[JitDiff X64] [EgorBo] Inline nullable allocators

[MihuBot]

Job completed in 16 minutes 4 seconds (remote runner delay: 1 minute 5 seconds).
dotnet/runtime#122167

Diffs

Diffs

Found 92 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 45954520
Total bytes of diff: 45954199
Total bytes of delta: -321 (-0.00 % of base)
Total relative delta: -0.73
    diff is an improvement.
    relative diff is an improvement.


Top file regressions (bytes):
          12 : System.Collections.Immutable.dasm (0.00 % of base)
          11 : System.Text.Json.dasm (0.00 % of base)
           7 : System.Collections.dasm (0.00 % of base)

Top file improvements (bytes):
        -156 : System.Private.CoreLib.dasm (-0.00 % of base)
         -72 : System.Private.Xml.dasm (-0.00 % of base)
         -57 : System.IO.Ports.dasm (-0.11 % of base)
         -28 : System.IO.Packaging.dasm (-0.02 % of base)
         -20 : System.Diagnostics.FileVersionInfo.dasm (-0.19 % of base)
         -10 : System.Net.Http.dasm (-0.00 % of base)
          -8 : System.Private.DataContractSerialization.dasm (-0.00 % of base)

10 total files with Code Size differences (7 improved, 3 regressed), 250 unchanged.

Top method regressions (bytes):
          22 (1.82 % of base) : System.Private.CoreLib.dasm - System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
          12 (0.65 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
          11 (1.38 % of base) : System.Text.Json.dasm - System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this (FullOpts)
           7 (1.56 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           7 (1.56 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.set_Item(System.Object,System.Object):this (FullOpts)
           6 (0.73 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.Dictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
           5 (1.08 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[byte,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           1 (0.23 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[int,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           1 (0.21 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)

Top method improvements (bytes):
         -57 (-7.79 % of base) : System.IO.Ports.dasm - System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[] (FullOpts)
         -50 (-0.97 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:CreateManifestAndDescriptors(System.Type,System.String,System.Diagnostics.Tracing.EventSource,int):byte[] (FullOpts)
         -31 (-1.43 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.XmlSerializationReaderILGen:WriteSourceEnd(System.String,System.Type,System.Type):this (FullOpts)
         -23 (-0.95 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.XmlSerializationReaderILGen:WriteSourceBegin(System.String):this (FullOpts)
         -20 (-1.00 % of base) : System.Diagnostics.FileVersionInfo.dasm - System.Diagnostics.FileVersionInfo:LoadManagedAssemblyMetadata(System.Reflection.Metadata.MetadataReader,bool):this (FullOpts)
         -20 (-3.13 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String (FullOpts)
         -18 (-4.74 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder) (FullOpts)
         -16 (-13.79 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:GetOpcodeWithDefault(int,System.String):int (FullOpts)
         -10 (-1.45 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.PackUriHelper+ValidatedPartUri:IsRelationshipUri():bool:this (FullOpts)
         -10 (-1.06 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.ZipPackagePartPiece:TryParseName(System.String,byref,byref,byref,byref):bool (FullOpts)
         -10 (-0.25 % of base) : System.Net.Http.dasm - System.Net.Http.AuthenticationHelper+<GetDigestTokenForCredential>d__40:MoveNext():this (FullOpts)
         -10 (-1.56 % of base) : System.Private.CoreLib.dasm - System.StartupHookProvider:ParseStartupHook(byref,System.String) (FullOpts)
         -10 (-5.35 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`1[System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.48 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[byte,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.45 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[double,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.55 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[int,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.51 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[long,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.47 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[short,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.53 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.17 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
          -9 (-2.12 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[int,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
          -8 (-3.31 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.DebugProvider:Write(System.String):this (FullOpts)
          -8 (-7.69 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.ZipPackage:IsZipItemValidOpcPartOrPiece(System.String):bool (FullOpts)
          -8 (-0.75 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.Json.JsonReaderDelegator:ParseJsonDateInDefaultFormat(System.String):System.DateTime (FullOpts)
          -5 (-1.07 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[long,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)

Top method regressions (percentages):
          22 (1.82 % of base) : System.Private.CoreLib.dasm - System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
           7 (1.56 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           7 (1.56 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.set_Item(System.Object,System.Object):this (FullOpts)
          11 (1.38 % of base) : System.Text.Json.dasm - System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this (FullOpts)
           5 (1.08 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[byte,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           6 (0.73 % of base) : System.Private.CoreLib.dasm - System.Collections.Generic.Dictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
          12 (0.65 % of base) : System.Collections.Immutable.dasm - System.Collections.Frozen.FrozenDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
           1 (0.23 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[int,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
           1 (0.21 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)

Top method improvements (percentages):
         -16 (-13.79 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:GetOpcodeWithDefault(int,System.String):int (FullOpts)
         -57 (-7.79 % of base) : System.IO.Ports.dasm - System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[] (FullOpts)
          -8 (-7.69 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.ZipPackage:IsZipItemValidOpcPartOrPiece(System.String):bool (FullOpts)
         -10 (-5.35 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`1[System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -18 (-4.74 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder) (FullOpts)
         -10 (-3.55 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[int,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.53 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[System.Nullable`1[int],System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.51 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[long,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.48 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[byte,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.47 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[short,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -10 (-3.45 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[double,System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
          -8 (-3.31 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.DebugProvider:Write(System.String):this (FullOpts)
         -10 (-3.17 % of base) : System.Private.CoreLib.dasm - System.ValueTuple`2[System.Numerics.Vector`1[float],System.Nullable`1[int]]:System.Collections.IStructuralComparable.CompareTo(System.Object,System.Collections.IComparer):int:this (FullOpts)
         -20 (-3.13 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String (FullOpts)
          -9 (-2.12 % of base) : System.Collections.dasm - System.Collections.Generic.OrderedDictionary`2[int,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
         -10 (-1.56 % of base) : System.Private.CoreLib.dasm - System.StartupHookProvider:ParseStartupHook(byref,System.String) (FullOpts)
         -10 (-1.45 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.PackUriHelper+ValidatedPartUri:IsRelationshipUri():bool:this (FullOpts)
         -31 (-1.43 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.XmlSerializationReaderILGen:WriteSourceEnd(System.String,System.Type,System.Type):this (FullOpts)
          -5 (-1.07 % of base) : System.Collections.dasm - System.Collections.Generic.SortedList`2[long,System.Nullable`1[int]]:System.Collections.IDictionary.Add(System.Object,System.Object):this (FullOpts)
         -10 (-1.06 % of base) : System.IO.Packaging.dasm - System.IO.Packaging.ZipPackagePartPiece:TryParseName(System.String,byref,byref,byref,byref):bool (FullOpts)
         -20 (-1.00 % of base) : System.Diagnostics.FileVersionInfo.dasm - System.Diagnostics.FileVersionInfo:LoadManagedAssemblyMetadata(System.Reflection.Metadata.MetadataReader,bool):this (FullOpts)
         -50 (-0.97 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:CreateManifestAndDescriptors(System.Type,System.String,System.Diagnostics.Tracing.EventSource,int):byte[] (FullOpts)
         -23 (-0.95 % of base) : System.Private.Xml.dasm - System.Xml.Serialization.XmlSerializationReaderILGen:WriteSourceBegin(System.String):this (FullOpts)
          -8 (-0.75 % of base) : System.Private.DataContractSerialization.dasm - System.Runtime.Serialization.Json.JsonReaderDelegator:ParseJsonDateInDefaultFormat(System.String):System.DateTime (FullOpts)
         -10 (-0.25 % of base) : System.Net.Http.dasm - System.Net.Http.AuthenticationHelper+<GetDigestTokenForCredential>d__40:MoveNext():this (FullOpts)

34 total methods with Code Size differences (25 improved, 9 regressed), 283132 unchanged.

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

Artifacts:

• build-clr-checked-main.zip (87 MB)
• build-artifacts-main.zip (698 MB)
• build-clr-checked-pr.zip (87 MB)
• build-artifacts-pr.zip (699 MB)
• jit-diffs-pr.zip (154 MB)
• jit-diffs-main.zip (154 MB)
• diff-frameworks.txt (14 KB)
• ShortDiffsRegressions.md (48 KB)
• LongDiffsRegressions.md (183 KB)
• ShortDiffsImprovements.md (57 KB)
• LongDiffsImprovements.md (531 KB)

[MihuBot]

Top method regressions

22 (1.82 % of base) - System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this

 ; Assembly listing for method System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 7 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T23] (  7,  5.50)     ref  ->  [rbp-0x68]  this class-hnd EH-live single-def <System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]>
-;  V01 arg1         [V01,T22] (  8,  5.75)     ref  ->  r15         class-hnd single-def <System.Array>
+;  V00 this         [V00,T22] (  7,  5.50)     ref  ->  [rbp-0x68]  this class-hnd EH-live single-def <System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]>
+;  V01 arg1         [V01,T23] (  8,  5.38)     ref  ->  r15         class-hnd single-def <System.Array>
 ;  V02 arg2         [V02,T09] (  8, 19.50)     int  ->  registers  
-;  V03 loc0         [V03,T38] (  2,  1   )     ref  ->  r15         class-hnd exact <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]][]>
+;* V03 loc0         [V03    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]][]>
 ;  V04 loc1         [V04,T18] (  4,  9   )     ref  ->  r13         class-hnd exact single-def <System.Collections.DictionaryEntry[]>
 ;  V05 loc2         [V05,T11] ( 12, 18   )     ref  ->  [rbp-0x70]  do-not-enreg[M] class-hnd EH-live <System.Collections.Generic.IEnumerator`1[System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]]>
 ;  V06 loc3         [V06,T17] (  3, 12   )  struct (16) [rbp-0x40]  do-not-enreg[SFRM] multireg-ret multireg-dest must-init ld-addr-op <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;  V07 loc4         [V07,T27] (  2,  4.50)     ref  ->  r13         class-hnd single-def <System.Object[]>
 ;  V08 loc5         [V08,T12] (  4, 16   )  struct (16) [rbp-0x50]  do-not-enreg[SFRM] multireg-ret multireg-dest must-init ld-addr-op <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;# V09 OutArgs      [V09    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V10 tmp1         [V10,T37] (  3,  2.50)    long  ->  rax         "spilling helperCall"
-;* V11 tmp2         [V11    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "spilling qmarkNull" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]][]>
-;  V12 tmp3         [V12,T33] (  3,  3   )     ref  ->  r13         class-hnd single-def "dup spill" <System.Object[]>
+;  V10 tmp1         [V10,T38] (  3,  2.50)    long  ->  rax         "spilling helperCall"
+;  V11 tmp2         [V11,T30] (  4,  3.75)     ref  ->  r13         class-hnd "spilling qmarkNull" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]][]>
+;  V12 tmp3         [V12,T34] (  3,  3   )     ref  ->  r13         class-hnd single-def "dup spill" <System.Object[]>
 ;* V13 tmp4         [V13    ] (  0,  0   )     ref  ->  zero-ref    single-def
-;  V14 tmp5         [V14,T30] (  4,  3   )    long  ->  r11         "spilling helperCall"
+;  V14 tmp5         [V14,T31] (  4,  3   )    long  ->  r11         "spilling helperCall"
 ;  V15 tmp6         [V15,T02] (  4, 24   )    long  ->  r11         "spilling helperCall"
 ;* V16 tmp7         [V16    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;  V17 tmp8         [V17,T05] (  3, 24   )     int  ->  rbx         "impSpillLclRefs"
 ;* V18 tmp9         [V18    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;* V19 tmp10        [V19    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;  V20 tmp11        [V20,T14] (  2, 16   )     ref  ->  r12         class-hnd "impAppendStmt" <System.__Canon>
 ;* V21 tmp12        [V21    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;* V22 tmp13        [V22    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;* V23 tmp14        [V23    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.Nullable`1[int]>
 ;  V24 tmp15        [V24,T00] (  5, 40   )     ref  ->  [rbp-0x78]  class-hnd exact spill-single-def "Single-def Box Helper" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;* V25 tmp16        [V25    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;* V26 tmp17        [V26    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "impSpillSpecialSideEff" <System.ArrayTypeMismatchException>
 ;  V27 tmp18        [V27,T40] (  3,  0   )     ref  ->  r14         class-hnd exact single-def "NewObj constructor temp" <System.ArgumentException>
 ;  V28 tmp19        [V28,T41] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.ArgumentException>
-;  V29 tmp20        [V29,T31] (  4,  3   )    long  ->  r11         "spilling helperCall"
+;  V29 tmp20        [V29,T32] (  4,  3   )    long  ->  r11         "spilling helperCall"
 ;  V30 tmp21        [V30,T03] (  4, 24   )    long  ->  r11         "spilling helperCall"
 ;* V31 tmp22        [V31    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Collections.Generic.KeyValuePair`2[System.__Canon,System.Nullable`1[int]]>
 ;  V32 tmp23        [V32,T01] (  4, 32   )     int  ->  r15         "impSpillLclRefs"
 ;* V33 tmp24        [V33    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;* V34 tmp25        [V34    ] (  0,  0   )    long  ->  zero-ref    "spilling helperCall"
 ;  V35 tmp26        [V35,T15] (  2, 16   )     ref  ->  r12         class-hnd "impAppendStmt" <System.__Canon>
 ;  V36 tmp27        [V36    ] (  2, 16   )  struct ( 8) [rbp-0x58]  do-not-enreg[XS] addr-exposed "location for address-of(RValue)" <System.Nullable`1[int]>
 ;* V37 tmp28        [V37    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Collections.DictionaryEntry>
-;  V38 tmp29        [V38,T32] (  4,  3   )    long  ->  r11         "spilling helperCall"
+;  V38 tmp29        [V38,T33] (  4,  3   )    long  ->  r11         "spilling helperCall"
 ;  V39 tmp30        [V39,T24] (  4,  6   )    long  ->  r11         "spilling helperCall"
 ;  V40 tmp31        [V40,T16] (  2, 16   )     ref  ->  [rbp-0x80]  class-hnd exact spill-single-def "Inlining Arg" <System.Int32>
 ;  V41 tmp32        [V41,T19] (  2,  8   )   ubyte  ->  rax         "field V23.hasValue (fldOffset=0x0)" P-INDEP
 ;  V42 tmp33        [V42,T20] (  2,  8   )     int  ->  [rbp-0x5C]  spill-single-def "field V23.value (fldOffset=0x4)" P-INDEP
 ;  V43 tmp34        [V43    ] (  2, 16   )   ubyte  ->  [rbp-0x58]  do-not-enreg[X] addr-exposed "field V36.hasValue (fldOffset=0x0)" P-DEP
 ;  V44 tmp35        [V44    ] (  2, 16   )     int  ->  [rbp-0x54]  do-not-enreg[X] addr-exposed "field V36.value (fldOffset=0x4)" P-DEP
 ;* V45 tmp36        [V45    ] (  0,  0   )     ref  ->  zero-ref    "field V37._key (fldOffset=0x0)" P-INDEP
 ;* V46 tmp37        [V46    ] (  0,  0   )     ref  ->  zero-ref    "field V37._value (fldOffset=0x8)" P-INDEP
 ;* V47 tmp38        [V47    ] (  0,  0   )     ref  ->  zero-ref    "V21.[000..008)"
 ;  V48 tmp39        [V48,T21] (  2,  8   )   ubyte  ->  [rbp-0x60]  spill-single-def "V21.[008..009)"
 ;* V49 tmp40        [V49    ] (  0,  0   )     int  ->  zero-ref    "V21.[012..016)"
 ;  V50 tmp41        [V50,T28] (  2,  4   )     int  ->  rdi         "argument with side effect"
 ;  V51 tmp42        [V51,T42] (  2,  0   )     ref  ->  r15         single-def "argument with side effect"
 ;  V52 tmp43        [V52,T43] (  2,  0   )     ref  ->  rdx         single-def "argument with side effect"
 ;  V53 tmp44        [V53,T44] (  2,  0   )     ref  ->  r15         single-def "argument with side effect"
 ;  V54 tmp45        [V54,T45] (  2,  0   )     ref  ->  rdx         single-def "argument with side effect"
 ;  V55 tmp46        [V55,T04] (  3, 24   )   byref  ->  r15         "BlockOp address local"
 ;  V56 cse0         [V56,T10] ( 17, 19.60)    long  ->  r14         "CSE #01: moderate"
 ;  V57 rat0         [V57,T29] (  5,  3.75)     ref  ->  r13         "replacement local"
 ;  V58 rat1         [V58,T39] (  2,  1   )    long  ->  rsi         "CSE for expectedClsNode"
 ;  V59 rat2         [V59,T25] (  3,  5.60)    long  ->  r11         "fgMakeTemp is creating a new local variable"
 ;  V60 rat3         [V60,T26] (  3,  5.60)    long  ->  rax         "fgMakeTemp is creating a new local variable"
-;  V61 rat4         [V61,T34] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
-;  V62 rat5         [V62,T35] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
+;  V61 rat4         [V61,T35] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
+;  V62 rat5         [V62,T36] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
 ;  V63 rat6         [V63,T06] (  3, 22.40)    long  ->  r11         "fgMakeTemp is creating a new local variable"
-;  V64 rat7         [V64,T36] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
+;  V64 rat7         [V64,T37] (  3,  2.80)    long  ->  r11         "fgMakeTemp is creating a new local variable"
 ;  V65 rat8         [V65,T07] (  3, 22.40)    long  ->  r11         "fgMakeTemp is creating a new local variable"
 ;  V66 rat9         [V66,T13] (  3, 16   )    long  ->  rdi         "runtime lookup"
 ;  V67 rat10        [V67,T08] (  3, 22.40)    long  ->  rdi         "fgMakeTemp is creating a new local variable"
 ;
 ; Lcl frame size = 88
 
 G_M47509_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        sub      rsp, 88
        lea      rbp, [rsp+0x80]
        vxorps   xmm8, xmm8, xmm8
        vmovdqu  ymmword ptr [rbp-0x50], ymm8
        mov      qword ptr [rbp-0x30], rdi
        mov      gword ptr [rbp-0x68], rdi
        mov      r15, rsi
        mov      ebx, edx
 						;; size=45 bbWeight=1 PerfScore 11.58
 G_M47509_IG02:
        mov      r14, qword ptr [rdi]
        mov      rsi, qword ptr [r14+0x30]
        mov      rsi, qword ptr [rsi]
        mov      r11, qword ptr [rsi+0x58]
        test     r11, r11
-       je       G_M47509_IG17
-						;; size=23 bbWeight=1 PerfScore 9.25
+       je       SHORT G_M47509_IG11
+						;; size=19 bbWeight=1 PerfScore 9.25
 G_M47509_IG03:
        mov      rdi, gword ptr [rbp-0x68]
        mov      rdi, gword ptr [rdi+0x08]
        call     [r11]
        mov      edi, eax
        mov      rsi, r15
        mov      edx, ebx
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.ObjectModel.CollectionHelpers:ValidateCopyToArguments(int,System.Array,int)
        call     [rax]System.Collections.ObjectModel.CollectionHelpers:ValidateCopyToArguments(int,System.Array,int)
        mov      rdi, qword ptr [r14+0x30]
        mov      rdi, qword ptr [rdi]
        mov      rax, qword ptr [rdi+0x88]
        test     rax, rax
-       je       G_M47509_IG18
-						;; size=53 bbWeight=1 PerfScore 17.25
+       je       SHORT G_M47509_IG12
+						;; size=49 bbWeight=1 PerfScore 17.25
 G_M47509_IG04:
        test     r15, r15
-       jne      G_M47509_IG19
+       jne      G_M47509_IG13
 						;; size=9 bbWeight=1 PerfScore 1.25
 G_M47509_IG05:
-       mov      r13, r15
-       test     r13, r13
-       je       SHORT G_M47509_IG08
-						;; size=8 bbWeight=0.50 PerfScore 0.75
-G_M47509_IG06:
-       mov      rsi, 0xD1FFAB1E      ; System.Collections.DictionaryEntry[]
-       cmp      qword ptr [r13], rsi
-       je       SHORT G_M47509_IG08
-						;; size=16 bbWeight=0.25 PerfScore 1.06
-G_M47509_IG07:
        xor      r13, r13
-						;; size=3 bbWeight=0.12 PerfScore 0.03
-G_M47509_IG08:
+						;; size=3 bbWeight=0.25 PerfScore 0.06
+G_M47509_IG06:
        test     r13, r13
-       je       G_M47509_IG23
+       je       G_M47509_IG15
+						;; size=9 bbWeight=1 PerfScore 1.25
+G_M47509_IG07:
        mov      rdi, qword ptr [r14+0x30]
        mov      rdi, qword ptr [rdi]
-       mov      r11, qword ptr [rdi+0x70]
+       mov      r11, qword ptr [rdi+0x68]
        test     r11, r11
-       je       G_M47509_IG33
-						;; size=29 bbWeight=0.50 PerfScore 4.25
-G_M47509_IG09:
+       je       G_M47509_IG35
+						;; size=20 bbWeight=0.50 PerfScore 3.62
+G_M47509_IG08:
        mov      rdi, gword ptr [rbp-0x68]
        mov      rdi, gword ptr [rdi+0x08]
+       mov      rsi, r13
+       mov      edx, ebx
        call     [r11]
-       mov      gword ptr [rbp-0x70], rax
-						;; size=15 bbWeight=0.50 PerfScore 3.50
-G_M47509_IG10:
-       mov      rdi, gword ptr [rbp-0x70]
-       mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():bool:this
-       call     [r11]System.Collections.IEnumerator:MoveNext():bool:this
-       test     eax, eax
-       je       G_M47509_IG14
-       mov      rdi, qword ptr [r14+0x30]
-       mov      rdi, qword ptr [rdi]
-       mov      r11, qword ptr [rdi+0x90]
-       test     r11, r11
-       je       SHORT G_M47509_IG12
-						;; size=44 bbWeight=4 PerfScore 51.00
-G_M47509_IG11:
-       mov      rdi, gword ptr [rbp-0x70]
-       call     [r11]
-       mov      gword ptr [rbp-0x40], rax
-       mov      qword ptr [rbp-0x38], rdx
-       mov      r15d, ebx
-       lea      ebx, [r15+0x01]
-       mov      r12, gword ptr [rbp-0x40]
-       mov      rsi, qword ptr [rbp-0x38]
-       mov      qword ptr [rbp-0x58], rsi
-       lea      rsi, [rbp-0x58]
-       mov      rdi, 0xD1FFAB1E      ; System.Nullable`1[int]
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_BOX_NULLABLE
-       call     [rax]CORINFO_HELP_BOX_NULLABLE
-       mov      gword ptr [rbp-0x80], rax
-       cmp      r15d, dword ptr [r13+0x08]
-       jae      SHORT G_M47509_IG13
-       mov      edi, r15d
-       shl      rdi, 4
-       lea      r15, bword ptr [r13+rdi+0x10]
-       mov      rdi, r15
-       mov      rsi, r12
-       call     CORINFO_HELP_ASSIGN_REF
-       lea      rdi, bword ptr [r15+0x08]
-       mov      rsi, gword ptr [rbp-0x80]
-       call     CORINFO_HELP_ASSIGN_REF
-       jmp      G_M47509_IG10
-						;; size=111 bbWeight=4 PerfScore 110.00
-G_M47509_IG12:
-       mov      rdi, r14
-       mov      rsi, 0xD1FFAB1E      ; global ptr
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
-       call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
-       mov      r11, rax
-       jmp      G_M47509_IG11
-						;; size=33 bbWeight=0.80 PerfScore 4.80
-G_M47509_IG13:
-       call     CORINFO_HELP_RNGCHKFAIL
-       int3     
-						;; size=6 bbWeight=0 PerfScore 0.00
-G_M47509_IG14:
-       mov      rdi, gword ptr [rbp-0x70]
-       mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
-       call     [r11]System.IDisposable:Dispose():this
-						;; size=17 bbWeight=0.50 PerfScore 2.12
-G_M47509_IG15:
+						;; size=16 bbWeight=0.50 PerfScore 3.25
+G_M47509_IG09:
        nop      
 						;; size=1 bbWeight=1 PerfScore 0.25
-G_M47509_IG16:
+G_M47509_IG10:
        add      rsp, 88
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
-G_M47509_IG17:
+G_M47509_IG11:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        mov      r11, rax
        jmp      G_M47509_IG03
 						;; size=33 bbWeight=0.20 PerfScore 1.20
-G_M47509_IG18:
+G_M47509_IG12:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        jmp      G_M47509_IG04
 						;; size=30 bbWeight=0.20 PerfScore 1.15
-G_M47509_IG19:
+G_M47509_IG13:
        cmp      qword ptr [r15], rax
        jne      G_M47509_IG05
 						;; size=9 bbWeight=0.25 PerfScore 1.00
-G_M47509_IG20:
-       mov      rdi, qword ptr [r14+0x30]
-       mov      rdi, qword ptr [rdi]
-       mov      r11, qword ptr [rdi+0x68]
-       test     r11, r11
-       je       SHORT G_M47509_IG22
-						;; size=16 bbWeight=0.50 PerfScore 3.62
-G_M47509_IG21:
-       mov      rdi, gword ptr [rbp-0x68]
-       mov      rdi, gword ptr [rdi+0x08]
-       mov      rsi, r15
-       mov      edx, ebx
-       call     [r11]
-       jmp      SHORT G_M47509_IG15
-						;; size=18 bbWeight=0.50 PerfScore 4.25
-G_M47509_IG22:
-       mov      rdi, r14
-       mov      rsi, 0xD1FFAB1E      ; global ptr
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
-       call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
-       mov      r11, rax
-       jmp      SHORT G_M47509_IG21
-						;; size=30 bbWeight=0.10 PerfScore 0.60
-G_M47509_IG23:
+G_M47509_IG14:
+       mov      r13, r15
+       jmp      G_M47509_IG06
+						;; size=8 bbWeight=0.12 PerfScore 0.28
+G_M47509_IG15:
+       mov      r13, r15
+       test     r13, r13
+       je       SHORT G_M47509_IG18
+						;; size=8 bbWeight=0.50 PerfScore 0.75
+G_M47509_IG16:
+       mov      rsi, 0xD1FFAB1E      ; System.Collections.DictionaryEntry[]
+       cmp      qword ptr [r13], rsi
+       je       SHORT G_M47509_IG18
+						;; size=16 bbWeight=0.25 PerfScore 1.06
+G_M47509_IG17:
+       xor      r13, r13
+						;; size=3 bbWeight=0.12 PerfScore 0.03
+G_M47509_IG18:
+       test     r13, r13
+       jne      G_M47509_IG28
        mov      rsi, r15
        mov      rdi, 0xD1FFAB1E      ; System.Object[]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFARRAY
        call     [rax]CORINFO_HELP_ISINSTANCEOFARRAY
        mov      r13, rax
        test     r13, r13
-       je       G_M47509_IG34
-						;; size=37 bbWeight=0.50 PerfScore 2.62
-G_M47509_IG24:
+       je       G_M47509_IG37
+						;; size=46 bbWeight=0.50 PerfScore 3.25
+G_M47509_IG19:
        mov      rdi, qword ptr [r14+0x30]
        mov      rdi, qword ptr [rdi]
        mov      r11, qword ptr [rdi+0x70]
        test     r11, r11
-       je       G_M47509_IG32
+       je       G_M47509_IG27
 						;; size=20 bbWeight=0.50 PerfScore 3.62
-G_M47509_IG25:
+G_M47509_IG20:
        mov      rdi, gword ptr [rbp-0x68]
        mov      rdi, gword ptr [rdi+0x08]
        call     [r11]
        mov      gword ptr [rbp-0x70], rax
 						;; size=15 bbWeight=0.50 PerfScore 3.50
-G_M47509_IG26:
+G_M47509_IG21:
        mov      rdi, gword ptr [rbp-0x70]
        mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():bool:this
        call     [r11]System.Collections.IEnumerator:MoveNext():bool:this
        test     eax, eax
-       je       G_M47509_IG31
+       je       G_M47509_IG26
        mov      rdi, qword ptr [r14+0x30]
        mov      rdi, qword ptr [rdi]
        mov      r11, qword ptr [rdi+0x90]
        test     r11, r11
-       je       G_M47509_IG29
+       je       G_M47509_IG24
 						;; size=48 bbWeight=4 PerfScore 51.00
-G_M47509_IG27:
+G_M47509_IG22:
        mov      rdi, gword ptr [rbp-0x70]
        call     [r11]
        mov      gword ptr [rbp-0x50], rax
        mov      qword ptr [rbp-0x48], rdx
        lea      edi, [rbx+0x01]
        mov      r15d, edi
        mov      r12, gword ptr [rbp-0x50]
        movzx    rax, byte  ptr [rbp-0x48]
        mov      ecx, dword ptr [rbp-0x44]
        mov      dword ptr [rbp-0x5C], ecx
        mov      dword ptr [rbp-0x60], eax
        mov      rdi, qword ptr [r14+0x30]
        mov      rdi, qword ptr [rdi]
        mov      rdi, qword ptr [rdi+0x98]
        test     rdi, rdi
-       je       SHORT G_M47509_IG30
+       je       SHORT G_M47509_IG25
 						;; size=57 bbWeight=4 PerfScore 76.00
-G_M47509_IG28:
+G_M47509_IG23:
        call     CORINFO_HELP_NEWSFAST
        mov      gword ptr [rbp-0x78], rax
        lea      rdi, bword ptr [rax+0x08]
        mov      rsi, r12
        call     CORINFO_HELP_ASSIGN_REF
        mov      r12, gword ptr [rbp-0x78]
        mov      edx, dword ptr [rbp-0x60]
        mov      byte  ptr [r12+0x10], dl
        mov      edx, dword ptr [rbp-0x5C]
        mov      dword ptr [r12+0x14], edx
        mov      rdx, r12
        movsxd   rsi, ebx
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ARRADDR_ST
        call     [rax]CORINFO_HELP_ARRADDR_ST
        mov      ebx, r15d
-       jmp      G_M47509_IG26
+       jmp      G_M47509_IG21
 						;; size=70 bbWeight=4 PerfScore 60.00
-G_M47509_IG29:
+G_M47509_IG24:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        mov      r11, rax
-       jmp      G_M47509_IG27
+       jmp      G_M47509_IG22
 						;; size=33 bbWeight=0.80 PerfScore 4.80
-G_M47509_IG30:
+G_M47509_IG25:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rdx, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rdx]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        mov      rdi, rax
-       jmp      G_M47509_IG28
+       jmp      G_M47509_IG23
 						;; size=33 bbWeight=0.80 PerfScore 4.80
-G_M47509_IG31:
+G_M47509_IG26:
        mov      rdi, gword ptr [rbp-0x70]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
-       jmp      G_M47509_IG15
+       jmp      G_M47509_IG09
 						;; size=22 bbWeight=0.50 PerfScore 3.12
+G_M47509_IG27:
+       mov      rdi, r14
+       mov      rsi, 0xD1FFAB1E      ; global ptr
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
+       call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
+       mov      r11, rax
+       jmp      G_M47509_IG20
+						;; size=33 bbWeight=0.10 PerfScore 0.60
+G_M47509_IG28:
+       mov      rdi, qword ptr [r14+0x30]
+       mov      rdi, qword ptr [rdi]
+       mov      r11, qword ptr [rdi+0x70]
+       test     r11, r11
+       je       G_M47509_IG36
+						;; size=20 bbWeight=0.50 PerfScore 3.62
+G_M47509_IG29:
+       mov      rdi, gword ptr [rbp-0x68]
+       mov      rdi, gword ptr [rdi+0x08]
+       call     [r11]
+       mov      gword ptr [rbp-0x70], rax
+						;; size=15 bbWeight=0.50 PerfScore 3.50
+G_M47509_IG30:
+       mov      rdi, gword ptr [rbp-0x70]
+       mov      r11, 0xD1FFAB1E      ; code for System.Collections.IEnumerator:MoveNext():bool:this
+       call     [r11]System.Collections.IEnumerator:MoveNext():bool:this
+       test     eax, eax
+       je       G_M47509_IG34
+       mov      rdi, qword ptr [r14+0x30]
+       mov      rdi, qword ptr [rdi]
+       mov      r11, qword ptr [rdi+0x90]
+       test     r11, r11
+       je       SHORT G_M47509_IG32
+						;; size=44 bbWeight=4 PerfScore 51.00
+G_M47509_IG31:
+       mov      rdi, gword ptr [rbp-0x70]
+       call     [r11]
+       mov      gword ptr [rbp-0x40], rax
+       mov      qword ptr [rbp-0x38], rdx
+       mov      r15d, ebx
+       lea      ebx, [r15+0x01]
+       mov      r12, gword ptr [rbp-0x40]
+       mov      rsi, qword ptr [rbp-0x38]
+       mov      qword ptr [rbp-0x58], rsi
+       lea      rsi, [rbp-0x58]
+       mov      rdi, 0xD1FFAB1E      ; System.Nullable`1[int]
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_BOX_NULLABLE
+       call     [rax]CORINFO_HELP_BOX_NULLABLE
+       mov      gword ptr [rbp-0x80], rax
+       cmp      r15d, dword ptr [r13+0x08]
+       jae      SHORT G_M47509_IG33
+       mov      edi, r15d
+       shl      rdi, 4
+       lea      r15, bword ptr [r13+rdi+0x10]
+       mov      rdi, r15
+       mov      rsi, r12
+       call     CORINFO_HELP_ASSIGN_REF
+       lea      rdi, bword ptr [r15+0x08]
+       mov      rsi, gword ptr [rbp-0x80]
+       call     CORINFO_HELP_ASSIGN_REF
+       jmp      G_M47509_IG30
+						;; size=111 bbWeight=4 PerfScore 110.00
 G_M47509_IG32:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        mov      r11, rax
-       jmp      G_M47509_IG25
-						;; size=33 bbWeight=0.10 PerfScore 0.60
+       jmp      G_M47509_IG31
+						;; size=33 bbWeight=0.80 PerfScore 4.80
 G_M47509_IG33:
+       call     CORINFO_HELP_RNGCHKFAIL
+       int3     
+						;; size=6 bbWeight=0 PerfScore 0.00
+G_M47509_IG34:
+       mov      rdi, gword ptr [rbp-0x70]
+       mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
+       call     [r11]System.IDisposable:Dispose():this
+       jmp      G_M47509_IG09
+						;; size=22 bbWeight=0.50 PerfScore 3.12
+G_M47509_IG35:
        mov      rdi, r14
        mov      rsi, 0xD1FFAB1E      ; global ptr
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
        call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
        mov      r11, rax
-       jmp      G_M47509_IG09
+       jmp      G_M47509_IG08
 						;; size=33 bbWeight=0.10 PerfScore 0.60
-G_M47509_IG34:
+G_M47509_IG36:
+       mov      rdi, r14
+       mov      rsi, 0xD1FFAB1E      ; global ptr
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_RUNTIMEHANDLE_CLASS
+       call     [rax]CORINFO_HELP_RUNTIMEHANDLE_CLASS
+       mov      r11, rax
+       jmp      G_M47509_IG29
+						;; size=33 bbWeight=0.10 PerfScore 0.60
+G_M47509_IG37:
        mov      rdi, 0xD1FFAB1E      ; System.ArgumentException
        call     CORINFO_HELP_NEWSFAST
        mov      rbx, rax
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_Argument_IncompatibleArrayType():System.String
        call     [rax]System.SR:get_Argument_IncompatibleArrayType():System.String
        mov      r15, rax
        mov      edi, 0x46D
        mov      rsi, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_STRCNS
        call     [rax]CORINFO_HELP_STRCNS
        mov      rdx, rax
        mov      rsi, r15
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.ArgumentException:.ctor(System.String,System.String):this
        call     [rax]System.ArgumentException:.ctor(System.String,System.String):this
        mov      rdi, rbx
        call     CORINFO_HELP_THROW
        int3     
 						;; size=90 bbWeight=0 PerfScore 0.00
-G_M47509_IG35:
-       push     rax
-						;; size=1 bbWeight=0 PerfScore 0.00
-G_M47509_IG36:
-       cmp      gword ptr [rbp-0x70], 0
-       je       SHORT G_M47509_IG37
-       mov      rdi, gword ptr [rbp-0x70]
-       mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
-       call     [r11]System.IDisposable:Dispose():this
-						;; size=24 bbWeight=0 PerfScore 0.00
-G_M47509_IG37:
-       nop      
-						;; size=1 bbWeight=0 PerfScore 0.00
 G_M47509_IG38:
-       add      rsp, 8
-       ret      
-						;; size=5 bbWeight=0 PerfScore 0.00
-G_M47509_IG39:
        push     rax
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M47509_IG40:
+G_M47509_IG39:
        cmp      gword ptr [rbp-0x70], 0
-       je       SHORT G_M47509_IG41
+       je       SHORT G_M47509_IG40
        mov      rdi, gword ptr [rbp-0x70]
        mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
        call     [r11]System.IDisposable:Dispose():this
 						;; size=24 bbWeight=0 PerfScore 0.00
-G_M47509_IG41:
+G_M47509_IG40:
        nop      
 						;; size=1 bbWeight=0 PerfScore 0.00
-G_M47509_IG42:
+G_M47509_IG41:
        add      rsp, 8
        ret      
 						;; size=5 bbWeight=0 PerfScore 0.00
-G_M47509_IG43:
+G_M47509_IG42:
        push     rax
 						;; size=1 bbWeight=0 PerfScore 0.00
+G_M47509_IG43:
+       cmp      gword ptr [rbp-0x70], 0
+       je       SHORT G_M47509_IG44
+       mov      rdi, gword ptr [rbp-0x70]
+       mov      r11, 0xD1FFAB1E      ; code for System.IDisposable:Dispose():this
+       call     [r11]System.IDisposable:Dispose():this
+						;; size=24 bbWeight=0 PerfScore 0.00
 G_M47509_IG44:
+       nop      
+						;; size=1 bbWeight=0 PerfScore 0.00
+G_M47509_IG45:
+       add      rsp, 8
+       ret      
+						;; size=5 bbWeight=0 PerfScore 0.00
+G_M47509_IG46:
+       push     rax
+						;; size=1 bbWeight=0 PerfScore 0.00
+G_M47509_IG47:
        mov      rdi, 0xD1FFAB1E      ; System.ArgumentException
        call     CORINFO_HELP_NEWSFAST
        mov      r14, rax
        mov      rax, 0xD1FFAB1E      ; code for System.SR:get_Argument_IncompatibleArrayType():System.String
        call     [rax]System.SR:get_Argument_IncompatibleArrayType():System.String
        mov      r15, rax
        mov      edi, 0x46D
        mov      rsi, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_STRCNS
        call     [rax]CORINFO_HELP_STRCNS
        mov      rdx, rax
        mov      rsi, r15
        mov      rdi, r14
        mov      rax, 0xD1FFAB1E      ; code for System.ArgumentException:.ctor(System.String,System.String):this
        call     [rax]System.ArgumentException:.ctor(System.String,System.String):this
        mov      rdi, r14
        call     CORINFO_HELP_THROW
        int3     
 						;; size=90 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 1208, prolog size 45, PerfScore 443.85, instruction count 281, allocated bytes for code 1208 (MethodHash=28f9466a) for method System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
+; Total bytes of code 1230, prolog size 45, PerfScore 445.45, instruction count 286, allocated bytes for code 1230 (MethodHash=28f9466a) for method System.Collections.ObjectModel.ReadOnlyDictionary`2[System.__Canon,System.Nullable`1[int]]:System.Collections.ICollection.CopyTo(System.Array,int):this (FullOpts)
 ; ============================================================

11 (1.38 % of base) - System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this

 ; Assembly listing for method System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 9 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T03] (  5,  3.50)     ref  ->  r15         this class-hnd single-def <System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]>
 ;  V01 arg1         [V01,T00] ( 13,  6   )   byref  ->  [rbp-0x30]  EH-live single-def
 ;  V02 arg2         [V02,T02] (  6,  4   )   byref  ->  rbx         single-def
 ;  V03 arg3         [V03,T04] (  3,  2.50)     ref  ->  r14         class-hnd single-def <System.Text.Json.JsonSerializerOptions>
 ;  V04 arg4         [V04,T01] ( 12,  5.50)   byref  ->  [rbp-0x38]  EH-live single-def
-;  V05 loc0         [V05,T06] (  4,  2   )   ubyte  ->  r15        
-;  V06 loc1         [V06,T05] (  5,  2   )     ref  ->  rdx         class-hnd single-def <System.Object>
-;  V07 loc2         [V07,T07] (  3,  2   )   ubyte  ->  r15        
+;  V05 loc0         [V05,T05] (  4,  2   )   ubyte  ->  r15        
+;  V06 loc1         [V06,T07] (  5,  1.50)     ref  ->  rdx         class-hnd single-def <System.Object>
+;  V07 loc2         [V07,T06] (  3,  2   )   ubyte  ->  r15        
 ;  V08 loc3         [V08    ] (  1,  0.50)   ubyte  ->  [rbp-0x20]  do-not-enreg[X] addr-exposed ld-addr-op
 ;* V09 loc4         [V09    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def <System.Exception>
-;  V10 loc5         [V10,T12] (  2,  0   )     ref  ->  rsi         class-hnd exact <System.Text.Json.JsonReaderException>
+;* V10 loc5         [V10    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def <System.Text.Json.JsonReaderException>
 ;  V11 loc6         [V11,T11] (  4,  0   )     ref  ->  rbx         class-hnd single-def <System.Text.Json.JsonException>
 ;* V12 loc7         [V12    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def <System.Exception>
 ;  V13 OutArgs      [V13    ] (  1,  1   )  struct ( 8) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <UNNAMED>
-;  V14 tmp1         [V14    ] (  4,  3   )  struct ( 8) [rbp-0x28]  do-not-enreg[XS] addr-exposed ld-addr-op "Nullable<T> tmp" <System.Nullable`1[int]>
+;  V14 tmp1         [V14    ] (  4,  2   )  struct ( 8) [rbp-0x28]  do-not-enreg[XS] addr-exposed ld-addr-op "Nullable<T> tmp" <System.Nullable`1[int]>
 ;  V15 tmp2         [V15,T10] ( 16,  0   )     ref  ->  r15         class-hnd single-def "impSpillSpecialSideEff" <System.Exception>
-;* V16 tmp3         [V16    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "spilling qmarkNull" <System.Text.Json.JsonReaderException>
+;  V16 tmp3         [V16,T12] (  4,  0   )     ref  ->  rsi         class-hnd "spilling qmarkNull" <System.Text.Json.JsonReaderException>
 ;  V17 tmp4         [V17,T08] (  3,  1.50)   ubyte  ->  rax         "Inline return value spill temp"
 ;* V18 tmp5         [V18    ] (  0,  0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V19 tmp6         [V19,T09] (  0,  0   )     int  ->  zero-ref   
 ;* V20 tmp7         [V20    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg" <System.Text.Json.Serialization.Metadata.JsonTypeInfo>
 ;* V21 tmp8         [V21    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;  V22 tmp9         [V22    ] (  3,  1.50)   ubyte  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed "field V14.hasValue (fldOffset=0x0)" P-DEP
-;  V23 tmp10        [V23    ] (  3,  1.50)     int  ->  [rbp-0x24]  do-not-enreg[X] addr-exposed "field V14.value (fldOffset=0x4)" P-DEP
+;  V22 tmp9         [V22    ] (  3,  1.25)   ubyte  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed "field V14.hasValue (fldOffset=0x0)" P-DEP
+;  V23 tmp10        [V23    ] (  3,  1.25)     int  ->  [rbp-0x24]  do-not-enreg[X] addr-exposed "field V14.value (fldOffset=0x4)" P-DEP
 ;  V24 tmp11        [V24,T13] (  2,  0   )     ref  ->  rdi         single-def "argument with side effect"
 ;  V25 tmp12        [V25,T14] (  2,  0   )     ref  ->  rdi         single-def "argument with side effect"
 ;  V26 tmp13        [V26,T15] (  2,  0   )     ref  ->  rdi         single-def "argument with side effect"
 ;
 ; Lcl frame size = 40
 
 G_M27675_IG01:
        push     rbp
        push     r15
        push     r14
        push     rbx
        sub      rsp, 40
        lea      rbp, [rsp+0x40]
        mov      bword ptr [rbp-0x30], rsi
        mov      bword ptr [rbp-0x38], r8
        mov      r15, rdi
        mov      rbx, rdx
        mov      r14, rcx
        mov      rax, r8
 						;; size=35 bbWeight=1 PerfScore 7.75
 G_M27675_IG02:
        cmp      dword ptr [rax+0x24], 0
        jne      SHORT G_M27675_IG06
 						;; size=6 bbWeight=1 PerfScore 4.00
 G_M27675_IG03:
        cmp      byte  ptr [r15+0x14], 0
        jne      SHORT G_M27675_IG06
        cmp      byte  ptr [r15+0x13], 0
        je       SHORT G_M27675_IG04
        cmp      byte  ptr [rsi+0x24], 0
        jne      SHORT G_M27675_IG04
        mov      rdi, rsi
        mov      rcx, 0xD1FFAB1E      ; code for System.Text.Json.JsonHelpers:TryAdvanceWithReadAhead(byref):bool
        call     [rcx]System.Text.Json.JsonHelpers:TryAdvanceWithReadAhead(byref):bool
        jmp      SHORT G_M27675_IG05
 						;; size=37 bbWeight=0.50 PerfScore 8.75
 G_M27675_IG04:
        mov      rdi, rsi
        mov      rcx, 0xD1FFAB1E      ; code for System.Text.Json.Utf8JsonReader:Read():bool:this
        call     [rcx]System.Text.Json.Utf8JsonReader:Read():bool:this
 						;; size=15 bbWeight=0.50 PerfScore 1.75
 G_M27675_IG05:
        test     eax, eax
        mov      rsi, bword ptr [rbp-0x30]
        je       G_M27675_IG08
 						;; size=12 bbWeight=0.50 PerfScore 1.12
 G_M27675_IG06:
        lea      rdx, [rbp-0x20]
        mov      qword ptr [rsp], rdx
        mov      rax, bword ptr [rbp-0x38]
        mov      rdx, gword ptr [rax+0x58]
        mov      rdx, gword ptr [rdx+0xC0]
        mov      rdi, r15
        mov      rcx, r14
        mov      r8, rax
        mov      r9, rbx
        mov      r10, 0xD1FFAB1E      ; code for System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:TryRead(byref,System.Type,System.Text.Json.JsonSerializerOptions,byref,byref,byref):bool:this
        call     [r10]System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:TryRead(byref,System.Type,System.Text.Json.JsonSerializerOptions,byref,byref,byref):bool:this
        mov      r15d, eax
        test     r15d, r15d
        je       SHORT G_M27675_IG07
        mov      rsi, bword ptr [rbp-0x30]
        cmp      byte  ptr [rsi+0x46], 0
        jne      SHORT G_M27675_IG07
        mov      rdi, rsi
        mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.Utf8JsonReader:Read():bool:this
        call     [rax]System.Text.Json.Utf8JsonReader:Read():bool:this
        test     eax, eax
        jne      SHORT G_M27675_IG07
        mov      rdi, bword ptr [rbp-0x30]
        cmp      byte  ptr [rdi+0x24], 0
        jne      SHORT G_M27675_IG07
        mov      rsi, rbx
        mov      rdi, 0xD1FFAB1E      ; System.Nullable`1[int]
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_BOX_NULLABLE
        call     [rax]CORINFO_HELP_BOX_NULLABLE
        mov      r8, bword ptr [rbp-0x38]
        lea      rdi, bword ptr [r8+0x50]
        mov      rsi, rax
        call     CORINFO_HELP_CHECKED_ASSIGN_REF
        xor      r15d, r15d
 						;; size=139 bbWeight=0.50 PerfScore 16.88
 G_M27675_IG07:
        jmp      SHORT G_M27675_IG14
 						;; size=2 bbWeight=0.50 PerfScore 1.00
 G_M27675_IG08:
        mov      rax, bword ptr [rbp-0x38]
        cmp      byte  ptr [rax+0x28], 0
        je       SHORT G_M27675_IG09
        mov      rdx, gword ptr [rax+0x50]
        test     rdx, rdx
        mov      rax, bword ptr [rbp-0x38]
        jne      SHORT G_M27675_IG10
 						;; size=23 bbWeight=0.50 PerfScore 4.62
 G_M27675_IG09:
        xor      edx, edx
        mov      qword ptr [rbx], rdx
        jmp      SHORT G_M27675_IG12
 						;; size=7 bbWeight=0.50 PerfScore 1.62
 G_M27675_IG10:
        mov      rdi, 0xD1FFAB1E      ; System.Int32
        cmp      qword ptr [rdx], rdi
        jne      SHORT G_M27675_IG13
        mov      byte  ptr [rbp-0x28], 1
        mov      edi, dword ptr [rdx+0x08]
        mov      dword ptr [rbp-0x24], edi
-						;; size=25 bbWeight=0.50 PerfScore 4.12
+						;; size=25 bbWeight=0.25 PerfScore 2.06
 G_M27675_IG11:
        mov      rdi, qword ptr [rbp-0x28]
        mov      qword ptr [rbx], rdi
 						;; size=7 bbWeight=0.50 PerfScore 1.00
 G_M27675_IG12:
        movzx    r15, byte  ptr [rsi+0x24]
        jmp      SHORT G_M27675_IG14
 						;; size=7 bbWeight=0.50 PerfScore 2.00
 G_M27675_IG13:
        lea      rdi, [rbp-0x28]
        mov      rsi, 0xD1FFAB1E      ; System.Nullable`1[int]
        mov      rcx, 0xD1FFAB1E      ; code for CORINFO_HELP_UNBOX_NULLABLE
        call     [rcx]CORINFO_HELP_UNBOX_NULLABLE
        mov      rax, bword ptr [rbp-0x38]
        mov      rsi, bword ptr [rbp-0x30]
        jmp      SHORT G_M27675_IG11
 						;; size=36 bbWeight=0 PerfScore 0.00
 G_M27675_IG14:
        mov      eax, r15d
 						;; size=3 bbWeight=1 PerfScore 0.25
 G_M27675_IG15:
        add      rsp, 40
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=11 bbWeight=1 PerfScore 3.25
 G_M27675_IG16:
        push     rax
 						;; size=1 bbWeight=0 PerfScore 0.00
 G_M27675_IG17:
        mov      r15, rdi
        test     r15, r15
        jne      SHORT G_M27675_IG19
 						;; size=8 bbWeight=0 PerfScore 0.00
 G_M27675_IG18:
-       mov      rsi, r15
-       mov      rdi, 0xD1FFAB1E      ; System.FormatException
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
-       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
-       test     rax, rax
-       jne      G_M27675_IG21
+       xor      rsi, rsi
        jmp      SHORT G_M27675_IG20
-						;; size=36 bbWeight=0 PerfScore 0.00
+						;; size=4 bbWeight=0 PerfScore 0.00
 G_M27675_IG19:
        mov      rdi, 0xD1FFAB1E      ; System.Text.Json.JsonReaderException
        cmp      qword ptr [r15], rdi
        jne      SHORT G_M27675_IG18
        mov      rsi, r15
-       mov      rdi, bword ptr [rbp-0x38]
-       mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.ThrowHelper:ReThrowWithPath(byref,System.Text.Json.JsonReaderException)
-       call     [rax]System.Text.Json.ThrowHelper:ReThrowWithPath(byref,System.Text.Json.JsonReaderException)
-       jmp      G_M27675_IG26
-						;; size=39 bbWeight=0 PerfScore 0.00
+						;; size=18 bbWeight=0 PerfScore 0.00
 G_M27675_IG20:
+       test     rsi, rsi
+       jne      G_M27675_IG22
+       mov      rsi, r15
+       mov      rdi, 0xD1FFAB1E      ; System.FormatException
+       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
+       call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
+       test     rax, rax
+       jne      G_M27675_IG23
        mov      rsi, r15
        mov      rdi, 0xD1FFAB1E      ; System.InvalidOperationException
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        test     rax, rax
-       jne      G_M27675_IG22
+       jne      G_M27675_IG24
        mov      rsi, r15
        mov      rdi, 0xD1FFAB1E      ; System.Text.Json.JsonException
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        mov      rbx, rax
        test     rbx, rbx
-       jne      G_M27675_IG24
+       jne      G_M27675_IG26
        mov      rsi, r15
        mov      rdi, 0xD1FFAB1E      ; System.NotSupportedException
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_ISINSTANCEOFCLASS
        call     [rax]CORINFO_HELP_ISINSTANCEOFCLASS
        test     rax, rax
-       je       G_M27675_IG26
+       je       G_M27675_IG28
        mov      rdi, r15
        mov      rax, qword ptr [r15]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x20]System.Exception:get_Message():System.String:this
        mov      rdi, rax
        mov      rsi, 0xD1FFAB1E      ; ' Path: '
        mov      rax, 0xD1FFAB1E      ; code for System.String:Contains(System.String):bool:this
        cmp      dword ptr [rdi], edi
        call     [rax]System.String:Contains(System.String):bool:this
        test     eax, eax
-       jne      G_M27675_IG26
-       jmp      G_M27675_IG25
-						;; size=158 bbWeight=0 PerfScore 0.00
+       jne      G_M27675_IG28
+						;; size=196 bbWeight=0 PerfScore 0.00
 G_M27675_IG21:
-       mov      rdi, r15
-       mov      rax, qword ptr [r15]
-       mov      rax, qword ptr [rax+0x48]
-       call     [rax+0x08]System.Exception:get_Source():System.String:this
-       mov      rdi, rax
-       mov      rsi, 0xD1FFAB1E      ; 'System.Text.Json.Rethrowable'
-       mov      rax, 0xD1FFAB1E      ; code for System.String:op_Equality(System.String,System.String):bool
-       call     [rax]System.String:op_Equality(System.String,System.String):bool
-       test     eax, eax
-       je       G_M27675_IG26
-       jmp      SHORT G_M27675_IG23
-						;; size=48 bbWeight=0 PerfScore 0.00
+       jmp      G_M27675_IG27
+						;; size=5 bbWeight=0 PerfScore 0.00
 G_M27675_IG22:
+       mov      rdi, bword ptr [rbp-0x38]
+       mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.ThrowHelper:ReThrowWithPath(byref,System.Text.Json.JsonReaderException)
+       call     [rax]System.Text.Json.ThrowHelper:ReThrowWithPath(byref,System.Text.Json.JsonReaderException)
+       jmp      G_M27675_IG28
+						;; size=21 bbWeight=0 PerfScore 0.00
+G_M27675_IG23:
        mov      rdi, r15
        mov      rax, qword ptr [r15]
        mov      rax, qword ptr [rax+0x48]
        call     [rax+0x08]System.Exception:get_Source():System.String:this
        mov      rdi, rax
        mov      rsi, 0xD1FFAB1E      ; 'System.Text.Json.Rethrowable'
        mov      rax, 0xD1FFAB1E      ; code for System.String:op_Equality(System.String,System.String):bool
        call     [rax]System.String:op_Equality(System.String,System.String):bool
        test     eax, eax
-       je       SHORT G_M27675_IG26
+       je       G_M27675_IG28
+       jmp      SHORT G_M27675_IG25
+						;; size=48 bbWeight=0 PerfScore 0.00
+G_M27675_IG24:
+       mov      rdi, r15
+       mov      rax, qword ptr [r15]
+       mov      rax, qword ptr [rax+0x48]
+       call     [rax+0x08]System.Exception:get_Source():System.String:this
+       mov      rdi, rax
+       mov      rsi, 0xD1FFAB1E      ; 'System.Text.Json.Rethrowable'
+       mov      rax, 0xD1FFAB1E      ; code for System.String:op_Equality(System.String,System.String):bool
+       call     [rax]System.String:op_Equality(System.String,System.String):bool
+       test     eax, eax
+       je       SHORT G_M27675_IG28
 						;; size=42 bbWeight=0 PerfScore 0.00
-G_M27675_IG23:
+G_M27675_IG25:
        mov      rdi, bword ptr [rbp-0x38]
        mov      rsi, bword ptr [rbp-0x30]
        mov      rdx, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.ThrowHelper:ReThrowWithPath(byref,byref,System.Exception)
        call     [rax]System.Text.Json.ThrowHelper:ReThrowWithPath(byref,byref,System.Exception)
-       jmp      SHORT G_M27675_IG26
+       jmp      SHORT G_M27675_IG28
 						;; size=25 bbWeight=0 PerfScore 0.00
-G_M27675_IG24:
+G_M27675_IG26:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.JsonException:get_Path():System.String:this
        call     [rax]System.Text.Json.JsonException:get_Path():System.String:this
        test     rax, rax
-       jne      SHORT G_M27675_IG26
+       jne      SHORT G_M27675_IG28
        mov      rdi, bword ptr [rbp-0x38]
        mov      rsi, bword ptr [rbp-0x30]
        mov      rdx, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.ThrowHelper:AddJsonExceptionInformation(byref,byref,System.Text.Json.JsonException)
        call     [rax]System.Text.Json.ThrowHelper:AddJsonExceptionInformation(byref,byref,System.Text.Json.JsonException)
-       jmp      SHORT G_M27675_IG26
+       jmp      SHORT G_M27675_IG28
 						;; size=45 bbWeight=0 PerfScore 0.00
-G_M27675_IG25:
+G_M27675_IG27:
        mov      rdi, bword ptr [rbp-0x38]
        mov      rsi, bword ptr [rbp-0x30]
        mov      rdx, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Text.Json.ThrowHelper:ThrowNotSupportedException(byref,byref,System.Exception)
        call     [rax]System.Text.Json.ThrowHelper:ThrowNotSupportedException(byref,byref,System.Exception)
 						;; size=23 bbWeight=0 PerfScore 0.00
-G_M27675_IG26:
+G_M27675_IG28:
        call     CORINFO_HELP_RETHROW
        int3     
 						;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 796, prolog size 35, PerfScore 58.12, instruction count 194, allocated bytes for code 796 (MethodHash=862193e4) for method System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this (FullOpts)
+; Total bytes of code 807, prolog size 35, PerfScore 56.06, instruction count 197, allocated bytes for code 807 (MethodHash=862193e4) for method System.Text.Json.Serialization.JsonConverter`1[System.Nullable`1[int]]:ReadCore(byref,byref,System.Text.Json.JsonSerializerOptions,byref):bool:this (FullOpts)
 ; ============================================================

Larger list of diffs: https://gist.github.com/MihuBot/b18d5289c10a01237f1990d416e2ce5c

[MihuBot]

Top method improvements

-57 (-7.79 % of base) - System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[]

 ; Assembly listing for method System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[] (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 8 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 loc0         [V00,T01] ( 14, 26   )     ref  ->  r15         class-hnd exact single-def <System.Collections.Generic.List`1[System.String]>
 ;  V01 loc1         [V01,T02] (  6, 26   )     ref  ->  r14         class-hnd <System.String[]>
 ;  V02 loc2         [V02,T00] ( 10, 42   )     int  ->  r13        
-;  V03 loc3         [V03,T05] (  5, 14   )     ref  ->  rsi         class-hnd exact <System.String>
-;  V04 loc4         [V04,T06] (  5, 14   )     ref  ->  rsi         class-hnd exact <System.String>
+;  V03 loc3         [V03,T05] (  6, 14   )     ref  ->  rsi         class-hnd exact <System.String>
+;  V04 loc4         [V04,T06] (  6, 14   )     ref  ->  rsi         class-hnd exact <System.String>
 ;# V05 OutArgs      [V05    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V06 tmp1         [V06,T17] (  3,  6   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
+;  V06 tmp1         [V06,T09] (  3,  6   )     ref  ->  r15         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
 ;* V07 tmp2         [V07    ] (  0,  0   )     ref  ->  zero-ref    "spilling varStr"
-;  V08 tmp3         [V08,T07] (  3, 12   )   byref  ->  rdi         "clonning data ptr"
-;  V09 tmp4         [V09,T13] (  2,  8   )     int  ->  rcx         "spilling unroll qmark"
+;  V08 tmp3         [V08,T10] (  3,  6   )   byref  ->  rdi         single-def "clonning data ptr"
+;* V09 tmp4         [V09,T23] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
 ;* V10 tmp5         [V10    ] (  0,  0   )     ref  ->  zero-ref    "spilling varStr"
-;* V11 tmp6         [V11,T35] (  0,  0   )   byref  ->  zero-ref    "clonning data ptr"
-;  V12 tmp7         [V12,T14] (  2,  8   )     int  ->  rdi         "spilling unroll qmark"
+;* V11 tmp6         [V11,T33] (  0,  0   )   byref  ->  zero-ref    single-def "clonning data ptr"
+;* V12 tmp7         [V12,T24] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
 ;* V13 tmp8         [V13    ] (  0,  0   )     ref  ->  zero-ref    "spilling varStr"
-;  V14 tmp9         [V14,T08] (  3, 12   )   byref  ->  rdi         "clonning data ptr"
-;  V15 tmp10        [V15,T15] (  2,  8   )     int  ->  rcx         "spilling unroll qmark"
+;  V14 tmp9         [V14,T11] (  3,  6   )   byref  ->  rdi         single-def "clonning data ptr"
+;* V15 tmp10        [V15,T25] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
 ;* V16 tmp11        [V16    ] (  0,  0   )     ref  ->  zero-ref    "spilling varStr"
-;* V17 tmp12        [V17,T36] (  0,  0   )   byref  ->  zero-ref    "clonning data ptr"
-;  V18 tmp13        [V18,T16] (  2,  8   )     int  ->  rdi         "spilling unroll qmark"
-;  V19 tmp14        [V19,T29] (  2,  4   )     ref  ->  r14         class-hnd single-def "Inlining Arg" <System.IO.EnumerationOptions>
-;  V20 tmp15        [V20,T18] (  3,  6   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
-;  V21 tmp16        [V21,T19] (  3,  6   )     ref  ->  r12         class-hnd "Inline stloc first use temp" <System.String[]>
-;  V22 tmp17        [V22,T11] (  4,  8   )     int  ->  rax         "Inline stloc first use temp"
-;  V23 tmp18        [V23,T30] (  2,  4   )     ref  ->  r14         class-hnd single-def "Inlining Arg" <System.IO.EnumerationOptions>
-;  V24 tmp19        [V24,T20] (  3,  6   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
-;  V25 tmp20        [V25,T21] (  3,  6   )     ref  ->  rbx         class-hnd "Inline stloc first use temp" <System.String[]>
-;  V26 tmp21        [V26,T12] (  4,  8   )     int  ->  r12         "Inline stloc first use temp"
-;  V27 tmp22        [V27,T31] (  2,  4   )     ref  ->  rsi         single-def "argument with side effect"
-;  V28 tmp23        [V28,T32] (  2,  4   )     ref  ->  rsi         single-def "argument with side effect"
-;* V29 cse0         [V29,T37] (  0,  0   )   byref  ->  zero-ref    "CSE #12: moderate"
-;  V30 cse1         [V30,T22] (  2,  4   )   byref  ->  rdi         "CSE #06: moderate"
-;  V31 cse2         [V31,T23] (  2,  4   )   byref  ->  rdi         "CSE #19: moderate"
-;  V32 cse3         [V32,T24] (  3,  6   )     int  ->  rdi         "CSE #08: moderate"
-;  V33 cse4         [V33,T25] (  3,  6   )     int  ->  rdi         "CSE #21: moderate"
-;  V34 cse5         [V34,T26] (  3,  6   )    long  ->  rax         "CSE #07: moderate"
-;  V35 cse6         [V35,T27] (  3,  6   )    long  ->  rax         "CSE #20: moderate"
-;  V36 cse7         [V36,T09] (  3, 10   )     int  ->  rdi         "CSE #02: moderate"
-;  V37 cse8         [V37,T10] (  3, 10   )     int  ->  rdi         "CSE #15: moderate"
-;  V38 cse9         [V38,T03] (  2, 16   )     int  ->  rdi         "CSE #10: aggressive"
-;  V39 cse10        [V39,T04] (  2, 16   )     int  ->  rdi         "CSE #23: aggressive"
-;  V40 cse11        [V40,T28] (  5,  4   )    long  ->  rbx         "CSE #01: moderate"
-;  V41 cse12        [V41,T33] (  2,  4   )     int  ->  rdi         "CSE #09: moderate"
-;  V42 cse13        [V42,T34] (  2,  4   )     int  ->  rdi         "CSE #22: moderate"
+;* V17 tmp12        [V17,T34] (  0,  0   )   byref  ->  zero-ref    single-def "clonning data ptr"
+;* V18 tmp13        [V18,T26] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
+;  V19 tmp14        [V19,T17] (  2,  4   )     ref  ->  r14         class-hnd single-def "Inlining Arg" <System.IO.EnumerationOptions>
+;  V20 tmp15        [V20,T12] (  3,  6   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
+;  V21 tmp16        [V21,T13] (  3,  6   )     ref  ->  r12         class-hnd "Inline stloc first use temp" <System.String[]>
+;  V22 tmp17        [V22,T07] (  4,  8   )     int  ->  rax         "Inline stloc first use temp"
+;  V23 tmp18        [V23,T18] (  2,  4   )     ref  ->  r14         class-hnd single-def "Inlining Arg" <System.IO.EnumerationOptions>
+;  V24 tmp19        [V24,T14] (  3,  6   )     ref  ->  r13         class-hnd exact single-def "NewObj constructor temp" <System.Collections.Generic.List`1[System.String]>
+;  V25 tmp20        [V25,T15] (  3,  6   )     ref  ->  rbx         class-hnd "Inline stloc first use temp" <System.String[]>
+;  V26 tmp21        [V26,T08] (  4,  8   )     int  ->  r12         "Inline stloc first use temp"
+;  V27 tmp22        [V27,T19] (  2,  4   )     ref  ->  rsi         single-def "argument with side effect"
+;  V28 tmp23        [V28,T20] (  2,  4   )     ref  ->  rsi         single-def "argument with side effect"
+;* V29 cse0         [V29,T35] (  0,  0   )   byref  ->  zero-ref    "CSE #12: moderate"
+;  V30 cse1         [V30,T27] (  2,  2   )   byref  ->  rdi         "CSE #06: moderate"
+;  V31 cse2         [V31,T28] (  2,  2   )   byref  ->  rdi         "CSE #19: moderate"
+;  V32 cse3         [V32,T29] (  3,  3   )     int  ->  rdi         "CSE #08: moderate"
+;  V33 cse4         [V33,T30] (  3,  3   )     int  ->  rdi         "CSE #21: moderate"
+;  V34 cse5         [V34,T31] (  3,  3   )    long  ->  rax         "CSE #07: moderate"
+;  V35 cse6         [V35,T32] (  3,  3   )    long  ->  rax         "CSE #20: moderate"
+;  V36 cse7         [V36,T03] (  2, 16   )     int  ->  rdi         "CSE #10: aggressive"
+;  V37 cse8         [V37,T04] (  2, 16   )     int  ->  rdi         "CSE #23: aggressive"
+;  V38 cse9         [V38,T16] (  5,  4   )    long  ->  rbx         "CSE #01: moderate"
+;  V39 cse10        [V39,T21] (  2,  4   )     int  ->  rdi         "CSE #09: moderate"
+;  V40 cse11        [V40,T22] (  2,  4   )     int  ->  rdi         "CSE #22: moderate"
 ;
 ; Lcl frame size = 8
 
 G_M37624_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
 						;; size=16 bbWeight=1 PerfScore 7.50
 G_M37624_IG02:
        mov      rbx, 0xD1FFAB1E      ; System.Collections.Generic.List`1[System.String]
        mov      rdi, rbx
        call     CORINFO_HELP_NEWSFAST
        mov      r15, rax
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M37624_IG20
 						;; size=40 bbWeight=1 PerfScore 6.00
 G_M37624_IG03:
        mov      rdi, 0xD1FFAB1E      ; data for System.Collections.Generic.List`1[System.String]:s_emptyArray
        mov      rsi, gword ptr [rdi]
        lea      rdi, bword ptr [r15+0x08]
        call     CORINFO_HELP_ASSIGN_REF
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M37624_IG21
 						;; size=41 bbWeight=1 PerfScore 8.00
 G_M37624_IG04:
        mov      rdi, 0xD1FFAB1E      ; data for System.IO.EnumerationOptions:<Compatible>k__BackingField
        mov      r14, gword ptr [rdi]
        mov      rdi, rbx
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      rcx, r14
        mov      rdi, 0xD1FFAB1E      ; '/dev'
        mov      rsi, 0xD1FFAB1E      ; 'ttyd*'
        mov      edx, 1
        mov      rax, 0xD1FFAB1E      ; code for System.IO.Directory:InternalEnumeratePaths(System.String,System.String,int,System.IO.EnumerationOptions):System.Collections.Generic.IEnumerable`1[System.String]
        call     [rax]System.IO.Directory:InternalEnumeratePaths(System.String,System.String,int,System.IO.EnumerationOptions):System.Collections.Generic.IEnumerable`1[System.String]
        mov      rsi, rax
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:.ctor(System.Collections.Generic.IEnumerable`1[System.__Canon]):this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:.ctor(System.Collections.Generic.IEnumerable`1[System.__Canon]):this
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
        mov      r14, rax
        xor      r13d, r13d
        jmp      SHORT G_M37624_IG07
 						;; size=105 bbWeight=1 PerfScore 17.75
 G_M37624_IG05:
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:AddWithResize(System.__Canon):this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:AddWithResize(System.__Canon):this
 						;; size=15 bbWeight=2 PerfScore 7.00
 G_M37624_IG06:
        inc      r13d
 						;; size=3 bbWeight=4 PerfScore 1.00
 G_M37624_IG07:
        mov      edi, dword ptr [r14+0x08]
        cmp      edi, r13d
-       jle      G_M37624_IG11
-						;; size=13 bbWeight=8 PerfScore 26.00
+       jle      SHORT G_M37624_IG11
+						;; size=9 bbWeight=8 PerfScore 26.00
 G_M37624_IG08:
        mov      edi, r13d
        mov      rsi, gword ptr [r14+8*rdi+0x10]
-       mov      edi, dword ptr [rsi+0x08]
-       cmp      edi, 5
+       cmp      dword ptr [rsi+0x08], 5
        jl       SHORT G_M37624_IG10
-						;; size=16 bbWeight=4 PerfScore 22.00
+						;; size=14 bbWeight=4 PerfScore 25.00
 G_M37624_IG09:
-       mov      edi, edi
+       mov      edi, dword ptr [rsi+0x08]
        lea      rdi, bword ptr [rsi+2*rdi-0x0A]
        mov      rax, qword ptr [rdi+0x0C]
        mov      rcx, 0xD1FFAB1E
        xor      rcx, rax
        movzx    rdi, word  ptr [rdi+0x14]
        mov      edx, edi
        xor      edx, 116
        or       rcx, rdx
-       sete     cl
-       movzx    rcx, cl
-       test     ecx, ecx
-       jne      SHORT G_M37624_IG06
+       je       SHORT G_M37624_IG06
        mov      rcx, 0xD1FFAB1E
        xor      rax, rcx
        xor      edi, 107
        or       rdi, rax
-       sete     dil
-       movzx    rdi, dil
-       test     edi, edi
-       jne      SHORT G_M37624_IG06
-						;; size=77 bbWeight=2 PerfScore 25.00
+       je       SHORT G_M37624_IG06
+						;; size=60 bbWeight=1 PerfScore 11.25
 G_M37624_IG10:
        inc      dword ptr [r15+0x14]
        mov      r12, gword ptr [r15+0x08]
        mov      eax, dword ptr [r15+0x10]
        mov      edi, dword ptr [r12+0x08]
        cmp      edi, eax
-       jbe      G_M37624_IG05
+       jbe      SHORT G_M37624_IG05
        lea      edi, [rax+0x01]
        mov      dword ptr [r15+0x10], edi
        mov      edi, eax
        lea      rdi, bword ptr [r12+8*rdi+0x10]
        call     CORINFO_HELP_ASSIGN_REF
-       jmp      G_M37624_IG06
-						;; size=49 bbWeight=2 PerfScore 32.00
+       jmp      SHORT G_M37624_IG06
+						;; size=42 bbWeight=2 PerfScore 32.00
 G_M37624_IG11:
        mov      rdi, 0xD1FFAB1E      ; data for System.IO.EnumerationOptions:<Compatible>k__BackingField
        mov      r14, gword ptr [rdi]
        mov      rdi, rbx
        call     CORINFO_HELP_NEWSFAST
        mov      r13, rax
        mov      rcx, r14
        mov      rdi, 0xD1FFAB1E      ; '/dev'
        mov      rsi, 0xD1FFAB1E      ; 'cuau*'
        mov      edx, 1
        mov      rax, 0xD1FFAB1E      ; code for System.IO.Directory:InternalEnumeratePaths(System.String,System.String,int,System.IO.EnumerationOptions):System.Collections.Generic.IEnumerable`1[System.String]
        call     [rax]System.IO.Directory:InternalEnumeratePaths(System.String,System.String,int,System.IO.EnumerationOptions):System.Collections.Generic.IEnumerable`1[System.String]
        mov      rsi, rax
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:.ctor(System.Collections.Generic.IEnumerable`1[System.__Canon]):this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:.ctor(System.Collections.Generic.IEnumerable`1[System.__Canon]):this
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
        mov      r14, rax
        xor      r13d, r13d
        jmp      SHORT G_M37624_IG14
 						;; size=105 bbWeight=1 PerfScore 17.75
 G_M37624_IG12:
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:AddWithResize(System.__Canon):this
        call     [rax]System.Collections.Generic.List`1[System.__Canon]:AddWithResize(System.__Canon):this
 						;; size=15 bbWeight=2 PerfScore 7.00
 G_M37624_IG13:
        inc      r13d
 						;; size=3 bbWeight=4 PerfScore 1.00
 G_M37624_IG14:
        mov      edi, dword ptr [r14+0x08]
        cmp      edi, r13d
-       jle      G_M37624_IG18
-						;; size=13 bbWeight=8 PerfScore 26.00
+       jle      SHORT G_M37624_IG18
+						;; size=9 bbWeight=8 PerfScore 26.00
 G_M37624_IG15:
        mov      edi, r13d
        mov      rsi, gword ptr [r14+8*rdi+0x10]
-       mov      edi, dword ptr [rsi+0x08]
-       cmp      edi, 5
+       cmp      dword ptr [rsi+0x08], 5
        jl       SHORT G_M37624_IG17
-						;; size=16 bbWeight=4 PerfScore 22.00
+						;; size=14 bbWeight=4 PerfScore 25.00
 G_M37624_IG16:
-       mov      edi, edi
+       mov      edi, dword ptr [rsi+0x08]
        lea      rdi, bword ptr [rsi+2*rdi-0x0A]
        mov      rax, qword ptr [rdi+0x0C]
        mov      rcx, 0xD1FFAB1E
        xor      rcx, rax
        movzx    rdi, word  ptr [rdi+0x14]
        mov      edx, edi
        xor      edx, 116
        or       rcx, rdx
-       sete     cl
-       movzx    rcx, cl
-       test     ecx, ecx
-       jne      SHORT G_M37624_IG13
+       je       SHORT G_M37624_IG13
        mov      rcx, 0xD1FFAB1E
        xor      rax, rcx
        xor      edi, 107
        or       rdi, rax
-       sete     dil
-       movzx    rdi, dil
-       test     edi, edi
-       jne      SHORT G_M37624_IG13
-						;; size=77 bbWeight=2 PerfScore 25.00
+       je       SHORT G_M37624_IG13
+						;; size=60 bbWeight=1 PerfScore 11.25
 G_M37624_IG17:
        inc      dword ptr [r15+0x14]
        mov      rbx, gword ptr [r15+0x08]
        mov      r12d, dword ptr [r15+0x10]
        mov      edi, dword ptr [rbx+0x08]
        cmp      edi, r12d
-       jbe      G_M37624_IG12
+       jbe      SHORT G_M37624_IG12
        lea      edi, [r12+0x01]
        mov      dword ptr [r15+0x10], edi
        mov      edi, r12d
        lea      rdi, bword ptr [rbx+8*rdi+0x10]
        call     CORINFO_HELP_ASSIGN_REF
        jmp      G_M37624_IG13
-						;; size=51 bbWeight=2 PerfScore 32.00
+						;; size=47 bbWeight=2 PerfScore 32.00
 G_M37624_IG18:
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
 						;; size=13 bbWeight=1 PerfScore 0.50
 G_M37624_IG19:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax]System.Collections.Generic.List`1[System.__Canon]:ToArray():System.__Canon[]:this
 						;; size=17 bbWeight=1 PerfScore 7.25
 G_M37624_IG20:
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M37624_IG03
 						;; size=20 bbWeight=0 PerfScore 0.00
 G_M37624_IG21:
        mov      rdi, 0xD1FFAB1E      ; System.IO.EnumerationOptions
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M37624_IG04
 						;; size=27 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 732, prolog size 16, PerfScore 290.75, instruction count 172, allocated bytes for code 732 (MethodHash=d50c6d07) for method System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[] (FullOpts)
+; Total bytes of code 675, prolog size 16, PerfScore 269.25, instruction count 158, allocated bytes for code 675 (MethodHash=d50c6d07) for method System.IO.Ports.SerialPort:GetPortNames_FreeBSD():System.String[] (FullOpts)
 ; ============================================================

-20 (-3.13 % of base) - System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String

 ; Assembly listing for method System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 16 single block inlinees; 16 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 arg0         [V00,T00] ( 15,  8.50)     ref  ->  rbx         class-hnd single-def <System.String>
-;  V01 arg1         [V01,T01] (  8,  5.50)     ref  ->  rsi         class-hnd single-def <System.String>
+;  V01 arg1         [V01,T01] (  8,  5   )     ref  ->  rsi         class-hnd single-def <System.String>
 ;  V02 arg2         [V02,T03] (  4,  3   )     int  ->  r15         single-def
 ;* V03 loc0         [V03    ] (  0,  0   )   byref  ->  zero-ref   
 ;* V04 loc1         [V04    ] (  0,  0   )     int  ->  zero-ref   
 ;  V05 loc2         [V05    ] ( 10,  5   )  struct (16) [rbp-0x28]  do-not-enreg[SF] must-init ld-addr-op <System.ReadOnlySpan`1[char]>
 ;* V06 loc3         [V06    ] (  0,  0   )   byref  ->  zero-ref   
 ;  V07 loc4         [V07    ] ( 21, 10.50)  struct (40) [rbp-0x50]  do-not-enreg[XSF] must-init addr-exposed ld-addr-op <System.Runtime.CompilerServices.DefaultInterpolatedStringHandler>
 ;# V08 OutArgs      [V08    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V09 tmp1         [V09    ] (  0,  0   )     ref  ->  zero-ref    single-def "spilling varStr"
-;  V10 tmp2         [V10,T09] (  3,  3   )   byref  ->  rdi         single-def "clonning data ptr"
-;  V11 tmp3         [V11,T19] (  2,  2   )     int  ->  rdi         "spilling unroll qmark"
+;  V10 tmp2         [V10,T23] (  3,  1.50)   byref  ->  rdi         single-def "clonning data ptr"
+;* V11 tmp3         [V11,T35] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
 ;* V12 tmp4         [V12    ] (  0,  0   )     ref  ->  zero-ref    single-def "spilling varStr"
-;  V13 tmp5         [V13,T12] (  2,  2   )   byref  ->  rdi         single-def "clonning data ptr"
-;  V14 tmp6         [V14,T20] (  2,  2   )     int  ->  rdi         "spilling unroll qmark"
+;  V13 tmp5         [V13,T32] (  2,  1   )   byref  ->  rdi         single-def "clonning data ptr"
+;* V14 tmp6         [V14,T36] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
 ;* V15 tmp7         [V15    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "impAppendStmt" <System.ReadOnlySpan`1[char]>
 ;* V16 tmp8         [V16    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[char]>
 ;* V17 tmp9         [V17    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "impAppendStmt" <System.ReadOnlySpan`1[char]>
 ;* V18 tmp10        [V18    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.ReadOnlySpan`1[char]>
 ;* V19 tmp11        [V19    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V20 tmp12        [V20    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.ReadOnlySpan`1[char]>
-;  V21 tmp13        [V21,T13] (  2,  2   )   byref  ->  rdi         single-def "Inlining Arg"
-;  V22 tmp14        [V22,T21] (  2,  2   )     int  ->  rdx         "Inlining Arg"
+;  V21 tmp13        [V21,T11] (  2,  2   )   byref  ->  rdi         single-def "Inlining Arg"
+;  V22 tmp14        [V22,T17] (  2,  2   )     int  ->  rdx         "Inlining Arg"
 ;* V23 tmp15        [V23    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[char]>
 ;* V24 tmp16        [V24    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V25 tmp17        [V25    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.ReadOnlySpan`1[char]>
-;  V26 tmp18        [V26,T14] (  2,  2   )   byref  ->  rsi         single-def "Inlining Arg"
-;  V27 tmp19        [V27,T22] (  2,  2   )     int  ->  rcx         "Inlining Arg"
-;  V28 tmp20        [V28,T10] (  3,  3   )     int  ->  rcx         "Inlining Arg"
+;  V26 tmp18        [V26,T12] (  2,  2   )   byref  ->  rsi         single-def "Inlining Arg"
+;  V27 tmp19        [V27,T18] (  2,  2   )     int  ->  rcx         "Inlining Arg"
+;  V28 tmp20        [V28,T09] (  3,  3   )     int  ->  rcx         "Inlining Arg"
 ;* V29 tmp21        [V29    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V30 tmp22        [V30    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V31 tmp23        [V31    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V32 tmp24        [V32    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.ReadOnlySpan`1[char]>
-;  V33 tmp25        [V33,T15] (  2,  2   )   byref  ->  rdi         single-def "Inlining Arg"
-;  V34 tmp26        [V34,T23] (  2,  2   )     int  ->  rdx         "Inlining Arg"
+;  V33 tmp25        [V33,T13] (  2,  2   )   byref  ->  rdi         single-def "Inlining Arg"
+;  V34 tmp26        [V34,T19] (  2,  2   )     int  ->  rdx         "Inlining Arg"
 ;* V35 tmp27        [V35    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[char]>
 ;* V36 tmp28        [V36    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V37 tmp29        [V37    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline ldloca(s) first use temp" <System.ReadOnlySpan`1[char]>
-;  V38 tmp30        [V38,T16] (  2,  2   )   byref  ->  rsi         single-def "Inlining Arg"
-;  V39 tmp31        [V39,T24] (  2,  2   )     int  ->  r14         "Inlining Arg"
-;  V40 tmp32        [V40,T11] (  3,  3   )     int  ->  rcx         "Inlining Arg"
+;  V38 tmp30        [V38,T14] (  2,  2   )   byref  ->  rsi         single-def "Inlining Arg"
+;  V39 tmp31        [V39,T20] (  2,  2   )     int  ->  r14         "Inlining Arg"
+;  V40 tmp32        [V40,T10] (  3,  3   )     int  ->  rcx         "Inlining Arg"
 ;* V41 tmp33        [V41    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[char]>
 ;* V42 tmp34        [V42    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V43 tmp35        [V43    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "impAppendStmt" <System.Buffers.SharedArrayPool`1[char]>
 ;  V44 tmp36        [V44,T02] (  5,  5   )     ref  ->  rax         class-hnd single-def "dup spill" <char[]>
 ;* V45 tmp37        [V45    ] (  0,  0   )     ref  ->  zero-ref    class-hnd single-def "Inline stloc first use temp" <char[]>
 ;* V46 tmp38        [V46    ] (  0,  0   )     int  ->  zero-ref    "Inline return value spill temp"
 ;* V47 tmp39        [V47    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[char]>
 ;* V48 tmp40        [V48    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[char]>
 ;  V49 tmp41        [V49,T07] (  4,  4   )     int  ->  rdi         "Inlining Arg"
 ;* V50 tmp42        [V50    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[char]>
-;  V51 tmp43        [V51,T17] (  2,  2   )   byref  ->  rax         single-def "Inlining Arg"
-;  V52 tmp44        [V52,T25] (  2,  2   )     int  ->  rsi         "Inlining Arg"
+;  V51 tmp43        [V51,T15] (  2,  2   )   byref  ->  rax         single-def "Inlining Arg"
+;  V52 tmp44        [V52,T21] (  2,  2   )     int  ->  rsi         "Inlining Arg"
 ;* V53 tmp45        [V53,T37] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V54 tmp46        [V54    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[char]>
 ;* V55 tmp47        [V55    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V56 tmp48        [V56    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V57 tmp49        [V57    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
 ;* V58 tmp50        [V58    ] (  0,  0   )  struct (16) zero-ref    "spilled call-like call argument" <System.Span`1[char]>
 ;  V59 tmp51        [V59,T08] (  4,  4   )     int  ->  rdi         "Inlining Arg"
 ;* V60 tmp52        [V60    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Span`1[char]>
-;  V61 tmp53        [V61,T18] (  2,  2   )   byref  ->  rbx         single-def "Inlining Arg"
-;  V62 tmp54        [V62,T26] (  2,  2   )     int  ->  rsi         "Inlining Arg"
+;  V61 tmp53        [V61,T16] (  2,  2   )   byref  ->  rbx         single-def "Inlining Arg"
+;  V62 tmp54        [V62,T22] (  2,  2   )     int  ->  rsi         "Inlining Arg"
 ;* V63 tmp55        [V63,T38] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V64 tmp56        [V64    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[char]>
 ;* V65 tmp57        [V65    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V66 tmp58        [V66    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;  V67 tmp59        [V67,T05] (  8,  4   )   byref  ->  [rbp-0x28]  do-not-enreg[] "field V05._reference (fldOffset=0x0)" P-DEP
-;  V68 tmp60        [V68,T06] (  8,  4   )     int  ->  [rbp-0x20]  do-not-enreg[] "field V05._length (fldOffset=0x8)" P-DEP
-;  V69 tmp61        [V69,T27] (  3,  1.50)   byref  ->  rdi         "field V15._reference (fldOffset=0x0)" P-INDEP
-;  V70 tmp62        [V70,T30] (  3,  1.50)     int  ->  rdx         "field V15._length (fldOffset=0x8)" P-INDEP
+;  V67 tmp59        [V67,T04] (  8,  4   )   byref  ->  [rbp-0x28]  do-not-enreg[] "field V05._reference (fldOffset=0x0)" P-DEP
+;  V68 tmp60        [V68,T05] (  8,  4   )     int  ->  [rbp-0x20]  do-not-enreg[] "field V05._length (fldOffset=0x8)" P-DEP
+;  V69 tmp61        [V69,T24] (  3,  1.50)   byref  ->  rdi         "field V15._reference (fldOffset=0x0)" P-INDEP
+;  V70 tmp62        [V70,T27] (  3,  1.50)     int  ->  rdx         "field V15._length (fldOffset=0x8)" P-INDEP
 ;* V71 tmp63        [V71    ] (  0,  0   )   byref  ->  zero-ref    "field V16._reference (fldOffset=0x0)" P-INDEP
 ;* V72 tmp64        [V72    ] (  0,  0   )     int  ->  zero-ref    "field V16._length (fldOffset=0x8)" P-INDEP
-;  V73 tmp65        [V73,T28] (  3,  1.50)   byref  ->  rdi         "field V17._reference (fldOffset=0x0)" P-INDEP
-;  V74 tmp66        [V74,T31] (  3,  1.50)     int  ->  rdx         "field V17._length (fldOffset=0x8)" P-INDEP
+;  V73 tmp65        [V73,T25] (  3,  1.50)   byref  ->  rdi         "field V17._reference (fldOffset=0x0)" P-INDEP
+;  V74 tmp66        [V74,T28] (  3,  1.50)     int  ->  rdx         "field V17._length (fldOffset=0x8)" P-INDEP
 ;* V75 tmp67        [V75    ] (  0,  0   )   byref  ->  zero-ref    "field V18._reference (fldOffset=0x0)" P-INDEP
 ;* V76 tmp68        [V76    ] (  0,  0   )     int  ->  zero-ref    "field V18._length (fldOffset=0x8)" P-INDEP
 ;* V77 tmp69        [V77    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V19._reference (fldOffset=0x0)" P-INDEP
 ;* V78 tmp70        [V78    ] (  0,  0   )     int  ->  zero-ref    "field V19._length (fldOffset=0x8)" P-INDEP
 ;* V79 tmp71        [V79    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V20._reference (fldOffset=0x0)" P-INDEP
 ;* V80 tmp72        [V80    ] (  0,  0   )     int  ->  zero-ref    "field V20._length (fldOffset=0x8)" P-INDEP
 ;* V81 tmp73        [V81    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V23._reference (fldOffset=0x0)" P-INDEP
 ;* V82 tmp74        [V82    ] (  0,  0   )     int  ->  zero-ref    "field V23._length (fldOffset=0x8)" P-INDEP
 ;* V83 tmp75        [V83    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V24._reference (fldOffset=0x0)" P-INDEP
 ;* V84 tmp76        [V84    ] (  0,  0   )     int  ->  zero-ref    "field V24._length (fldOffset=0x8)" P-INDEP
 ;* V85 tmp77        [V85    ] (  0,  0   )   byref  ->  zero-ref    "field V25._reference (fldOffset=0x0)" P-INDEP
 ;* V86 tmp78        [V86    ] (  0,  0   )     int  ->  zero-ref    "field V25._length (fldOffset=0x8)" P-INDEP
-;  V87 tmp79        [V87,T35] (  2,  1   )   byref  ->  rax         single-def "field V29._reference (fldOffset=0x0)" P-INDEP
+;  V87 tmp79        [V87,T33] (  2,  1   )   byref  ->  rax         single-def "field V29._reference (fldOffset=0x0)" P-INDEP
 ;* V88 tmp80        [V88    ] (  0,  0   )     int  ->  zero-ref    "field V29._length (fldOffset=0x8)" P-INDEP
 ;* V89 tmp81        [V89    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V31._reference (fldOffset=0x0)" P-INDEP
 ;* V90 tmp82        [V90    ] (  0,  0   )     int  ->  zero-ref    "field V31._length (fldOffset=0x8)" P-INDEP
 ;* V91 tmp83        [V91    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V32._reference (fldOffset=0x0)" P-INDEP
 ;* V92 tmp84        [V92    ] (  0,  0   )     int  ->  zero-ref    "field V32._length (fldOffset=0x8)" P-INDEP
 ;* V93 tmp85        [V93    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V35._reference (fldOffset=0x0)" P-INDEP
 ;* V94 tmp86        [V94    ] (  0,  0   )     int  ->  zero-ref    "field V35._length (fldOffset=0x8)" P-INDEP
 ;* V95 tmp87        [V95    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V36._reference (fldOffset=0x0)" P-INDEP
 ;* V96 tmp88        [V96    ] (  0,  0   )     int  ->  zero-ref    "field V36._length (fldOffset=0x8)" P-INDEP
 ;* V97 tmp89        [V97    ] (  0,  0   )   byref  ->  zero-ref    "field V37._reference (fldOffset=0x0)" P-INDEP
 ;* V98 tmp90        [V98    ] (  0,  0   )     int  ->  zero-ref    "field V37._length (fldOffset=0x8)" P-INDEP
-;  V99 tmp91        [V99,T36] (  2,  1   )   byref  ->  rax         single-def "field V41._reference (fldOffset=0x0)" P-INDEP
+;  V99 tmp91        [V99,T34] (  2,  1   )   byref  ->  rax         single-def "field V41._reference (fldOffset=0x0)" P-INDEP
 ;* V100 tmp92       [V100    ] (  0,  0   )     int  ->  zero-ref    "field V41._length (fldOffset=0x8)" P-INDEP
-;  V101 tmp93       [V101,T29] (  3,  1.50)   byref  ->  rdi         "field V47._reference (fldOffset=0x0)" P-INDEP
-;  V102 tmp94       [V102,T32] (  3,  1.50)     int  ->  rsi         "field V47._length (fldOffset=0x8)" P-INDEP
+;  V101 tmp93       [V101,T26] (  3,  1.50)   byref  ->  rdi         "field V47._reference (fldOffset=0x0)" P-INDEP
+;  V102 tmp94       [V102,T29] (  3,  1.50)     int  ->  rsi         "field V47._length (fldOffset=0x8)" P-INDEP
 ;* V103 tmp95       [V103    ] (  0,  0   )   byref  ->  zero-ref    "field V48._reference (fldOffset=0x0)" P-INDEP
 ;* V104 tmp96       [V104    ] (  0,  0   )     int  ->  zero-ref    "field V48._length (fldOffset=0x8)" P-INDEP
 ;* V105 tmp97       [V105    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V50._reference (fldOffset=0x0)" P-INDEP
 ;* V106 tmp98       [V106    ] (  0,  0   )     int  ->  zero-ref    "field V50._length (fldOffset=0x8)" P-INDEP
 ;* V107 tmp99       [V107    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V54._reference (fldOffset=0x0)" P-INDEP
 ;* V108 tmp100      [V108    ] (  0,  0   )     int  ->  zero-ref    "field V54._length (fldOffset=0x8)" P-INDEP
 ;* V109 tmp101      [V109    ] (  0,  0   )   byref  ->  zero-ref    "field V58._reference (fldOffset=0x0)" P-INDEP
 ;* V110 tmp102      [V110    ] (  0,  0   )     int  ->  zero-ref    "field V58._length (fldOffset=0x8)" P-INDEP
 ;* V111 tmp103      [V111    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V60._reference (fldOffset=0x0)" P-INDEP
 ;* V112 tmp104      [V112    ] (  0,  0   )     int  ->  zero-ref    "field V60._length (fldOffset=0x8)" P-INDEP
 ;* V113 tmp105      [V113    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V64._reference (fldOffset=0x0)" P-INDEP
 ;* V114 tmp106      [V114    ] (  0,  0   )     int  ->  zero-ref    "field V64._length (fldOffset=0x8)" P-INDEP
-;  V115 cse0        [V115,T04] (  7,  4.50)     int  ->  r14         "CSE #01: moderate"
-;  V116 cse1        [V116,T33] (  3,  1.50)     int  ->  rsi         "CSE #07: moderate"
-;  V117 cse2        [V117,T34] (  3,  1.50)     int  ->  rsi         "CSE #08: moderate"
+;  V115 cse0        [V115,T06] (  7,  4   )     int  ->  r14         "CSE #01: moderate"
+;  V116 cse1        [V116,T30] (  3,  1.50)     int  ->  rsi         "CSE #07: moderate"
+;  V117 cse2        [V117,T31] (  3,  1.50)     int  ->  rsi         "CSE #08: moderate"
 ;
 ; Lcl frame size = 56
 
 G_M38999_IG01:
        push     rbp
        push     r15
        push     r14
        push     rbx
        sub      rsp, 56
        lea      rbp, [rsp+0x50]
        vxorps   xmm8, xmm8, xmm8
        vmovdqu  ymmword ptr [rbp-0x50], ymm8
        vmovdqa  xmmword ptr [rbp-0x30], xmm8
        xor      eax, eax
        mov      qword ptr [rbp-0x20], rax
        mov      rbx, rdi
        mov      r15d, edx
 						;; size=42 bbWeight=1 PerfScore 10.83
 G_M38999_IG02:
        mov      r14d, dword ptr [rsi+0x08]
        cmp      r14d, 5
        jl       SHORT G_M38999_IG04
 						;; size=10 bbWeight=1 PerfScore 3.25
 G_M38999_IG03:
        mov      edi, r14d
        lea      rdi, bword ptr [rsi+2*rdi-0x0A]
        mov      rax, 0xD1FFAB1E
        xor      rax, qword ptr [rdi+0x0C]
        movzx    rdi, word  ptr [rdi+0x14]
        xor      edi, 116
        or       rdi, rax
-       sete     dil
-       movzx    rdi, dil
-       test     edi, edi
-       jne      G_M38999_IG20
-						;; size=48 bbWeight=0.50 PerfScore 4.75
+       je       G_M38999_IG21
+						;; size=38 bbWeight=0.25 PerfScore 2.00
 G_M38999_IG04:
        cmp      r14d, 4
-       jl       SHORT G_M38999_IG05
+       jl       SHORT G_M38999_IG06
+						;; size=6 bbWeight=0.50 PerfScore 0.62
+G_M38999_IG05:
        mov      edi, r14d
        lea      rdi, bword ptr [rsi+2*rdi-0x08]
        mov      rax, 0xD1FFAB1E
        cmp      qword ptr [rdi+0x0C], rax
-       sete     dil
-       movzx    rdi, dil
-       test     edi, edi
-       jne      G_M38999_IG16
-						;; size=44 bbWeight=0.50 PerfScore 4.12
-G_M38999_IG05:
+       je       G_M38999_IG17
+						;; size=28 bbWeight=0.25 PerfScore 1.38
+G_M38999_IG06:
        test     r15d, r15d
-       jne      SHORT G_M38999_IG07
+       jne      SHORT G_M38999_IG08
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.String:Concat(System.String,System.String):System.String
        call     [rax]System.String:Concat(System.String,System.String):System.String
        nop      
 						;; size=21 bbWeight=0.50 PerfScore 2.50
-G_M38999_IG06:
+G_M38999_IG07:
        add      rsp, 56
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=11 bbWeight=0.50 PerfScore 1.62
-G_M38999_IG07:
+G_M38999_IG08:
        xor      rdi, rdi
        mov      gword ptr [rbp-0x50], rdi
        mov      rdi, 0xD1FFAB1E      ; const ptr
        mov      rdi, gword ptr [rdi]
        mov      esi, 256
        mov      rax, 0xD1FFAB1E      ; code for System.Buffers.SharedArrayPool`1[char]:Rent(int):char[]:this
        call     [rax]System.Buffers.SharedArrayPool`1[char]:Rent(int):char[]:this
        mov      gword ptr [rbp-0x48], rax
        test     rax, rax
-       je       SHORT G_M38999_IG08
+       je       SHORT G_M38999_IG09
        lea      rdi, bword ptr [rax+0x10]
        mov      esi, dword ptr [rax+0x08]
-       jmp      SHORT G_M38999_IG09
+       jmp      SHORT G_M38999_IG10
 						;; size=54 bbWeight=0.50 PerfScore 6.88
-G_M38999_IG08:
+G_M38999_IG09:
        xor      rdi, rdi
        xor      esi, esi
 						;; size=4 bbWeight=0.50 PerfScore 0.25
-G_M38999_IG09:
+G_M38999_IG10:
        mov      bword ptr [rbp-0x38], rdi
        mov      dword ptr [rbp-0x30], esi
        xor      edi, edi
        mov      dword ptr [rbp-0x40], edi
        mov      byte  ptr [rbp-0x3C], 0
        cmp      byte  ptr [rbp-0x3C], 0
-       jne      SHORT G_M38999_IG10
+       jne      SHORT G_M38999_IG11
        test     rbx, rbx
-       je       SHORT G_M38999_IG10
+       je       SHORT G_M38999_IG11
        mov      edi, dword ptr [rbp-0x40]
        mov      esi, dword ptr [rbp-0x30]
        cmp      edi, esi
-       ja       G_M38999_IG24
+       ja       G_M38999_IG25
        mov      rax, bword ptr [rbp-0x38]
        mov      ecx, edi
        lea      rax, bword ptr [rax+2*rcx]
        sub      esi, edi
        cmp      dword ptr [rbx+0x08], esi
-       jbe      SHORT G_M38999_IG11
+       jbe      SHORT G_M38999_IG12
 						;; size=58 bbWeight=0.50 PerfScore 8.88
-G_M38999_IG10:
+G_M38999_IG11:
        lea      rdi, [rbp-0x50]
        mov      rsi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:AppendFormattedSlow(System.String):this
        call     [rax]System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:AppendFormattedSlow(System.String):this
-       jmp      SHORT G_M38999_IG12
+       jmp      SHORT G_M38999_IG13
 						;; size=21 bbWeight=0.50 PerfScore 3.00
-G_M38999_IG11:
+G_M38999_IG12:
        mov      edx, dword ptr [rbx+0x08]
        add      rdx, rdx
        lea      rsi, bword ptr [rbx+0x0C]
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.SpanHelpers:Memmove(byref,byref,nuint)
        call     [rax]System.SpanHelpers:Memmove(byref,byref,nuint)
        mov      edi, dword ptr [rbp-0x40]
        add      edi, dword ptr [rbx+0x08]
        mov      dword ptr [rbp-0x40], edi
 						;; size=34 bbWeight=0.50 PerfScore 5.62
-G_M38999_IG12:
+G_M38999_IG13:
        mov      edi, dword ptr [rbp-0x40]
        mov      esi, dword ptr [rbp-0x30]
        cmp      edi, esi
-       ja       G_M38999_IG24
+       ja       G_M38999_IG25
        mov      rax, bword ptr [rbp-0x38]
        mov      ecx, edi
        lea      rbx, bword ptr [rax+2*rcx]
        sub      esi, edi
        cmp      esi, 4
-       jae      SHORT G_M38999_IG13
+       jae      SHORT G_M38999_IG14
        lea      rdi, [rbp-0x50]
        mov      rsi, 0xD1FFAB1E      ; 'task'
        mov      rax, 0xD1FFAB1E      ; code for System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:GrowThenCopyString(System.String):this
        call     [rax]System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:GrowThenCopyString(System.String):this
-       jmp      SHORT G_M38999_IG14
+       jmp      SHORT G_M38999_IG15
 						;; size=59 bbWeight=0.50 PerfScore 6.25
-G_M38999_IG13:
+G_M38999_IG14:
        mov      rdi, 0xD1FFAB1E
        mov      qword ptr [rbx], rdi
        mov      edi, dword ptr [rbp-0x40]
        add      edi, 4
        mov      dword ptr [rbp-0x40], edi
 						;; size=22 bbWeight=0.50 PerfScore 1.75
-G_M38999_IG14:
+G_M38999_IG15:
        lea      rdi, [rbp-0x50]
        mov      esi, r15d
        mov      rax, 0xD1FFAB1E      ; code for System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:AppendFormatted[int](int):this
        call     [rax]System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:AppendFormatted[int](int):this
        lea      rdi, [rbp-0x50]
        mov      rax, 0xD1FFAB1E      ; code for System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:ToStringAndClear():System.String:this
        call     [rax]System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:ToStringAndClear():System.String:this
        nop      
 						;; size=36 bbWeight=0.50 PerfScore 4.00
-G_M38999_IG15:
+G_M38999_IG16:
        add      rsp, 56
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=11 bbWeight=0.50 PerfScore 1.62
-G_M38999_IG16:
+G_M38999_IG17:
        test     rbx, rbx
-       je       SHORT G_M38999_IG17
+       je       SHORT G_M38999_IG18
        lea      rdi, bword ptr [rbx+0x0C]
        mov      edx, dword ptr [rbx+0x08]
-       jmp      SHORT G_M38999_IG18
+       jmp      SHORT G_M38999_IG19
 						;; size=14 bbWeight=0.50 PerfScore 2.88
-G_M38999_IG17:
+G_M38999_IG18:
        xor      rdi, rdi
        xor      edx, edx
 						;; size=4 bbWeight=0.50 PerfScore 0.25
-G_M38999_IG18:
+G_M38999_IG19:
        add      rsi, 12
        mov      bword ptr [rbp-0x28], rsi
        mov      dword ptr [rbp-0x20], r14d
        mov      ecx, dword ptr [rbp-0x20]
        add      ecx, -4
        cmp      ecx, dword ptr [rbp-0x20]
-       ja       SHORT G_M38999_IG24
+       ja       SHORT G_M38999_IG25
        mov      rax, bword ptr [rbp-0x28]
        mov      esi, edx
        mov      rdx, rax
        mov      rax, 0xD1FFAB1E      ; code for System.String:Concat(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char]):System.String
        call     [rax]System.String:Concat(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char]):System.String
        nop      
 						;; size=45 bbWeight=0.50 PerfScore 5.75
-G_M38999_IG19:
+G_M38999_IG20:
        add      rsp, 56
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=11 bbWeight=0.50 PerfScore 1.62
-G_M38999_IG20:
+G_M38999_IG21:
        test     rbx, rbx
-       je       SHORT G_M38999_IG21
+       je       SHORT G_M38999_IG22
        lea      rdi, bword ptr [rbx+0x0C]
        mov      edx, dword ptr [rbx+0x08]
-       jmp      SHORT G_M38999_IG22
+       jmp      SHORT G_M38999_IG23
 						;; size=14 bbWeight=0.50 PerfScore 2.88
-G_M38999_IG21:
+G_M38999_IG22:
        xor      rdi, rdi
        xor      edx, edx
 						;; size=4 bbWeight=0.50 PerfScore 0.25
-G_M38999_IG22:
+G_M38999_IG23:
        add      rsi, 12
        mov      ecx, r14d
        mov      bword ptr [rbp-0x28], rsi
        mov      dword ptr [rbp-0x20], ecx
        mov      ecx, dword ptr [rbp-0x20]
        add      ecx, -5
        cmp      ecx, dword ptr [rbp-0x20]
-       ja       SHORT G_M38999_IG24
+       ja       SHORT G_M38999_IG25
        mov      rax, bword ptr [rbp-0x28]
        mov      esi, edx
        mov      rdx, rax
        mov      rax, 0xD1FFAB1E      ; code for System.String:Concat(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char]):System.String
        call     [rax]System.String:Concat(System.ReadOnlySpan`1[char],System.ReadOnlySpan`1[char]):System.String
        nop      
 						;; size=47 bbWeight=0.50 PerfScore 5.88
-G_M38999_IG23:
+G_M38999_IG24:
        add      rsp, 56
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=11 bbWeight=0.50 PerfScore 1.62
-G_M38999_IG24:
+G_M38999_IG25:
        mov      rax, 0xD1FFAB1E      ; code for System.ThrowHelper:ThrowArgumentOutOfRangeException()
        call     [rax]System.ThrowHelper:ThrowArgumentOutOfRangeException()
        int3     
 						;; size=13 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 638, prolog size 36, PerfScore 86.46, instruction count 187, allocated bytes for code 638 (MethodHash=f71167a8) for method System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String (FullOpts)
+; Total bytes of code 618, prolog size 36, PerfScore 81.58, instruction count 181, allocated bytes for code 618 (MethodHash=f71167a8) for method System.Diagnostics.Tracing.ActivityTracker:NormalizeActivityName(System.String,System.String,int):System.String (FullOpts)
 ; ============================================================

-18 (-4.74 % of base) - System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder)

 ; Assembly listing for method System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder) (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 7 single block inlinees; 6 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T01] ( 18, 27   )     ref  ->  rbx         class-hnd <System.String>
+;  V00 arg0         [V00,T01] ( 16, 19.50)     ref  ->  rbx         class-hnd <System.String>
 ;  V01 arg1         [V01,T03] (  8, 15   )     ref  ->  r15         class-hnd single-def <System.Text.StringBuilder>
-;  V02 loc0         [V02,T12] (  5,  9.50)     int  ->  r14        
-;* V03 loc1         [V03,T16] (  0,  0   )     int  ->  zero-ref   
+;  V02 loc0         [V02,T10] (  5,  9.50)     int  ->  r14        
+;* V03 loc1         [V03,T15] (  0,  0   )     int  ->  zero-ref   
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V05 tmp1         [V05    ] (  0,  0   )     ref  ->  zero-ref    "spilling varStr"
-;  V06 tmp2         [V06,T05] (  2, 16   )   byref  ->  rdi         "clonning data ptr"
-;  V07 tmp3         [V07,T06] (  2, 16   )     int  ->  rdi         "spilling unroll qmark"
-;* V08 tmp4         [V08,T17] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;  V09 tmp5         [V09,T10] (  4, 10   )     ref  ->  r12         class-hnd exact "Inline return value spill temp" <System.String>
+;  V06 tmp2         [V06,T12] (  2,  4   )   byref  ->  rsi         single-def "clonning data ptr"
+;* V07 tmp3         [V07,T14] (  0,  0   )     int  ->  zero-ref    "spilling unroll qmark"
+;* V08 tmp4         [V08,T16] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
+;  V09 tmp5         [V09,T08] (  4, 10   )     ref  ->  r12         class-hnd exact "Inline return value spill temp" <System.String>
 ;  V10 tmp6         [V10,T00] (  7, 36   )     int  ->  rdx         "Inlining Arg"
-;  V11 tmp7         [V11,T14] (  2,  4   )    long  ->  r13         "Inline stloc first use temp"
+;  V11 tmp7         [V11,T13] (  2,  4   )    long  ->  r13         "Inline stloc first use temp"
 ;  V12 tmp8         [V12,T04] (  4, 16   )     ref  ->  r12         class-hnd exact "dup spill" <System.String>
 ;* V13 tmp9         [V13    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.Runtime.CompilerServices.TypeHandle>
 ;* V14 tmp10        [V14    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
 ;* V15 tmp11        [V15    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.Runtime.CompilerServices.TypeHandle>
 ;* V16 tmp12        [V16    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V17 tmp13        [V17    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;  V18 tmp14        [V18,T11] (  3, 10   )     ref  ->  r14         class-hnd "Inline stloc first use temp" <char[]>
-;  V19 tmp15        [V19,T08] (  4, 12   )     int  ->  r13         "Inline stloc first use temp"
-;  V20 tmp16        [V20,T09] (  2, 12   )   byref  ->  rsi         "Inlining Arg"
-;  V21 tmp17        [V21,T13] (  3,  6   )   byref  ->  rax         "Inline stloc first use temp"
+;  V18 tmp14        [V18,T09] (  3, 10   )     ref  ->  r14         class-hnd "Inline stloc first use temp" <char[]>
+;  V19 tmp15        [V19,T06] (  4, 12   )     int  ->  r13         "Inline stloc first use temp"
+;  V20 tmp16        [V20,T07] (  2, 12   )   byref  ->  rsi         "Inlining Arg"
+;  V21 tmp17        [V21,T11] (  3,  6   )   byref  ->  rax         "Inline stloc first use temp"
 ;* V22 tmp18        [V22    ] (  0,  0   )    long  ->  zero-ref    "field V13.m_asTAddr (fldOffset=0x0)" P-INDEP
 ;* V23 tmp19        [V23    ] (  0,  0   )    long  ->  zero-ref    "field V15.m_asTAddr (fldOffset=0x0)" P-INDEP
-;  V24 cse0         [V24,T02] (  5, 18   )     int  ->  rsi         "CSE #02: aggressive"
-;  V25 cse1         [V25,T15] (  3,  1.50)     int  ->  rsi         "CSE #01: moderate"
-;  V26 rat0         [V26,T07] (  4, 12.50)     int  ->  rbx         "Trip count IV"
+;  V24 cse0         [V24,T02] (  7, 19.50)     int  ->  r13         "CSE #01: aggressive"
+;  V25 rat0         [V25,T05] (  4, 12.50)     int  ->  rbx         "Trip count IV"
 ;
 ; Lcl frame size = 8
 
 G_M8710_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        push     rax
        lea      rbp, [rsp+0x30]
        mov      rbx, rdi
        mov      r15, rsi
 						;; size=22 bbWeight=1 PerfScore 8.00
 G_M8710_IG02:
        test     rbx, rbx
-       je       G_M8710_IG15
+       je       G_M8710_IG17
 						;; size=9 bbWeight=1 PerfScore 1.25
 G_M8710_IG03:
-       mov      esi, dword ptr [rbx+0x08]
-       test     esi, esi
-       je       G_M8710_IG15
+       cmp      dword ptr [rbx+0x08], 0
+       je       G_M8710_IG17
        xor      r14d, r14d
-       cmp      esi, 2
-       jl       G_M8710_IG09
-						;; size=23 bbWeight=0.50 PerfScore 2.38
+       jmp      SHORT G_M8710_IG06
+						;; size=15 bbWeight=0.50 PerfScore 3.12
 G_M8710_IG04:
-       mov      esi, dword ptr [rbx+0x08]
-       mov      edi, esi
-       lea      rdi, bword ptr [rbx+2*rdi-0x04]
-       cmp      dword ptr [rdi+0x0C], 0xD1FFAB1E
-       sete     dil
-       movzx    rdi, dil
-       test     edi, edi
-       je       SHORT G_M8710_IG09
-       inc      r14d
-       lea      edx, [rsi-0x02]
-       cmp      esi, edx
-       jb       G_M8710_IG16
-       test     edx, edx
-       je       SHORT G_M8710_IG07
-						;; size=47 bbWeight=4 PerfScore 48.00
-G_M8710_IG05:
-       cmp      esi, edx
-       je       SHORT G_M8710_IG06
        mov      r13d, edx
        movsxd   rsi, edx
        mov      rdi, 0xD1FFAB1E      ; System.String
        call     System.String:FastAllocateString(ptr,nint):System.String
        mov      r12, rax
        cmp      byte  ptr [r12], r12b
        lea      rdi, bword ptr [r12+0x0C]
        lea      rsi, bword ptr [rbx+0x0C]
        lea      rdx, [r13+r13]
        mov      rax, 0xD1FFAB1E      ; code for System.SpanHelpers:Memmove(byref,byref,nuint)
        call     [rax]System.SpanHelpers:Memmove(byref,byref,nuint)
-       jmp      SHORT G_M8710_IG08
-						;; size=60 bbWeight=2 PerfScore 29.00
-G_M8710_IG06:
-       mov      r12, rbx
-       jmp      SHORT G_M8710_IG08
-						;; size=5 bbWeight=2 PerfScore 4.50
-G_M8710_IG07:
-       mov      r12, 0xD1FFAB1E      ; ''
-						;; size=10 bbWeight=2 PerfScore 0.50
-G_M8710_IG08:
+						;; size=54 bbWeight=2 PerfScore 22.50
+G_M8710_IG05:
        mov      rbx, r12
-       cmp      dword ptr [rbx+0x08], 2
-       jge      G_M8710_IG04
-						;; size=13 bbWeight=4 PerfScore 17.00
+						;; size=3 bbWeight=4 PerfScore 1.00
+G_M8710_IG06:
+       mov      r13d, dword ptr [rbx+0x08]
+       cmp      r13d, 2
+       jl       SHORT G_M8710_IG11
+						;; size=10 bbWeight=4 PerfScore 13.00
+G_M8710_IG07:
+       mov      esi, r13d
+       lea      rsi, bword ptr [rbx+2*rsi-0x04]
+       cmp      dword ptr [rsi+0x0C], 0xD1FFAB1E
+       jne      SHORT G_M8710_IG11
+						;; size=17 bbWeight=1 PerfScore 5.25
+G_M8710_IG08:
+       inc      r14d
+       lea      edx, [r13-0x02]
+       cmp      r13d, edx
+       jb       G_M8710_IG18
+       test     edx, edx
+       je       SHORT G_M8710_IG10
+						;; size=20 bbWeight=4 PerfScore 13.00
 G_M8710_IG09:
-       cmp      dword ptr [rbx+0x08], 0
-       jle      SHORT G_M8710_IG10
+       cmp      r13d, edx
+       jne      SHORT G_M8710_IG04
+       mov      r12, rbx
+       jmp      SHORT G_M8710_IG05
+						;; size=10 bbWeight=2 PerfScore 7.00
+G_M8710_IG10:
+       mov      r12, 0xD1FFAB1E      ; ''
+       jmp      SHORT G_M8710_IG05
+						;; size=12 bbWeight=2 PerfScore 4.50
+G_M8710_IG11:
+       test     r13d, r13d
+       jle      SHORT G_M8710_IG12
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Xml.Serialization.CodeIdentifier:CheckValidIdentifier(System.String)
        call     [rax]System.Xml.Serialization.CodeIdentifier:CheckValidIdentifier(System.String)
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.CSharpHelpers:CreateEscapedIdentifier(System.String):System.String
        call     [rax]System.CSharpHelpers:CreateEscapedIdentifier(System.String):System.String
        mov      rbx, rax
        cmp      byte  ptr [r15], r15b
        test     rbx, rbx
-       je       SHORT G_M8710_IG10
+       je       SHORT G_M8710_IG12
        mov      edx, dword ptr [rbx+0x08]
        lea      rsi, bword ptr [rbx+0x0C]
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E      ; code for System.Text.StringBuilder:Append(byref,int):this
        call     [rax]System.Text.StringBuilder:Append(byref,int):this
-						;; size=69 bbWeight=0.50 PerfScore 10.75
-G_M8710_IG10:
+						;; size=68 bbWeight=0.50 PerfScore 9.38
+G_M8710_IG12:
        test     r14d, r14d
-       jle      SHORT G_M8710_IG15
+       jle      SHORT G_M8710_IG17
        mov      ebx, r14d
 						;; size=8 bbWeight=0.50 PerfScore 0.75
-G_M8710_IG11:
+G_M8710_IG13:
        mov      rsi, 0xD1FFAB1E
        mov      r14, gword ptr [r15+0x08]
        mov      r13d, dword ptr [r15+0x18]
        lea      edi, [r13+0x02]
        cmp      dword ptr [r14+0x08], edi
-       jae      SHORT G_M8710_IG13
+       jae      SHORT G_M8710_IG15
 						;; size=28 bbWeight=4 PerfScore 35.00
-G_M8710_IG12:
+G_M8710_IG14:
        mov      rdi, r15
        mov      edx, 2
        mov      rax, 0xD1FFAB1E      ; code for System.Text.StringBuilder:AppendWithExpansion(byref,int):this
        call     [rax]System.Text.StringBuilder:AppendWithExpansion(byref,int):this
-       jmp      SHORT G_M8710_IG14
+       jmp      SHORT G_M8710_IG16
 						;; size=22 bbWeight=2 PerfScore 11.50
-G_M8710_IG13:
+G_M8710_IG15:
        movsxd   rax, r13d
        lea      rax, bword ptr [r14+2*rax+0x10]
        mov      word  ptr [rax], 91
        mov      word  ptr [rax+0x02], 93
        add      r13d, 2
        mov      dword ptr [r15+0x18], r13d
 						;; size=27 bbWeight=2 PerfScore 9.00
-G_M8710_IG14:
+G_M8710_IG16:
        dec      ebx
-       jne      SHORT G_M8710_IG11
+       jne      SHORT G_M8710_IG13
 						;; size=4 bbWeight=4 PerfScore 5.00
-G_M8710_IG15:
+G_M8710_IG17:
        add      rsp, 8
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
-G_M8710_IG16:
+G_M8710_IG18:
        mov      rdi, rbx
        xor      esi, esi
        mov      rax, 0xD1FFAB1E      ; code for System.String:ThrowSubstringArgumentOutOfRange(int,int):this
        call     [rax]System.String:ThrowSubstringArgumentOutOfRange(int,int):this
        int3     
 						;; size=18 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 380, prolog size 22, PerfScore 186.88, instruction count 104, allocated bytes for code 380 (MethodHash=903addf9) for method System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder) (FullOpts)
+; Total bytes of code 362, prolog size 22, PerfScore 153.50, instruction count 99, allocated bytes for code 362 (MethodHash=903addf9) for method System.Xml.Serialization.CodeIdentifier:EscapeKeywords(System.String,System.Text.StringBuilder) (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/a213b5ac7b1c3fe80fc82e2cf464816c

[MihuBot]

@EgorBo