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clang-p2996/llvm/test/CodeGen/X86/stack-folding-adx.mir
Craig Topper 7323c2bf85 [X86] Merge the different SETcc instructions for each condition code into single instructions that store the condition code as an operand. 
Summary:
This avoids needing an isel pattern for each condition code. And it removes translation switches for converting between SETcc instructions and condition codes.

Now the printer, encoder and disassembler take care of converting the immediate. We use InstAliases to handle the assembly matching. But we print using the asm string in the instruction definition. The instruction itself is marked IsCodeGenOnly=1 to hide it from the assembly parser.

Reviewers: andreadb, courbet, RKSimon, spatel, lebedev.ri

Reviewed By: andreadb

Subscribers: hiraditya, lebedev.ri, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60138

llvm-svn: 357801
2019-04-05 19:27:49 +00:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -o - -mtriple=x86_64-- -run-pass=greedy %s | FileCheck %s
# Tests for stack folding ADCX and ADOX. The ADOX tests were manually constructed by modifying ADCX tests to use OF instead of CF.
--- |
; Function Attrs: nounwind
define i8 @stack_fold_adcx32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
%3 = extractvalue { i8, i32 } %2, 1
%4 = bitcast i8* %a3 to i32*
store i32 %3, i32* %4, align 1
%5 = extractvalue { i8, i32 } %2, 0
ret i8 %5
}
; Function Attrs: nounwind
define i8 @stack_fold_adcx64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
%3 = extractvalue { i8, i64 } %2, 1
%4 = bitcast i8* %a3 to i64*
store i64 %3, i64* %4, align 1
%5 = extractvalue { i8, i64 } %2, 0
ret i8 %5
}
define i8 @stack_fold_adox32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
%3 = extractvalue { i8, i32 } %2, 1
%4 = bitcast i8* %a3 to i32*
store i32 %3, i32* %4, align 1
%5 = extractvalue { i8, i32 } %2, 0
ret i8 %5
}
; Function Attrs: nounwind
define i8 @stack_fold_adox64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
%3 = extractvalue { i8, i64 } %2, 1
%4 = bitcast i8* %a3 to i64*
store i64 %3, i64* %4, align 1
%5 = extractvalue { i8, i64 } %2, 0
ret i8 %5
}
; Function Attrs: nounwind readnone
declare { i8, i32 } @llvm.x86.addcarry.32(i8, i32, i32) #1
; Function Attrs: nounwind readnone
declare { i8, i64 } @llvm.x86.addcarry.64(i8, i64, i64) #1
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #2
attributes #0 = { nounwind "target-features"="+adx" }
attributes #1 = { nounwind readnone "target-features"="+adx" }
attributes #2 = { nounwind }
...
---
name: stack_fold_adcx32
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gr32 }
- { id: 1, class: gr32 }
- { id: 2, class: gr32 }
- { id: 3, class: gr64 }
- { id: 4, class: fr64 }
- { id: 5, class: gr8 }
- { id: 6, class: gr8 }
- { id: 7, class: gr32 }
- { id: 8, class: gr8 }
liveins:
- { reg: '$edi', virtual-reg: '%0' }
- { reg: '$esi', virtual-reg: '%1' }
- { reg: '$edx', virtual-reg: '%2' }
- { reg: '$rcx', virtual-reg: '%3' }
body: |
bb.0 (%ir-block.0):
liveins: $edi, $esi, $edx, $rcx
; CHECK-LABEL: name: stack_fold_adcx32
; CHECK: liveins: $edi, $esi, $edx, $rcx
; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store 4 into %stack.1)
; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store 4 into %stack.2)
; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
; CHECK: INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load 4 from %stack.2)
; CHECK: [[ADCX32rm:%[0-9]+]]:gr32 = ADCX32rm [[ADCX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 4 from %stack.1)
; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX32rm]] :: (store 4 into %ir.4, align 1)
; CHECK: $al = COPY [[SETCCr]]
; CHECK: RET 0, $al
%3:gr64 = COPY $rcx
%2:gr32 = COPY $edx
%7:gr32 = COPY $esi
%0:gr32 = COPY $edi
INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
%7:gr32 = ADCX32rr %7, %2, implicit-def $eflags, implicit killed $eflags
%8:gr8 = SETCCr 2, implicit killed $eflags
MOV32mr %3, 1, $noreg, 0, $noreg, %7 :: (store 4 into %ir.4, align 1)
$al = COPY %8
RET 0, killed $al
...
---
name: stack_fold_adcx64
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gr32 }
- { id: 1, class: gr64 }
- { id: 2, class: gr64 }
- { id: 3, class: gr64 }
- { id: 4, class: fr64 }
- { id: 5, class: gr8 }
- { id: 6, class: gr8 }
- { id: 7, class: gr64 }
- { id: 8, class: gr8 }
liveins:
- { reg: '$edi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
- { reg: '$rdx', virtual-reg: '%2' }
- { reg: '$rcx', virtual-reg: '%3' }
body: |
bb.0 (%ir-block.0):
liveins: $edi, $rsi, $rdx, $rcx
; CHECK-LABEL: name: stack_fold_adcx64
; CHECK: liveins: $edi, $rsi, $rdx, $rcx
; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store 8 into %stack.1)
; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store 8 into %stack.2)
; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
; CHECK: INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load 8 from %stack.2)
; CHECK: [[ADCX64rm:%[0-9]+]]:gr64 = ADCX64rm [[ADCX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 8 from %stack.1)
; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX64rm]] :: (store 8 into %ir.4, align 1)
; CHECK: $al = COPY [[SETCCr]]
; CHECK: RET 0, $al
%3:gr64 = COPY $rcx
%2:gr64 = COPY $rdx
%7:gr64 = COPY $rsi
%0:gr32 = COPY $edi
INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
%7:gr64 = ADCX64rr %7, %2, implicit-def $eflags, implicit killed $eflags
%8:gr8 = SETCCr 2, implicit killed $eflags
MOV64mr %3, 1, $noreg, 0, $noreg, %7 :: (store 8 into %ir.4, align 1)
$al = COPY %8
RET 0, killed $al
...
---
name: stack_fold_adox32
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gr32 }
- { id: 1, class: gr32 }
- { id: 2, class: gr32 }
- { id: 3, class: gr64 }
- { id: 4, class: fr64 }
- { id: 5, class: gr8 }
- { id: 6, class: gr8 }
- { id: 7, class: gr32 }
- { id: 8, class: gr8 }
liveins:
- { reg: '$edi', virtual-reg: '%0' }
- { reg: '$esi', virtual-reg: '%1' }
- { reg: '$edx', virtual-reg: '%2' }
- { reg: '$rcx', virtual-reg: '%3' }
body: |
bb.0 (%ir-block.0):
liveins: $edi, $esi, $edx, $rcx
; CHECK-LABEL: name: stack_fold_adox32
; CHECK: liveins: $edi, $esi, $edx, $rcx
; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store 4 into %stack.1)
; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store 4 into %stack.2)
; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
; CHECK: INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, 127, implicit-def $eflags
; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load 4 from %stack.2)
; CHECK: [[ADOX32rm:%[0-9]+]]:gr32 = ADOX32rm [[ADOX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 4 from %stack.1)
; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 0, implicit killed $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX32rm]] :: (store 4 into %ir.4, align 1)
; CHECK: $al = COPY [[SETCCr]]
; CHECK: RET 0, $al
%3:gr64 = COPY $rcx
%2:gr32 = COPY $edx
%7:gr32 = COPY $esi
%0:gr32 = COPY $edi
INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, 127, implicit-def $eflags
%7:gr32 = ADOX32rr %7, %2, implicit-def $eflags, implicit killed $eflags
%8:gr8 = SETCCr 0, implicit killed $eflags
MOV32mr %3, 1, $noreg, 0, $noreg, %7 :: (store 4 into %ir.4, align 1)
$al = COPY %8
RET 0, killed $al
...
---
name: stack_fold_adox64
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gr32 }
- { id: 1, class: gr64 }
- { id: 2, class: gr64 }
- { id: 3, class: gr64 }
- { id: 4, class: fr64 }
- { id: 5, class: gr8 }
- { id: 6, class: gr8 }
- { id: 7, class: gr64 }
- { id: 8, class: gr8 }
liveins:
- { reg: '$edi', virtual-reg: '%0' }
- { reg: '$rsi', virtual-reg: '%1' }
- { reg: '$rdx', virtual-reg: '%2' }
- { reg: '$rcx', virtual-reg: '%3' }
body: |
bb.0 (%ir-block.0):
liveins: $edi, $rsi, $rdx, $rcx
; CHECK-LABEL: name: stack_fold_adox64
; CHECK: liveins: $edi, $rsi, $rdx, $rcx
; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store 8 into %stack.1)
; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store 8 into %stack.2)
; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
; CHECK: INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, 127, implicit-def $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load 8 from %stack.2)
; CHECK: [[ADOX64rm:%[0-9]+]]:gr64 = ADOX64rm [[ADOX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 8 from %stack.1)
; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 0, implicit killed $eflags
; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX64rm]] :: (store 8 into %ir.4, align 1)
; CHECK: $al = COPY [[SETCCr]]
; CHECK: RET 0, $al
%3:gr64 = COPY $rcx
%2:gr64 = COPY $rdx
%7:gr64 = COPY $rsi
%0:gr32 = COPY $edi
INLINEASM &nop, 1, 3145738, def dead %4, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15
dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, 127, implicit-def $eflags
%7:gr64 = ADOX64rr %7, %2, implicit-def $eflags, implicit killed $eflags
%8:gr8 = SETCCr 0, implicit killed $eflags
MOV64mr %3, 1, $noreg, 0, $noreg, %7 :: (store 8 into %ir.4, align 1)
$al = COPY %8
RET 0, killed $al
...
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