| ; rdar://8465407 | |
| ; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s | |
| %struct.buf = type opaque | |
| declare void @bar() nounwind optsize | |
| define void @foo() nounwind optsize "frame-pointer"="all" { | |
| ; CHECK-LABEL: foo: | |
| ; CHECK: push | |
| ; CHECK: add r7, sp | |
| ; CHECK: sub sp, #4 | |
| entry: | |
| %m.i = alloca %struct.buf*, align 4 | |
| br label %bb | |
| bb: | |
| br i1 undef, label %bb3, label %bb2 | |
| bb2: | |
| call void @bar() nounwind optsize | |
| br i1 undef, label %bb, label %bb3 | |
| bb3: | |
| br i1 undef, label %return, label %bb | |
| return: | |
| ; CHECK: %bb3 | |
| ; 'mov sp, r7' would have left sp in an invalid state | |
| ; CHECK-NOT: mov sp, r7 | |
| ; CHECK-NOT: sub, sp, #4 | |
| ; CHECK: add sp, #4 | |
| ret void | |
| } |