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; Assembly listing for method System.DateTime:TryParse(System.ReadOnlySpan`1[ushort],byref):bool

; Emitting BLENDED_CODE for X64 CPU with AVX - Windows

; optimized code

; rsp based frame

; partially interruptible

; No PGO data

; 0 inlinees with PGO data; 1 single block inlinees; 1 inlinees without PGO data

; Final local variable assignments

;

; V00 arg0 [V00,T00] ( 3, 6 ) byref -> rsi single-def

; V00 arg0 [V00,T00] ( 4, 8 ) byref -> rcx single-def

; V01 arg1 [V01,T01] ( 3, 3 ) byref -> rdi single-def

; V01 arg1 [V01,T01] ( 4, 3 ) byref -> rsi single-def

; V02 OutArgs [V02 ] ( 1, 1 ) lclBlk (32) [rsp+00H] "OutgoingArgSpace"

;* V03 tmp1 [V03 ] ( 0, 0 ) byref -> zero-ref V05._reference(offs=0x00) P-INDEP "field V00._reference (fldOffset=0x0)"

; V03 tmp1 [V03,T05] ( 3, 2 ) bool -> rax "Inline return value spill temp"

;* V04 tmp2 [V04 ] ( 0, 0 ) int -> zero-ref V05._length(offs=0x08) P-INDEP "field V00._length (fldOffset=0x8)"

; V04 tmp2 [V04 ] ( 9, 8.50) struct (128) [rsp+30H] do-not-enreg[XSF] must-init addr-exposed ld-addr-op "Inline ldloca(s) first use temp"

;* V05 tmp3 [V05 ] ( 0, 0 ) struct (16) zero-ref "Promoted implicit byref"

;* V05 tmp3 [V05 ] ( 0, 0 ) struct (16) zero-ref "Inlining Arg"

; V06 tmp4 [V06,T02] ( 2, 4 ) ref -> rdx single-def "argument with side effect"

; V06 tmp4 [V06,T02] ( 2, 4 ) ref -> rdx class-hnd single-def "Inlining Arg"

;* V07 tmp5 [V07 ] ( 0, 0 ) struct ( 8) zero-ref "folding static ro fld struct"

;* V08 tmp6 [V08 ] ( 0, 0 ) struct (16) zero-ref "Inlining Arg"

;* V09 tmp7 [V09 ] ( 0, 0 ) byref -> zero-ref V16._reference(offs=0x00) P-INDEP "field V00._reference (fldOffset=0x0)"

;* V10 tmp8 [V10 ] ( 0, 0 ) int -> zero-ref V16._length(offs=0x08) P-INDEP "field V00._length (fldOffset=0x8)"

; V11 tmp9 [V11,T03] ( 3, 3 ) byref -> rdi single-def V05._reference(offs=0x00) P-INDEP "field V05._reference (fldOffset=0x0)"

; V12 tmp10 [V12,T04] ( 3, 3 ) int -> rbx V05._length(offs=0x08) P-INDEP "field V05._length (fldOffset=0x8)"

;* V13 tmp11 [V13,T06] ( 0, 0 ) long -> zero-ref V07._dateData(offs=0x00) P-INDEP "field V07._dateData (fldOffset=0x0)"

;* V14 tmp12 [V14 ] ( 0, 0 ) byref -> zero-ref V08._reference(offs=0x00) P-INDEP "field V08._reference (fldOffset=0x0)"

;* V15 tmp13 [V15 ] ( 0, 0 ) int -> zero-ref V08._length(offs=0x08) P-INDEP "field V08._length (fldOffset=0x8)"

;* V16 tmp14 [V16 ] ( 0, 0 ) struct (16) zero-ref "Promoted implicit byref"

; V17 tmp15 [V17 ] ( 3, 6 ) struct (16) [rsp+20H] do-not-enreg[XSF] must-init addr-exposed "by-value struct argument"

;

; Lcl frame size = 40

; Lcl frame size = 176

G_M61794_IG01:

push rdi

push rsi

sub rsp, 40

push rbx

mov rsi, rcx

sub rsp, 176

mov rdi, rdx

vxorps xmm4, xmm4

;; size=12 bbWeight=1 PerfScore 2.75

mov rax, -144

vmovdqa xmmword ptr [rsp+rax+B0H], xmm4

vmovdqa xmmword ptr [rsp+rax+C0H], xmm4

vmovdqa xmmword ptr [rsp+rax+D0H], xmm4

add rax, 48

jne SHORT -5 instr

mov rsi, rdx

;; size=60 bbWeight=1 PerfScore 11.33

G_M61794_IG02:

mov rdi, bword ptr [rcx]

mov ebx, dword ptr [rcx+08H]

call [System.Globalization.DateTimeFormatInfo:get_CurrentInfo():System.Globalization.DateTimeFormatInfo]

mov rdx, rax

mov rcx, rsi

mov bword ptr [rsp+90H], rdi

mov r9, rdi

mov dword ptr [rsp+98H], ebx

mov dword ptr [rsp+58H], -1

mov dword ptr [rsp+5CH], -1

mov dword ptr [rsp+60H], -1

mov rcx, 0xD1FFAB1E

mov qword ptr [rsp+50H], rcx

mov dword ptr [rsp+70H], -1

mov bword ptr [rsp+20H], rdi

mov dword ptr [rsp+28H], ebx

lea rcx, [rsp+20H]

lea r9, [rsp+30H]

xor r8d, r8d

;; size=18 bbWeight=1 PerfScore 4.00

call [System.DateTimeParse:TryParse(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,int,byref):bool]

test eax, eax

je SHORT G_M61794_IG04

;; size=109 bbWeight=1 PerfScore 22.00

G_M61794_IG03:

add rsp, 40

mov rax, qword ptr [rsp+88H]

mov qword ptr [rsi], rax

mov eax, 1

jmp SHORT G_M61794_IG05

;; size=18 bbWeight=0.50 PerfScore 2.12

G_M61794_IG04:

xor eax, eax

mov qword ptr [rsi], rax

;; size=5 bbWeight=0.50 PerfScore 0.62

G_M61794_IG05:

add rsp, 176

pop rbx

pop rsi

pop rdi

tail.jmp [System.DateTimeParse:TryParse(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,int,byref):bool]

ret

;; size=12 bbWeight=1 PerfScore 3.25

;; size=11 bbWeight=1 PerfScore 2.75

; Total bytes of code 42, prolog size 6, PerfScore 14.20, instruction count 14, allocated bytes for code 42 (MethodHash=e7870e9d) for method System.DateTime:TryParse(System.ReadOnlySpan`1[ushort],byref):bool

; Total bytes of code 203, prolog size 57, PerfScore 59.13, instruction count 43, allocated bytes for code 203 (MethodHash=e7870e9d) for method System.DateTime:TryParse(System.ReadOnlySpan`1[ushort],byref):bool

; ============================================================

Saved diffs

Original text

Open file

; Assembly listing for method System.DateTime:TryParse(System.ReadOnlySpan`1[ushort],byref):bool
; Emitting BLENDED_CODE for X64 CPU with AVX - Windows
; optimized code
; rsp based frame
; partially interruptible
; No PGO data
; Final local variable assignments
;
;  V00 arg0         [V00,T00] (  3,  6   )   byref  ->  rsi         single-def
;  V01 arg1         [V01,T01] (  3,  3   )   byref  ->  rdi         single-def
;  V02 OutArgs      [V02    ] (  1,  1   )  lclBlk (32) [rsp+00H]   "OutgoingArgSpace"
;* V03 tmp1         [V03    ] (  0,  0   )   byref  ->  zero-ref    V05._reference(offs=0x00) P-INDEP "field V00._reference (fldOffset=0x0)"
;* V04 tmp2         [V04    ] (  0,  0   )     int  ->  zero-ref    V05._length(offs=0x08) P-INDEP "field V00._length (fldOffset=0x8)"
;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    "Promoted implicit byref"
;  V06 tmp4         [V06,T02] (  2,  4   )     ref  ->  rdx         single-def "argument with side effect"
;
; Lcl frame size = 40

G_M61794_IG01:
       push     rdi
       push     rsi
       sub      rsp, 40
       mov      rsi, rcx
       mov      rdi, rdx
						;; size=12 bbWeight=1 PerfScore 2.75
G_M61794_IG02:
       call     [System.Globalization.DateTimeFormatInfo:get_CurrentInfo():System.Globalization.DateTimeFormatInfo]
       mov      rdx, rax
       mov      rcx, rsi
       mov      r9, rdi
       xor      r8d, r8d
						;; size=18 bbWeight=1 PerfScore 4.00
G_M61794_IG03:
       add      rsp, 40
       pop      rsi
       pop      rdi
       tail.jmp [System.DateTimeParse:TryParse(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,int,byref):bool]
						;; size=12 bbWeight=1 PerfScore 3.25

Changed text

Open file

; Assembly listing for method System.DateTime:TryParse(System.ReadOnlySpan`1[ushort],byref):bool
; Emitting BLENDED_CODE for X64 CPU with AVX - Windows
; optimized code
; rsp based frame
; partially interruptible
; No PGO data
; 0 inlinees with PGO data; 1 single block inlinees; 1 inlinees without PGO data
; Final local variable assignments
;
;  V00 arg0         [V00,T00] (  4,  8   )   byref  ->  rcx         single-def
;  V01 arg1         [V01,T01] (  4,  3   )   byref  ->  rsi         single-def
;  V02 OutArgs      [V02    ] (  1,  1   )  lclBlk (32) [rsp+00H]   "OutgoingArgSpace"
;  V03 tmp1         [V03,T05] (  3,  2   )    bool  ->  rax         "Inline return value spill temp"
;  V04 tmp2         [V04    ] (  9,  8.50)  struct (128) [rsp+30H]   do-not-enreg[XSF] must-init addr-exposed ld-addr-op "Inline ldloca(s) first use temp"
;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg"
;  V06 tmp4         [V06,T02] (  2,  4   )     ref  ->  rdx         class-hnd single-def "Inlining Arg"
;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    "folding static ro fld struct"
;* V08 tmp6         [V08    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg"
;* V09 tmp7         [V09    ] (  0,  0   )   byref  ->  zero-ref    V16._reference(offs=0x00) P-INDEP "field V00._reference (fldOffset=0x0)"
;* V10 tmp8         [V10    ] (  0,  0   )     int  ->  zero-ref    V16._length(offs=0x08) P-INDEP "field V00._length (fldOffset=0x8)"
;  V11 tmp9         [V11,T03] (  3,  3   )   byref  ->  rdi         single-def V05._reference(offs=0x00) P-INDEP "field V05._reference (fldOffset=0x0)"
;  V12 tmp10        [V12,T04] (  3,  3   )     int  ->  rbx         V05._length(offs=0x08) P-INDEP "field V05._length (fldOffset=0x8)"
;* V13 tmp11        [V13,T06] (  0,  0   )    long  ->  zero-ref    V07._dateData(offs=0x00) P-INDEP "field V07._dateData (fldOffset=0x0)"
;* V14 tmp12        [V14    ] (  0,  0   )   byref  ->  zero-ref    V08._reference(offs=0x00) P-INDEP "field V08._reference (fldOffset=0x0)"
;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    V08._length(offs=0x08) P-INDEP "field V08._length (fldOffset=0x8)"
;* V16 tmp14        [V16    ] (  0,  0   )  struct (16) zero-ref    "Promoted implicit byref"
;  V17 tmp15        [V17    ] (  3,  6   )  struct (16) [rsp+20H]   do-not-enreg[XSF] must-init addr-exposed "by-value struct argument"
;
; Lcl frame size = 176

G_M61794_IG01:
       push     rdi
       push     rsi
       push     rbx
       sub      rsp, 176
       vxorps   xmm4, xmm4
       mov      rax, -144
       vmovdqa  xmmword ptr [rsp+rax+B0H], xmm4
       vmovdqa  xmmword ptr [rsp+rax+C0H], xmm4
       vmovdqa  xmmword ptr [rsp+rax+D0H], xmm4
       add      rax, 48
       jne      SHORT  -5 instr
       mov      rsi, rdx
						;; size=60 bbWeight=1 PerfScore 11.33
G_M61794_IG02:
       mov      rdi, bword ptr [rcx]
       mov      ebx, dword ptr [rcx+08H]
       call     [System.Globalization.DateTimeFormatInfo:get_CurrentInfo():System.Globalization.DateTimeFormatInfo]
       mov      rdx, rax
       mov      bword ptr [rsp+90H], rdi
       mov      dword ptr [rsp+98H], ebx
       mov      dword ptr [rsp+58H], -1
       mov      dword ptr [rsp+5CH], -1
       mov      dword ptr [rsp+60H], -1
       mov      rcx, 0xD1FFAB1E
       mov      qword ptr [rsp+50H], rcx
       mov      dword ptr [rsp+70H], -1
       mov      bword ptr [rsp+20H], rdi
       mov      dword ptr [rsp+28H], ebx
       lea      rcx, [rsp+20H]
       lea      r9, [rsp+30H]
       xor      r8d, r8d
       call     [System.DateTimeParse:TryParse(System.ReadOnlySpan`1[ushort],System.Globalization.DateTimeFormatInfo,int,byref):bool]
       test     eax, eax
       je       SHORT G_M61794_IG04
						;; size=109 bbWeight=1 PerfScore 22.00
G_M61794_IG03:
       mov      rax, qword ptr [rsp+88H]
       mov      qword ptr [rsi], rax
       mov      eax, 1
       jmp      SHORT G_M61794_IG05
						;; size=18 bbWeight=0.50 PerfScore 2.12
G_M61794_IG04:
       xor      eax, eax
       mov      qword ptr [rsi], rax
						;; size=5 bbWeight=0.50 PerfScore 0.62
G_M61794_IG05:
       add      rsp, 176
       pop      rbx
       pop      rsi
       pop      rdi
       ret      
						;; size=11 bbWeight=1 PerfScore 2.75