| ; RUN: llc < %s -mtriple=i386-apple-darwin | FileCheck %s | |
| ; rdar://r7512579 | |
| ; PHI defs in the atomic loop should be used by the add / adc | |
| ; instructions. They should not be dead. | |
| define void @t(i64* nocapture %p) nounwind ssp { | |
| entry: | |
| ; CHECK: t: | |
| ; CHECK: movl $1 | |
| ; CHECK: movl (%ebp), %eax | |
| ; CHECK: movl 4(%ebp), %edx | |
| ; CHECK: LBB0_1: | |
| ; CHECK-NOT: movl $1 | |
| ; CHECK-NOT: movl $0 | |
| ; CHECK: addl | |
| ; CHECK: adcl | |
| ; CHECK: lock | |
| ; CHECK: cmpxchg8b | |
| ; CHECK: jne | |
| %0 = atomicrmw add i64* %p, i64 1 seq_cst | |
| ret void | |
| } |