diff options
Diffstat (limited to 'llvm/test/CodeGen/ARM/cmpxchg-O0.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/cmpxchg-O0.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/cmpxchg-O0.ll b/llvm/test/CodeGen/ARM/cmpxchg-O0.ll index 0bf22b05a76..c29050ed680 100644 --- a/llvm/test/CodeGen/ARM/cmpxchg-O0.ll +++ b/llvm/test/CodeGen/ARM/cmpxchg-O0.ll @@ -79,3 +79,24 @@ define { i64, i1 } @test_cmpxchg_64(i64* %addr, i64 %desired, i64 %new) nounwind %res = cmpxchg i64* %addr, i64 %desired, i64 %new seq_cst monotonic ret { i64, i1 } %res } + +define { i64, i1 } @test_nontrivial_args(i64* %addr, i64 %desired, i64 %new) { +; CHECK-LABEL: test_nontrivial_args: +; CHECK: dmb ish +; CHECK-NOT: uxt +; CHECK: [[RETRY:.LBB[0-9]+_[0-9]+]]: +; CHECK: ldrexd [[OLDLO:r[0-9]+]], [[OLDHI:r[0-9]+]], [r0] +; CHECK: cmp [[OLDLO]], {{r[0-9]+}} +; CHECK: sbcs{{(\.w)?}} [[STATUS:r[0-9]+]], [[OLDHI]], {{r[0-9]+}} +; CHECK: bne [[DONE:.LBB[0-9]+_[0-9]+]] +; CHECK: strexd [[STATUS]], {{r[0-9]+}}, {{r[0-9]+}}, [r0] +; CHECK: cmp{{(\.w)?}} [[STATUS]], #0 +; CHECK: bne [[RETRY]] +; CHECK: [[DONE]]: +; CHECK: dmb ish + + %desired1 = add i64 %desired, 1 + %new1 = add i64 %new, 1 + %res = cmpxchg i64* %addr, i64 %desired1, i64 %new1 seq_cst seq_cst + ret { i64, i1 } %res +} |
