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Diffstat (limited to 'test/CodeGen/X86/membarrier.ll')
| -rw-r--r-- | test/CodeGen/X86/membarrier.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/membarrier.ll b/test/CodeGen/X86/membarrier.ll new file mode 100644 index 0000000000..42f8ef5ff0 --- /dev/null +++ b/test/CodeGen/X86/membarrier.ll @@ -0,0 +1,15 @@ +; RUN: llc < %s -march=x86-64 -mattr=-sse -O0 +; PR9675 + +define i32 @t() { +entry: + %i = alloca i32, align 4 + store i32 1, i32* %i, align 4 + call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) + %0 = call i32 @llvm.atomic.load.sub.i32.p0i32(i32* %i, i32 1) + call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) + ret i32 0 +} + +declare i32 @llvm.atomic.load.sub.i32.p0i32(i32* nocapture, i32) nounwind +declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind |