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# RUN: llc -march=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, i32* %tmp, align 4
%tmp4 = call i32 @doSomething(i32 0, i32* %tmp)
br label %false
false:
%tmp.0 = phi i32 [ %tmp4, %true ], [ %a, %entry ]
ret i32 %tmp.0
}
declare i32 @doSomething(i32, i32*)
...
---
name: foo
tracksRegLiveness: true
liveins:
- { reg: '%edi' }
- { reg: '%esi' }
# CHECK: frameInfo:
# CHECK: savePoint: '%bb.2.true'
# CHECK-NEXT: restorePoint: '%bb.2.true'
# CHECK: stack
frameInfo:
maxAlignment: 4
hasCalls: true
savePoint: '%bb.2.true'
restorePoint: '%bb.2.true'
stack:
- { id: 0, name: tmp, offset: 0, size: 4, alignment: 4 }
body: |
bb.0:
successors: %bb.2.true, %bb.1
liveins: %edi, %esi
%eax = COPY %edi
CMP32rr %eax, killed %esi, implicit-def %eflags
JL_1 %bb.2.true, implicit killed %eflags
bb.1:
successors: %bb.3.false
liveins: %eax
JMP_1 %bb.3.false
bb.2.true:
successors: %bb.3.false
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
RETQ %eax
...
|
