1 ; RUN: llc < %s -O2 -march=x86-64 -verify-machineinstrs | FileCheck %s 2 3 define void @pr21099(i64* %p) { 4 ; CHECK-LABEL: pr21099 5 ; CHECK: lock addq $-2147483648 6 ; This number is INT32_MIN: 0x80000000UL 7 %1 = atomicrmw add i64* %p, i64 -2147483648 seq_cst 8 ret void 9 } 10
