forked from OSchip/llvm-project
48 lines
1.9 KiB
LLVM
48 lines
1.9 KiB
LLVM
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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN-SAFE -check-prefix=GCN %s
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; RUN: llc -enable-no-nans-fp-math -enable-unsafe-fp-math -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN-NONAN -check-prefix=GCN %s
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; FIXME: Should replace unsafe-fp-math with no signed zeros.
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; GCN-LABEL: {{^}}min_fneg_select_regression_0:
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; GCN-SAFE: v_max_legacy_f32_e64 [[MIN:v[0-9]+]], -1.0, -v0
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; GCN-NONAN: v_max_f32_e64 v{{[0-9]+}}, -v0, -1.0
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define amdgpu_ps float @min_fneg_select_regression_0(float %a, float %b) #0 {
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%fneg.a = fsub float -0.0, %a
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%cmp.a = fcmp ult float %a, 1.0
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%min.a = select i1 %cmp.a, float %fneg.a, float -1.0
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ret float %min.a
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}
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; GCN-LABEL: {{^}}min_fneg_select_regression_posk_0:
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; GCN-SAFE: v_max_legacy_f32_e64 [[MIN:v[0-9]+]], 1.0, -v0
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; GCN-NONAN: v_max_f32_e64 v{{[0-9]+}}, -v0, 1.0
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define amdgpu_ps float @min_fneg_select_regression_posk_0(float %a, float %b) #0 {
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%fneg.a = fsub float -0.0, %a
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%cmp.a = fcmp ult float %a, -1.0
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%min.a = select i1 %cmp.a, float %fneg.a, float 1.0
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ret float %min.a
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}
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; GCN-LABEL: {{^}}max_fneg_select_regression_0:
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; GCN-SAFE: v_min_legacy_f32_e64 [[MIN:v[0-9]+]], -1.0, -v0
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; GCN-NONAN: v_min_f32_e64 [[MIN:v[0-9]+]], -v0, -1.0
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define amdgpu_ps float @max_fneg_select_regression_0(float %a, float %b) #0 {
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%fneg.a = fsub float -0.0, %a
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%cmp.a = fcmp ugt float %a, 1.0
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%min.a = select i1 %cmp.a, float %fneg.a, float -1.0
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ret float %min.a
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}
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; GCN-LABEL: {{^}}max_fneg_select_regression_posk_0:
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; GCN-SAFE: v_min_legacy_f32_e64 [[MIN:v[0-9]+]], 1.0, -v0
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; GCN-NONAN: v_min_f32_e64 [[MIN:v[0-9]+]], -v0, 1.0
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define amdgpu_ps float @max_fneg_select_regression_posk_0(float %a, float %b) #0 {
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%fneg.a = fsub float -0.0, %a
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%cmp.a = fcmp ugt float %a, -1.0
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%min.a = select i1 %cmp.a, float %fneg.a, float 1.0
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ret float %min.a
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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