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Add some tests for NVPTX lowering of cmpxchg

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213586 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Bendersky 2014-07-21 22:54:44 +00:00
parent 9da65a8644
commit 07efe87198
1 changed files with 14 additions and 0 deletions
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14
test/CodeGen/NVPTX/atomics.ll
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@ -166,3 +166,17 @@ define float @atomic_add_f32_addrspace3(float addrspace(3)* %addr, float %val) {
%ret = call float @llvm.nvvm.atomic.load.add.f32.p3f32(float addrspace(3)* %addr, float %val)
ret float %ret
}
; CHECK-LABEL: atomic_cmpxchg_i32
define i32 @atomic_cmpxchg_i32(i32* %addr, i32 %cmp, i32 %new) {
; CHECK: atom.cas.b32
%pairold = cmpxchg i32* %addr, i32 %cmp, i32 %new seq_cst seq_cst
ret i32 %new
}
; CHECK-LABEL: atomic_cmpxchg_i64
define i64 @atomic_cmpxchg_i64(i64* %addr, i64 %cmp, i64 %new) {
; CHECK: atom.cas.b64
%pairold = cmpxchg i64* %addr, i64 %cmp, i64 %new seq_cst seq_cst
ret i64 %new
}