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[VectorCombine] add tests for scalar fneg with insert/extract; NFC
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llvm/test/Transforms/VectorCombine/X86/extract-fneg-insert.ll
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| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | ||
| ; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=SSE2 | FileCheck %s --check-prefixes=CHECK,SSE | ||
| ; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=AVX2 | FileCheck %s --check-prefixes=CHECK,AVX | ||
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| declare void @use(float) | ||
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| define <4 x float> @ext0_v4f32(<4 x float> %x, <4 x float> %y) { | ||
| ; CHECK-LABEL: @ext0_v4f32( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <4 x float> [[X:%.*]], i32 0 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg float [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <4 x float> [[Y:%.*]], float [[N]], i32 0 | ||
| ; CHECK-NEXT: ret <4 x float> [[R]] | ||
| ; | ||
| %e = extractelement <4 x float> %x, i32 0 | ||
| %n = fneg float %e | ||
| %r = insertelement <4 x float> %y, float %n, i32 0 | ||
| ret <4 x float> %r | ||
| } | ||
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| ; Eliminating extract/insert is profitable. | ||
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| define <4 x float> @ext2_v4f32(<4 x float> %x, <4 x float> %y) { | ||
| ; CHECK-LABEL: @ext2_v4f32( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <4 x float> [[X:%.*]], i32 2 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg float [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <4 x float> [[Y:%.*]], float [[N]], i32 2 | ||
| ; CHECK-NEXT: ret <4 x float> [[R]] | ||
| ; | ||
| %e = extractelement <4 x float> %x, i32 2 | ||
| %n = fneg float %e | ||
| %r = insertelement <4 x float> %y, float %n, i32 2 | ||
| ret <4 x float> %r | ||
| } | ||
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| ; Eliminating extract/insert is still profitable. Flags propagate. | ||
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| define <2 x double> @ext1_v2f64(<2 x double> %x, <2 x double> %y) { | ||
| ; CHECK-LABEL: @ext1_v2f64( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <2 x double> [[X:%.*]], i32 1 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg nsz double [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <2 x double> [[Y:%.*]], double [[N]], i32 1 | ||
| ; CHECK-NEXT: ret <2 x double> [[R]] | ||
| ; | ||
| %e = extractelement <2 x double> %x, i32 1 | ||
| %n = fneg nsz double %e | ||
| %r = insertelement <2 x double> %y, double %n, i32 1 | ||
| ret <2 x double> %r | ||
| } | ||
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| define <8 x float> @ext7_v8f32(<8 x float> %x, <8 x float> %y) { | ||
| ; CHECK-LABEL: @ext7_v8f32( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <8 x float> [[X:%.*]], i32 7 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg float [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <8 x float> [[Y:%.*]], float [[N]], i32 7 | ||
| ; CHECK-NEXT: ret <8 x float> [[R]] | ||
| ; | ||
| %e = extractelement <8 x float> %x, i32 7 | ||
| %n = fneg float %e | ||
| %r = insertelement <8 x float> %y, float %n, i32 7 | ||
| ret <8 x float> %r | ||
| } | ||
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| define <8 x float> @ext7_v8f32_use1(<8 x float> %x, <8 x float> %y) { | ||
| ; CHECK-LABEL: @ext7_v8f32_use1( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <8 x float> [[X:%.*]], i32 5 | ||
| ; CHECK-NEXT: call void @use(float [[E]]) | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg float [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <8 x float> [[Y:%.*]], float [[N]], i32 5 | ||
| ; CHECK-NEXT: ret <8 x float> [[R]] | ||
| ; | ||
| %e = extractelement <8 x float> %x, i32 5 | ||
| call void @use(float %e) | ||
| %n = fneg float %e | ||
| %r = insertelement <8 x float> %y, float %n, i32 5 | ||
| ret <8 x float> %r | ||
| } | ||
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| define <8 x float> @ext7_v8f32_use2(<8 x float> %x, <8 x float> %y) { | ||
| ; CHECK-LABEL: @ext7_v8f32_use2( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <8 x float> [[X:%.*]], i32 3 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg float [[E]] | ||
| ; CHECK-NEXT: call void @use(float [[N]]) | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <8 x float> [[Y:%.*]], float [[N]], i32 3 | ||
| ; CHECK-NEXT: ret <8 x float> [[R]] | ||
| ; | ||
| %e = extractelement <8 x float> %x, i32 3 | ||
| %n = fneg float %e | ||
| call void @use(float %n) | ||
| %r = insertelement <8 x float> %y, float %n, i32 3 | ||
| ret <8 x float> %r | ||
| } | ||
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| define <2 x double> @ext_index_var_v2f64(<2 x double> %x, <2 x double> %y, i32 %index) { | ||
| ; CHECK-LABEL: @ext_index_var_v2f64( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <2 x double> [[X:%.*]], i32 [[INDEX:%.*]] | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg nsz double [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <2 x double> [[Y:%.*]], double [[N]], i32 [[INDEX]] | ||
| ; CHECK-NEXT: ret <2 x double> [[R]] | ||
| ; | ||
| %e = extractelement <2 x double> %x, i32 %index | ||
| %n = fneg nsz double %e | ||
| %r = insertelement <2 x double> %y, double %n, i32 %index | ||
| ret <2 x double> %r | ||
| } | ||
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| define <2 x double> @ext1_v2f64_ins0(<2 x double> %x, <2 x double> %y) { | ||
| ; CHECK-LABEL: @ext1_v2f64_ins0( | ||
| ; CHECK-NEXT: [[E:%.*]] = extractelement <2 x double> [[X:%.*]], i32 1 | ||
| ; CHECK-NEXT: [[N:%.*]] = fneg nsz double [[E]] | ||
| ; CHECK-NEXT: [[R:%.*]] = insertelement <2 x double> [[Y:%.*]], double [[N]], i32 0 | ||
| ; CHECK-NEXT: ret <2 x double> [[R]] | ||
| ; | ||
| %e = extractelement <2 x double> %x, i32 1 | ||
| %n = fneg nsz double %e | ||
| %r = insertelement <2 x double> %y, double %n, i32 0 | ||
| ret <2 x double> %r | ||
| } |