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; Assembly listing for method System.Text.EncodingTable:GetEncodings():System.Text.EncodingInfo[] (FullOpts)

; Emitting BLENDED_CODE for X64 with AVX512 - Unix

; FullOpts code

; optimized code

; rbp based frame

; fully interruptible

; No PGO data

; 0 inlinees with PGO data; 6 single block inlinees; 2 inlinees without PGO data

; 0 inlinees with PGO data; 8 single block inlinees; 4 inlinees without PGO data

; Final local variable assignments

;

;* V00 loc0 [V00 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op <System.ReadOnlySpan`1[ushort]>

; V01 loc1 [V01,T09] ( 4, 5.21) ref -> r14 class-hnd exact single-def <System.Text.EncodingInfo[]>

; V01 loc1 [V01,T11] ( 4, 5.21) ref -> r14 class-hnd exact single-def <System.Text.EncodingInfo[]>

;* V02 loc2 [V02,T21] ( 0, 0 ) ref -> zero-ref class-hnd exact single-def <System.String>

;* V02 loc2 [V02,T24] ( 0, 0 ) ref -> zero-ref class-hnd exact single-def <System.String>

;* V03 loc3 [V03 ] ( 0, 0 ) struct (16) zero-ref ld-addr-op <System.ReadOnlySpan`1[int]>

; V04 loc4 [V04,T12] ( 3, 4.21) int -> [rbp-0x2C]

; V04 loc4 [V04,T14] ( 3, 4.21) int -> [rbp-0x2C]

;* V05 loc5 [V05,T22] ( 0, 0 ) int -> zero-ref

;* V05 loc5 [V05,T25] ( 0, 0 ) int -> zero-ref

; V06 loc6 [V06,T03] ( 4, 11.88) int -> [rbp-0x30] spill-single-def

; V06 loc6 [V06,T06] ( 4, 11.88) int -> [rbp-0x30] spill-single-def

; V07 loc7 [V07,T07] ( 3, 5.94) int -> rsi

; V07 loc7 [V07,T07] ( 5, 8.42) int -> [rbp-0x34] spill-single-def

;# V08 OutArgs [V08 ] ( 1, 1 ) struct ( 0) [rsp+0x00] do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>

; V09 tmp1 [V09,T16] ( 3, 1.25) int -> rsi

; V09 tmp1 [V09,T19] ( 3, 1.25) int -> rsi

;* V10 tmp2 [V10 ] ( 0, 0 ) ref -> zero-ref class-hnd exact "NewArr temp" <System.Text.EncodingInfo[]>

; V11 tmp3 [V11,T02] ( 4, 15.84) int -> r12 "impSpillLclRefs"

; V11 tmp3 [V11,T05] ( 4, 15.84) int -> r12 "impSpillLclRefs"

; V12 tmp4 [V12,T04] ( 2, 7.92) ref -> [rbp-0x40] class-hnd exact spill-single-def "non-inline candidate call" <System.String>

; V12 tmp4 [V12,T03] ( 4, 15.84) ref -> [rbp-0x50] class-hnd exact "non-inline candidate call" <System.String>

; V13 tmp5 [V13,T01] ( 5, 19.80) ref -> [rbp-0x48] class-hnd exact spill-single-def "NewObj constructor temp" <System.Text.EncodingInfo>

; V13 tmp5 [V13,T02] ( 5, 19.80) ref -> [rbp-0x58] class-hnd exact spill-single-def "NewObj constructor temp" <System.Text.EncodingInfo>

;* V14 tmp6 [V14 ] ( 0, 0 ) struct (16) zero-ref "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[ushort]>

; V15 tmp7 [V15,T17] ( 2, 1 ) ubyte -> rax "Inline return value spill temp"

; V15 tmp7 [V15,T20] ( 2, 1 ) ubyte -> rax "Inline return value spill temp"

;* V16 tmp8 [V16 ] ( 0, 0 ) struct (16) zero-ref "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[int]>

; V17 tmp9 [V17,T13] ( 2, 3.96) ubyte -> rax "Inline return value spill temp"

; V17 tmp9 [V17,T15] ( 2, 3.96) ubyte -> rax "Inline return value spill temp"

; V18 tmp10 [V18,T05] ( 2, 7.92) ref -> [rbp-0x50] class-hnd exact spill-single-def "Inlining Arg" <System.String>

; V18 tmp10 [V18,T00] ( 7, 24.76) int -> r8 "Inlining Arg"

; V19 tmp11 [V19,T10] ( 2, 4.96) byref -> rbx single-def "field V00._reference (fldOffset=0x0)" P-INDEP

;* V19 tmp11 [V19 ] ( 0, 0 ) int -> zero-ref "Inlining Arg"

;* V20 tmp12 [V20,T18] ( 0, 0 ) int -> zero-ref "field V00._length (fldOffset=0x8)" P-INDEP

; V20 tmp12 [V20,T16] ( 2, 3.96) long -> [rbp-0x40] spill-single-def "Inline stloc first use temp"

; V21 tmp13 [V21,T11] ( 3, 4.21) byref -> r13 single-def "field V03._reference (fldOffset=0x0)" P-INDEP

; V21 tmp13 [V21,T04] ( 4, 15.84) ref -> [rbp-0x60] class-hnd exact spill-single-def "dup spill" <System.String>

;* V22 tmp14 [V22,T23] ( 0, 0 ) int -> zero-ref "field V03._length (fldOffset=0x8)" P-INDEP

;* V22 tmp14 [V22 ] ( 0, 0 ) byref -> zero-ref "Inlining Arg"

; V23 tmp15 [V23,T15] ( 2, 2 ) byref -> rbx single-def "field V14._reference (fldOffset=0x0)" P-INDEP

;* V23 tmp15 [V23 ] ( 0, 0 ) byref -> zero-ref "Inlining Arg"

;* V24 tmp16 [V24,T19] ( 0, 0 ) int -> zero-ref "field V14._length (fldOffset=0x8)" P-INDEP

; V24 tmp16 [V24,T08] ( 2, 7.92) ref -> [rbp-0x68] class-hnd exact spill-single-def "Inlining Arg" <System.String>

; V25 tmp17 [V25,T20] ( 2, 0.50) byref -> r13 single-def "field V16._reference (fldOffset=0x0)" P-INDEP

; V25 tmp17 [V25,T12] ( 2, 4.96) byref -> rbx single-def "field V00._reference (fldOffset=0x0)" P-INDEP

;* V26 tmp18 [V26,T24] ( 0, 0 ) int -> zero-ref "field V16._length (fldOffset=0x8)" P-INDEP

;* V26 tmp18 [V26,T21] ( 0, 0 ) int -> zero-ref "field V00._length (fldOffset=0x8)" P-INDEP

; V27 cse0 [V27,T08] ( 3, 5.94) int -> rdi "CSE #03: moderate"

; V27 tmp19 [V27,T13] ( 3, 4.21) byref -> r13 single-def "field V03._reference (fldOffset=0x0)" P-INDEP

; V28 cse1 [V28,T14] ( 3, 2.50) int -> rdi "CSE #02: moderate"

;* V28 tmp20 [V28,T26] ( 0, 0 ) int -> zero-ref "field V03._length (fldOffset=0x8)" P-INDEP

; V29 cse2 [V29,T06] ( 5, 6.46) byref -> r15 "CSE #01: moderate"

; V29 tmp21 [V29,T18] ( 2, 2 ) byref -> rbx single-def "field V14._reference (fldOffset=0x0)" P-INDEP

; V30 rat0 [V30,T00] ( 7, 20.05) long -> [rbp-0x38] "Widened IV V05"

;* V30 tmp22 [V30,T22] ( 0, 0 ) int -> zero-ref "field V14._length (fldOffset=0x8)" P-INDEP

; V31 tmp23 [V31,T23] ( 2, 0.50) byref -> r13 single-def "field V16._reference (fldOffset=0x0)" P-INDEP

;* V32 tmp24 [V32,T27] ( 0, 0 ) int -> zero-ref "field V16._length (fldOffset=0x8)" P-INDEP

; V33 cse0 [V33,T10] ( 3, 5.94) int -> rdi "CSE #03: moderate"

; V34 cse1 [V34,T17] ( 3, 2.50) int -> rdi "CSE #02: moderate"

; V35 cse2 [V35,T09] ( 5, 6.46) byref -> r15 "CSE #01: moderate"

; V36 rat0 [V36,T01] ( 7, 20.05) long -> [rbp-0x48] "Widened IV V05"

;

; Lcl frame size = 40

; Lcl frame size = 72

G_M46987_IG01:

push rbp

push r15

push r14

push r13

push r12

push rbx

sub rsp, 40

sub rsp, 72

lea rbp, [rsp+0x50]

lea rbp, [rsp+0x70]

;; size=19 bbWeight=1 PerfScore 6.75

G_M46987_IG02:

mov rbx, 0xD1FFAB1E ; static handle

mov r15, 0xD1FFAB1E ; static handle

mov edi, dword ptr [r15]

test edi, edi

jl SHORT G_M46987_IG05

;; size=27 bbWeight=1 PerfScore 3.75

G_M46987_IG03:

test edi, edi

jg SHORT G_M46987_IG04

mov rdi, 0xD1FFAB1E ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'

mov rsi, r15

mov rax, 0xD1FFAB1E ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte

call [rax]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte

test eax, eax

je SHORT G_M46987_IG05

;; size=33 bbWeight=0.50 PerfScore 3.12

G_M46987_IG04:

mov esi, 8

jmp SHORT G_M46987_IG06

;; size=7 bbWeight=0.50 PerfScore 1.12

G_M46987_IG05:

mov esi, 7

;; size=5 bbWeight=0.50 PerfScore 0.12

G_M46987_IG06:

movsxd rsi, esi

mov rdi, 0xD1FFAB1E ; System.Text.EncodingInfo[]

call CORINFO_HELP_NEWARR_1_OBJ

mov r14, rax

mov r13, 0xD1FFAB1E ; static handle

xor r12d, r12d

xor eax, eax

;; size=36 bbWeight=0.25 PerfScore 0.62

G_M46987_IG07:

mov qword ptr [rbp-0x38], rax

mov qword ptr [rbp-0x48], rax

movzx rcx, word ptr [rbx+2*rax]

mov dword ptr [rbp-0x30], ecx

cmp ecx, 0xFDE8

jne SHORT G_M46987_IG09

;; size=19 bbWeight=3.96 PerfScore 20.79

G_M46987_IG08:

mov edi, dword ptr [r15]

test edi, edi

jl G_M46987_IG10

jl G_M46987_IG13

test edi, edi

jg SHORT G_M46987_IG09

mov rdi, 0xD1FFAB1E ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'

mov rsi, r15

mov rdx, 0xD1FFAB1E ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte

call [rdx]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte

test eax, eax

je G_M46987_IG10

je G_M46987_IG13

;; size=48 bbWeight=1.98 PerfScore 18.81

G_M46987_IG09:

lea edx, [r12+0x01]

lea edi, [r12+0x01]

mov dword ptr [rbp-0x2C], edx

mov dword ptr [rbp-0x2C], edi

mov rax, qword ptr [rbp-0x38]

mov rax, qword ptr [rbp-0x48]

mov esi, dword ptr [r13+4*rax]

mov qword ptr [rbp-0x38], rax

mov dword ptr [rbp-0x34], esi

lea edx, [rax+0x01]

mov qword ptr [rbp-0x48], rax

mov edx, dword ptr [r13+4*rdx]

lea edi, [rax+0x01]

sub edx, esi

mov edi, dword ptr [r13+4*rdi]

sub edi, esi

mov r8d, edi

mov edi, esi

mov r9d, r8d

add rdi, r9

cmp rdi, 56

ja G_M46987_IG16

test r8d, r8d

je SHORT G_M46987_IG11

cmp r8d, 56

je SHORT G_M46987_IG10

mov r9d, r8d

mov qword ptr [rbp-0x40], r9

mov edi, r8d

call System.String:FastAllocateString(int):System.String

mov gword ptr [rbp-0x60], rax

mov rsi, 0xD1FFAB1E

mov edi, dword ptr [rbp-0x34]

lea rsi, bword ptr [rsi+2*rdi]

cmp byte ptr [rax], al

lea rdi, bword ptr [rax+0x0C]

mov rdx, qword ptr [rbp-0x40]

add rdx, rdx

mov rcx, 0xD1FFAB1E ; code for System.SpanHelpers:Memmove(byref,byref,ulong)

call [rcx]System.SpanHelpers:Memmove(byref,byref,ulong)

mov rax, gword ptr [rbp-0x60]

mov gword ptr [rbp-0x50], rax

jmp SHORT G_M46987_IG12

;; size=137 bbWeight=1.98 PerfScore 61.87

G_M46987_IG10:

mov rdi, 0xD1FFAB1E ; 'utf-16utf-16BEutf-32utf-32BEus-asciiiso-8859-1utf-7utf-8'

mov r9, 0xD1FFAB1E ; code for System.String:Substring(int,int):System.String:this

mov rsi, rdi

call [r9]System.String:Substring(int,int):System.String:this

mov gword ptr [rbp-0x50], rsi

mov gword ptr [rbp-0x40], rax

jmp SHORT G_M46987_IG12

;; size=19 bbWeight=1.98 PerfScore 6.93

G_M46987_IG11:

mov rsi, 0xD1FFAB1E ; ''

mov gword ptr [rbp-0x50], rsi

;; size=14 bbWeight=1.98 PerfScore 2.48

G_M46987_IG12:

mov rdi, 0xD1FFAB1E ; System.Text.EncodingInfo

call CORINFO_HELP_NEWSFAST

mov gword ptr [rbp-0x48], rax

mov gword ptr [rbp-0x58], rax

mov edi, dword ptr [rbp-0x30]

mov rcx, 0xD1FFAB1E ; code for System.Text.EncodingTable:GetDisplayName(int):System.String

call [rcx]System.Text.EncodingTable:GetDisplayName(int):System.String

mov gword ptr [rbp-0x50], rax

mov gword ptr [rbp-0x68], rax

mov rcx, gword ptr [rbp-0x48]

mov rcx, gword ptr [rbp-0x58]

mov edi, dword ptr [rbp-0x30]

mov dword ptr [rcx+0x20], edi

lea rdi, bword ptr [rcx+0x08]

mov rsi, gword ptr [rbp-0x40]

mov rsi, gword ptr [rbp-0x50]

call CORINFO_HELP_ASSIGN_REF

mov rax, gword ptr [rbp-0x48]

mov rax, gword ptr [rbp-0x58]

lea rdi, bword ptr [rax+0x10]

mov rsi, gword ptr [rbp-0x50]

mov rsi, gword ptr [rbp-0x68]

call CORINFO_HELP_ASSIGN_REF

cmp r12d, dword ptr [r14+0x08]

jae SHORT G_M46987_IG13

jae SHORT G_M46987_IG17

mov edi, r12d

lea rdi, bword ptr [r14+8*rdi+0x10]

mov rsi, gword ptr [rbp-0x48]

mov rsi, gword ptr [rbp-0x58]

call CORINFO_HELP_ASSIGN_REF

mov r12d, dword ptr [rbp-0x2C]

;; size=163 bbWeight=1.98 PerfScore 74.25

;; size=105 bbWeight=1.98 PerfScore 49.00

G_M46987_IG10:

G_M46987_IG13:

mov rax, qword ptr [rbp-0x38]

mov rax, qword ptr [rbp-0x48]

inc eax

cmp eax, 8

jl G_M46987_IG07

;; size=15 bbWeight=3.96 PerfScore 9.90

G_M46987_IG11:

G_M46987_IG14:

mov rax, r14

;; size=3 bbWeight=1 PerfScore 0.25

G_M46987_IG12:

G_M46987_IG15:

add rsp, 40

add rsp, 72

pop rbx

pop r12

pop r13

pop r14

pop r15

pop rbp

ret

;; size=15 bbWeight=1 PerfScore 4.25

G_M46987_IG13:

G_M46987_IG16:

mov rdi, 0xD1FFAB1E ; 'utf-16utf-16BEutf-32utf-32BEus-asciiiso-8859-1utf-7utf-8'

mov esi, dword ptr [rbp-0x34]

mov edx, r8d

mov rax, 0xD1FFAB1E ; code for System.String:ThrowSubstringArgumentOutOfRange(int,int):this

call [rax]System.String:ThrowSubstringArgumentOutOfRange(int,int):this

int3

;; size=29 bbWeight=0.50 PerfScore 2.50

G_M46987_IG17:

call CORINFO_HELP_RNGCHKFAIL

int3

;; size=6 bbWeight=0 PerfScore 0.00

; Total bytes of code 396, prolog size 19, PerfScore 143.75, instruction count 98, allocated bytes for code 396 (MethodHash=f2cf4874) for method System.Text.EncodingTable:GetEncodings():System.Text.EncodingInfo[] (FullOpts)

; Total bytes of code 537, prolog size 19, PerfScore 192.28, instruction count 134, allocated bytes for code 537 (MethodHash=f2cf4874) for method System.Text.EncodingTable:GetEncodings():System.Text.EncodingInfo[] (FullOpts)

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

Saved diffs

Original text

Open file

; Assembly listing for method System.Text.EncodingTable:GetEncodings():System.Text.EncodingInfo[] (FullOpts)
; Emitting BLENDED_CODE for X64 with AVX512 - Unix
; FullOpts code
; optimized code
; rbp based frame
; fully interruptible
; No PGO data
; 0 inlinees with PGO data; 6 single block inlinees; 2 inlinees without PGO data
; Final local variable assignments
;
;* V00 loc0         [V00    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[ushort]>
;  V01 loc1         [V01,T09] (  4,  5.21)     ref  ->  r14         class-hnd exact single-def <System.Text.EncodingInfo[]>
;* V02 loc2         [V02,T21] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def <System.String>
;* V03 loc3         [V03    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[int]>
;  V04 loc4         [V04,T12] (  3,  4.21)     int  ->  [rbp-0x2C] 
;* V05 loc5         [V05,T22] (  0,  0   )     int  ->  zero-ref   
;  V06 loc6         [V06,T03] (  4, 11.88)     int  ->  [rbp-0x30]  spill-single-def
;  V07 loc7         [V07,T07] (  3,  5.94)     int  ->  rsi        
;# V08 OutArgs      [V08    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
;  V09 tmp1         [V09,T16] (  3,  1.25)     int  ->  rsi        
;* V10 tmp2         [V10    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewArr temp" <System.Text.EncodingInfo[]>
;  V11 tmp3         [V11,T02] (  4, 15.84)     int  ->  r12         "impSpillLclRefs"
;  V12 tmp4         [V12,T04] (  2,  7.92)     ref  ->  [rbp-0x40]  class-hnd exact spill-single-def "non-inline candidate call" <System.String>
;  V13 tmp5         [V13,T01] (  5, 19.80)     ref  ->  [rbp-0x48]  class-hnd exact spill-single-def "NewObj constructor temp" <System.Text.EncodingInfo>
;* V14 tmp6         [V14    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[ushort]>
;  V15 tmp7         [V15,T17] (  2,  1   )   ubyte  ->  rax         "Inline return value spill temp"
;* V16 tmp8         [V16    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[int]>
;  V17 tmp9         [V17,T13] (  2,  3.96)   ubyte  ->  rax         "Inline return value spill temp"
;  V18 tmp10        [V18,T05] (  2,  7.92)     ref  ->  [rbp-0x50]  class-hnd exact spill-single-def "Inlining Arg" <System.String>
;  V19 tmp11        [V19,T10] (  2,  4.96)   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
;* V20 tmp12        [V20,T18] (  0,  0   )     int  ->  zero-ref    "field V00._length (fldOffset=0x8)" P-INDEP
;  V21 tmp13        [V21,T11] (  3,  4.21)   byref  ->  r13         single-def "field V03._reference (fldOffset=0x0)" P-INDEP
;* V22 tmp14        [V22,T23] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
;  V23 tmp15        [V23,T15] (  2,  2   )   byref  ->  rbx         single-def "field V14._reference (fldOffset=0x0)" P-INDEP
;* V24 tmp16        [V24,T19] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
;  V25 tmp17        [V25,T20] (  2,  0.50)   byref  ->  r13         single-def "field V16._reference (fldOffset=0x0)" P-INDEP
;* V26 tmp18        [V26,T24] (  0,  0   )     int  ->  zero-ref    "field V16._length (fldOffset=0x8)" P-INDEP
;  V27 cse0         [V27,T08] (  3,  5.94)     int  ->  rdi         "CSE #03: moderate"
;  V28 cse1         [V28,T14] (  3,  2.50)     int  ->  rdi         "CSE #02: moderate"
;  V29 cse2         [V29,T06] (  5,  6.46)   byref  ->  r15         "CSE #01: moderate"
;  V30 rat0         [V30,T00] (  7, 20.05)    long  ->  [rbp-0x38]  "Widened IV V05"
;
; Lcl frame size = 40

G_M46987_IG01:
       push     rbp
       push     r15
       push     r14
       push     r13
       push     r12
       push     rbx
       sub      rsp, 40
       lea      rbp, [rsp+0x50]
						;; size=19 bbWeight=1 PerfScore 6.75
G_M46987_IG02:
       mov      rbx, 0xD1FFAB1E      ; static handle
       mov      r15, 0xD1FFAB1E      ; static handle
       mov      edi, dword ptr [r15]
       test     edi, edi
       jl       SHORT G_M46987_IG05
						;; size=27 bbWeight=1 PerfScore 3.75
G_M46987_IG03:
       test     edi, edi
       jg       SHORT G_M46987_IG04
       mov      rdi, 0xD1FFAB1E      ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'
       mov      rsi, r15
       mov      rax, 0xD1FFAB1E      ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       call     [rax]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       test     eax, eax
       je       SHORT G_M46987_IG05
						;; size=33 bbWeight=0.50 PerfScore 3.12
G_M46987_IG04:
       mov      esi, 8
       jmp      SHORT G_M46987_IG06
						;; size=7 bbWeight=0.50 PerfScore 1.12
G_M46987_IG05:
       mov      esi, 7
						;; size=5 bbWeight=0.50 PerfScore 0.12
G_M46987_IG06:
       movsxd   rsi, esi
       mov      rdi, 0xD1FFAB1E      ; System.Text.EncodingInfo[]
       call     CORINFO_HELP_NEWARR_1_OBJ
       mov      r14, rax
       mov      r13, 0xD1FFAB1E      ; static handle
       xor      r12d, r12d
       xor      eax, eax
						;; size=36 bbWeight=0.25 PerfScore 0.62
G_M46987_IG07:
       mov      qword ptr [rbp-0x38], rax
       movzx    rcx, word  ptr [rbx+2*rax]
       mov      dword ptr [rbp-0x30], ecx
       cmp      ecx, 0xFDE8
       jne      SHORT G_M46987_IG09
						;; size=19 bbWeight=3.96 PerfScore 20.79
G_M46987_IG08:
       mov      edi, dword ptr [r15]
       test     edi, edi
       jl       G_M46987_IG10
       test     edi, edi
       jg       SHORT G_M46987_IG09
       mov      rdi, 0xD1FFAB1E      ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'
       mov      rsi, r15
       mov      rdx, 0xD1FFAB1E      ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       call     [rdx]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       test     eax, eax
       je       G_M46987_IG10
						;; size=48 bbWeight=1.98 PerfScore 18.81
G_M46987_IG09:
       lea      edx, [r12+0x01]
       mov      dword ptr [rbp-0x2C], edx
       mov      rax, qword ptr [rbp-0x38]
       mov      esi, dword ptr [r13+4*rax]
       mov      qword ptr [rbp-0x38], rax
       lea      edx, [rax+0x01]
       mov      edx, dword ptr [r13+4*rdx]
       sub      edx, esi
       mov      rdi, 0xD1FFAB1E      ; 'utf-16utf-16BEutf-32utf-32BEus-asciiiso-8859-1utf-7utf-8'
       mov      r9, 0xD1FFAB1E      ; code for System.String:Substring(int,int):System.String:this
       call     [r9]System.String:Substring(int,int):System.String:this
       mov      gword ptr [rbp-0x40], rax
       mov      rdi, 0xD1FFAB1E      ; System.Text.EncodingInfo
       call     CORINFO_HELP_NEWSFAST
       mov      gword ptr [rbp-0x48], rax
       mov      edi, dword ptr [rbp-0x30]
       mov      rcx, 0xD1FFAB1E      ; code for System.Text.EncodingTable:GetDisplayName(int):System.String
       call     [rcx]System.Text.EncodingTable:GetDisplayName(int):System.String
       mov      gword ptr [rbp-0x50], rax
       mov      rcx, gword ptr [rbp-0x48]
       mov      edi, dword ptr [rbp-0x30]
       mov      dword ptr [rcx+0x20], edi
       lea      rdi, bword ptr [rcx+0x08]
       mov      rsi, gword ptr [rbp-0x40]
       call     CORINFO_HELP_ASSIGN_REF
       mov      rax, gword ptr [rbp-0x48]
       lea      rdi, bword ptr [rax+0x10]
       mov      rsi, gword ptr [rbp-0x50]
       call     CORINFO_HELP_ASSIGN_REF
       cmp      r12d, dword ptr [r14+0x08]
       jae      SHORT G_M46987_IG13
       mov      edi, r12d
       lea      rdi, bword ptr [r14+8*rdi+0x10]
       mov      rsi, gword ptr [rbp-0x48]
       call     CORINFO_HELP_ASSIGN_REF
       mov      r12d, dword ptr [rbp-0x2C]
						;; size=163 bbWeight=1.98 PerfScore 74.25
G_M46987_IG10:
       mov      rax, qword ptr [rbp-0x38]
       inc      eax
       cmp      eax, 8
       jl       G_M46987_IG07
						;; size=15 bbWeight=3.96 PerfScore 9.90
G_M46987_IG11:
       mov      rax, r14
						;; size=3 bbWeight=1 PerfScore 0.25
G_M46987_IG12:
       add      rsp, 40
       pop      rbx
       pop      r12
       pop      r13
       pop      r14
       pop      r15
       pop      rbp
       ret      
						;; size=15 bbWeight=1 PerfScore 4.25
G_M46987_IG13:
       call     CORINFO_HELP_RNGCHKFAIL
       int3     
						;; size=6 bbWeight=0 PerfScore 0.00

Changed text

Open file

; Assembly listing for method System.Text.EncodingTable:GetEncodings():System.Text.EncodingInfo[] (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; 8 single block inlinees; 4 inlinees without PGO data
; Final local variable assignments
;
;* V00 loc0         [V00    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[ushort]>
;  V01 loc1         [V01,T11] (  4,  5.21)     ref  ->  r14         class-hnd exact single-def <System.Text.EncodingInfo[]>
;* V02 loc2         [V02,T24] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def <System.String>
;* V03 loc3         [V03    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op <System.ReadOnlySpan`1[int]>
;  V04 loc4         [V04,T14] (  3,  4.21)     int  ->  [rbp-0x2C] 
;* V05 loc5         [V05,T25] (  0,  0   )     int  ->  zero-ref   
;  V06 loc6         [V06,T06] (  4, 11.88)     int  ->  [rbp-0x30]  spill-single-def
;  V07 loc7         [V07,T07] (  5,  8.42)     int  ->  [rbp-0x34]  spill-single-def
;# V08 OutArgs      [V08    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
;  V09 tmp1         [V09,T19] (  3,  1.25)     int  ->  rsi        
;* V10 tmp2         [V10    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewArr temp" <System.Text.EncodingInfo[]>
;  V11 tmp3         [V11,T05] (  4, 15.84)     int  ->  r12         "impSpillLclRefs"
;  V12 tmp4         [V12,T03] (  4, 15.84)     ref  ->  [rbp-0x50]  class-hnd exact "non-inline candidate call" <System.String>
;  V13 tmp5         [V13,T02] (  5, 19.80)     ref  ->  [rbp-0x58]  class-hnd exact spill-single-def "NewObj constructor temp" <System.Text.EncodingInfo>
;* V14 tmp6         [V14    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[ushort]>
;  V15 tmp7         [V15,T20] (  2,  1   )   ubyte  ->  rax         "Inline return value spill temp"
;* V16 tmp8         [V16    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[int]>
;  V17 tmp9         [V17,T15] (  2,  3.96)   ubyte  ->  rax         "Inline return value spill temp"
;  V18 tmp10        [V18,T00] (  7, 24.76)     int  ->   r8         "Inlining Arg"
;* V19 tmp11        [V19    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
;  V20 tmp12        [V20,T16] (  2,  3.96)    long  ->  [rbp-0x40]  spill-single-def "Inline stloc first use temp"
;  V21 tmp13        [V21,T04] (  4, 15.84)     ref  ->  [rbp-0x60]  class-hnd exact spill-single-def "dup spill" <System.String>
;* V22 tmp14        [V22    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
;* V23 tmp15        [V23    ] (  0,  0   )   byref  ->  zero-ref    "Inlining Arg"
;  V24 tmp16        [V24,T08] (  2,  7.92)     ref  ->  [rbp-0x68]  class-hnd exact spill-single-def "Inlining Arg" <System.String>
;  V25 tmp17        [V25,T12] (  2,  4.96)   byref  ->  rbx         single-def "field V00._reference (fldOffset=0x0)" P-INDEP
;* V26 tmp18        [V26,T21] (  0,  0   )     int  ->  zero-ref    "field V00._length (fldOffset=0x8)" P-INDEP
;  V27 tmp19        [V27,T13] (  3,  4.21)   byref  ->  r13         single-def "field V03._reference (fldOffset=0x0)" P-INDEP
;* V28 tmp20        [V28,T26] (  0,  0   )     int  ->  zero-ref    "field V03._length (fldOffset=0x8)" P-INDEP
;  V29 tmp21        [V29,T18] (  2,  2   )   byref  ->  rbx         single-def "field V14._reference (fldOffset=0x0)" P-INDEP
;* V30 tmp22        [V30,T22] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
;  V31 tmp23        [V31,T23] (  2,  0.50)   byref  ->  r13         single-def "field V16._reference (fldOffset=0x0)" P-INDEP
;* V32 tmp24        [V32,T27] (  0,  0   )     int  ->  zero-ref    "field V16._length (fldOffset=0x8)" P-INDEP
;  V33 cse0         [V33,T10] (  3,  5.94)     int  ->  rdi         "CSE #03: moderate"
;  V34 cse1         [V34,T17] (  3,  2.50)     int  ->  rdi         "CSE #02: moderate"
;  V35 cse2         [V35,T09] (  5,  6.46)   byref  ->  r15         "CSE #01: moderate"
;  V36 rat0         [V36,T01] (  7, 20.05)    long  ->  [rbp-0x48]  "Widened IV V05"
;
; Lcl frame size = 72

G_M46987_IG01:
       push     rbp
       push     r15
       push     r14
       push     r13
       push     r12
       push     rbx
       sub      rsp, 72
       lea      rbp, [rsp+0x70]
						;; size=19 bbWeight=1 PerfScore 6.75
G_M46987_IG02:
       mov      rbx, 0xD1FFAB1E      ; static handle
       mov      r15, 0xD1FFAB1E      ; static handle
       mov      edi, dword ptr [r15]
       test     edi, edi
       jl       SHORT G_M46987_IG05
						;; size=27 bbWeight=1 PerfScore 3.75
G_M46987_IG03:
       test     edi, edi
       jg       SHORT G_M46987_IG04
       mov      rdi, 0xD1FFAB1E      ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'
       mov      rsi, r15
       mov      rax, 0xD1FFAB1E      ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       call     [rax]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       test     eax, eax
       je       SHORT G_M46987_IG05
						;; size=33 bbWeight=0.50 PerfScore 3.12
G_M46987_IG04:
       mov      esi, 8
       jmp      SHORT G_M46987_IG06
						;; size=7 bbWeight=0.50 PerfScore 1.12
G_M46987_IG05:
       mov      esi, 7
						;; size=5 bbWeight=0.50 PerfScore 0.12
G_M46987_IG06:
       movsxd   rsi, esi
       mov      rdi, 0xD1FFAB1E      ; System.Text.EncodingInfo[]
       call     CORINFO_HELP_NEWARR_1_OBJ
       mov      r14, rax
       mov      r13, 0xD1FFAB1E      ; static handle
       xor      r12d, r12d
       xor      eax, eax
						;; size=36 bbWeight=0.25 PerfScore 0.62
G_M46987_IG07:
       mov      qword ptr [rbp-0x48], rax
       movzx    rcx, word  ptr [rbx+2*rax]
       mov      dword ptr [rbp-0x30], ecx
       cmp      ecx, 0xFDE8
       jne      SHORT G_M46987_IG09
						;; size=19 bbWeight=3.96 PerfScore 20.79
G_M46987_IG08:
       mov      edi, dword ptr [r15]
       test     edi, edi
       jl       G_M46987_IG13
       test     edi, edi
       jg       SHORT G_M46987_IG09
       mov      rdi, 0xD1FFAB1E      ; 'System.Text.Encoding.EnableUnsafeUTF7Encoding'
       mov      rsi, r15
       mov      rdx, 0xD1FFAB1E      ; code for System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       call     [rdx]System.LocalAppContextSwitches:GetCachedSwitchValueInternal(System.String,byref):ubyte
       test     eax, eax
       je       G_M46987_IG13
						;; size=48 bbWeight=1.98 PerfScore 18.81
G_M46987_IG09:
       lea      edi, [r12+0x01]
       mov      dword ptr [rbp-0x2C], edi
       mov      rax, qword ptr [rbp-0x48]
       mov      esi, dword ptr [r13+4*rax]
       mov      dword ptr [rbp-0x34], esi
       mov      qword ptr [rbp-0x48], rax
       lea      edi, [rax+0x01]
       mov      edi, dword ptr [r13+4*rdi]
       sub      edi, esi
       mov      r8d, edi
       mov      edi, esi
       mov      r9d, r8d
       add      rdi, r9
       cmp      rdi, 56
       ja       G_M46987_IG16
       test     r8d, r8d
       je       SHORT G_M46987_IG11
       cmp      r8d, 56
       je       SHORT G_M46987_IG10
       mov      r9d, r8d
       mov      qword ptr [rbp-0x40], r9
       mov      edi, r8d
       call     System.String:FastAllocateString(int):System.String
       mov      gword ptr [rbp-0x60], rax
       mov      rsi, 0xD1FFAB1E
       mov      edi, dword ptr [rbp-0x34]
       lea      rsi, bword ptr [rsi+2*rdi]
       cmp      byte  ptr [rax], al
       lea      rdi, bword ptr [rax+0x0C]
       mov      rdx, qword ptr [rbp-0x40]
       add      rdx, rdx
       mov      rcx, 0xD1FFAB1E      ; code for System.SpanHelpers:Memmove(byref,byref,ulong)
       call     [rcx]System.SpanHelpers:Memmove(byref,byref,ulong)
       mov      rax, gword ptr [rbp-0x60]
       mov      gword ptr [rbp-0x50], rax
       jmp      SHORT G_M46987_IG12
						;; size=137 bbWeight=1.98 PerfScore 61.87
G_M46987_IG10:
       mov      rdi, 0xD1FFAB1E      ; 'utf-16utf-16BEutf-32utf-32BEus-asciiiso-8859-1utf-7utf-8'
       mov      rsi, rdi
       mov      gword ptr [rbp-0x50], rsi
       jmp      SHORT G_M46987_IG12
						;; size=19 bbWeight=1.98 PerfScore 6.93
G_M46987_IG11:
       mov      rsi, 0xD1FFAB1E      ; ''
       mov      gword ptr [rbp-0x50], rsi
						;; size=14 bbWeight=1.98 PerfScore 2.48
G_M46987_IG12:
       mov      rdi, 0xD1FFAB1E      ; System.Text.EncodingInfo
       call     CORINFO_HELP_NEWSFAST
       mov      gword ptr [rbp-0x58], rax
       mov      edi, dword ptr [rbp-0x30]
       mov      rcx, 0xD1FFAB1E      ; code for System.Text.EncodingTable:GetDisplayName(int):System.String
       call     [rcx]System.Text.EncodingTable:GetDisplayName(int):System.String
       mov      gword ptr [rbp-0x68], rax
       mov      rcx, gword ptr [rbp-0x58]
       mov      edi, dword ptr [rbp-0x30]
       mov      dword ptr [rcx+0x20], edi
       lea      rdi, bword ptr [rcx+0x08]
       mov      rsi, gword ptr [rbp-0x50]
       call     CORINFO_HELP_ASSIGN_REF
       mov      rax, gword ptr [rbp-0x58]
       lea      rdi, bword ptr [rax+0x10]
       mov      rsi, gword ptr [rbp-0x68]
       call     CORINFO_HELP_ASSIGN_REF
       cmp      r12d, dword ptr [r14+0x08]
       jae      SHORT G_M46987_IG17
       mov      edi, r12d
       lea      rdi, bword ptr [r14+8*rdi+0x10]
       mov      rsi, gword ptr [rbp-0x58]
       call     CORINFO_HELP_ASSIGN_REF
       mov      r12d, dword ptr [rbp-0x2C]
						;; size=105 bbWeight=1.98 PerfScore 49.00
G_M46987_IG13:
       mov      rax, qword ptr [rbp-0x48]
       inc      eax
       cmp      eax, 8
       jl       G_M46987_IG07
						;; size=15 bbWeight=3.96 PerfScore 9.90
G_M46987_IG14:
       mov      rax, r14
						;; size=3 bbWeight=1 PerfScore 0.25
G_M46987_IG15:
       add      rsp, 72
       pop      rbx
       pop      r12
       pop      r13
       pop      r14
       pop      r15
       pop      rbp
       ret      
						;; size=15 bbWeight=1 PerfScore 4.25
G_M46987_IG16:
       mov      rdi, 0xD1FFAB1E      ; 'utf-16utf-16BEutf-32utf-32BEus-asciiiso-8859-1utf-7utf-8'
       mov      esi, dword ptr [rbp-0x34]
       mov      edx, r8d
       mov      rax, 0xD1FFAB1E      ; code for System.String:ThrowSubstringArgumentOutOfRange(int,int):this
       call     [rax]System.String:ThrowSubstringArgumentOutOfRange(int,int):this
       int3     
						;; size=29 bbWeight=0.50 PerfScore 2.50
G_M46987_IG17:
       call     CORINFO_HELP_RNGCHKFAIL
       int3     
						;; size=6 bbWeight=0 PerfScore 0.00

Words removed	100
Total words	958
Words removed (%)	10.44

Words added	345
Total words	1203
Words added (%)	28.68