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|
# RUN: llc -mtriple=x86_64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the save and restore points in
# the machine frame info correctly.
--- |
define i32 @foo(i32 %a, i32 %b) {
entry:
%tmp = alloca i32, align 4
%tmp2 = icmp slt i32 %a, %b
br i1 %tmp2, label %true, label %false
true:
store i32 %a, ptr %tmp, align 4
%tmp4 = call i32 @doSomething(i32 0, ptr %tmp)
br label %false
false:
%tmp.0 = phi i32 [ %tmp4, %true ], [ %a, %entry ]
ret i32 %tmp.0
}
declare i32 @doSomething(i32, ptr)
...
---
name: foo
tracksRegLiveness: true
liveins:
- { reg: '$edi' }
- { reg: '$esi' }
# CHECK: frameInfo:
# CHECK: savePoint:
# CHECK-NEXT: - point: '%bb.1'
# CHECK-NEXT: registers: []
# CHECK-NEXT: - point: '%bb.2'
# CHECK-NEXT: registers: []
# CHECK: restorePoint:
# CHECK-NEXT: - point: '%bb.2'
# CHECK-NEXT: registers: []
# CHECK-NEXT: - point: '%bb.3'
# CHECK-NEXT: registers: []
# CHECK: stack
frameInfo:
maxAlignment: 4
hasCalls: true
savePoint:
- point: '%bb.1'
- point: '%bb.2'
restorePoint:
- point: '%bb.2'
- point: '%bb.3'
stack:
- { id: 0, name: tmp, offset: 0, size: 4, alignment: 4 }
body: |
bb.0:
successors: %bb.2, %bb.1
liveins: $edi, $esi
$eax = COPY $edi
CMP32rr $eax, killed $esi, implicit-def $eflags
JCC_1 %bb.2, 12, implicit killed $eflags
bb.1:
successors: %bb.3
liveins: $eax
JMP_1 %bb.3
bb.2.true:
successors: %bb.3
liveins: $eax
MOV32mr %stack.0.tmp, 1, _, 0, _, killed $eax
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eflags, implicit $rsp, implicit $ssp
$rsi = LEA64r %stack.0.tmp, 1, _, 0, _
$edi = MOV32r0 implicit-def dead $eflags
CALL64pcrel32 @doSomething, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $rsi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eflags, implicit $rsp, implicit $ssp
bb.3.false:
liveins: $eax
RET64 $eax
...
|
