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| # RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
--- |
define i32 @compute(i32 %a) {
body:
ret i32 %a
}
define i32 @func(i32 %a) {
entry:
%b = alloca i32
store i32 %a, i32* %b
br label %check
check:
%comp = icmp sle i32 %a, 10
br i1 %comp, label %loop, label %exit
loop:
%c = load i32, i32* %b
%d = call i32 @compute(i32 %c)
%e = sub i32 %d, 1
store i32 %e, i32* %b
br label %check
exit:
ret i32 0
}
...
---
name: compute
tracksRegLiveness: true
body: |
bb.0.body:
liveins: $edi
$eax = COPY killed $edi
RETQ killed $eax
...
---
name: func
tracksRegLiveness: true
frameInfo:
stackSize: 24
maxAlignment: 4
adjustsStack: true
hasCalls: true
fixedStack:
# CHECK: [[@LINE+1]]:93: expected a named register
- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%0' }
stack:
- { id: 0, name: b, offset: -20, size: 4, alignment: 4 }
body: |
bb.0.entry:
successors: %bb.1.check
liveins: $edi, $rbx
frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
$rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
$ebx = COPY $edi
MOV32mr $rsp, 1, _, 12, _, $ebx
bb.1.check:
successors: %bb.2.loop, %bb.3.exit
liveins: $ebx
CMP32ri8 $ebx, 10, implicit-def $eflags
JCC_1 %bb.3.exit, 15, implicit killed $eflags
JMP_1 %bb.2.loop
bb.2.loop:
successors: %bb.1.check
liveins: $ebx
$edi = MOV32rm $rsp, 1, _, 12, _
CALL64pcrel32 @compute, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax
$eax = DEC32r killed $eax, implicit-def dead $eflags
MOV32mr $rsp, 1, _, 12, _, killed $eax
JMP_1 %bb.1.check
bb.3.exit:
$eax = MOV32r0 implicit-def dead $eflags
$rsp = ADD64ri8 $rsp, 16, implicit-def dead $eflags
$rbx = POP64r implicit-def $rsp, implicit $rsp
RETQ $eax
...
|