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| author | Eric Christopher <echristo@apple.com> | 2011-06-30 00:48:30 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2011-06-30 00:48:30 +0000 |
| commit | 5d8aa345dd8f92d572a3c639ee7c6f5a7a932384 (patch) | |
| tree | 455cc28a8ec257902ffd30197f27c506ad5ae99e /test/CodeGen/X86/atomic-or.ll | |
| parent | 9287a6eef336585628a55e1f33e1e3ea9d7f81cf (diff) | |
| download | llvm-5d8aa345dd8f92d572a3c639ee7c6f5a7a932384.tar.gz llvm-5d8aa345dd8f92d572a3c639ee7c6f5a7a932384.tar.bz2 llvm-5d8aa345dd8f92d572a3c639ee7c6f5a7a932384.tar.xz | |
Fix a small thinko for constant i64 lock/orq optimization where we
we didn't have an opcode for 64-bit constant or expressions.
Fixes rdar://9692967
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134121 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/atomic-or.ll')
| -rw-r--r-- | test/CodeGen/X86/atomic-or.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/CodeGen/X86/atomic-or.ll b/test/CodeGen/X86/atomic-or.ll new file mode 100644 index 0000000000..cd622908ac --- /dev/null +++ b/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 |