| ; RUN: llc < %s -O2 -march=x86-64 -verify-machineinstrs | FileCheck %s | |
| define void @pr21099(i64* %p) { | |
| ; CHECK-LABEL: pr21099 | |
| ; CHECK: lock | |
| ; CHECK-NEXT: addq $-2147483648 | |
| ; This number is INT32_MIN: 0x80000000UL | |
| %1 = atomicrmw add i64* %p, i64 -2147483648 seq_cst | |
| ret void | |
| } |