diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/X86/atomic-or.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/atomic-or.ll b/llvm/test/CodeGen/X86/atomic-or.ll new file mode 100644 index 00000000000..cd622908aca --- /dev/null +++ b/llvm/test/CodeGen/X86/atomic-or.ll @@ -0,0 +1,18 @@ +; RUN: llc < %s -march=x86-64 | FileCheck %s + +; rdar://9692967 + +define void @do_the_sync(i64* %p, i32 %b) nounwind { +entry: + %p.addr = alloca i64*, align 8 + store i64* %p, i64** %p.addr, align 8 + %tmp = load i64** %p.addr, align 8 + call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) +; CHECK: lock +; CHECK-NEXT: orq $2147483648 + %0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483648) + call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) + ret void +} +declare i64 @llvm.atomic.load.or.i64.p0i64(i64* nocapture, i64) nounwind +declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind |
