diff options
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/rcp-pattern.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/rcp-pattern.ll | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/rcp-pattern.ll b/llvm/test/CodeGen/AMDGPU/rcp-pattern.ll index 27a88f7b59e..9eb76eb290d 100644 --- a/llvm/test/CodeGen/AMDGPU/rcp-pattern.ll +++ b/llvm/test/CodeGen/AMDGPU/rcp-pattern.ll @@ -76,8 +76,22 @@ define void @rcp_fabs_pat_f32(float addrspace(1)* %out, float %src) #0 { ret void } -; FIXME: fneg folded into constant 1 +; FUNC-LABEL: {{^}}neg_rcp_pat_f32: +; GCN: s_load_dword [[SRC:s[0-9]+]] +; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -[[SRC]] +; GCN: buffer_store_dword [[RCP]] + +; EG: RECIP_IEEE +define void @neg_rcp_pat_f32(float addrspace(1)* %out, float %src) #0 { + %rcp = fdiv float -1.0, %src + store float %rcp, float addrspace(1)* %out, align 4 + ret void +} + ; FUNC-LABEL: {{^}}rcp_fabs_fneg_pat_f32: +; GCN: s_load_dword [[SRC:s[0-9]+]] +; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -|[[SRC]]| +; GCN: buffer_store_dword [[RCP]] define void @rcp_fabs_fneg_pat_f32(float addrspace(1)* %out, float %src) #0 { %src.fabs = call float @llvm.fabs.f32(float %src) %src.fabs.fneg = fsub float -0.0, %src.fabs @@ -86,8 +100,27 @@ define void @rcp_fabs_fneg_pat_f32(float addrspace(1)* %out, float %src) #0 { ret void } +; FUNC-LABEL: {{^}}rcp_fabs_fneg_pat_multi_use_f32: +; GCN: s_load_dword [[SRC:s[0-9]+]] +; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -|[[SRC]]| +; GCN: buffer_store_dword [[RCP]] + +; GCN: v_mul_f32_e64 [[MUL:v[0-9]+]], [[SRC]], -|[[SRC]]| +; GCN: buffer_store_dword [[MUL]] +define void @rcp_fabs_fneg_pat_multi_use_f32(float addrspace(1)* %out, float %src) #0 { + %src.fabs = call float @llvm.fabs.f32(float %src) + %src.fabs.fneg = fsub float -0.0, %src.fabs + %rcp = fdiv float 1.0, %src.fabs.fneg + store volatile float %rcp, float addrspace(1)* %out, align 4 + + %other = fmul float %src, %src.fabs.fneg + store volatile float %other, float addrspace(1)* %out, align 4 + ret void +} + declare float @llvm.fabs.f32(float) #1 +declare float @llvm.sqrt.f32(float) #1 attributes #0 = { nounwind "unsafe-fp-math"="false" } attributes #1 = { nounwind readnone } |
