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llvm / llvm / 6c31f1e00d9d92d731fdebdb107fc2badb6d4585 / . / test / CodeGen / X86 / flags-copy-lowering.mir
blob: 67717abf6c0f1a9edf6943456817b4c8ad93b5b0 [file] [log] [blame]
# RUN: llc -run-pass x86-flags-copy-lowering -verify-machineinstrs -o - %s | FileCheck %s
#
# Lower various interesting copy patterns of EFLAGS without using LAHF/SAHF.
--- |
target triple = "x86_64-unknown-unknown"
declare void @foo()
define i32 @test_branch(i64 %a, i64 %b) {
entry:
call void @foo()
ret i32 0
}
define i32 @test_branch_fallthrough(i64 %a, i64 %b) {
entry:
call void @foo()
ret i32 0
}
define void @test_setcc(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_cmov(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_adc(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_sbb(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_adcx(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_adox(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_rcl(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_rcr(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define void @test_setb_c(i64 %a, i64 %b) {
entry:
call void @foo()
ret void
}
define i64 @test_branch_with_livein_and_kill(i64 %a, i64 %b) {
entry:
call void @foo()
ret i64 0
}
...
---
name: test_branch
# CHECK-LABEL: name: test_branch
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
successors: %bb.1, %bb.2, %bb.3
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
CMP64rr %0, %1, implicit-def $eflags
%2:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[A_REG:[^:]*]]:gr8 = SETAr implicit $eflags
; CHECK-NEXT: %[[B_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %2
JA_1 %bb.1, implicit $eflags
JB_1 %bb.2, implicit $eflags
JMP_1 %bb.3
; CHECK-NOT: $eflags =
;
; CHECK: TEST8rr %[[A_REG]], %[[A_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.1, implicit killed $eflags
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: {{.*$}}
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: TEST8rr %[[B_REG]], %[[B_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.2, implicit killed $eflags
; CHECK-NEXT: JMP_1 %bb.3
bb.1:
%3:gr32 = MOV32ri64 42
$eax = COPY %3
RET 0, $eax
bb.2:
%4:gr32 = MOV32ri64 43
$eax = COPY %4
RET 0, $eax
bb.3:
%5:gr32 = MOV32r0 implicit-def dead $eflags
$eax = COPY %5
RET 0, $eax
...
---
name: test_branch_fallthrough
# CHECK-LABEL: name: test_branch_fallthrough
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
successors: %bb.1, %bb.2, %bb.3
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
CMP64rr %0, %1, implicit-def $eflags
%2:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[A_REG:[^:]*]]:gr8 = SETAr implicit $eflags
; CHECK-NEXT: %[[B_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %2
JA_1 %bb.2, implicit $eflags
JB_1 %bb.3, implicit $eflags
; CHECK-NOT: $eflags =
;
; CHECK: TEST8rr %[[A_REG]], %[[A_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.2, implicit killed $eflags
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: {{.*$}}
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: TEST8rr %[[B_REG]], %[[B_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.3, implicit killed $eflags
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: bb.1:
bb.1:
%5:gr32 = MOV32r0 implicit-def dead $eflags
$eax = COPY %5
RET 0, $eax
bb.2:
%3:gr32 = MOV32ri64 42
$eax = COPY %3
RET 0, $eax
bb.3:
%4:gr32 = MOV32ri64 43
$eax = COPY %4
RET 0, $eax
...
---
name: test_setcc
# CHECK-LABEL: name: test_setcc
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
CMP64rr %0, %1, implicit-def $eflags
%2:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[A_REG:[^:]*]]:gr8 = SETAr implicit $eflags
; CHECK-NEXT: %[[B_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NEXT: %[[E_REG:[^:]*]]:gr8 = SETEr implicit $eflags
; CHECK-NEXT: %[[NE_REG:[^:]*]]:gr8 = SETNEr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %2
%3:gr8 = SETAr implicit $eflags
%4:gr8 = SETBr implicit $eflags
%5:gr8 = SETEr implicit $eflags
SETNEm $rsp, 1, $noreg, -16, $noreg, implicit killed $eflags
MOV8mr $rsp, 1, $noreg, -16, $noreg, killed %3
MOV8mr $rsp, 1, $noreg, -16, $noreg, killed %4
MOV8mr $rsp, 1, $noreg, -16, $noreg, killed %5
; CHECK-NOT: $eflags =
; CHECK-NOT: = SET{{.*}}
; CHECK: MOV8mr {{.*}}, killed %[[A_REG]]
; CHECK-NEXT: MOV8mr {{.*}}, killed %[[B_REG]]
; CHECK-NEXT: MOV8mr {{.*}}, killed %[[E_REG]]
; CHECK-NOT: MOV8mr {{.*}}, killed %[[NE_REG]]
RET 0
...
---
name: test_cmov
# CHECK-LABEL: name: test_cmov
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
CMP64rr %0, %1, implicit-def $eflags
%2:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[A_REG:[^:]*]]:gr8 = SETAr implicit $eflags
; CHECK-NEXT: %[[B_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NEXT: %[[E_REG:[^:]*]]:gr8 = SETEr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %2
%3:gr64 = CMOVA64rr %0, %1, implicit $eflags
%4:gr64 = CMOVB64rr %0, %1, implicit $eflags
%5:gr64 = CMOVE64rr %0, %1, implicit $eflags
%6:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[A_REG]], %[[A_REG]], implicit-def $eflags
; CHECK-NEXT: %3:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NEXT: TEST8rr %[[B_REG]], %[[B_REG]], implicit-def $eflags
; CHECK-NEXT: %4:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NEXT: TEST8rr %[[E_REG]], %[[E_REG]], implicit-def $eflags
; CHECK-NEXT: %5:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NEXT: TEST8rr %[[E_REG]], %[[E_REG]], implicit-def $eflags
; CHECK-NEXT: %6:gr64 = CMOVE64rr %0, %1, implicit killed $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %3
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %4
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %5
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %6
RET 0
...
---
name: test_adc
# CHECK-LABEL: name: test_adc
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = ADC64ri32 %2:gr64, 42, implicit-def $eflags, implicit $eflags
%5:gr64 = ADC64ri32 %4:gr64, 42, implicit-def $eflags, implicit $eflags
; CHECK-NOT: $eflags =
; CHECK: dead %{{[^:]*}}:gr8 = ADD8ri %[[CF_REG]], 255, implicit-def $eflags
; CHECK-NEXT: %4:gr64 = ADC64ri32 %2, 42, implicit-def $eflags, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = ADC64ri32 %4, 42, implicit-def{{( dead)?}} $eflags, implicit{{( killed)?}} $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %5
RET 0
...
---
name: test_sbb
# CHECK-LABEL: name: test_sbb
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = SUB64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY killed $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = SBB64ri32 %2:gr64, 42, implicit-def $eflags, implicit killed $eflags
%5:gr64 = SBB64ri32 %4:gr64, 42, implicit-def dead $eflags, implicit killed $eflags
; CHECK-NOT: $eflags =
; CHECK: dead %{{[^:]*}}:gr8 = ADD8ri %[[CF_REG]], 255, implicit-def $eflags
; CHECK-NEXT: %4:gr64 = SBB64ri32 %2, 42, implicit-def $eflags, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = SBB64ri32 %4, 42, implicit-def{{( dead)?}} $eflags, implicit{{( killed)?}} $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %5
RET 0
...
---
name: test_adcx
# CHECK-LABEL: name: test_adcx
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[E_REG:[^:]*]]:gr8 = SETEr implicit $eflags
; CHECK-NEXT: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = CMOVE64rr %0, %1, implicit $eflags
%5:gr64 = MOV64ri32 42
%6:gr64 = ADCX64rr %2, %5, implicit-def $eflags, implicit $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[E_REG]], %[[E_REG]], implicit-def $eflags
; CHECK-NEXT: %4:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = MOV64ri32 42
; CHECK-NEXT: dead %{{[^:]*}}:gr8 = ADD8ri %[[CF_REG]], 255, implicit-def $eflags
; CHECK-NEXT: %6:gr64 = ADCX64rr %2, %5, implicit-def{{( dead)?}} $eflags, implicit killed $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %4
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %6
RET 0
...
---
name: test_adox
# CHECK-LABEL: name: test_adox
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[E_REG:[^:]*]]:gr8 = SETEr implicit $eflags
; CHECK-NEXT: %[[OF_REG:[^:]*]]:gr8 = SETOr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = CMOVE64rr %0, %1, implicit $eflags
%5:gr64 = MOV64ri32 42
%6:gr64 = ADOX64rr %2, %5, implicit-def $eflags, implicit $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[E_REG]], %[[E_REG]], implicit-def $eflags
; CHECK-NEXT: %4:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = MOV64ri32 42
; CHECK-NEXT: dead %{{[^:]*}}:gr8 = ADD8ri %[[OF_REG]], 127, implicit-def $eflags
; CHECK-NEXT: %6:gr64 = ADOX64rr %2, %5, implicit-def{{( dead)?}} $eflags, implicit killed $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %4
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %6
RET 0
...
---
name: test_rcl
# CHECK-LABEL: name: test_rcl
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = RCL64r1 %2:gr64, implicit-def $eflags, implicit $eflags
%5:gr64 = RCL64r1 %4:gr64, implicit-def $eflags, implicit $eflags
; CHECK-NOT: $eflags =
; CHECK: dead %{{[^:]*}}:gr8 = ADD8ri %[[CF_REG]], 255, implicit-def $eflags
; CHECK-NEXT: %4:gr64 = RCL64r1 %2, implicit-def $eflags, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = RCL64r1 %4, implicit-def{{( dead)?}} $eflags, implicit{{( killed)?}} $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %5
RET 0
...
---
name: test_rcr
# CHECK-LABEL: name: test_rcr
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr64 = RCR64r1 %2:gr64, implicit-def $eflags, implicit $eflags
%5:gr64 = RCR64r1 %4:gr64, implicit-def $eflags, implicit $eflags
; CHECK-NOT: $eflags =
; CHECK: dead %{{[^:]*}}:gr8 = ADD8ri %[[CF_REG]], 255, implicit-def $eflags
; CHECK-NEXT: %4:gr64 = RCR64r1 %2, implicit-def $eflags, implicit killed $eflags
; CHECK-NEXT: %5:gr64 = RCR64r1 %4, implicit-def{{( dead)?}} $eflags, implicit{{( killed)?}} $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %5
RET 0
...
---
name: test_setb_c
# CHECK-LABEL: name: test_setb_c
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
%2:gr64 = ADD64rr %0, %1, implicit-def $eflags
%3:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[CF_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %3
%4:gr8 = SETB_C8r implicit-def $eflags, implicit $eflags
MOV8mr $rsp, 1, $noreg, -16, $noreg, killed %4
; CHECK-NOT: $eflags =
; CHECK: %[[ZERO:[^:]*]]:gr32 = MOV32r0 implicit-def $eflags
; CHECK-NEXT: %[[ZERO_SUBREG:[^:]*]]:gr8 = EXTRACT_SUBREG %[[ZERO]], %subreg.sub_8bit
; CHECK-NEXT: %[[REPLACEMENT:[^:]*]]:gr8 = SUB8rr %[[ZERO_SUBREG]], %[[CF_REG]]
; CHECK-NEXT: MOV8mr $rsp, 1, $noreg, -16, $noreg, killed %[[REPLACEMENT]]
$eflags = COPY %3
%5:gr16 = SETB_C16r implicit-def $eflags, implicit $eflags
MOV16mr $rsp, 1, $noreg, -16, $noreg, killed %5
; CHECK-NOT: $eflags =
; CHECK: %[[CF_EXT:[^:]*]]:gr32 = MOVZX32rr8 %[[CF_REG]]
; CHECK-NEXT: %[[CF_TRUNC:[^:]*]]:gr16 = EXTRACT_SUBREG %[[CF_EXT]], %subreg.sub_16bit
; CHECK-NEXT: %[[ZERO:[^:]*]]:gr32 = MOV32r0 implicit-def $eflags
; CHECK-NEXT: %[[ZERO_SUBREG:[^:]*]]:gr16 = EXTRACT_SUBREG %[[ZERO]], %subreg.sub_16bit
; CHECK-NEXT: %[[REPLACEMENT:[^:]*]]:gr16 = SUB16rr %[[ZERO_SUBREG]], %[[CF_TRUNC]]
; CHECK-NEXT: MOV16mr $rsp, 1, $noreg, -16, $noreg, killed %[[REPLACEMENT]]
$eflags = COPY %3
%6:gr32 = SETB_C32r implicit-def $eflags, implicit $eflags
MOV32mr $rsp, 1, $noreg, -16, $noreg, killed %6
; CHECK-NOT: $eflags =
; CHECK: %[[CF_EXT:[^:]*]]:gr32 = MOVZX32rr8 %[[CF_REG]]
; CHECK-NEXT: %[[ZERO:[^:]*]]:gr32 = MOV32r0 implicit-def $eflags
; CHECK-NEXT: %[[REPLACEMENT:[^:]*]]:gr32 = SUB32rr %[[ZERO]], %[[CF_EXT]]
; CHECK-NEXT: MOV32mr $rsp, 1, $noreg, -16, $noreg, killed %[[REPLACEMENT]]
$eflags = COPY %3
%7:gr64 = SETB_C64r implicit-def $eflags, implicit $eflags
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %7
; CHECK-NOT: $eflags =
; CHECK: %[[CF_EXT1:[^:]*]]:gr32 = MOVZX32rr8 %[[CF_REG]]
; CHECK-NEXT: %[[CF_EXT2:[^:]*]]:gr64 = SUBREG_TO_REG 0, %[[CF_EXT1]], %subreg.sub_32bit
; CHECK-NEXT: %[[ZERO:[^:]*]]:gr32 = MOV32r0 implicit-def $eflags
; CHECK-NEXT: %[[ZERO_EXT:[^:]*]]:gr64 = SUBREG_TO_REG 0, %[[ZERO]], %subreg.sub_32bit
; CHECK-NEXT: %[[REPLACEMENT:[^:]*]]:gr64 = SUB64rr %[[ZERO_EXT]], %[[CF_EXT2]]
; CHECK-NEXT: MOV64mr $rsp, 1, $noreg, -16, $noreg, killed %[[REPLACEMENT]]
RET 0
...
---
name: test_branch_with_livein_and_kill
# CHECK-LABEL: name: test_branch_with_livein_and_kill
liveins:
- { reg: '$rdi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
body: |
bb.0:
successors: %bb.1, %bb.2, %bb.3
liveins: $rdi, $rsi
%0:gr64 = COPY $rdi
%1:gr64 = COPY $rsi
CMP64rr %0, %1, implicit-def $eflags
%2:gr64 = COPY $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
; CHECK: %[[S_REG:[^:]*]]:gr8 = SETSr implicit $eflags
; CHECK-NEXT: %[[NE_REG:[^:]*]]:gr8 = SETNEr implicit $eflags
; CHECK-NEXT: %[[A_REG:[^:]*]]:gr8 = SETAr implicit $eflags
; CHECK-NEXT: %[[B_REG:[^:]*]]:gr8 = SETBr implicit $eflags
; CHECK-NOT: COPY{{( killed)?}} $eflags
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$eflags = COPY %2
JA_1 %bb.1, implicit $eflags
JB_1 %bb.2, implicit $eflags
JMP_1 %bb.3
; CHECK-NOT: $eflags =
;
; CHECK: TEST8rr %[[A_REG]], %[[A_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.1, implicit killed $eflags
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: {{.*$}}
; CHECK-SAME: {{$[[:space:]]}}
; CHECK-NEXT: TEST8rr %[[B_REG]], %[[B_REG]], implicit-def $eflags
; CHECK-NEXT: JNE_1 %bb.2, implicit killed $eflags
; CHECK-NEXT: JMP_1 %bb.3
bb.1:
liveins: $eflags
%3:gr64 = CMOVE64rr %0, %1, implicit killed $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[NE_REG]], %[[NE_REG]], implicit-def $eflags
; CHECK-NEXT: %3:gr64 = CMOVE64rr %0, %1, implicit killed $eflags
$rax = COPY %3
RET 0, $rax
bb.2:
liveins: $eflags
%4:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[NE_REG]], %[[NE_REG]], implicit-def $eflags
; CHECK-NEXT: %4:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
$rax = COPY %4
RET 0, $rax
bb.3:
liveins: $eflags
%5:gr64 = CMOVS64rr %0, %1, implicit killed $eflags
; CHECK-NOT: $eflags =
; CHECK: TEST8rr %[[S_REG]], %[[S_REG]], implicit-def $eflags
; CHECK-NEXT: %5:gr64 = CMOVNE64rr %0, %1, implicit killed $eflags
$rax = COPY %5
RET 0, $rax
...