33 lines
1.3 KiB
LLVM
33 lines
1.3 KiB
LLVM
; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tahiti < %s
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; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tonga < %s
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; This works because promote allocas pass replaces these with LDS atomics.
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; Private atomics have no real use, but at least shouldn't crash on it.
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define amdgpu_kernel void @atomicrmw_private(i32 addrspace(1)* %out, i32 %in) nounwind {
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entry:
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%tmp = alloca [2 x i32]
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%tmp1 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 0
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%tmp2 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 1
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store i32 0, i32* %tmp1
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store i32 1, i32* %tmp2
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%tmp3 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 %in
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%tmp4 = atomicrmw add i32* %tmp3, i32 7 acq_rel
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store i32 %tmp4, i32 addrspace(1)* %out
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ret void
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}
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define amdgpu_kernel void @cmpxchg_private(i32 addrspace(1)* %out, i32 %in) nounwind {
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entry:
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%tmp = alloca [2 x i32]
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%tmp1 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 0
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%tmp2 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 1
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store i32 0, i32* %tmp1
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store i32 1, i32* %tmp2
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%tmp3 = getelementptr inbounds [2 x i32], [2 x i32]* %tmp, i32 0, i32 %in
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%tmp4 = cmpxchg i32* %tmp3, i32 0, i32 1 acq_rel monotonic
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%val = extractvalue { i32, i1 } %tmp4, 0
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store i32 %val, i32 addrspace(1)* %out
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ret void
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}
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