diff options
Diffstat (limited to 'test/CodeGen/AArch64/arm64-atomic.ll')
| -rw-r--r-- | test/CodeGen/AArch64/arm64-atomic.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-atomic.ll b/test/CodeGen/AArch64/arm64-atomic.ll index 9136fb6271b5..0824bd881a95 100644 --- a/test/CodeGen/AArch64/arm64-atomic.ll +++ b/test/CodeGen/AArch64/arm64-atomic.ll @@ -14,6 +14,22 @@ define i32 @val_compare_and_swap(i32* %p, i32 %cmp, i32 %new) #0 { ret i32 %val } +define i32 @val_compare_and_swap_from_load(i32* %p, i32 %cmp, i32* %pnew) #0 { +; CHECK-LABEL: val_compare_and_swap_from_load: +; CHECK-NEXT: ldr [[NEW:w[0-9]+]], [x2] +; CHECK-NEXT: [[LABEL:.?LBB[0-9]+_[0-9]+]]: +; CHECK-NEXT: ldaxr [[RESULT:w[0-9]+]], [x0] +; CHECK-NEXT: cmp [[RESULT]], w1 +; CHECK-NEXT: b.ne [[LABEL2:.?LBB[0-9]+_[0-9]+]] +; CHECK-NEXT: stxr [[SCRATCH_REG:w[0-9]+]], [[NEW]], [x0] +; CHECK-NEXT: cbnz [[SCRATCH_REG]], [[LABEL]] +; CHECK-NEXT: [[LABEL2]]: + %new = load i32, i32* %pnew + %pair = cmpxchg i32* %p, i32 %cmp, i32 %new acquire acquire + %val = extractvalue { i32, i1 } %pair, 0 + ret i32 %val +} + define i32 @val_compare_and_swap_rel(i32* %p, i32 %cmp, i32 %new) #0 { ; CHECK-LABEL: val_compare_and_swap_rel: ; CHECK-NEXT: [[LABEL:.?LBB[0-9]+_[0-9]+]]: |