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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2014-01-30 04:48:46 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2014-01-30 04:48:46 +0000 |
| commit | 17ca0f8f80b034131d05233076c85e958572ad4d (patch) | |
| tree | f982ef8a73649e51f822f7263c2909473d2e3b0d /test | |
| parent | 09f38a0ef13bf542f7b3f1862d718e33e7de587b (diff) | |
| download | llvm-17ca0f8f80b034131d05233076c85e958572ad4d.tar.gz llvm-17ca0f8f80b034131d05233076c85e958572ad4d.tar.bz2 llvm-17ca0f8f80b034131d05233076c85e958572ad4d.tar.xz | |
Implement SPARCv9 atomic_swap_64 with a pseudo.
The SWAP instruction only exists in a 32-bit variant, but the 64-bit
atomic swap can be implemented in terms of CASX, like the other atomic
rmw primitives.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200453 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/SPARC/atomics.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGen/SPARC/atomics.ll b/test/CodeGen/SPARC/atomics.ll index 6d2b48287c..b10336c980 100644 --- a/test/CodeGen/SPARC/atomics.ll +++ b/test/CodeGen/SPARC/atomics.ll @@ -62,6 +62,15 @@ entry: ret i32 %b } +; CHECK-LABEL: test_swap_i64 +; CHECK: casx [%o1], + +define i64 @test_swap_i64(i64 %a, i64* %ptr) { +entry: + %b = atomicrmw xchg i64* %ptr, i64 42 monotonic + ret i64 %b +} + ; CHECK-LABEL: test_load_add_32 ; CHECK: membar ; CHECK: add [[V:%[gilo][0-7]]], %o1, [[U:%[gilo][0-7]]] |