[JitDiff X64] xtqqczze/dotnet-runtime/remove-this-trick

[MihuBot]

Job completed in 13 minutes 53 seconds.
https://github.com/xtqqczze/dotnet-runtime/tree/remove-this-trick

Diffs

Found 262 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 40225541
Total bytes of diff: 40225579
Total bytes of delta: 38 (0.00 % of base)
Total relative delta: 0.26
    diff is a regression.
    relative diff is a regression.


Total byte diff includes 10 bytes from reconciling methods
	Base had    4 unique methods,     1186 unique bytes
	Diff had    4 unique methods,     1196 unique bytes

Top file regressions (bytes):
          38 : System.Text.Encodings.Web.dasm (0.17 % of base)

1 total files with Code Size differences (0 improved, 1 regressed), 258 unchanged.

Top method regressions (bytes):
         473 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Text.Rune,System.Span`1[ushort]):int (FullOpts) (0 base, 1 diff methods)
         424 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Text.Rune,System.Span`1[ubyte]):int (FullOpts) (0 base, 1 diff methods)
         152 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(uint,System.Span`1[ubyte]):int (FullOpts) (0 base, 1 diff methods)
         147 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(uint,System.Span`1[ushort]):int (FullOpts) (0 base, 1 diff methods)
           7 (4.58 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
           7 (5.74 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
           7 (7.78 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
           7 (8.05 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)

Top method improvements (bytes):
        -475 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Object,System.Text.Rune,System.Span`1[ushort]):int (FullOpts) (1 base, 0 diff methods)
        -426 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Object,System.Text.Rune,System.Span`1[ubyte]):int (FullOpts) (1 base, 0 diff methods)
        -147 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(System.Object,uint,System.Span`1[ushort]):int (FullOpts) (1 base, 0 diff methods)
        -138 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(System.Object,uint,System.Span`1[ubyte]):int (FullOpts) (1 base, 0 diff methods)

Top method regressions (percentages):
         147 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(uint,System.Span`1[ushort]):int (FullOpts) (0 base, 1 diff methods)
         152 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(uint,System.Span`1[ubyte]):int (FullOpts) (0 base, 1 diff methods)
         473 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Text.Rune,System.Span`1[ushort]):int (FullOpts) (0 base, 1 diff methods)
         424 (Infinity of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Text.Rune,System.Span`1[ubyte]):int (FullOpts) (0 base, 1 diff methods)
           7 (8.05 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
           7 (7.78 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
           7 (5.74 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
           7 (4.58 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)

Top method improvements (percentages):
        -147 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(System.Object,uint,System.Span`1[ushort]):int (FullOpts) (1 base, 0 diff methods)
        -138 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(System.Object,uint,System.Span`1[ubyte]):int (FullOpts) (1 base, 0 diff methods)
        -475 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Object,System.Text.Rune,System.Span`1[ushort]):int (FullOpts) (1 base, 0 diff methods)
        -426 (-100.00 % of base) : System.Text.Encodings.Web.dasm - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Object,System.Text.Rune,System.Span`1[ubyte]):int (FullOpts) (1 base, 0 diff methods)

12 total methods with Code Size differences (4 improved, 8 regressed), 233010 unchanged.

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

Artifacts:

• build-clr-checked-main.zip (88 MB)
• build-artifacts-main.zip (688 MB)
• build-clr-checked-pr.zip (88 MB)
• build-artifacts-pr.zip (94 MB)
• jit-diffs-pr.zip (135 MB)
• jit-diffs-main.zip (135 MB)
• diff-frameworks.txt (6 KB)
• ShortDiffsRegressions.md (34 KB)

[MihuBot]

Top method regressions

7 (4.58 % of base) - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this

 ; Assembly listing for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 13 single block inlinees; 12 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T03] (  3,  2.50)     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation>
+;* V00 this         [V00    ] (  0,  0   )     ref  ->  zero-ref    this class-hnd single-def <System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op single-def <System.Text.Rune>
 ;* V02 arg2         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-arg single-def <System.Span`1[ushort]>
 ;* V03 loc0         [V03    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[ushort]>
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V05 tmp1         [V05    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[ushort]>
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ushort]>
 ;* V07 tmp3         [V07    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V08 tmp4         [V08,T09] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V08 tmp4         [V08,T08] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V09 tmp5         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ushort]>
 ;* V10 tmp6         [V10    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V11 tmp7         [V11    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V12 tmp8         [V12    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
 ;* V13 tmp9         [V13    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[ushort]>
 ;* V14 tmp10        [V14    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ushort]>
 ;* V15 tmp11        [V15    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V16 tmp12        [V16,T10] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V16 tmp12        [V16,T09] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V17 tmp13        [V17    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ushort]>
 ;* V18 tmp14        [V18    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V19 tmp15        [V19    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V20 tmp16        [V20    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
 ;* V21 tmp17        [V21    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[ushort]>
 ;* V22 tmp18        [V22    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ushort]>
 ;* V23 tmp19        [V23    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V24 tmp20        [V24,T11] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V24 tmp20        [V24,T10] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V25 tmp21        [V25    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ushort]>
 ;* V26 tmp22        [V26    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V27 tmp23        [V27    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V28 tmp24        [V28    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
 ;* V29 tmp25        [V29    ] (  0,  0   )  struct (16) zero-ref    "Inline return value spill temp" <System.ReadOnlySpan`1[ushort]>
 ;* V30 tmp26        [V30    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ushort]>
 ;* V31 tmp27        [V31    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
-;* V32 tmp28        [V32,T12] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V32 tmp28        [V32,T11] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V33 tmp29        [V33    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ushort]>
 ;* V34 tmp30        [V34    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V35 tmp31        [V35    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V36 tmp32        [V36    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V37 tmp33        [V37,T04] (  3,  3   )     int  ->  rax         "Single return block return value"
-;  V38 tmp34        [V38,T01] (  6,  4   )     int  ->  rsi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
+;  V37 tmp33        [V37,T03] (  3,  3   )     int  ->  rax         "Single return block return value"
+;  V38 tmp34        [V38,T01] (  6,  4   )     int  ->  rdi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
 ;  V39 tmp35        [V39,T00] (  8,  4.50)   byref  ->  rdx         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ;  V40 tmp36        [V40,T02] (  6,  3.50)     int  ->  rcx         single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V41 tmp37        [V41    ] (  0,  0   )   byref  ->  zero-ref    "field V03._reference (fldOffset=0x0)" P-INDEP
 ;* V42 tmp38        [V42    ] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
 ;* V43 tmp39        [V43    ] (  0,  0   )   byref  ->  zero-ref    "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V44 tmp40        [V44    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-INDEP
-;* V45 tmp41        [V45,T05] (  0,  0   )   byref  ->  zero-ref    single-def "field V06._reference (fldOffset=0x0)" P-INDEP
+;* V45 tmp41        [V45,T04] (  0,  0   )   byref  ->  zero-ref    single-def "field V06._reference (fldOffset=0x0)" P-INDEP
 ;* V46 tmp42        [V46    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-INDEP
 ;* V47 tmp43        [V47    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
 ;* V48 tmp44        [V48    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
 ;* V49 tmp45        [V49    ] (  0,  0   )   byref  ->  zero-ref    "field V13._reference (fldOffset=0x0)" P-INDEP
 ;* V50 tmp46        [V50    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V51 tmp47        [V51,T06] (  0,  0   )   byref  ->  zero-ref    single-def "field V14._reference (fldOffset=0x0)" P-INDEP
+;* V51 tmp47        [V51,T05] (  0,  0   )   byref  ->  zero-ref    single-def "field V14._reference (fldOffset=0x0)" P-INDEP
 ;* V52 tmp48        [V52    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
 ;* V53 tmp49        [V53    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V17._reference (fldOffset=0x0)" P-INDEP
 ;* V54 tmp50        [V54    ] (  0,  0   )     int  ->  zero-ref    "field V17._length (fldOffset=0x8)" P-INDEP
 ;* V55 tmp51        [V55    ] (  0,  0   )   byref  ->  zero-ref    "field V21._reference (fldOffset=0x0)" P-INDEP
 ;* V56 tmp52        [V56    ] (  0,  0   )     int  ->  zero-ref    "field V21._length (fldOffset=0x8)" P-INDEP
-;* V57 tmp53        [V57,T07] (  0,  0   )   byref  ->  zero-ref    single-def "field V22._reference (fldOffset=0x0)" P-INDEP
+;* V57 tmp53        [V57,T06] (  0,  0   )   byref  ->  zero-ref    single-def "field V22._reference (fldOffset=0x0)" P-INDEP
 ;* V58 tmp54        [V58    ] (  0,  0   )     int  ->  zero-ref    "field V22._length (fldOffset=0x8)" P-INDEP
 ;* V59 tmp55        [V59    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V25._reference (fldOffset=0x0)" P-INDEP
 ;* V60 tmp56        [V60    ] (  0,  0   )     int  ->  zero-ref    "field V25._length (fldOffset=0x8)" P-INDEP
 ;* V61 tmp57        [V61    ] (  0,  0   )   byref  ->  zero-ref    "field V29._reference (fldOffset=0x0)" P-INDEP
 ;* V62 tmp58        [V62    ] (  0,  0   )     int  ->  zero-ref    "field V29._length (fldOffset=0x8)" P-INDEP
-;* V63 tmp59        [V63,T08] (  0,  0   )   byref  ->  zero-ref    single-def "field V30._reference (fldOffset=0x0)" P-INDEP
+;* V63 tmp59        [V63,T07] (  0,  0   )   byref  ->  zero-ref    single-def "field V30._reference (fldOffset=0x0)" P-INDEP
 ;* V64 tmp60        [V64    ] (  0,  0   )     int  ->  zero-ref    "field V30._length (fldOffset=0x8)" P-INDEP
 ;* V65 tmp61        [V65    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V33._reference (fldOffset=0x0)" P-INDEP
 ;* V66 tmp62        [V66    ] (  0,  0   )     int  ->  zero-ref    "field V33._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 0
 
 G_M621_IG01:
        push     rbp
        mov      rbp, rsp
-						;; size=4 bbWeight=1 PerfScore 1.25
+       mov      edi, esi
+						;; size=6 bbWeight=1 PerfScore 1.50
 G_M621_IG02:
-       cmp      esi, 60
+       cmp      edi, 60
        je       SHORT G_M621_IG09
 						;; size=5 bbWeight=1 PerfScore 1.25
 G_M621_IG03:
-       cmp      esi, 62
+       cmp      edi, 62
        je       SHORT G_M621_IG08
-       cmp      esi, 38
+       cmp      edi, 38
        je       SHORT G_M621_IG06
-       cmp      esi, 34
+       cmp      edi, 34
        je       SHORT G_M621_IG04
-       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(System.Object,uint,System.Span`1[ushort]):int
-       call     [rax]System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(System.Object,uint,System.Span`1[ushort]):int
+       mov      rsi, rdx
+       mov      edx, ecx
+       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(uint,System.Span`1[ushort]):int
+       call     [rax]System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|3_0(uint,System.Span`1[ushort]):int
        jmp      SHORT G_M621_IG11
-						;; size=29 bbWeight=0.50 PerfScore 4.50
+						;; size=34 bbWeight=0.50 PerfScore 4.75
 G_M621_IG04:
        cmp      ecx, 6
        jl       SHORT G_M621_IG10
        mov      rax, 0xD1FFAB1E
        mov      qword ptr [rdx], rax
        mov      dword ptr [rdx+0x08], 0xD1FFAB1E
        mov      eax, 6
 						;; size=30 bbWeight=0.50 PerfScore 1.88
 G_M621_IG05:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M621_IG06:
        cmp      ecx, 5
        jl       SHORT G_M621_IG10
        mov      rax, 0xD1FFAB1E
        mov      qword ptr [rdx], rax
        mov      word  ptr [rdx+0x08], 59
        mov      eax, 5
 						;; size=29 bbWeight=0.50 PerfScore 1.88
 G_M621_IG07:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M621_IG08:
        cmp      ecx, 4
        jl       SHORT G_M621_IG10
        mov      rcx, 0xD1FFAB1E
        mov      qword ptr [rdx], rcx
        jmp      SHORT G_M621_IG13
 						;; size=20 bbWeight=0.50 PerfScore 2.25
 G_M621_IG09:
        cmp      ecx, 4
        jge      SHORT G_M621_IG12
 						;; size=5 bbWeight=0.50 PerfScore 0.62
 G_M621_IG10:
        mov      eax, -1
 						;; size=5 bbWeight=0.50 PerfScore 0.12
 G_M621_IG11:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M621_IG12:
        mov      rax, 0xD1FFAB1E
        mov      qword ptr [rdx], rax
 						;; size=13 bbWeight=0.50 PerfScore 0.62
 G_M621_IG13:
        mov      eax, 4
 						;; size=5 bbWeight=0.50 PerfScore 0.12
 G_M621_IG14:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 
-; Total bytes of code 153, prolog size 4, PerfScore 17.50, instruction count 44, allocated bytes for code 153 (MethodHash=87bffd92) for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
+; Total bytes of code 160, prolog size 4, PerfScore 18.00, instruction count 47, allocated bytes for code 160 (MethodHash=87bffd92) for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
 ; ============================================================

7 (5.74 % of base) - System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this

 ; Assembly listing for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 5 single block inlinees; 12 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T03] (  3,  2.50)     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation>
+;* V00 this         [V00    ] (  0,  0   )     ref  ->  zero-ref    this class-hnd single-def <System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op single-def <System.Text.Rune>
 ;* V02 arg2         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-arg single-def <System.Span`1[ubyte]>
 ;* V03 loc0         [V03    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[ubyte]>
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V05 tmp1         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V07 tmp3         [V07    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
 ;* V08 tmp4         [V08    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.ReadOnlySpan`1[ubyte]>
-;* V09 tmp5         [V09,T05] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V09 tmp5         [V09,T04] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V10 tmp6         [V10    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ubyte]>
 ;* V11 tmp7         [V11    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V12 tmp8         [V12    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V13 tmp9         [V13    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V14 tmp10        [V14,T06] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V14 tmp10        [V14,T05] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V15 tmp11        [V15    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ubyte]>
 ;* V16 tmp12        [V16    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V17 tmp13        [V17    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V18 tmp14        [V18    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V19 tmp15        [V19,T07] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V19 tmp15        [V19,T06] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V20 tmp16        [V20    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ubyte]>
 ;* V21 tmp17        [V21    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V22 tmp18        [V22    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V23 tmp19        [V23    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V24 tmp20        [V24,T08] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
+;* V24 tmp20        [V24,T07] (  0,  0   )   ubyte  ->  zero-ref    "Inline stloc first use temp"
 ;* V25 tmp21        [V25    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inlining Arg" <System.Span`1[ubyte]>
 ;* V26 tmp22        [V26    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V27 tmp23        [V27    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
 ;* V28 tmp24        [V28    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V29 tmp25        [V29,T04] (  3,  3   )     int  ->  rax         "Single return block return value"
-;  V30 tmp26        [V30,T01] (  6,  4   )     int  ->  rsi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
+;  V29 tmp25        [V29,T03] (  3,  3   )     int  ->  rax         "Single return block return value"
+;  V30 tmp26        [V30,T01] (  6,  4   )     int  ->  rdi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
 ;  V31 tmp27        [V31,T00] (  8,  4.50)   byref  ->  rdx         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ;  V32 tmp28        [V32,T02] (  6,  3.50)     int  ->  rcx         single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V33 tmp29        [V33    ] (  0,  0   )   byref  ->  zero-ref    "field V03._reference (fldOffset=0x0)" P-INDEP
 ;* V34 tmp30        [V34    ] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
 ;* V35 tmp31        [V35    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V05._reference (fldOffset=0x0)" P-INDEP
 ;* V36 tmp32        [V36    ] (  0,  0   )     int  ->  zero-ref    "field V05._length (fldOffset=0x8)" P-INDEP
 ;* V37 tmp33        [V37    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V06._reference (fldOffset=0x0)" P-INDEP
 ;* V38 tmp34        [V38    ] (  0,  0   )     int  ->  zero-ref    "field V06._length (fldOffset=0x8)" P-INDEP
 ;* V39 tmp35        [V39    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V07._reference (fldOffset=0x0)" P-INDEP
 ;* V40 tmp36        [V40    ] (  0,  0   )     int  ->  zero-ref    "field V07._length (fldOffset=0x8)" P-INDEP
 ;* V41 tmp37        [V41    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V08._reference (fldOffset=0x0)" P-INDEP
 ;* V42 tmp38        [V42    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
 ;* V43 tmp39        [V43    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
 ;* V44 tmp40        [V44    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
 ;* V45 tmp41        [V45    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V15._reference (fldOffset=0x0)" P-INDEP
 ;* V46 tmp42        [V46    ] (  0,  0   )     int  ->  zero-ref    "field V15._length (fldOffset=0x8)" P-INDEP
 ;* V47 tmp43        [V47    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V20._reference (fldOffset=0x0)" P-INDEP
 ;* V48 tmp44        [V48    ] (  0,  0   )     int  ->  zero-ref    "field V20._length (fldOffset=0x8)" P-INDEP
 ;* V49 tmp45        [V49    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V25._reference (fldOffset=0x0)" P-INDEP
 ;* V50 tmp46        [V50    ] (  0,  0   )     int  ->  zero-ref    "field V25._length (fldOffset=0x8)" P-INDEP
 ;
 ; Lcl frame size = 0
 
 G_M18986_IG01:
        push     rbp
        mov      rbp, rsp
-						;; size=4 bbWeight=1 PerfScore 1.25
+       mov      edi, esi
+						;; size=6 bbWeight=1 PerfScore 1.50
 G_M18986_IG02:
-       cmp      esi, 60
+       cmp      edi, 60
        je       SHORT G_M18986_IG09
 						;; size=5 bbWeight=1 PerfScore 1.25
 G_M18986_IG03:
-       cmp      esi, 62
+       cmp      edi, 62
        je       SHORT G_M18986_IG08
-       cmp      esi, 38
+       cmp      edi, 38
        je       SHORT G_M18986_IG06
-       cmp      esi, 34
+       cmp      edi, 34
        je       SHORT G_M18986_IG04
-       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(System.Object,uint,System.Span`1[ubyte]):int
-       call     [rax]System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(System.Object,uint,System.Span`1[ubyte]):int
+       mov      rsi, rdx
+       mov      edx, ecx
+       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(uint,System.Span`1[ubyte]):int
+       call     [rax]System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|2_0(uint,System.Span`1[ubyte]):int
        jmp      SHORT G_M18986_IG11
-						;; size=29 bbWeight=0.50 PerfScore 4.50
+						;; size=34 bbWeight=0.50 PerfScore 4.75
 G_M18986_IG04:
        cmp      ecx, 6
        jl       SHORT G_M18986_IG10
        mov      dword ptr [rdx], 0xD1FFAB1E
        mov      word  ptr [rdx+0x04], 0x3B74
        mov      eax, 6
 						;; size=22 bbWeight=0.50 PerfScore 1.75
 G_M18986_IG05:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M18986_IG06:
        cmp      ecx, 5
        jl       SHORT G_M18986_IG10
        mov      dword ptr [rdx], 0xD1FFAB1E
        mov      byte  ptr [rdx+0x04], 59
        mov      eax, 5
 						;; size=20 bbWeight=0.50 PerfScore 1.75
 G_M18986_IG07:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M18986_IG08:
        cmp      ecx, 4
        jl       SHORT G_M18986_IG10
        mov      dword ptr [rdx], 0xD1FFAB1E
        jmp      SHORT G_M18986_IG13
 						;; size=13 bbWeight=0.50 PerfScore 2.12
 G_M18986_IG09:
        cmp      ecx, 4
        jge      SHORT G_M18986_IG12
 						;; size=5 bbWeight=0.50 PerfScore 0.62
 G_M18986_IG10:
        mov      eax, -1
 						;; size=5 bbWeight=0.50 PerfScore 0.12
 G_M18986_IG11:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M18986_IG12:
        mov      dword ptr [rdx], 0xD1FFAB1E
 						;; size=6 bbWeight=0.50 PerfScore 0.50
 G_M18986_IG13:
        mov      eax, 4
 						;; size=5 bbWeight=0.50 PerfScore 0.12
 G_M18986_IG14:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 
-; Total bytes of code 122, prolog size 4, PerfScore 17.00, instruction count 40, allocated bytes for code 122 (MethodHash=3025b5d5) for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
+; Total bytes of code 129, prolog size 4, PerfScore 17.50, instruction count 43, allocated bytes for code 129 (MethodHash=3025b5d5) for method System.Text.Encodings.Web.DefaultHtmlEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
 ; ============================================================

7 (7.78 % of base) - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this

 ; Assembly listing for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 3 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  5,  4.50)     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation>
+;  V00 this         [V00,T00] (  4,  4   )     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    single-def <System.Text.Rune>
 ;* V02 arg2         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op single-def <System.Span`1[ushort]>
 ;  V03 loc0         [V03,T06] (  2,  1   )   ubyte  ->  rbx         ld-addr-op
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V05 tmp1         [V05    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.Text.Rune>
-;  V07 tmp3         [V07,T04] (  2,  3   )   byref  ->  rax         single-def "Inlining Arg"
+;  V07 tmp3         [V07,T04] (  2,  3   )   byref  ->  rdi         single-def "Inlining Arg"
 ;* V08 tmp4         [V08    ] (  0,  0   )   byref  ->  zero-ref    "impAppendStmt"
 ;  V09 tmp5         [V09,T05] (  3,  1.50)   ubyte  ->  rbx         "Inline stloc first use temp"
 ;* V10 tmp6         [V10    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;  V11 tmp7         [V11,T01] (  4,  3   )     int  ->  rsi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
+;  V11 tmp7         [V11,T01] (  4,  3   )     int  ->  rax         single-def "field V01._value (fldOffset=0x0)" P-INDEP
 ;  V12 tmp8         [V12,T02] (  4,  2.50)   byref  ->  rdx         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ;  V13 tmp9         [V13,T03] (  3,  2   )     int  ->  rcx         single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V14 tmp10        [V14    ] (  0,  0   )     int  ->  zero-ref    "field V06._value (fldOffset=0x0)" P-INDEP
 ;
 ; Lcl frame size = 8
 
 G_M19651_IG01:
        push     rbp
        push     rbx
        push     rax
        lea      rbp, [rsp+0x10]
-						;; size=8 bbWeight=1 PerfScore 3.50
+       mov      eax, esi
+						;; size=10 bbWeight=1 PerfScore 3.75
 G_M19651_IG02:
        cmp      byte  ptr [rdi], dil
-       lea      rax, bword ptr [rdi+0x08]
-       cmp      esi, 127
+       add      rdi, 8
+       cmp      eax, 127
        ja       SHORT G_M19651_IG04
-						;; size=12 bbWeight=1 PerfScore 4.75
+						;; size=12 bbWeight=1 PerfScore 4.50
 G_M19651_IG03:
-       mov      r8d, esi
-       movzx    rbx, byte  ptr [rax+r8]
+       mov      esi, eax
+       movzx    rbx, byte  ptr [rdi+rsi]
        test     ebx, ebx
        jne      SHORT G_M19651_IG06
-						;; size=12 bbWeight=0.50 PerfScore 1.75
+						;; size=10 bbWeight=0.50 PerfScore 1.75
 G_M19651_IG04:
-       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Object,System.Text.Rune,System.Span`1[ushort]):int
-       call     [rax]System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Object,System.Text.Rune,System.Span`1[ushort]):int
+       mov      rsi, rdx
+       mov      edx, ecx
+       mov      edi, eax
+       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Text.Rune,System.Span`1[ushort]):int
+       call     [rax]System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf16>g__TryEncodeScalarAsHex|5_0(System.Text.Rune,System.Span`1[ushort]):int
        nop      
-						;; size=13 bbWeight=0.50 PerfScore 1.75
+						;; size=20 bbWeight=0.50 PerfScore 2.12
 G_M19651_IG05:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M19651_IG06:
        cmp      ecx, 1
        jg       SHORT G_M19651_IG08
        mov      eax, -1
 						;; size=10 bbWeight=0.50 PerfScore 0.75
 G_M19651_IG07:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M19651_IG08:
        mov      word  ptr [rdx], 92
        mov      word  ptr [rdx+0x02], bx
        mov      eax, 2
 						;; size=14 bbWeight=0.50 PerfScore 1.12
 G_M19651_IG09:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 
-; Total bytes of code 90, prolog size 8, PerfScore 17.00, instruction count 33, allocated bytes for code 90 (MethodHash=2131b33c) for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
+; Total bytes of code 97, prolog size 8, PerfScore 17.38, instruction count 37, allocated bytes for code 97 (MethodHash=2131b33c) for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf16(System.Text.Rune,System.Span`1[ushort]):int:this (FullOpts)
 ; ============================================================

7 (8.05 % of base) - System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this

 ; Assembly listing for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 3 single block inlinees; 1 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  5,  4.50)     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation>
+;  V00 this         [V00,T00] (  4,  4   )     ref  ->  rdi         this class-hnd single-def <System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    single-def <System.Text.Rune>
 ;* V02 arg2         [V02    ] (  0,  0   )  struct (16) zero-ref    multireg-arg ld-addr-op single-def <System.Span`1[ubyte]>
 ;  V03 loc0         [V03,T06] (  2,  1   )   ubyte  ->  rbx         ld-addr-op
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;* V05 tmp1         [V05    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V06 tmp2         [V06    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.Text.Rune>
-;  V07 tmp3         [V07,T04] (  2,  3   )   byref  ->  rax         single-def "Inlining Arg"
+;  V07 tmp3         [V07,T04] (  2,  3   )   byref  ->  rdi         single-def "Inlining Arg"
 ;* V08 tmp4         [V08    ] (  0,  0   )   byref  ->  zero-ref    "impAppendStmt"
 ;  V09 tmp5         [V09,T05] (  3,  1.50)   ubyte  ->  rbx         "Inline stloc first use temp"
 ;* V10 tmp6         [V10    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;  V11 tmp7         [V11,T01] (  4,  3   )     int  ->  rsi         single-def "field V01._value (fldOffset=0x0)" P-INDEP
+;  V11 tmp7         [V11,T01] (  4,  3   )     int  ->  rax         single-def "field V01._value (fldOffset=0x0)" P-INDEP
 ;  V12 tmp8         [V12,T02] (  4,  2.50)   byref  ->  rdx         single-def "field V02._reference (fldOffset=0x0)" P-INDEP
 ;  V13 tmp9         [V13,T03] (  3,  2   )     int  ->  rcx         single-def "field V02._length (fldOffset=0x8)" P-INDEP
 ;* V14 tmp10        [V14    ] (  0,  0   )     int  ->  zero-ref    "field V06._value (fldOffset=0x0)" P-INDEP
 ;
 ; Lcl frame size = 8
 
 G_M55940_IG01:
        push     rbp
        push     rbx
        push     rax
        lea      rbp, [rsp+0x10]
-						;; size=8 bbWeight=1 PerfScore 3.50
+       mov      eax, esi
+						;; size=10 bbWeight=1 PerfScore 3.75
 G_M55940_IG02:
        cmp      byte  ptr [rdi], dil
-       lea      rax, bword ptr [rdi+0x08]
-       cmp      esi, 127
+       add      rdi, 8
+       cmp      eax, 127
        ja       SHORT G_M55940_IG04
-						;; size=12 bbWeight=1 PerfScore 4.75
+						;; size=12 bbWeight=1 PerfScore 4.50
 G_M55940_IG03:
-       mov      r8d, esi
-       movzx    rbx, byte  ptr [rax+r8]
+       mov      esi, eax
+       movzx    rbx, byte  ptr [rdi+rsi]
        test     ebx, ebx
        jne      SHORT G_M55940_IG06
-						;; size=12 bbWeight=0.50 PerfScore 1.75
+						;; size=10 bbWeight=0.50 PerfScore 1.75
 G_M55940_IG04:
-       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Object,System.Text.Rune,System.Span`1[ubyte]):int
-       call     [rax]System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Object,System.Text.Rune,System.Span`1[ubyte]):int
+       mov      rsi, rdx
+       mov      edx, ecx
+       mov      edi, eax
+       mov      rax, 0xD1FFAB1E      ; code for System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Text.Rune,System.Span`1[ubyte]):int
+       call     [rax]System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:<EncodeUtf8>g__TryEncodeScalarAsHex|4_0(System.Text.Rune,System.Span`1[ubyte]):int
        nop      
-						;; size=13 bbWeight=0.50 PerfScore 1.75
+						;; size=20 bbWeight=0.50 PerfScore 2.12
 G_M55940_IG05:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M55940_IG06:
        cmp      ecx, 1
        jg       SHORT G_M55940_IG08
        mov      eax, -1
 						;; size=10 bbWeight=0.50 PerfScore 0.75
 G_M55940_IG07:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M55940_IG08:
        mov      byte  ptr [rdx], 92
        mov      byte  ptr [rdx+0x01], bl
        mov      eax, 2
 						;; size=11 bbWeight=0.50 PerfScore 1.12
 G_M55940_IG09:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 
-; Total bytes of code 87, prolog size 8, PerfScore 17.00, instruction count 33, allocated bytes for code 87 (MethodHash=fb37257b) for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
+; Total bytes of code 94, prolog size 8, PerfScore 17.38, instruction count 37, allocated bytes for code 94 (MethodHash=fb37257b) for method System.Text.Encodings.Web.DefaultJavaScriptEncoder+EscaperImplementation:EncodeUtf8(System.Text.Rune,System.Span`1[ubyte]):int:this (FullOpts)
 ; ============================================================

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