| Eric Christopher | 5d8aa34 | 2011-06-30 00:48:30 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -march=x86-64 | FileCheck %s |
| 2 | |
| 3 | ; rdar://9692967 |
| 4 | |
| 5 | define void @do_the_sync(i64* %p, i32 %b) nounwind { |
| 6 | entry: |
| 7 | %p.addr = alloca i64*, align 8 |
| 8 | store i64* %p, i64** %p.addr, align 8 |
| 9 | %tmp = load i64** %p.addr, align 8 |
| 10 | call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) |
| 11 | ; CHECK: lock |
| 12 | ; CHECK-NEXT: orq $2147483648 |
| 13 | %0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483648) |
| 14 | call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) |
| 15 | ret void |
| 16 | } |
| 17 | declare i64 @llvm.atomic.load.or.i64.p0i64(i64* nocapture, i64) nounwind |
| 18 | declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind |