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; Assembly listing for method System.Linq.Enumerable:OrderDescending[int](System.Collections.Generic.IEnumerable`1[int]):System.Linq.IOrderedEnumerable`1[int]

; Emitting BLENDED_CODE for X64 CPU with AVX - Windows

; optimized code

; rsp based frame

; partially interruptible

; No PGO data

; 0 inlinees with PGO data; 6 single block inlinees; 3 inlinees without PGO data

; 0 inlinees with PGO data; 6 single block inlinees; 4 inlinees without PGO data

; Final local variable assignments

;

; V00 arg0 [V00,T01] ( 6, 4 ) ref -> rsi class-hnd single-def

; V00 arg0 [V00,T01] ( 4, 4 ) ref -> rsi class-hnd single-def

; V01 OutArgs [V01 ] ( 1, 1 ) lclBlk (32) [rsp+00H] "OutgoingArgSpace"

; V02 tmp1 [V02,T04] ( 3, 2 ) ref -> rbx class-hnd "Inline return value spill temp"

; V02 tmp1 [V02,T02] ( 2, 2 ) ref -> rax class-hnd single-def "Inline return value spill temp"

; V03 tmp2 [V03,T02] ( 4, 4 ) ref -> rbx class-hnd exact single-def "NewObj constructor temp"

; V03 tmp2 [V03,T00] ( 4, 8 ) ref -> rdi class-hnd exact single-def "NewObj constructor temp"

;* V04 tmp3 [V04 ] ( 0, 0 ) ref -> zero-ref class-hnd exact "Inline stloc first use temp"

; V05 tmp4 [V05,T03] ( 3, 3 ) ref -> rdi class-hnd single-def "Inlining Arg"

;* V05 tmp4 [V05 ] ( 0, 0 ) bool -> zero-ref "Inline return value spill temp"

; V06 tmp5 [V06,T00] ( 7, 7 ) ref -> rbx class-hnd exact single-def "NewObj constructor temp"

;* V06 tmp5 [V06 ] ( 0, 0 ) ref -> zero-ref class-hnd "Inlining Arg"

;* V07 tmp6 [V07 ] ( 0, 0 ) ref -> zero-ref single-def

;* V07 tmp6 [V07 ] ( 0, 0 ) ref -> zero-ref class-hnd exact "NewObj constructor temp"

;* V08 tmp7 [V08 ] ( 0, 0 ) ref -> zero-ref single-def

;* V08 tmp7 [V08 ] ( 0, 0 ) ref -> zero-ref

;* V09 tmp8 [V09 ] ( 0, 0 ) ref -> zero-ref single-def

;* V09 tmp8 [V09 ] ( 0, 0 ) ref -> zero-ref

; V10 tmp9 [V10,T05] ( 2, 1 ) ref -> rdx single-def

;* V10 tmp9 [V10 ] ( 0, 0 ) ref -> zero-ref

;* V11 tmp10 [V11 ] ( 0, 0 ) ref -> zero-ref

;

; Lcl frame size = 32

; Lcl frame size = 40

G_M46272_IG01:

push rdi

push rsi

push rbx

sub rsp, 40

sub rsp, 32

mov rsi, rcx

;; size=10 bbWeight=1 PerfScore 3.50

;; size=9 bbWeight=1 PerfScore 2.50

G_M46272_IG02:

call [System.Linq.Enumerable:TypeIsImplicitlyStable[int]():bool]

test eax, eax

jne G_M46272_IG04

;; size=14 bbWeight=1 PerfScore 4.25

G_M46272_IG03:

mov rcx, 0xD1FFAB1E

mov edx, 9

call CORINFO_HELP_CLASSINIT_SHARED_DYNAMICCLASS

mov rcx, 0xD1FFAB1E ; data for System.Linq.EnumerableSorter`1[int]:IdentityFunc

mov rdi, gword ptr [rcx]

mov rcx, 0xD1FFAB1E ; System.Linq.OrderedEnumerable`2[int,int]

call CORINFO_HELP_NEWSFAST

mov rbx, rax

lea rcx, bword ptr [rbx+08H]

mov rdx, rsi

call CORINFO_HELP_ASSIGN_REF

test rsi, rsi

je G_M46272_IG08

test rdi, rdi

je SHORT G_M46272_IG07

xor rdx, rdx

mov gword ptr [rbx+10H], rdx

lea rcx, bword ptr [rbx+18H]

mov rdx, rdi

call CORINFO_HELP_ASSIGN_REF

mov rcx, 0xD1FFAB1E

mov edx, 38

call CORINFO_HELP_CLASSINIT_SHARED_DYNAMICCLASS

mov rdx, 0xD1FFAB1E ; data for System.Collections.Generic.Comparer`1[int]:<Default>k__BackingField

mov rdx, gword ptr [rdx]

lea rcx, bword ptr [rbx+20H]

call CORINFO_HELP_ASSIGN_REF

mov byte ptr [rbx+28H], 1

jmp SHORT G_M46272_IG05

;; size=143 bbWeight=0.50 PerfScore 10.38

G_M46272_IG04:

mov rcx, 0xD1FFAB1E ; System.Linq.OrderedImplicitlyStableEnumerable`1[int]

call CORINFO_HELP_NEWSFAST

mov rbx, rax

mov rdi, rax

lea rcx, bword ptr [rbx+08H]

lea rcx, bword ptr [rdi+08H]

mov rdx, rsi

call CORINFO_HELP_ASSIGN_REF

test rsi, rsi

je SHORT G_M46272_IG08

je SHORT G_M46272_IG04

mov byte ptr [rbx+10H], 1

mov byte ptr [rdi+10H], 1

;; size=39 bbWeight=0.50 PerfScore 2.75

mov rax, rdi

G_M46272_IG05:

;; size=42 bbWeight=1 PerfScore 5.75

mov rax, rbx

G_M46272_IG03:

;; size=3 bbWeight=1 PerfScore 0.25

add rsp, 40

G_M46272_IG06:

add rsp, 32

pop rbx

pop rsi

pop rdi

ret

;; size=8 bbWeight=1 PerfScore 2.75

;; size=7 bbWeight=1 PerfScore 2.25

G_M46272_IG07:

G_M46272_IG04:

mov ecx, 9

call [System.Linq.ThrowHelper:ThrowArgumentNullException(int)]

int3

;; size=12 bbWeight=0 PerfScore 0.00

G_M46272_IG08:

mov ecx, 16

call [System.Linq.ThrowHelper:ThrowArgumentNullException(int)]

int3

;; size=12 bbWeight=0 PerfScore 0.00

; Total bytes of code 241, prolog size 7, PerfScore 47.98, instruction count 58, allocated bytes for code 241 (MethodHash=1faf4b3f) for method System.Linq.Enumerable:OrderDescending[int](System.Collections.Generic.IEnumerable`1[int]):System.Linq.IOrderedEnumerable`1[int]

; Total bytes of code 70, prolog size 6, PerfScore 17.50, instruction count 21, allocated bytes for code 70 (MethodHash=1faf4b3f) for method System.Linq.Enumerable:OrderDescending[int](System.Collections.Generic.IEnumerable`1[int]):System.Linq.IOrderedEnumerable`1[int]

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

Saved diffs

Original text

Open file

; Assembly listing for method System.Linq.Enumerable:OrderDescending[int](System.Collections.Generic.IEnumerable`1[int]):System.Linq.IOrderedEnumerable`1[int]
; Emitting BLENDED_CODE for X64 CPU with AVX - Windows
; optimized code
; rsp based frame
; partially interruptible
; No PGO data
; 0 inlinees with PGO data; 6 single block inlinees; 3 inlinees without PGO data
; Final local variable assignments
;
;  V00 arg0         [V00,T01] (  6,  4   )     ref  ->  rsi         class-hnd single-def
;  V01 OutArgs      [V01    ] (  1,  1   )  lclBlk (32) [rsp+00H]   "OutgoingArgSpace"
;  V02 tmp1         [V02,T04] (  3,  2   )     ref  ->  rbx         class-hnd "Inline return value spill temp"
;  V03 tmp2         [V03,T02] (  4,  4   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp"
;* V04 tmp3         [V04    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inline stloc first use temp"
;  V05 tmp4         [V05,T03] (  3,  3   )     ref  ->  rdi         class-hnd single-def "Inlining Arg"
;  V06 tmp5         [V06,T00] (  7,  7   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp"
;* V07 tmp6         [V07    ] (  0,  0   )     ref  ->  zero-ref    single-def
;* V08 tmp7         [V08    ] (  0,  0   )     ref  ->  zero-ref    single-def
;* V09 tmp8         [V09    ] (  0,  0   )     ref  ->  zero-ref    single-def
;  V10 tmp9         [V10,T05] (  2,  1   )     ref  ->  rdx         single-def
;
; Lcl frame size = 32

G_M46272_IG01:
       push     rdi
       push     rsi
       push     rbx
       sub      rsp, 32
       mov      rsi, rcx
						;; size=10 bbWeight=1    PerfScore 3.50
G_M46272_IG02:
       call     [System.Linq.Enumerable:TypeIsImplicitlyStable[int]():bool]
       test     eax, eax
       jne      G_M46272_IG04
						;; size=14 bbWeight=1    PerfScore 4.25
G_M46272_IG03:
       mov      rcx, 0xD1FFAB1E
       mov      edx, 9
       call     CORINFO_HELP_CLASSINIT_SHARED_DYNAMICCLASS
       mov      rcx, 0xD1FFAB1E      ; data for System.Linq.EnumerableSorter`1[int]:IdentityFunc
       mov      rdi, gword ptr [rcx]
       mov      rcx, 0xD1FFAB1E      ; System.Linq.OrderedEnumerable`2[int,int]
       call     CORINFO_HELP_NEWSFAST
       mov      rbx, rax
       lea      rcx, bword ptr [rbx+08H]
       mov      rdx, rsi
       call     CORINFO_HELP_ASSIGN_REF
       test     rsi, rsi
       je       G_M46272_IG08
       test     rdi, rdi
       je       SHORT G_M46272_IG07
       xor      rdx, rdx
       mov      gword ptr [rbx+10H], rdx
       lea      rcx, bword ptr [rbx+18H]
       mov      rdx, rdi
       call     CORINFO_HELP_ASSIGN_REF
       mov      rcx, 0xD1FFAB1E
       mov      edx, 38
       call     CORINFO_HELP_CLASSINIT_SHARED_DYNAMICCLASS
       mov      rdx, 0xD1FFAB1E      ; data for System.Collections.Generic.Comparer`1[int]:<Default>k__BackingField
       mov      rdx, gword ptr [rdx]
       lea      rcx, bword ptr [rbx+20H]
       call     CORINFO_HELP_ASSIGN_REF
       mov      byte  ptr [rbx+28H], 1
       jmp      SHORT G_M46272_IG05
						;; size=143 bbWeight=0.50 PerfScore 10.38
G_M46272_IG04:
       mov      rcx, 0xD1FFAB1E      ; System.Linq.OrderedImplicitlyStableEnumerable`1[int]
       call     CORINFO_HELP_NEWSFAST
       mov      rbx, rax
       lea      rcx, bword ptr [rbx+08H]
       mov      rdx, rsi
       call     CORINFO_HELP_ASSIGN_REF
       test     rsi, rsi
       je       SHORT G_M46272_IG08
       mov      byte  ptr [rbx+10H], 1
						;; size=39 bbWeight=0.50 PerfScore 2.75
G_M46272_IG05:
       mov      rax, rbx
						;; size=3 bbWeight=1    PerfScore 0.25
G_M46272_IG06:
       add      rsp, 32
       pop      rbx
       pop      rsi
       pop      rdi
       ret      
						;; size=8 bbWeight=1    PerfScore 2.75
G_M46272_IG07:
       mov      ecx, 9
       call     [System.Linq.ThrowHelper:ThrowArgumentNullException(int)]
       int3     
						;; size=12 bbWeight=0    PerfScore 0.00
G_M46272_IG08:
       mov      ecx, 16
       call     [System.Linq.ThrowHelper:ThrowArgumentNullException(int)]
       int3     
						;; size=12 bbWeight=0    PerfScore 0.00

Changed text

Open file

; Assembly listing for method System.Linq.Enumerable:OrderDescending[int](System.Collections.Generic.IEnumerable`1[int]):System.Linq.IOrderedEnumerable`1[int]
; Emitting BLENDED_CODE for X64 CPU with AVX - Windows
; optimized code
; rsp based frame
; partially interruptible
; No PGO data
; 0 inlinees with PGO data; 6 single block inlinees; 4 inlinees without PGO data
; Final local variable assignments
;
;  V00 arg0         [V00,T01] (  4,  4   )     ref  ->  rsi         class-hnd single-def
;  V01 OutArgs      [V01    ] (  1,  1   )  lclBlk (32) [rsp+00H]   "OutgoingArgSpace"
;  V02 tmp1         [V02,T02] (  2,  2   )     ref  ->  rax         class-hnd single-def "Inline return value spill temp"
;  V03 tmp2         [V03,T00] (  4,  8   )     ref  ->  rdi         class-hnd exact single-def "NewObj constructor temp"
;* V04 tmp3         [V04    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inline stloc first use temp"
;* V05 tmp4         [V05    ] (  0,  0   )    bool  ->  zero-ref    "Inline return value spill temp"
;* V06 tmp5         [V06    ] (  0,  0   )     ref  ->  zero-ref    class-hnd "Inlining Arg"
;* V07 tmp6         [V07    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "NewObj constructor temp"
;* V08 tmp7         [V08    ] (  0,  0   )     ref  ->  zero-ref   
;* V09 tmp8         [V09    ] (  0,  0   )     ref  ->  zero-ref   
;* V10 tmp9         [V10    ] (  0,  0   )     ref  ->  zero-ref   
;* V11 tmp10        [V11    ] (  0,  0   )     ref  ->  zero-ref   
;
; Lcl frame size = 40

G_M46272_IG01:
       push     rdi
       push     rsi
       sub      rsp, 40
       mov      rsi, rcx
						;; size=9 bbWeight=1    PerfScore 2.50
G_M46272_IG02:
       mov      rcx, 0xD1FFAB1E      ; System.Linq.OrderedImplicitlyStableEnumerable`1[int]
       call     CORINFO_HELP_NEWSFAST
       mov      rdi, rax
       lea      rcx, bword ptr [rdi+08H]
       mov      rdx, rsi
       call     CORINFO_HELP_ASSIGN_REF
       test     rsi, rsi
       je       SHORT G_M46272_IG04
       mov      byte  ptr [rdi+10H], 1
       mov      rax, rdi
						;; size=42 bbWeight=1    PerfScore 5.75
G_M46272_IG03:
       add      rsp, 40
       pop      rsi
       pop      rdi
       ret      
						;; size=7 bbWeight=1    PerfScore 2.25
G_M46272_IG04:
       mov      ecx, 16
       call     [System.Linq.ThrowHelper:ThrowArgumentNullException(int)]
       int3     
						;; size=12 bbWeight=0    PerfScore 0.00