[JitDiff X64] [MihaZupan] JIT: Use faster mod for uint16 values

[MihuBot]

Job completed in 14 minutes 42 seconds (remote runner delay: 57 seconds).
dotnet/runtime#111535

Diffs

Found 86 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 43817619
Total bytes of diff: 43817545
Total bytes of delta: -74 (-0.00 % of base)
Total relative delta: -0.05
    diff is an improvement.
    relative diff is an improvement.


Top file improvements (bytes):
         -42 : System.Private.CoreLib.dasm (-0.00 % of base)
         -32 : System.Text.Encoding.CodePages.dasm (-0.04 % of base)

2 total files with Code Size differences (2 improved, 0 regressed), 261 unchanged.

Top method improvements (bytes):
         -32 (-1.38 % of base) : System.Text.Encoding.CodePages.dasm - System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):int:this (FullOpts)
         -20 (-1.36 % of base) : System.Private.CoreLib.dasm - System.Globalization.DateTimeFormatInfo:Tokenize(int,byref,byref,byref):ubyte:this (FullOpts)
         -18 (-1.87 % of base) : System.Private.CoreLib.dasm - System.Globalization.DateTimeFormatInfo:InsertHash(System.Globalization.DateTimeFormatInfo+TokenHashValue[],System.String,int,int):this (FullOpts)
          -4 (-0.80 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this (FullOpts)

Top method improvements (percentages):
         -18 (-1.87 % of base) : System.Private.CoreLib.dasm - System.Globalization.DateTimeFormatInfo:InsertHash(System.Globalization.DateTimeFormatInfo+TokenHashValue[],System.String,int,int):this (FullOpts)
         -32 (-1.38 % of base) : System.Text.Encoding.CodePages.dasm - System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):int:this (FullOpts)
         -20 (-1.36 % of base) : System.Private.CoreLib.dasm - System.Globalization.DateTimeFormatInfo:Tokenize(int,byref,byref,byref):ubyte:this (FullOpts)
          -4 (-0.80 % of base) : System.Private.CoreLib.dasm - System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this (FullOpts)

4 total methods with Code Size differences (4 improved, 0 regressed), 247381 unchanged.

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

Artifacts:

• build-clr-checked-main.zip (86 MB)
• build-artifacts-main.zip (709 MB)
• build-clr-checked-pr.zip (86 MB)
• build-artifacts-pr.zip (710 MB)
• jit-diffs-pr.zip (148 MB)
• jit-diffs-main.zip (148 MB)
• diff-frameworks.txt (2 KB)
• ShortDiffsImprovements.md (54 KB)
• LongDiffsImprovements.md (111 KB)

[MihuBot]

Top method improvements

-32 (-1.38 % of base) - System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):int:this

 ; Assembly listing for method System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):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; 31 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 this         [V00,T36] (  5,  19   )     ref  ->  r15         this class-hnd single-def <System.Text.GB18030Encoding>
 ;  V01 arg1         [V01,T73] (  3,   3   )    long  ->  r13         single-def
 ;  V02 arg2         [V02,T74] (  3,   3   )     int  ->  r12         single-def
 ;  V03 arg3         [V03,T72] (  4,   3.50)    long  ->  r14         single-def
 ;  V04 arg4         [V04,T75] (  3,   3   )     int  ->  [rbp-0x2C]  single-def
 ;  V05 arg5         [V05,T08] ( 10, 136.50)     ref  ->  rbx         class-hnd single-def <System.Text.EncoderNLS>
 ;  V06 loc0         [V06,T21] ( 12,  36   )  ushort  ->  [rbp-0x30] 
 ;  V07 loc1         [V07,T01] (180,2714.50)     ref  ->  r13         class-hnd exact single-def <System.Text.EncodingByteBuffer>
 ;* V08 loc2         [V08    ] (  0,   0   )  ushort  ->  zero-ref   
 ;  V09 loc3         [V09,T25] ( 12,  24   )     int  ->  registers  
 ;  V10 loc4         [V10,T76] (  2,   4   )   ubyte  ->  rdi        
 ;  V11 loc5         [V11,T77] (  2,   4   )   ubyte  ->  rcx        
 ;  V12 loc6         [V12,T78] (  2,   4   )   ubyte  ->  rdx        
-;  V13 loc7         [V13,T06] ( 16, 176   )  ushort  ->  rcx        
+;  V13 loc7         [V13,T07] ( 13, 152   )  ushort  ->  rax        
 ;  V14 loc8         [V14,T38] (  2,  16   )   ubyte  ->  rdi        
-;  V15 loc9         [V15,T39] (  2,  16   )   ubyte  ->  rsi        
-;  V16 loc10        [V16,T40] (  2,  16   )   ubyte  ->  rax        
+;  V15 loc9         [V15,T39] (  2,  16   )   ubyte  ->  rcx        
+;  V16 loc10        [V16,T40] (  2,  16   )   ubyte  ->  rdx        
 ;  V17 OutArgs      [V17    ] (  1,   1   )  struct ( 8) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;  V18 tmp1         [V18,T57] (  3,   6   )     ref  ->  [rbp-0x38]  class-hnd exact spill-single-def "NewObj constructor temp" <System.Text.EncodingByteBuffer>
 ;  V19 tmp2         [V19,T15] ( 14,  82   )  ushort  ->  rsi         "Inline stloc first use temp"
 ;  V20 tmp3         [V20,T58] (  3,   6   )    long  ->  rdi         "Inline stloc first use temp"
 ;  V21 tmp4         [V21,T37] (  4,  16   )   byref  ->  r12         "Inlining Arg"
 ;  V22 tmp5         [V22,T52] (  4,   8   )  ushort  ->  rsi         "Inline stloc first use temp"
 ;  V23 tmp6         [V23,T79] (  2,   4   )   ubyte  ->  rax         "Inline return value spill temp"
 ;* V24 tmp7         [V24    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V25 tmp8         [V25    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V26 tmp9         [V26,T59] (  3,   6   )    long  ->  rax         "Inline stloc first use temp"
 ;* V27 tmp10        [V27    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V28 tmp11        [V28    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V29 tmp12        [V29,T60] (  3,   6   )    long  ->  rax         "Inline stloc first use temp"
 ;* V30 tmp13        [V30    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V31 tmp14        [V31,T61] (  3,   6   )    long  ->  rax         "Inline stloc first use temp"
 ;  V32 tmp15        [V32,T62] (  3,   6   )   ubyte  ->  rax         "Inline return value spill temp"
 ;  V33 tmp16        [V33,T63] (  3,   6   )    long  ->  rax         "Inline stloc first use temp"
 ;* V34 tmp17        [V34    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V35 tmp18        [V35    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V36 tmp19        [V36,T26] (  3,  24   )    long  ->  rdi         "Inline stloc first use temp"
 ;* V37 tmp20        [V37    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V38 tmp21        [V38,T56] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V39 tmp22        [V39,T27] (  3,  24   )   ubyte  ->  rdi         "Inline stloc first use temp"
 ;  V40 tmp23        [V40,T41] (  2,  16   )   ubyte  ->  rax         "Inline return value spill temp"
 ;* V41 tmp24        [V41    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V42 tmp25        [V42    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;  V43 tmp26        [V43,T28] (  3,  24   )    long  ->  rdx         "Inline stloc first use temp"
+;  V43 tmp26        [V43,T28] (  3,  24   )    long  ->  rsi         "Inline stloc first use temp"
 ;* V44 tmp27        [V44    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V45 tmp28        [V45    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
-;  V46 tmp29        [V46,T29] (  3,  24   )    long  ->  rcx         "Inline stloc first use temp"
+;  V46 tmp29        [V46,T29] (  3,  24   )    long  ->  rax         "Inline stloc first use temp"
 ;* V47 tmp30        [V47    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V48 tmp31        [V48,T30] (  3,  24   )    long  ->  rax         "Inline stloc first use temp"
 ;  V49 tmp32        [V49,T31] (  3,  24   )   ubyte  ->  rax         "Inline return value spill temp"
 ;  V50 tmp33        [V50,T32] (  3,  24   )    long  ->  rax         "Inline stloc first use temp"
 ;* V51 tmp34        [V51    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V52 tmp35        [V52    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;  V53 tmp36        [V53,T10] (  2, 128   )   ubyte  ->  rax         "Inline return value spill temp"
 ;* V54 tmp37        [V54    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V55 tmp38        [V55    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V56 tmp39        [V56    ] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V57 tmp40        [V57,T12] (  3,  96   )    long  ->  rdi         "Inline stloc first use temp"
 ;* V58 tmp41        [V58    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;  V59 tmp42        [V59,T09] (  3, 128   )   ubyte  ->  rax         "Inline return value spill temp"
 ;  V60 tmp43        [V60,T13] (  3,  96   )    long  ->  rdi         "Inline stloc first use temp"
 ;* V61 tmp44        [V61    ] (  0,   0   )   ubyte  ->  zero-ref    "Inlining Arg"
 ;* V62 tmp45        [V62,T11] (  0,   0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;  V63 tmp46        [V63,T00] (  3,3072   )     ref  ->  rdi         "argument with side effect"
 ;  V64 tmp47        [V64,T42] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V65 tmp48        [V65,T04] (  3, 192   )     ref  ->  rdi         "argument with side effect"
 ;  V66 tmp49        [V66,T05] (  3, 192   )     ref  ->  rdi         "argument with side effect"
 ;  V67 tmp50        [V67,T16] (  3,  48   )     ref  ->  rdi         "argument with side effect"
 ;  V68 tmp51        [V68,T17] (  3,  48   )     ref  ->  rdi         "argument with side effect"
 ;  V69 tmp52        [V69,T18] (  3,  48   )     ref  ->  rdi         "argument with side effect"
 ;  V70 tmp53        [V70,T19] (  3,  48   )     ref  ->  rdi         "argument with side effect"
 ;  V71 tmp54        [V71,T20] (  3,  48   )     ref  ->  rdi         "argument with side effect"
 ;  V72 tmp55        [V72,T43] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V73 tmp56        [V73,T44] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V74 tmp57        [V74,T45] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V75 tmp58        [V75,T46] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V76 tmp59        [V76,T47] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V77 tmp60        [V77,T48] (  3,  12   )     ref  ->  rdi         "argument with side effect"
 ;  V78 cse0         [V78,T64] (  3,   6   )     int  ->  rax         "CSE #04: conservative"
 ;  V79 cse1         [V79,T65] (  3,   6   )     int  ->  rax         "CSE #05: conservative"
 ;  V80 cse2         [V80,T66] (  3,   6   )     int  ->  rax         "CSE #06: conservative"
 ;  V81 cse3         [V81,T02] ( 16, 296   )    long  ->  registers   multi-def "CSE #07: aggressive"
 ;  V82 cse4         [V82,T03] (  4, 192   )    long  ->  rdi         "CSE #33: aggressive"
-;  V83 cse5         [V83,T07] ( 15, 156   )    long  ->  rdi         multi-def "CSE #02: aggressive"
+;  V83 cse5         [V83,T06] ( 15, 156   )    long  ->  rdi         multi-def "CSE #02: aggressive"
 ;  V84 cse6         [V84,T14] (  3,  96   )    long  ->  rdi         "CSE #34: moderate"
-;  V85 cse7         [V85,T22] (  4,  32   )    long  ->  rcx         "CSE #27: moderate"
+;  V85 cse7         [V85,T22] (  4,  32   )    long  ->  rax         "CSE #27: moderate"
 ;  V86 cse8         [V86,T23] (  4,  32   )    long  ->  rax         "CSE #29: moderate"
 ;  V87 cse9         [V87,T24] (  4,  32   )    long  ->  rax         "CSE #31: moderate"
 ;  V88 cse10        [V88,T33] (  3,  24   )    long  ->  rdi         "CSE #28: moderate"
 ;  V89 cse11        [V89,T34] (  3,  24   )    long  ->  rdi         "CSE #30: moderate"
 ;  V90 cse12        [V90,T35] (  3,  24   )    long  ->  rdi         "CSE #32: moderate"
 ;  V91 cse13        [V91,T53] (  4,   8   )    long  ->  rax         "CSE #15: conservative"
 ;  V92 cse14        [V92,T54] (  4,   8   )    long  ->  rax         "CSE #17: conservative"
 ;  V93 cse15        [V93,T55] (  4,   8   )    long  ->  rax         "CSE #19: conservative"
 ;  V94 cse16        [V94,T67] (  3,   6   )    long  ->  rdi         "CSE #01: conservative"
 ;  V95 cse17        [V95,T68] (  3,   6   )    long  ->  rdi         "CSE #16: conservative"
 ;  V96 cse18        [V96,T69] (  3,   6   )    long  ->  rdi         "CSE #18: conservative"
 ;  V97 cse19        [V97,T70] (  3,   6   )    long  ->  rdi         "CSE #20: conservative"
 ;  V98 cse20        [V98,T71] (  3,   6   )    long  ->  rdi         "CSE #21: conservative"
 ;  V99 rat0         [V99,T49] (  3,  12   )     int  ->  rdx         "ReplaceWithLclVar is creating a new local variable"
 ;  V100 rat1        [V100,T50] (  3,  12   )     int  ->  rdx         "ReplaceWithLclVar is creating a new local variable"
 ;  V101 rat2        [V101,T51] (  3,  12   )     int  ->  rdx         "ReplaceWithLclVar is creating a new local variable"
 ;
 ; Lcl frame size = 24
 
 G_M32130_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     r12
        push     rbx
        sub      rsp, 24
        lea      rbp, [rsp+0x40]
        mov      dword ptr [rbp-0x2C], r8d
        mov      r15, rdi
        mov      r13, rsi
        mov      r12d, edx
        mov      r14, rcx
        mov      rbx, r9
 						;; size=38 bbWeight=1 PerfScore 9.00
 G_M32130_IG02:
        xor      ecx, ecx
        test     rbx, rbx
        mov      dword ptr [rbp-0x30], ecx
        je       SHORT G_M32130_IG04
 						;; size=10 bbWeight=1 PerfScore 2.50
 G_M32130_IG03:
        movzx    rcx, word  ptr [rbx+0x34]
        mov      dword ptr [rbp-0x30], ecx
 						;; size=7 bbWeight=0.50 PerfScore 1.50
 G_M32130_IG04:
        mov      rdi, 0xD1FFAB1E      ; System.Text.EncodingByteBuffer
        call     CORINFO_HELP_NEWSFAST
        mov      gword ptr [rbp-0x38], rax
        mov      dword ptr [rsp], r12d
        mov      rdi, rax
        mov      rsi, r15
        mov      rdx, rbx
        mov      rcx, r14
        mov      r8d, dword ptr [rbp-0x2C]
        mov      r9, r13
        mov      r10, 0xD1FFAB1E      ; code for System.Text.EncodingByteBuffer:.ctor(System.Text.EncodingNLS,System.Text.EncoderNLS,ulong,int,ulong,int):this
        call     [r10]System.Text.EncodingByteBuffer:.ctor(System.Text.EncodingNLS,System.Text.EncoderNLS,ulong,int,ulong,int):this
        mov      r13, gword ptr [rbp-0x38]
        jmp      SHORT G_M32130_IG09
 						;; size=61 bbWeight=1 PerfScore 11.75
 G_M32130_IG05:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG06
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG07
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG07
 						;; size=27 bbWeight=32 PerfScore 424.00
 G_M32130_IG06:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=32 PerfScore 288.00
 G_M32130_IG07:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        xor      eax, eax
 						;; size=38 bbWeight=32 PerfScore 536.00
 G_M32130_IG08:
        test     eax, eax
        mov      dword ptr [rbp-0x30], r12d
        je       G_M32130_IG23
 						;; size=12 bbWeight=64 PerfScore 144.00
 G_M32130_IG09:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x48]
        call     [rax]System.Text.EncoderFallbackBuffer:get_Remaining():int:this
        test     eax, eax
        jg       SHORT G_M32130_IG11
 						;; size=17 bbWeight=512 PerfScore 5248.00
 G_M32130_IG10:
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x48]
        jae      G_M32130_IG23
 						;; size=14 bbWeight=128 PerfScore 768.00
 G_M32130_IG11:
        lea      r12, bword ptr [r13+0x58]
        mov      rdi, gword ptr [r12+0x08]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x30]System.Text.EncoderFallbackBuffer:GetNextChar():ushort:this
        mov      esi, eax
        test     esi, esi
        setne    dil
        mov      byte  ptr [r12+0x26], dil
        test     esi, esi
        jne      SHORT G_M32130_IG12
        xor      edi, edi
        mov      dword ptr [r12+0x20], edi
 						;; size=43 bbWeight=2 PerfScore 29.00
 G_M32130_IG12:
        test     esi, esi
        jne      SHORT G_M32130_IG13
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x48]
        jae      SHORT G_M32130_IG13
        lea      rsi, [rdi+0x02]
        mov      qword ptr [r13+0x38], rsi
        movzx    rsi, word  ptr [rdi]
 						;; size=25 bbWeight=2 PerfScore 21.50
 G_M32130_IG13:
        mov      r12d, dword ptr [rbp-0x30]
        test     r12d, r12d
        jne      G_M32130_IG53
 						;; size=13 bbWeight=2 PerfScore 4.50
 G_M32130_IG14:
        cmp      esi, 127
        jle      G_M32130_IG48
        lea      edi, [rsi-0xD800]
        cmp      edi, 0x3FF
        jbe      G_M32130_IG47
        lea      edi, [rsi-0xDC00]
        cmp      edi, 0x3FF
        jbe      G_M32130_IG46
        mov      rdi, qword ptr [r15+0x70]
        mov      eax, esi
-       movzx    rcx, word  ptr [rdi+2*rax]
+       movzx    rax, word  ptr [rdi+2*rax]
        mov      edi, esi
        shr      edi, 3
        movsxd   rdi, edi
-       mov      rax, qword ptr [r15+0x90]
-       movzx    rdi, byte  ptr [rdi+rax]
+       mov      rcx, qword ptr [r15+0x90]
+       movzx    rdi, byte  ptr [rdi+rcx]
        test     edi, edi
        je       SHORT G_M32130_IG15
        and      esi, 7
        bt       edi, esi
        jb       G_M32130_IG28
 						;; size=91 bbWeight=8 PerfScore 136.00
 G_M32130_IG15:
        mov      rdi, qword ptr [r13+0x20]
        test     rdi, rdi
        je       SHORT G_M32130_IG17
-       mov      rax, qword ptr [r13+0x30]
-       dec      rax
-       cmp      rdi, rax
+       mov      rcx, qword ptr [r13+0x30]
+       dec      rcx
+       cmp      rdi, rcx
        jae      SHORT G_M32130_IG20
 						;; size=21 bbWeight=64 PerfScore 432.00
 G_M32130_IG16:
-       lea      rax, [rdi+0x01]
-       mov      qword ptr [r13+0x20], rax
-       mov      eax, ecx
-       sar      eax, 8
-       mov      byte  ptr [rdi], al
+       lea      rcx, [rdi+0x01]
+       mov      qword ptr [r13+0x20], rcx
+       mov      ecx, eax
+       sar      ecx, 8
+       mov      byte  ptr [rdi], cl
 						;; size=15 bbWeight=32 PerfScore 104.00
 G_M32130_IG17:
        inc      dword ptr [r13+0x50]
        mov      rdi, qword ptr [r13+0x20]
        test     rdi, rdi
        je       SHORT G_M32130_IG19
 						;; size=13 bbWeight=64 PerfScore 400.00
 G_M32130_IG18:
        cmp      rdi, qword ptr [r13+0x30]
        jae      G_M32130_IG05
-       lea      rax, [rdi+0x01]
-       mov      qword ptr [r13+0x20], rax
-       mov      byte  ptr [rdi], cl
+       lea      rcx, [rdi+0x01]
+       mov      qword ptr [r13+0x20], rcx
+       mov      byte  ptr [rdi], al
 						;; size=20 bbWeight=32 PerfScore 208.00
 G_M32130_IG19:
        inc      dword ptr [r13+0x50]
        mov      eax, 1
        jmp      G_M32130_IG08
 						;; size=14 bbWeight=32 PerfScore 168.00
 G_M32130_IG20:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG27
 						;; size=7 bbWeight=64 PerfScore 256.00
 G_M32130_IG21:
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG22
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
 						;; size=18 bbWeight=32 PerfScore 232.00
 G_M32130_IG22:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        mov      dword ptr [rbp-0x30], r12d
 						;; size=40 bbWeight=64 PerfScore 1120.00
 G_M32130_IG23:
        test     rbx, rbx
        je       SHORT G_M32130_IG25
 						;; size=5 bbWeight=128 PerfScore 160.00
 G_M32130_IG24:
        cmp      byte  ptr [rbx+0x36], 0
        je       G_M32130_IG79
 						;; size=10 bbWeight=2 PerfScore 8.00
 G_M32130_IG25:
        mov      r12d, dword ptr [rbp-0x30]
        test     r12d, r12d
        jle      G_M32130_IG78
        lea      rdi, bword ptr [r13+0x58]
        lea      rdx, bword ptr [r13+0x38]
        mov      esi, r12d
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
        call     [rax]System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
 						;; size=36 bbWeight=4 PerfScore 27.00
 G_M32130_IG26:
        xor      r12d, r12d
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG09
 						;; size=12 bbWeight=8 PerfScore 26.00
 G_M32130_IG27:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
        jmp      SHORT G_M32130_IG22
 						;; size=16 bbWeight=32 PerfScore 352.00
 G_M32130_IG28:
-       mov      eax, 0xD1FFAB1E
-       mov      edx, ecx
-       imul     rax, rdx
-       shr      rax, 35
-       imul     eax, eax, 10
-       mov      edx, ecx
-       sub      edx, eax
+       imul     edx, eax, 0xD1FFAB1E
+       imul     rdx, rdx, 10
+       shr      rdx, 32
        add      edx, 48
        movzx    rdi, dl
-       mov      eax, 0xD1FFAB1E
-       mov      ecx, ecx
-       imul     rax, rcx
-       shr      rax, 35
-       movzx    rcx, ax
-       mov      rdx, 0xD1FFAB1E
-       mov      eax, ecx
-       mul      rdx:rax, rdx
-       imul     eax, edx, 126
-       mov      edx, ecx
-       sub      edx, eax
-       add      edx, 129
-       movzx    rsi, dl
-       mov      rdx, 0xD1FFAB1E
-       mov      eax, ecx
-       mul      rdx:rax, rdx
-       movzx    rcx, dx
-       mov      eax, 0xD1FFAB1E
-       mov      edx, ecx
+       mov      edx, 0xD1FFAB1E
+       mov      eax, eax
        imul     rax, rdx
        shr      rax, 35
-       imul     eax, eax, 10
-       mov      edx, ecx
-       sub      edx, eax
+       movzx    rax, ax
+       imul     edx, eax, 0xD1FFAB1E
+       imul     rdx, rdx, 126
+       shr      rdx, 32
+       add      edx, 129
+       movzx    rcx, dl
+       mov      rdx, 0xD1FFAB1E
+       mul      rdx:rax, rdx
+       movzx    rax, dx
+       imul     edx, eax, 0xD1FFAB1E
+       imul     rdx, rdx, 10
+       shr      rdx, 32
        add      edx, 48
-       movzx    rax, dl
-       mov      edx, 0xD1FFAB1E
-       imul     rcx, rdx
-       shr      rcx, 35
-       movzx    rcx, cx
-       mov      rdx, qword ptr [r13+0x20]
-       test     rdx, rdx
+       movzx    rdx, dl
+       mov      esi, 0xD1FFAB1E
+       imul     rax, rsi
+       shr      rax, 35
+       movzx    rax, ax
+       mov      rsi, qword ptr [r13+0x20]
+       test     rsi, rsi
        je       SHORT G_M32130_IG29
        mov      r8, qword ptr [r13+0x30]
        add      r8, -3
-       cmp      rdx, r8
+       cmp      rsi, r8
        jae      G_M32130_IG43
-       lea      r8, [rdx+0x01]
+       lea      r8, [rsi+0x01]
        mov      qword ptr [r13+0x20], r8
-       add      ecx, 129
-       mov      byte  ptr [rdx], cl
-						;; size=183 bbWeight=8 PerfScore 304.00
+       add      eax, 129
+       mov      byte  ptr [rsi], al
+						;; size=155 bbWeight=8 PerfScore 274.00
 G_M32130_IG29:
        inc      dword ptr [r13+0x50]
-       mov      rcx, qword ptr [r13+0x20]
-       test     rcx, rcx
+       mov      rax, qword ptr [r13+0x20]
+       test     rax, rax
        je       SHORT G_M32130_IG30
-       mov      rdx, qword ptr [r13+0x30]
-       add      rdx, -2
-       cmp      rcx, rdx
+       mov      rsi, qword ptr [r13+0x30]
+       add      rsi, -2
+       cmp      rax, rsi
        jae      G_M32130_IG40
-       lea      rdx, [rcx+0x01]
-       mov      qword ptr [r13+0x20], rdx
-       mov      byte  ptr [rcx], al
+       lea      rsi, [rax+0x01]
+       mov      qword ptr [r13+0x20], rsi
+       mov      byte  ptr [rax], dl
 						;; size=40 bbWeight=8 PerfScore 98.00
 G_M32130_IG30:
        inc      dword ptr [r13+0x50]
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG31
-       mov      rcx, qword ptr [r13+0x30]
-       dec      rcx
-       cmp      rax, rcx
+       mov      rdx, qword ptr [r13+0x30]
+       dec      rdx
+       cmp      rax, rdx
        jae      G_M32130_IG37
-       lea      rcx, [rax+0x01]
-       mov      qword ptr [r13+0x20], rcx
-       mov      byte  ptr [rax], sil
-						;; size=40 bbWeight=8 PerfScore 98.00
+       lea      rdx, [rax+0x01]
+       mov      qword ptr [r13+0x20], rdx
+       mov      byte  ptr [rax], cl
+						;; size=39 bbWeight=8 PerfScore 98.00
 G_M32130_IG31:
        inc      dword ptr [r13+0x50]
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG32
        cmp      rax, qword ptr [r13+0x30]
        jae      SHORT G_M32130_IG33
        lea      rcx, [rax+0x01]
        mov      qword ptr [r13+0x20], rcx
        mov      byte  ptr [rax], dil
 						;; size=30 bbWeight=8 PerfScore 102.00
 G_M32130_IG32:
        inc      dword ptr [r13+0x50]
        mov      eax, 1
        jmp      SHORT G_M32130_IG36
 						;; size=11 bbWeight=8 PerfScore 42.00
 G_M32130_IG33:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG34
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG35
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG35
 						;; size=27 bbWeight=8 PerfScore 106.00
 G_M32130_IG34:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=8 PerfScore 72.00
 G_M32130_IG35:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        xor      eax, eax
 						;; size=38 bbWeight=8 PerfScore 134.00
 G_M32130_IG36:
        test     eax, eax
        mov      dword ptr [rbp-0x30], r12d
        jne      G_M32130_IG09
        jmp      G_M32130_IG23
 						;; size=17 bbWeight=8 PerfScore 34.00
 G_M32130_IG37:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG38
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG39
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG39
 						;; size=27 bbWeight=8 PerfScore 106.00
 G_M32130_IG38:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=8 PerfScore 72.00
 G_M32130_IG39:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=45 bbWeight=8 PerfScore 156.00
 G_M32130_IG40:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG41
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG42
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG42
 						;; size=27 bbWeight=8 PerfScore 106.00
 G_M32130_IG41:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=8 PerfScore 72.00
 G_M32130_IG42:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=45 bbWeight=8 PerfScore 156.00
 G_M32130_IG43:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG44
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG45
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG45
 						;; size=27 bbWeight=8 PerfScore 106.00
 G_M32130_IG44:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=8 PerfScore 72.00
 G_M32130_IG45:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=45 bbWeight=8 PerfScore 156.00
 G_M32130_IG46:
        lea      rdi, bword ptr [r13+0x58]
        lea      rdx, bword ptr [r13+0x38]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
        call     [rax]System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
        test     eax, eax
        mov      dword ptr [rbp-0x30], r12d
        jne      G_M32130_IG09
        jmp      G_M32130_IG23
 						;; size=37 bbWeight=8 PerfScore 68.00
 G_M32130_IG47:
        mov      r12d, esi
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG09
 						;; size=12 bbWeight=8 PerfScore 26.00
 G_M32130_IG48:
-       mov      rdx, qword ptr [r13+0x20]
-       test     rdx, rdx
+       mov      rdi, qword ptr [r13+0x20]
+       test     rdi, rdi
        je       SHORT G_M32130_IG49
-       cmp      rdx, qword ptr [r13+0x30]
+       cmp      rdi, qword ptr [r13+0x30]
        jae      SHORT G_M32130_IG50
-       mov      rdi, rdx
        lea      rax, [rdi+0x01]
        mov      qword ptr [r13+0x20], rax
        mov      byte  ptr [rdi], sil
-						;; size=29 bbWeight=8 PerfScore 80.00
+						;; size=26 bbWeight=8 PerfScore 78.00
 G_M32130_IG49:
        inc      dword ptr [r13+0x50]
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG09
 						;; size=13 bbWeight=8 PerfScore 48.00
 G_M32130_IG50:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG51
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG52
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG52
 						;; size=27 bbWeight=8 PerfScore 106.00
 G_M32130_IG51:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=8 PerfScore 72.00
 G_M32130_IG52:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=45 bbWeight=8 PerfScore 156.00
 G_M32130_IG53:
        lea      eax, [rsi-0xDC00]
        cmp      eax, 0x3FF
        ja       G_M32130_IG75
        add      r12d, -0xD800
        shl      r12d, 10
        lea      edi, [r12+rsi-0xDC00]
        mov      edx, 0xD1FFAB1E
        mov      eax, edx
        imul     edx:eax, edi
        mov      eax, edx
        shr      eax, 31
        sar      edx, 2
        add      eax, edx
        lea      edx, [rax+4*rax]
        add      edx, edx
        sub      edi, edx
        add      edi, 48
        movzx    rdi, dil
        mov      ecx, eax
        mov      edx, 0xD1FFAB1E
        mov      eax, edx
        imul     edx:eax, ecx
        add      edx, ecx
        mov      eax, edx
        shr      eax, 31
        sar      edx, 6
        add      eax, edx
        imul     edx, eax, 126
        sub      ecx, edx
        add      ecx, 129
        movzx    rcx, cl
        mov      esi, eax
        mov      edx, 0xD1FFAB1E
        mov      eax, edx
        imul     edx:eax, esi
        mov      eax, edx
        shr      eax, 31
        sar      edx, 2
        add      eax, edx
        lea      edx, [rax+4*rax]
        add      edx, edx
        sub      esi, edx
        add      esi, 48
        movzx    rdx, sil
        mov      esi, eax
        xor      r12d, r12d
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG54
        mov      r8, qword ptr [r13+0x30]
        add      r8, -3
        cmp      rax, r8
        jae      G_M32130_IG68
        lea      r8, [rax+0x01]
        mov      qword ptr [r13+0x20], r8
        add      esi, 144
        mov      byte  ptr [rax], sil
 						;; size=189 bbWeight=2 PerfScore 70.00
 G_M32130_IG54:
        inc      dword ptr [r13+0x50]
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG55
        mov      rsi, qword ptr [r13+0x30]
        add      rsi, -2
        cmp      rax, rsi
        jae      G_M32130_IG65
        lea      rsi, [rax+0x01]
        mov      qword ptr [r13+0x20], rsi
        mov      byte  ptr [rax], dl
 						;; size=40 bbWeight=2 PerfScore 24.50
 G_M32130_IG55:
        inc      dword ptr [r13+0x50]
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG56
        mov      rdx, qword ptr [r13+0x30]
        dec      rdx
        cmp      rax, rdx
        jae      G_M32130_IG62
        lea      rdx, [rax+0x01]
        mov      qword ptr [r13+0x20], rdx
        mov      byte  ptr [rax], cl
 						;; size=39 bbWeight=2 PerfScore 24.50
 G_M32130_IG56:
        inc      dword ptr [r13+0x50]
        mov      rax, qword ptr [r13+0x20]
        test     rax, rax
        je       SHORT G_M32130_IG57
        cmp      rax, qword ptr [r13+0x30]
        jae      SHORT G_M32130_IG58
        lea      rcx, [rax+0x01]
        mov      qword ptr [r13+0x20], rcx
        mov      byte  ptr [rax], dil
 						;; size=30 bbWeight=2 PerfScore 25.50
 G_M32130_IG57:
        inc      dword ptr [r13+0x50]
        mov      eax, 1
        jmp      SHORT G_M32130_IG61
 						;; size=11 bbWeight=2 PerfScore 10.50
 G_M32130_IG58:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG59
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG60
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG60
 						;; size=27 bbWeight=2 PerfScore 26.50
 G_M32130_IG59:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=2 PerfScore 18.00
 G_M32130_IG60:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        xor      eax, eax
 						;; size=38 bbWeight=2 PerfScore 33.50
 G_M32130_IG61:
        test     eax, eax
        jne      G_M32130_IG26
        jmp      G_M32130_IG71
 						;; size=13 bbWeight=2 PerfScore 6.50
 G_M32130_IG62:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG63
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG64
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG64
 						;; size=27 bbWeight=2 PerfScore 26.50
 G_M32130_IG63:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=2 PerfScore 18.00
 G_M32130_IG64:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        jmp      G_M32130_IG71
 						;; size=41 bbWeight=2 PerfScore 37.00
 G_M32130_IG65:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG66
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG67
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG67
 						;; size=27 bbWeight=2 PerfScore 26.50
 G_M32130_IG66:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=2 PerfScore 18.00
 G_M32130_IG67:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        jmp      SHORT G_M32130_IG71
 						;; size=38 bbWeight=2 PerfScore 37.00
 G_M32130_IG68:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG69
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG70
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG70
 						;; size=27 bbWeight=2 PerfScore 26.50
 G_M32130_IG69:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=2 PerfScore 18.00
 G_M32130_IG70:
        mov      rdx, qword ptr [r13+0x20]
        cmp      rdx, qword ptr [r13+0x28]
        sete     dl
        movzx    rdx, dl
        mov      rsi, gword ptr [r13+0x10]
        mov      rdi, gword ptr [r13+0x08]
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
        cmp      dword ptr [rdi], edi
        call     [rax]System.Text.EncodingNLS:ThrowBytesOverflow(System.Text.EncoderNLS,ubyte):this
 						;; size=36 bbWeight=2 PerfScore 33.00
 G_M32130_IG71:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG74
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        ja       SHORT G_M32130_IG73
 						;; size=17 bbWeight=2 PerfScore 20.00
 G_M32130_IG72:
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=9 bbWeight=1 PerfScore 3.00
 G_M32130_IG73:
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=17 bbWeight=2 PerfScore 8.50
 G_M32130_IG74:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=23 bbWeight=2 PerfScore 24.00
 G_M32130_IG75:
        cmp      byte  ptr [r13+0x7E], 0
        jne      SHORT G_M32130_IG76
        mov      rdi, qword ptr [r13+0x38]
        cmp      rdi, qword ptr [r13+0x40]
        jbe      SHORT G_M32130_IG77
        add      rdi, -2
        mov      qword ptr [r13+0x38], rdi
        jmp      SHORT G_M32130_IG77
 						;; size=27 bbWeight=2 PerfScore 26.50
 G_M32130_IG76:
        mov      rdi, gword ptr [r13+0x18]
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x38]System.Text.EncoderFallbackBuffer:MovePrevious():ubyte:this
 						;; size=14 bbWeight=2 PerfScore 18.00
 G_M32130_IG77:
        lea      rdi, bword ptr [r13+0x58]
        lea      rdx, bword ptr [r13+0x38]
        mov      esi, r12d
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
        call     [rax]System.Text.EncoderFallbackBufferHelper:InternalFallback(ushort,byref):ubyte:this
        test     eax, eax
        jne      G_M32130_IG26
        xor      r12d, r12d
        mov      dword ptr [rbp-0x30], r12d
        jmp      G_M32130_IG23
 						;; size=43 bbWeight=2 PerfScore 18.00
 G_M32130_IG78:
        test     rbx, rbx
        mov      dword ptr [rbp-0x30], r12d
        je       SHORT G_M32130_IG81
 						;; size=9 bbWeight=1 PerfScore 2.25
 G_M32130_IG79:
        test     r14, r14
        je       SHORT G_M32130_IG80
        mov      r12d, dword ptr [rbp-0x30]
        mov      word  ptr [rbx+0x34], r12w
 						;; size=14 bbWeight=0.50 PerfScore 1.62
 G_M32130_IG80:
        mov      rdi, r13
        mov      rax, 0xD1FFAB1E      ; code for System.Text.EncodingByteBuffer:get_CharsUsed():int:this
        call     [rax]System.Text.EncodingByteBuffer:get_CharsUsed():int:this
        mov      dword ptr [rbx+0x30], eax
 						;; size=18 bbWeight=0.50 PerfScore 2.25
 G_M32130_IG81:
        mov      eax, dword ptr [r13+0x50]
 						;; size=4 bbWeight=1 PerfScore 2.00
 G_M32130_IG82:
        add      rsp, 24
        pop      rbx
        pop      r12
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=15 bbWeight=1 PerfScore 4.25
 
-; Total bytes of code 2321, prolog size 19, PerfScore 14275.12, instruction count 639, allocated bytes for code 2321 (MethodHash=d6c5827d) for method System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):int:this (FullOpts)
+; Total bytes of code 2289, prolog size 19, PerfScore 14243.12, instruction count 626, allocated bytes for code 2289 (MethodHash=d6c5827d) for method System.Text.GB18030Encoding:GetBytes(ulong,int,ulong,int,System.Text.EncoderNLS):int:this (FullOpts)
 ; ============================================================

-4 (-0.80 % of base) - System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this

 ; Assembly listing for method System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this (FullOpts)
 ; Emitting BLENDED_CODE for X64 with AVX512 - Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 3 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T10] (  3,  3   )     ref  ->  rdi         this class-hnd single-def <System.Diagnostics.Tracing.EventSource>
-;  V01 arg1         [V01,T11] (  3,  3   )     ref  ->  rsi         class-hnd single-def <ubyte[]>
-;  V02 loc0         [V02,T14] (  3,  1.50)    long  ->  r14        
+;  V00 this         [V00,T09] (  3,  3   )     ref  ->  rdi         this class-hnd single-def <System.Diagnostics.Tracing.EventSource>
+;  V01 arg1         [V01,T10] (  3,  3   )     ref  ->  rsi         class-hnd single-def <ubyte[]>
+;  V02 loc0         [V02,T13] (  3,  1.50)    long  ->  r14        
 ;  V03 loc1         [V03    ] (  2,  1   )     ref  ->  [rbp-0x50]  must-init pinned class-hnd ptr <ubyte[]>
 ;  V04 loc2         [V04    ] (  2, 16.50)  struct (16) [rbp-0x60]  do-not-enreg[XS] addr-exposed ld-addr-op <System.Diagnostics.Tracing.EventDescriptor>
 ;  V05 loc3         [V05    ] ( 12, 59.50)  struct ( 8) [rbp-0x68]  do-not-enreg[XSF] addr-exposed ld-addr-op ptr <System.Diagnostics.Tracing.ManifestEnvelope>
 ;  V06 loc4         [V06,T00] (  8, 96.50)     int  ->  r15        
 ;* V07 loc5         [V07    ] (  0,  0   )    long  ->  zero-ref    ptr
-;  V08 loc6         [V08,T03] ( 10, 92.50)     int  ->  r14        
+;  V08 loc6         [V08,T02] ( 10, 92.50)     int  ->  r14        
 ;  V09 OutArgs      [V09    ] (  1,  1   )  struct (16) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace"
 ;  V10 tmp1         [V10    ] (  9, 82.50)  struct (32) [rbp-0x48]  do-not-enreg[XSF] addr-exposed ld-addr-op ptr unsafe-buffer "stackallocLocal"
 ;* V11 tmp2         [V11    ] (  0,  0   )    long  ->  zero-ref    "dup spill"
-;  V12 tmp3         [V12,T05] (  3, 48   )     int  ->  rdi         "Inline return value spill temp"
+;  V12 tmp3         [V12,T04] (  3, 48   )     int  ->  rdi         "Inline return value spill temp"
 ;* V13 tmp4         [V13    ] (  0,  0   )   ubyte  ->  zero-ref    "Inline return value spill temp"
 ;* V14 tmp5         [V14    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.Diagnostics.Tracing.EventSource+OverrideEventProvider>
-;  V15 tmp6         [V15,T06] (  3, 36   )     int  ->  r13         "Inline stloc first use temp"
-;  V16 tmp7         [V16,T13] (  2,  2   )    long  ->  r14         "Cast away GC"
+;  V15 tmp6         [V15,T05] (  3, 36   )     int  ->  r13         "Inline stloc first use temp"
+;  V16 tmp7         [V16,T12] (  2,  2   )    long  ->  r14         "Cast away GC"
 ;  V17 tmp8         [V17,T01] (  3, 96   )     ref  ->  rdi         "argument with side effect"
 ;  V18 GsCookie     [V18    ] (  1,  1   )    long  ->  [rbp-0x28]  do-not-enreg[X] addr-exposed "GSSecurityCookie"
-;  V19 tmp10        [V19,T04] (  5, 50   )     ref  ->  rbx         single-def "shadowVar"
-;  V20 tmp11        [V20,T12] (  5,  3.50)     ref  ->  rsi         single-def "shadowVar"
-;  V21 cse0         [V21,T09] (  3, 12   )    long  ->  rax         "CSE #02: aggressive"
-;  V22 cse1         [V22,T15] (  3,  1.50)     int  ->  r15         "CSE #01: moderate"
-;  V23 rat0         [V23,T07] (  2, 16   )    long  ->  rax         "TLS field access"
-;  V24 rat1         [V24,T08] (  2, 16   )    long  ->  rax         "TLS access"
-;  V25 rat2         [V25,T02] (  3, 96   )     int  ->  rdi         "ReplaceWithLclVar is creating a new local variable"
+;  V19 tmp10        [V19,T03] (  5, 50   )     ref  ->  rbx         single-def "shadowVar"
+;  V20 tmp11        [V20,T11] (  5,  3.50)     ref  ->  rsi         single-def "shadowVar"
+;  V21 cse0         [V21,T08] (  3, 12   )    long  ->  rax         "CSE #02: aggressive"
+;  V22 cse1         [V22,T14] (  3,  1.50)     int  ->  r15         "CSE #01: moderate"
+;  V23 rat0         [V23,T06] (  2, 16   )    long  ->  rax         "TLS field access"
+;  V24 rat1         [V24,T07] (  2, 16   )    long  ->  rax         "TLS access"
 ;
 ; Lcl frame size = 96
 
 G_M11069_IG01:
        push     rbp
        push     r15
        push     r14
        push     r13
        push     rbx
        sub      rsp, 96
        lea      rbp, [rsp+0x80]
        xor      eax, eax
        mov      qword ptr [rbp-0x50], rax
        mov      qword ptr [rbp-0x28], 0xD1FFAB1E
 						;; size=34 bbWeight=1 PerfScore 8.00
 G_M11069_IG02:
        mov      rbx, rdi
        test     rsi, rsi
        je       G_M11069_IG18
 						;; size=12 bbWeight=1 PerfScore 1.50
 G_M11069_IG03:
        mov      gword ptr [rbp-0x50], rsi
        mov      r15d, dword ptr [rsi+0x08]
        test     r15d, r15d
        je       SHORT G_M11069_IG04
        add      rsi, 16
        mov      r14, rsi
        jmp      SHORT G_M11069_IG05
 						;; size=22 bbWeight=0.50 PerfScore 3.38
 G_M11069_IG04:
        xor      r14d, r14d
 						;; size=3 bbWeight=0.50 PerfScore 0.12
 G_M11069_IG05:
        mov      dword ptr [rsp], 0xFFFE
        mov      rdi, 0xD1FFAB1E
        mov      qword ptr [rsp+0x08], rdi
        lea      rdi, [rbp-0x60]
        mov      esi, 0xFFFE
        mov      edx, 1
        xor      ecx, ecx
        xor      r8d, r8d
        mov      r9d, 254
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Tracing.EventDescriptor:.ctor(int,ubyte,ubyte,ubyte,ubyte,int,long):this
        call     [rax]System.Diagnostics.Tracing.EventDescriptor:.ctor(int,ubyte,ubyte,ubyte,ubyte,int,long):this
        xor      eax, eax
        mov      qword ptr [rbp-0x68], rax
        mov      byte  ptr [rbp-0x68], 1
        mov      byte  ptr [rbp-0x67], 1
        mov      byte  ptr [rbp-0x66], 0
        mov      byte  ptr [rbp-0x65], 91
        mov      word  ptr [rbp-0x62], 0
        lea      rax, [rbp-0x68]
        mov      qword ptr [rbp-0x48], rax
        mov      dword ptr [rbp-0x40], 8
        xor      eax, eax
        mov      dword ptr [rbp-0x3C], eax
        mov      qword ptr [rbp-0x38], r14
 						;; size=111 bbWeight=0.50 PerfScore 9.12
 G_M11069_IG06:
        mov      dword ptr [rbp-0x2C], eax
        mov      r14d, 0xF700
        jmp      SHORT G_M11069_IG08
 						;; size=11 bbWeight=0.50 PerfScore 1.62
 G_M11069_IG07:
        shr      r14d, 1
 						;; size=3 bbWeight=4 PerfScore 2.00
 G_M11069_IG08:
        lea      eax, [r15+r14-0x01]
        cdq      
        idiv     edx:eax, r14d
        mov      word  ptr [rbp-0x64], ax
        test     r15d, r15d
        jle      G_M11069_IG17
 						;; size=22 bbWeight=4 PerfScore 115.00
 G_M11069_IG09:
        cmp      r15d, r14d
        jg       SHORT G_M11069_IG11
 						;; size=5 bbWeight=32 PerfScore 40.00
 G_M11069_IG10:
        mov      edi, r15d
        jmp      SHORT G_M11069_IG12
 						;; size=5 bbWeight=8 PerfScore 18.00
 G_M11069_IG11:
        mov      edi, r14d
 						;; size=3 bbWeight=8 PerfScore 2.00
 G_M11069_IG12:
        mov      dword ptr [rbp-0x30], edi
        cmp      gword ptr [rbx+0x30], 0
        je       SHORT G_M11069_IG14
 						;; size=10 bbWeight=32 PerfScore 160.00
 G_M11069_IG13:
        mov      rdi, gword ptr [rbx+0x30]
        mov      rdi, gword ptr [rdi+0x08]
        lea      rsi, [rbp-0x48]
        mov      qword ptr [rsp], rsi
        lea      rsi, [rbp-0x60]
        xor      edx, edx
        xor      ecx, ecx
        xor      r8d, r8d
        mov      r9d, 2
        mov      rax, qword ptr [rdi]
        mov      rax, qword ptr [rax+0x48]
        call     [rax]System.Diagnostics.Tracing.EventProviderImpl:EventWriteTransfer(byref,long,ulong,ulong,int,ulong):int:this
        mov      r13d, eax
        test     r13d, r13d
        jne      SHORT G_M11069_IG21
 						;; size=50 bbWeight=16 PerfScore 248.00
 G_M11069_IG14:
        sub      r15d, r14d
        mov      edi, r14d
        add      rdi, qword ptr [rbp-0x38]
        mov      qword ptr [rbp-0x38], rdi
        movzx    rdi, word  ptr [rbp-0x62]
        inc      edi
        mov      word  ptr [rbp-0x62], di
        movzx    rdi, word  ptr [rbp-0x62]
-       mov      eax, 0xD1FFAB1E
-       mov      ecx, edi
-       imul     rax, rcx
-       shr      rax, 34
-       lea      eax, [rax+4*rax]
-       sub      edi, eax
+       imul     edi, edi, 0xD1FFAB1E
+       lea      rdi, [rdi+4*rdi]
+       shr      rdi, 32
+       test     edi, edi
        jne      SHORT G_M11069_IG16
-						;; size=50 bbWeight=16 PerfScore 184.00
+						;; size=46 bbWeight=16 PerfScore 176.00
 G_M11069_IG15:
        mov      edi, 15
        mov      rax, 0xD1FFAB1E      ; code for System.Threading.Thread:Sleep(int)
        call     [rax]System.Threading.Thread:Sleep(int)
 						;; size=17 bbWeight=8 PerfScore 28.00
 G_M11069_IG16:
        test     r15d, r15d
        jg       G_M11069_IG09
 						;; size=9 bbWeight=16 PerfScore 20.00
 G_M11069_IG17:
        xor      rax, rax
        mov      gword ptr [rbp-0x50], rax
 						;; size=6 bbWeight=0.50 PerfScore 0.62
 G_M11069_IG18:
        cmp      qword ptr [rbp-0x28], 0xD1FFAB1E
        je       SHORT G_M11069_IG19
        call     CORINFO_HELP_FAIL_FAST
 						;; size=15 bbWeight=1 PerfScore 4.00
 G_M11069_IG19:
        nop      
 						;; size=1 bbWeight=1 PerfScore 0.25
 G_M11069_IG20:
        add      rsp, 96
        pop      rbx
        pop      r13
        pop      r14
        pop      r15
        pop      rbp
        ret      
 						;; size=13 bbWeight=1 PerfScore 3.75
 G_M11069_IG21:
        mov      rdi, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; function address
        call     rax
        add      rax, 56
        mov      dword ptr [rax+0x10], r13d
        cmp      dword ptr [rax+0x10], 2
        jne      SHORT G_M11069_IG22
        cmp      word  ptr [rbp-0x62], 0
        jne      SHORT G_M11069_IG22
        cmp      r14d, 256
        jg       G_M11069_IG07
 						;; size=56 bbWeight=4 PerfScore 52.00
 G_M11069_IG22:
        test     byte  ptr [rbx+0x94], 1
        je       SHORT G_M11069_IG17
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; 'SendManifest'
        xor      rdx, rdx
        mov      rax, 0xD1FFAB1E      ; code for System.Diagnostics.Tracing.EventSource:ThrowEventSourceException(System.String,System.Exception):this
        call     [rax]System.Diagnostics.Tracing.EventSource:ThrowEventSourceException(System.String,System.Exception):this
        jmp      G_M11069_IG17
 						;; size=41 bbWeight=0.50 PerfScore 5.00
 
-; Total bytes of code 499, prolog size 34, PerfScore 906.38, instruction count 130, allocated bytes for code 499 (MethodHash=a56ad4c2) for method System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this (FullOpts)
+; Total bytes of code 495, prolog size 34, PerfScore 898.38, instruction count 128, allocated bytes for code 495 (MethodHash=a56ad4c2) for method System.Diagnostics.Tracing.EventSource:SendManifest(ubyte[]):this (FullOpts)
 ; ============================================================

Larger list of diffs: https://gist.github.com/MihuBot/70ed73b977a326476c9f0e7973fc6fc6

[MihuBot]

@MihaZupan