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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-12-20 18:55:06 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-12-20 18:55:06 +0000 |
| commit | 4c1e9ec00852aea4758ae5a2d44b72c0674d5e96 (patch) | |
| tree | 23fe172f86034182619c1d248e1d80e839b496b4 /llvm/test/CodeGen/AMDGPU/sminmax.ll | |
| parent | 45a540f72fb26fc1cd28325becac78bdacb4a295 (diff) | |
| download | bcm5719-llvm-4c1e9ec00852aea4758ae5a2d44b72c0674d5e96.tar.gz bcm5719-llvm-4c1e9ec00852aea4758ae5a2d44b72c0674d5e96.zip | |
AMDGPU: Don't add same instruction multiple times to worklist
When the instruction is processed the first time, it may be
deleted resulting in crashes. While the new test adds the same
user to the worklist twice, this particular case doesn't crash
but I'm not sure why.
llvm-svn: 290191
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/sminmax.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/sminmax.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/sminmax.ll b/llvm/test/CodeGen/AMDGPU/sminmax.ll index 560d5597baa..83465206e06 100644 --- a/llvm/test/CodeGen/AMDGPU/sminmax.ll +++ b/llvm/test/CodeGen/AMDGPU/sminmax.ll @@ -32,6 +32,20 @@ define void @v_abs_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %src) nounwind ret void } +; GCN-LABEL: {{^}}v_abs_i32_repeat_user: +; GCN: v_sub_i32_e32 [[NEG:v[0-9]+]], vcc, 0, [[SRC:v[0-9]+]] +; GCN: v_max_i32_e32 [[MAX:v[0-9]+]], [[NEG]], [[SRC]] +; GCN: v_mul_lo_i32 v{{[0-9]+}}, [[MAX]], [[MAX]] +define void @v_abs_i32_repeat_user(i32 addrspace(1)* %out, i32 addrspace(1)* %src) nounwind { + %val = load i32, i32 addrspace(1)* %src, align 4 + %neg = sub i32 0, %val + %cond = icmp sgt i32 %val, %neg + %res = select i1 %cond, i32 %val, i32 %neg + %mul = mul i32 %res, %res + store i32 %mul, i32 addrspace(1)* %out, align 4 + ret void +} + ; FUNC-LABEL: {{^}}s_abs_v2i32: ; GCN: s_abs_i32 ; GCN: s_abs_i32 |
