1; RUN: llc < %s -march=x86-64 -verify-machineinstrs | FileCheck %s 2 3; rdar://9692967 4 5define void @t1(i64* %p, i32 %b) nounwind { 6entry: 7 %p.addr = alloca i64*, align 8 8 store i64* %p, i64** %p.addr, align 8 9 %tmp = load i64*, i64** %p.addr, align 8 10; CHECK-LABEL: t1: 11; CHECK: movl $2147483648, %eax 12; CHECK: lock 13; CHECK-NEXT: orq %r{{.*}}, (%r{{.*}}) 14 %0 = atomicrmw or i64* %tmp, i64 2147483648 seq_cst 15 ret void 16} 17 18define void @t2(i64* %p, i32 %b) nounwind { 19entry: 20 %p.addr = alloca i64*, align 8 21 store i64* %p, i64** %p.addr, align 8 22 %tmp = load i64*, i64** %p.addr, align 8 23; CHECK-LABEL: t2: 24; CHECK: lock 25; CHECK-NEXT: orq $2147483644, (%r{{.*}}) 26 %0 = atomicrmw or i64* %tmp, i64 2147483644 seq_cst 27 ret void 28} 29