+ xor rcx, rcx
+ xor r8d, r8d
+ mov rdi, rbx
+ mov esi, 5
+ xor edx, edx
+ mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ int3 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M28488_IG18:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG19:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M28488_IG20:
+ xor rcx, rcx
+ xor r8d, r8d
+ mov rdi, rbx
+ mov esi, 5
+ xor edx, edx
+ mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ int3 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M28488_IG21:
 call CORINFO_HELP_RNGCHKFAIL
 int3 
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 399, prolog size 13, PerfScore 75.88, instruction count 118, allocated bytes for code 399 (MethodHash=2b9c90b7) for method System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
+; Total bytes of code 379, prolog size 13, PerfScore 80.38, instruction count 112, allocated bytes for code 379 (MethodHash=2b9c90b7) for method System.Text.Json.Utf8JsonReader:ConsumeNegativeSignMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 ; ============================================================

-12 (-3.06 % of base) - System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte:this

 ; Assembly listing for method System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte: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; 2 single block inlinees; 5 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T00] ( 28, 15 ) byref -> rbx this single-def
 ; V01 arg1 [V01,T03] ( 7, 5 ) byref -> r13 single-def
 ; V02 arg2 [V02,T02] ( 8, 5.50) byref -> r14 single-def
 ; V03 arg3 [V03,T01] ( 11, 6.50) byref -> r15 single-def
 ; V04 loc0 [V04,T06] ( 3, 1.50) ubyte -> rdx 
 ;* V05 loc1 [V05 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op <System.ReadOnlySpan`1[ubyte]>
 ;# V06 OutArgs [V06 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ; V07 tmp1 [V07,T05] ( 3, 3 ) int -> rsi "Span.get_Item index"
 ; V08 tmp2 [V08,T09] ( 2, 1 ) ubyte -> rdi "Inline return value spill temp"
 ; V09 tmp3 [V09,T10] ( 2, 1 ) ubyte -> rax "Inline return value spill temp"
 ; V10 tmp4 [V10,T04] ( 6, 3 ) byref -> rcx "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V11 tmp5 [V11,T07] ( 0, 0 ) int -> zero-ref "field V05._length (fldOffset=0x8)" P-INDEP
 ; V12 cse0 [V12,T08] ( 3, 1.50) int -> rdi "CSE #03: moderate"
 ;
 ; Lcl frame size = 0
 
 G_M49655_IG01:
 push rbp
 push r15
 push r14
 push r13
 push rbx
 lea rbp, [rsp+0x20]
 mov rbx, rdi
 mov r13, rsi
 mov r14, rdx
 mov r15, rcx
 						;; size=25 bbWeight=1 PerfScore 6.50
 G_M49655_IG02:
 mov edi, dword ptr [r14]
 cmp edi, dword ptr [r13+0x08]
 jl SHORT G_M49655_IG06
 						;; size=9 bbWeight=1 PerfScore 6.00
 G_M49655_IG03:
 cmp byte ptr [rbx+0x24], 0
 je SHORT G_M49655_IG04
 cmp byte ptr [rbx+0x2B], 0
- je G_M49655_IG13
+ je G_M49655_IG17
 movzx rdi, byte ptr [rbx+0x2A]
 test edi, edi
- jne G_M49655_IG13
+ jne G_M49655_IG17
 						;; size=29 bbWeight=0.50 PerfScore 5.62
 G_M49655_IG04:
 mov rdi, rbx
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 call [rax]System.Text.Json.Utf8JsonReader:GetNextSpan():ubyte:this
 test eax, eax
- je G_M49655_IG09
+ je G_M49655_IG11
 movsxd rdi, dword ptr [r14]
 add qword ptr [rbx+0x10], rdi
 mov byte ptr [rbx+0x2D], 1
 xor edi, edi
 mov dword ptr [r14], edi
 						;; size=39 bbWeight=0.50 PerfScore 7.00
 G_M49655_IG05:
 vmovdqu xmm0, xmmword ptr [rbx+0x30]
 vmovdqu xmmword ptr [r13], xmm0
 						;; size=11 bbWeight=0.50 PerfScore 3.00
 G_M49655_IG06:
 mov edi, dword ptr [r14]
 mov esi, edi
 cmp esi, dword ptr [r13+0x08]
- jae G_M49655_IG14
+ jae G_M49655_IG20
 mov rdx, bword ptr [r13]
 movzx rdx, byte ptr [rdx+rsi]
 lea esi, [rdx-0x30]
 cmp esi, 9
 ja SHORT G_M49655_IG08
 inc edi
 mov dword ptr [r14], edi
 inc qword ptr [rbx+0x08]
 mov rdi, rbx
 mov rsi, r13
 mov rdx, r14
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.Utf8JsonReader:ConsumeIntegerDigitsMultiSegment(byref,byref):ubyte:this
 						;; size=59 bbWeight=0.50 PerfScore 8.62
 G_M49655_IG07:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 tail.jmp [rax]System.Text.Json.Utf8JsonReader:ConsumeIntegerDigitsMultiSegment(byref,byref):ubyte:this
 						;; size=11 bbWeight=0.50 PerfScore 2.25
 G_M49655_IG08:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG09:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG10:
 xor rcx, rcx
 xor r8d, r8d
 mov rdi, rbx
 mov esi, 3
 mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
 int3 
-						;; size=55 bbWeight=0.50 PerfScore 6.75
-G_M49655_IG09:
+						;; size=26 bbWeight=0.50 PerfScore 2.25
+G_M49655_IG11:
 cmp byte ptr [rbx+0x24], 0
- je SHORT G_M49655_IG10
- cmp byte ptr [rbx+0x2B], 0
 je SHORT G_M49655_IG12
+ cmp byte ptr [rbx+0x2B], 0
+ je SHORT G_M49655_IG14
 movzx rax, byte ptr [rbx+0x2A]
 test eax, eax
- jne SHORT G_M49655_IG12
+ jne SHORT G_M49655_IG14
 						;; size=20 bbWeight=0.50 PerfScore 5.62
-G_M49655_IG10:
+G_M49655_IG12:
 mov eax, 2
 						;; size=5 bbWeight=0.50 PerfScore 0.12
-G_M49655_IG11:
+G_M49655_IG13:
 pop rbx
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=0.50 PerfScore 1.75
-G_M49655_IG12:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
- xor rcx, rcx
- xor r8d, r8d
- mov rdi, rbx
- mov esi, 5
- xor edx, edx
- mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
-G_M49655_IG13:
- mov rdi, qword ptr [r15]
- mov qword ptr [rbx+0x10], rdi
- mov edi, dword ptr [r15+0x10]
- mov dword ptr [rbx+0x20], edi
- lea rsi, bword ptr [r15+0x18]
- lea rdi, bword ptr [rbx+0x70]
- call CORINFO_HELP_ASSIGN_BYREF
- movsq 
- xor rcx, rcx
- xor r8d, r8d
- mov rdi, rbx
- mov esi, 5
- xor edx, edx
- mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
- int3 
-						;; size=57 bbWeight=0.50 PerfScore 6.88
 G_M49655_IG14:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG15:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG16:
+ xor rcx, rcx
+ xor r8d, r8d
+ mov rdi, rbx
+ mov esi, 5
+ xor edx, edx
+ mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ int3 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M49655_IG17:
+ mov rcx, qword ptr [r15]
+ mov qword ptr [rbx+0x10], rcx
+ mov ecx, dword ptr [r15+0x10]
+ mov dword ptr [rbx+0x20], ecx
+						;; size=14 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG18:
+ vmovdqu xmm0, xmmword ptr [r15+0x18]
+ vmovdqu xmmword ptr [rbx+0x70], xmm0
+						;; size=11 bbWeight=0.50 PerfScore 3.00
+G_M49655_IG19:
+ xor rcx, rcx
+ xor r8d, r8d
+ mov rdi, rbx
+ mov esi, 5
+ xor edx, edx
+ mov rax, 0xD1FFAB1E ; code for System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ call [rax]System.Text.Json.ThrowHelper:ThrowJsonReaderException(byref,int,ubyte,System.ReadOnlySpan`1[ubyte])
+ int3 
+						;; size=28 bbWeight=0.50 PerfScore 2.38
+G_M49655_IG20:
 call CORINFO_HELP_RNGCHKFAIL
 int3 
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 392, prolog size 25, PerfScore 67.00, instruction count 117, allocated bytes for code 392 (MethodHash=27983e08) for method System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
+; Total bytes of code 380, prolog size 25, PerfScore 71.50, instruction count 111, allocated bytes for code 380 (MethodHash=27983e08) for method System.Text.Json.Utf8JsonReader:ConsumeDecimalDigitsMultiSegment(byref,byref,byref):ubyte:this (FullOpts)
 ; ============================================================

-5 (-3.21 % of base) - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this

 ; Assembly listing for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):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; 1 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T05] ( 4, 4 ) byref -> rbx this single-def
 ; V01 arg1 [V01,T06] ( 3, 3 ) byref -> r15 single-def
 ;* V02 arg2 [V02 ] ( 0, 0 ) struct (16) zero-ref multireg-arg single-def <System.ReadOnlySpan`1[long]>
 ;* V03 arg3 [V03 ] ( 0, 0 ) struct (16) zero-ref multireg-arg single-def <System.ReadOnlySpan`1[long]>
 ; V04 arg4 [V04,T11] ( 1, 1 ) long -> [rbp+0x10] single-def
 ;# V05 OutArgs [V05 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ; V06 tmp1 [V06 ] ( 2, 4 ) struct (104) [rbp-0x78] do-not-enreg[XS] must-init addr-exposed ld-addr-op "NewObj constructor temp" <System.Numerics.Tensors.TensorShape>
 ;* V07 tmp2 [V07 ] ( 0, 0 ) long -> zero-ref "Inline return value spill temp"
 ;* V08 tmp3 [V08 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[long]>
 ; V09 tmp4 [V09,T04] ( 4, 8.75) long -> rdi "Inline stloc first use temp"
 ;* V10 tmp5 [V10,T12] ( 0, 0 ) int -> zero-ref "Inline stloc first use temp"
 ; V11 tmp6 [V11,T02] ( 3, 6 ) byref -> rdx single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ; V12 tmp7 [V12,T03] ( 4, 7 ) int -> rcx single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ; V13 tmp8 [V13,T07] ( 2, 2 ) byref -> r8 single-def "field V03._reference (fldOffset=0x0)" P-INDEP
 ; V14 tmp9 [V14,T08] ( 2, 2 ) int -> r9 single-def "field V03._length (fldOffset=0x8)" P-INDEP
 ;* V15 tmp10 [V15,T10] ( 0, 0 ) byref -> zero-ref single-def "field V08._reference (fldOffset=0x0)" P-INDEP
 ; V16 tmp11 [V16,T09] ( 2, 2 ) int -> rdi "field V08._length (fldOffset=0x8)" P-INDEP
 ; V17 cse0 [V17,T01] ( 3, 12 ) long -> rax "CSE #03: aggressive"
 ; V18 rat0 [V18,T00] ( 5, 16.25) long -> rsi "Widened IV V10"
 ;
 ; Lcl frame size = 112
 
 G_M38717_IG01:
 push rbp
 push r15
 push rbx
 sub rsp, 112
 lea rbp, [rsp+0x80]
 xor eax, eax
 mov qword ptr [rbp-0x78], rax
 vxorps xmm8, xmm8, xmm8
 vmovdqu32 zmmword ptr [rbp-0x70], zmm8
 vmovdqa xmmword ptr [rbp-0x30], xmm8
 vmovdqa xmmword ptr [rbp-0x20], xmm8
 mov rbx, rdi
 mov r15, rsi
 						;; size=53 bbWeight=1 PerfScore 11.83
 G_M38717_IG02:
 mov edi, ecx
 test edi, edi
 je SHORT G_M38717_IG06
 						;; size=6 bbWeight=1 PerfScore 1.50
 G_M38717_IG03:
 mov edi, 1
 xor esi, esi
 align [0 bytes for IG04]
 						;; size=7 bbWeight=0.25 PerfScore 0.12
 G_M38717_IG04:
 mov rax, qword ptr [rdx+8*rsi]
 test rax, rax
 jl SHORT G_M38717_IG08
 imul rdi, rax
 inc esi
 cmp esi, ecx
 jl SHORT G_M38717_IG04
 						;; size=19 bbWeight=4 PerfScore 27.00
 G_M38717_IG05:
 test rdi, rdi
 jl SHORT G_M38717_IG08
 						;; size=5 bbWeight=0.50 PerfScore 0.62
 G_M38717_IG06:
 lea rdi, [rbp-0x78]
 mov rsi, qword ptr [rbp+0x10]
 mov rax, 0xD1FFAB1E ; code for System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 call [rax]System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 lea rdi, bword ptr [rbx+0x08]
 lea rsi, bword ptr [rbp-0x78]
- call CORINFO_HELP_ASSIGN_BYREF
- mov ecx, 12
+ mov ecx, 13
 rep movsq 
 mov bword ptr [rbx], r15
-						;; size=44 bbWeight=1 PerfScore 33.00
+						;; size=39 bbWeight=1 PerfScore 32.00
 G_M38717_IG07:
 add rsp, 112
 pop rbx
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=1 PerfScore 2.75
 G_M38717_IG08:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
 call [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 
-; Total bytes of code 156, prolog size 53, PerfScore 78.58, instruction count 46, allocated bytes for code 156 (MethodHash=04f268c2) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
+; Total bytes of code 151, prolog size 53, PerfScore 77.58, instruction count 45, allocated bytes for code 151 (MethodHash=04f268c2) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
 ; ============================================================

-5 (-0.98 % of base) - System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this

 ; Assembly listing for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):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; 6 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T12] ( 5, 3.50) byref -> [rbp-0xA8] this single-def
 ; V01 arg1 [V01,T08] ( 7, 5 ) ref -> r14 class-hnd single-def <double[]>
 ; V02 arg2 [V02,T11] ( 6, 4 ) int -> [rbp-0x2C] single-def
 ;* V03 arg3 [V03 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[long]>
 ;* V04 arg4 [V04 ] ( 0, 0 ) struct (16) zero-ref multireg-arg ld-addr-op single-def <System.ReadOnlySpan`1[long]>
 ;* V05 loc0 [V05 ] ( 0, 0 ) long -> zero-ref single-def
 ;* V06 loc1 [V06 ] ( 0, 0 ) long -> zero-ref single-def
 ; V07 loc2 [V07 ] ( 2, 1 ) long -> [rbp-0x38] do-not-enreg[X] must-init addr-exposed ld-addr-op
 ;# V08 OutArgs [V08 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V09 tmp1 [V09 ] ( 0, 0 ) struct (16) zero-ref multireg-arg <System.ReadOnlySpan`1[long]>
 ; V10 tmp2 [V10 ] ( 2, 2 ) struct (104) [rbp-0xA0] do-not-enreg[XS] must-init addr-exposed ld-addr-op "NewObj constructor temp" <System.Numerics.Tensors.TensorShape>
 ;* V11 tmp3 [V11 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[long]>
 ; V12 tmp4 [V12,T15] ( 4, 2 ) long -> rdx "Inline return value spill temp"
 ;* V13 tmp5 [V13 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[long]>
 ; V14 tmp6 [V14,T06] ( 5, 9.25) long -> rdi "Inline stloc first use temp"
 ;* V15 tmp7 [V15,T28] ( 0, 0 ) int -> zero-ref "Inline stloc first use temp"
 ; V16 tmp8 [V16,T13] ( 4, 4 ) ref -> rax class-hnd single-def "Inlining Arg" <long[]>
 ;* V17 tmp9 [V17 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[long]>
 ; V18 tmp10 [V18,T07] ( 4, 9 ) long -> rsi "Inline stloc first use temp"
 ; V19 tmp11 [V19,T00] ( 6, 20.50) int -> rdx "Inline stloc first use temp"
 ;* V20 tmp12 [V20 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[long]>
 ;* V21 tmp13 [V21 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[long]>
 ; V22 tmp14 [V22,T03] ( 7, 11 ) byref -> r15 "field V03._reference (fldOffset=0x0)" P-INDEP
 ; V23 tmp15 [V23,T02] ( 10, 13.50) int -> rbx "field V03._length (fldOffset=0x8)" P-INDEP
 ; V24 tmp16 [V24,T10] ( 5, 6 ) byref -> r12 "field V04._reference (fldOffset=0x0)" P-INDEP
 ; V25 tmp17 [V25,T09] ( 6, 6.50) int -> r13 "field V04._length (fldOffset=0x8)" P-INDEP
 ; V26 tmp18 [V26,T17] ( 3, 1.50) byref -> rdi "field V09._reference (fldOffset=0x0)" P-INDEP
 ; V27 tmp19 [V27,T19] ( 3, 1.50) int -> rsi "field V09._length (fldOffset=0x8)" P-INDEP
 ;* V28 tmp20 [V28,T22] ( 0, 0 ) byref -> zero-ref single-def "field V11._reference (fldOffset=0x0)" P-INDEP
 ;* V29 tmp21 [V29,T25] ( 0, 0 ) int -> zero-ref single-def "field V11._length (fldOffset=0x8)" P-INDEP
 ;* V30 tmp22 [V30,T21] ( 0, 0 ) byref -> zero-ref single-def "field V13._reference (fldOffset=0x0)" P-INDEP
 ; V31 tmp23 [V31,T16] ( 2, 2 ) int -> rdi single-def "field V13._length (fldOffset=0x8)" P-INDEP
 ; V32 tmp24 [V32,T18] ( 3, 1.50) byref -> rdi "field V17._reference (fldOffset=0x0)" P-INDEP
 ; V33 tmp25 [V33,T20] ( 3, 1.50) int -> rsi "field V17._length (fldOffset=0x8)" P-INDEP
 ;* V34 tmp26 [V34,T23] ( 0, 0 ) byref -> zero-ref single-def "field V20._reference (fldOffset=0x0)" P-INDEP
 ;* V35 tmp27 [V35,T26] ( 0, 0 ) int -> zero-ref single-def "field V20._length (fldOffset=0x8)" P-INDEP
 ;* V36 tmp28 [V36,T24] ( 0, 0 ) byref -> zero-ref single-def "field V21._reference (fldOffset=0x0)" P-INDEP
 ;* V37 tmp29 [V37,T27] ( 0, 0 ) int -> zero-ref single-def "field V21._length (fldOffset=0x8)" P-INDEP
 ; V38 cse0 [V38,T04] ( 3, 12 ) long -> rdx "CSE #03: aggressive"
 ; V39 cse1 [V39,T14] ( 6, 3 ) int -> r8 multi-def "CSE #05: moderate"
 ; V40 cse2 [V40,T05] ( 3, 12 ) long -> rcx "CSE #04: aggressive"
 ; V41 rat0 [V41,T01] ( 5, 16.25) long -> rsi "Widened IV V15"
 ;
 ; Lcl frame size = 136
 
 G_M63805_IG01:
 push rbp
 push r15
 push r14
 push r13
 push r12
 push rbx
 sub rsp, 136
 lea rbp, [rsp+0xB0]
 vxorps xmm8, xmm8, xmm8
 vmovdqu32 zmmword ptr [rbp-0xA0], zmm8
 vmovdqa xmmword ptr [rbp-0x60], xmm8
 vmovdqa xmmword ptr [rbp-0x50], xmm8
 vmovdqa xmmword ptr [rbp-0x40], xmm8
 mov bword ptr [rbp-0xA8], rdi
 mov dword ptr [rbp-0x2C], edx
 mov r14, rsi
 mov r15, rcx
 mov ebx, r8d
 mov r12, bword ptr [rbp+0x10]
 mov r13d, dword ptr [rbp+0x18]
 						;; size=82 bbWeight=1 PerfScore 19.83
 G_M63805_IG02:
 test ebx, ebx
 jne SHORT G_M63805_IG04
 						;; size=4 bbWeight=1 PerfScore 1.25
 G_M63805_IG03:
 test r14, r14
 je SHORT G_M63805_IG04
 mov r8d, dword ptr [r14+0x08]
 mov edi, r8d
 mov qword ptr [rbp-0x38], rdi
 lea r15, bword ptr [rbp-0x38]
 mov ebx, 1
 						;; size=25 bbWeight=0.50 PerfScore 2.62
 G_M63805_IG04:
 mov edi, ebx
 test edi, edi
 je SHORT G_M63805_IG08
 						;; size=6 bbWeight=1 PerfScore 1.50
 G_M63805_IG05:
 mov edi, 1
 xor esi, esi
 align [4 bytes for IG06]
 						;; size=11 bbWeight=0.25 PerfScore 0.19
 G_M63805_IG06:
 mov rdx, qword ptr [r15+8*rsi]
 test rdx, rdx
 jl G_M63805_IG21
 imul rdi, rdx
 inc esi
 cmp esi, ebx
 jl SHORT G_M63805_IG06
 						;; size=23 bbWeight=4 PerfScore 27.00
 G_M63805_IG07:
 test rdi, rdi
 jl G_M63805_IG21
 mov rdx, rdi
 jmp SHORT G_M63805_IG09
 align [0 bytes for IG15]
 						;; size=14 bbWeight=0.50 PerfScore 1.75
 G_M63805_IG08:
 xor edx, edx
 						;; size=2 bbWeight=0.50 PerfScore 0.12
 G_M63805_IG09:
 test r14, r14
 je G_M63805_IG19
 						;; size=9 bbWeight=1 PerfScore 1.25
 G_M63805_IG10:
 test r13d, r13d
 jne SHORT G_M63805_IG13
 mov rdi, r15
 mov esi, ebx
 mov r8, 0xD1FFAB1E ; code for System.Numerics.Tensors.TensorSpanHelpers:CalculateStrides(System.ReadOnlySpan`1[long],long):long[]
 call [r8]System.Numerics.Tensors.TensorSpanHelpers:CalculateStrides(System.ReadOnlySpan`1[long],long):long[]
 test rax, rax
 je SHORT G_M63805_IG11
 lea rdi, bword ptr [rax+0x10]
 mov esi, dword ptr [rax+0x08]
 jmp SHORT G_M63805_IG12
 						;; size=37 bbWeight=0.50 PerfScore 5.38
 G_M63805_IG11:
 xor rdi, rdi
 xor esi, esi
 						;; size=4 bbWeight=0.50 PerfScore 0.25
 G_M63805_IG12:
 jmp SHORT G_M63805_IG14
 						;; size=2 bbWeight=0.50 PerfScore 1.00
 G_M63805_IG13:
 mov rdi, r12
 mov esi, r13d
 						;; size=6 bbWeight=0.50 PerfScore 0.25
 G_M63805_IG14:
 mov r12, rdi
 mov r13d, esi
 mov rdi, r12
 mov esi, r13d
 mov rdx, r15
 mov ecx, ebx
 mov r8, 0xD1FFAB1E ; code for System.Numerics.Tensors.TensorSpanHelpers:ValidateStrides(System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long])
 call [r8]System.Numerics.Tensors.TensorSpanHelpers:ValidateStrides(System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long])
 xor esi, esi
 xor edx, edx
 test ebx, ebx
 jle SHORT G_M63805_IG16
 						;; size=38 bbWeight=0.50 PerfScore 3.25
 G_M63805_IG15:
 cmp edx, r13d
 jae G_M63805_IG22
 mov ecx, edx
 mov r8, qword ptr [r12+8*rcx]
 mov rcx, qword ptr [r15+8*rcx]
 dec rcx
 imul rcx, r8
 add rsi, rcx
 inc edx
 cmp edx, ebx
 jl SHORT G_M63805_IG15
 						;; size=35 bbWeight=4 PerfScore 38.00
 G_M63805_IG16:
 mov eax, dword ptr [rbp-0x2C]
 mov edx, eax
 mov esi, esi
 add rsi, rdx
 mov r8d, dword ptr [r14+0x08]
 mov edx, r8d
 cmp rsi, rdx
 jb SHORT G_M63805_IG17
 test r8d, r8d
 jne SHORT G_M63805_IG18
 						;; size=27 bbWeight=0.50 PerfScore 3.25
 G_M63805_IG17:
 mov dword ptr [rbp-0x2C], eax
 sub r8d, eax
 movsxd rsi, r8d
 mov rdx, r15
 mov ecx, ebx
 mov r8, r12
 mov r9d, r13d
 lea rdi, [rbp-0xA0]
 mov r10, 0xD1FFAB1E ; code for System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 call [r10]System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 mov rbx, bword ptr [rbp-0xA8]
 lea rdi, bword ptr [rbx+0x08]
 lea rsi, bword ptr [rbp-0xA0]
- call CORINFO_HELP_ASSIGN_BYREF
- mov ecx, 12
+ mov ecx, 13
 rep movsq 
 add r14, 16
 mov eax, dword ptr [rbp-0x2C]
 shl rax, 3
 add rax, r14
 mov bword ptr [rbx], rax
 jmp SHORT G_M63805_IG20
-						;; size=90 bbWeight=0.50 PerfScore 19.75
+						;; size=85 bbWeight=0.50 PerfScore 19.25
 G_M63805_IG18:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgument_InvalidStridesAndLengths()
 call [rax]System.ThrowHelper:ThrowArgument_InvalidStridesAndLengths()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 G_M63805_IG19:
 cmp dword ptr [rbp-0x2C], 0
 jne SHORT G_M63805_IG21
 test rdx, rdx
 jne SHORT G_M63805_IG21
 xor eax, eax
 mov rcx, bword ptr [rbp-0xA8]
 mov qword ptr [rcx], rax
 mov qword ptr [rcx+0x08], rax
 vxorps xmm0, xmm0, xmm0
 vmovdqu32 zmmword ptr [rcx+0x10], zmm0
 vmovdqu ymmword ptr [rcx+0x50], ymm0
 						;; size=46 bbWeight=0.50 PerfScore 5.92
 G_M63805_IG20:
 add rsp, 136
 pop rbx
 pop r12
 pop r13
 pop r14
 pop r15
 pop rbp
 ret 
 						;; size=18 bbWeight=1 PerfScore 4.25
 G_M63805_IG21:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
 call [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 G_M63805_IG22:
 call CORINFO_HELP_RNGCHKFAIL
 int3 
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 511, prolog size 82, PerfScore 140.31, instruction count 148, allocated bytes for code 511 (MethodHash=1a3806c2) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
+; Total bytes of code 506, prolog size 82, PerfScore 139.81, instruction count 147, allocated bytes for code 506 (MethodHash=1a3806c2) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[double]:.ctor(double[],int,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this (FullOpts)
 ; ============================================================

-5 (-3.21 % of base) - System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this

 ; Assembly listing for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):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; 1 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
 ; V00 this [V00,T05] ( 4, 4 ) byref -> rbx this single-def
 ; V01 arg1 [V01,T06] ( 3, 3 ) byref -> r15 single-def
 ;* V02 arg2 [V02 ] ( 0, 0 ) struct (16) zero-ref multireg-arg single-def <System.ReadOnlySpan`1[long]>
 ;* V03 arg3 [V03 ] ( 0, 0 ) struct (16) zero-ref multireg-arg single-def <System.ReadOnlySpan`1[long]>
 ; V04 arg4 [V04,T11] ( 1, 1 ) long -> [rbp+0x10] single-def
 ;# V05 OutArgs [V05 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ; V06 tmp1 [V06 ] ( 2, 4 ) struct (104) [rbp-0x78] do-not-enreg[XS] must-init addr-exposed ld-addr-op "NewObj constructor temp" <System.Numerics.Tensors.TensorShape>
 ;* V07 tmp2 [V07 ] ( 0, 0 ) long -> zero-ref "Inline return value spill temp"
 ;* V08 tmp3 [V08 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op "Inlining Arg" <System.ReadOnlySpan`1[long]>
 ; V09 tmp4 [V09,T04] ( 4, 8.75) long -> rdi "Inline stloc first use temp"
 ;* V10 tmp5 [V10,T12] ( 0, 0 ) int -> zero-ref "Inline stloc first use temp"
 ; V11 tmp6 [V11,T02] ( 3, 6 ) byref -> rdx single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ; V12 tmp7 [V12,T03] ( 4, 7 ) int -> rcx single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ; V13 tmp8 [V13,T07] ( 2, 2 ) byref -> r8 single-def "field V03._reference (fldOffset=0x0)" P-INDEP
 ; V14 tmp9 [V14,T08] ( 2, 2 ) int -> r9 single-def "field V03._length (fldOffset=0x8)" P-INDEP
 ;* V15 tmp10 [V15,T10] ( 0, 0 ) byref -> zero-ref single-def "field V08._reference (fldOffset=0x0)" P-INDEP
 ; V16 tmp11 [V16,T09] ( 2, 2 ) int -> rdi "field V08._length (fldOffset=0x8)" P-INDEP
 ; V17 cse0 [V17,T01] ( 3, 12 ) long -> rax "CSE #03: aggressive"
 ; V18 rat0 [V18,T00] ( 5, 16.25) long -> rsi "Widened IV V10"
 ;
 ; Lcl frame size = 112
 
 G_M12315_IG01:
 push rbp
 push r15
 push rbx
 sub rsp, 112
 lea rbp, [rsp+0x80]
 xor eax, eax
 mov qword ptr [rbp-0x78], rax
 vxorps xmm8, xmm8, xmm8
 vmovdqu32 zmmword ptr [rbp-0x70], zmm8
 vmovdqa xmmword ptr [rbp-0x30], xmm8
 vmovdqa xmmword ptr [rbp-0x20], xmm8
 mov rbx, rdi
 mov r15, rsi
 						;; size=53 bbWeight=1 PerfScore 11.83
 G_M12315_IG02:
 mov edi, ecx
 test edi, edi
 je SHORT G_M12315_IG06
 						;; size=6 bbWeight=1 PerfScore 1.50
 G_M12315_IG03:
 mov edi, 1
 xor esi, esi
 align [0 bytes for IG04]
 						;; size=7 bbWeight=0.25 PerfScore 0.12
 G_M12315_IG04:
 mov rax, qword ptr [rdx+8*rsi]
 test rax, rax
 jl SHORT G_M12315_IG08
 imul rdi, rax
 inc esi
 cmp esi, ecx
 jl SHORT G_M12315_IG04
 						;; size=19 bbWeight=4 PerfScore 27.00
 G_M12315_IG05:
 test rdi, rdi
 jl SHORT G_M12315_IG08
 						;; size=5 bbWeight=0.50 PerfScore 0.62
 G_M12315_IG06:
 lea rdi, [rbp-0x78]
 mov rsi, qword ptr [rbp+0x10]
 mov rax, 0xD1FFAB1E ; code for System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 call [rax]System.Numerics.Tensors.TensorShape:.ctor(long,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long]):this
 lea rdi, bword ptr [rbx+0x08]
 lea rsi, bword ptr [rbp-0x78]
- call CORINFO_HELP_ASSIGN_BYREF
- mov ecx, 12
+ mov ecx, 13
 rep movsq 
 mov bword ptr [rbx], r15
-						;; size=44 bbWeight=1 PerfScore 33.00
+						;; size=39 bbWeight=1 PerfScore 32.00
 G_M12315_IG07:
 add rsp, 112
 pop rbx
 pop r15
 pop rbp
 ret 
 						;; size=9 bbWeight=1 PerfScore 2.75
 G_M12315_IG08:
 mov rax, 0xD1FFAB1E ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
 call [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
 int3 
 						;; size=13 bbWeight=0.50 PerfScore 1.75
 
-; Total bytes of code 156, prolog size 53, PerfScore 78.58, instruction count 46, allocated bytes for code 156 (MethodHash=8acacfe4) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):this (FullOpts)
+; Total bytes of code 151, prolog size 53, PerfScore 77.58, instruction count 45, allocated bytes for code 151 (MethodHash=8acacfe4) for method System.Numerics.Tensors.ReadOnlyTensorSpan`1[int]:.ctor(byref,System.ReadOnlySpan`1[long],System.ReadOnlySpan`1[long],long):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/f6c9468f1686c033cdecdd07602283f7

[MihuBot]

@EgorBo