12bcd6339d
If the gather node includes ordered loads only partially (not the whole node consists of loads) and the other gathered scalar are not loads, and no other dependency from other nodes is found, we still can improve the cost of gather, if take into account the fact that these loads still can be vectorized.
50 lines
2.5 KiB
LLVM
50 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
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; RUN: opt < %s -passes=slp-vectorizer -S -mtriple=x86_64-unknown-linux-gnu -mcpu=skylake-avx512 -pass-remarks-output=%t | FileCheck %s
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; RUN: FileCheck --input-file=%t --check-prefix=YAML %s
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; YAML-LABEL: --- !Passed
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; YAML-NEXT: Pass: slp-vectorizer
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; YAML-NEXT: Name: VectorizedList
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; YAML-NEXT: Function: test
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: 'SLP vectorized with cost '
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; YAML-NEXT: - Cost: '-4'
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; YAML-NEXT: - String: ' and with tree size '
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; YAML-NEXT: - TreeSize: '4'
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; YAML-LABEL: --- !Passed
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; YAML-NEXT: Pass: slp-vectorizer
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; YAML-NEXT: Name: VectorizedList
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; YAML-NEXT: Function: test
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: 'SLP vectorized with cost '
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; YAML-NEXT: - Cost: '-2'
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; YAML-NEXT: - String: ' and with tree size '
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; YAML-NEXT: - TreeSize: '2'
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define <4 x float> @test(ptr %x, float %v, float %a) {
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; CHECK-LABEL: define <4 x float> @test(
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; CHECK-SAME: ptr [[X:%.*]], float [[V:%.*]], float [[A:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[TMP1:%.*]] = load <2 x float>, ptr [[X]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = insertelement <4 x float> poison, float [[A]], i32 0
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; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <4 x float> [[TMP2]], <4 x float> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP4:%.*]] = insertelement <4 x float> poison, float [[V]], i32 0
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; CHECK-NEXT: [[TMP5:%.*]] = shufflevector <2 x float> [[TMP1]], <2 x float> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
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; CHECK-NEXT: [[TMP6:%.*]] = shufflevector <4 x float> [[TMP4]], <4 x float> [[TMP5]], <4 x i32> <i32 0, i32 poison, i32 4, i32 5>
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; CHECK-NEXT: [[TMP7:%.*]] = shufflevector <4 x float> [[TMP6]], <4 x float> poison, <4 x i32> <i32 0, i32 0, i32 2, i32 3>
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; CHECK-NEXT: [[TMP8:%.*]] = fadd <4 x float> [[TMP3]], [[TMP7]]
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; CHECK-NEXT: ret <4 x float> [[TMP8]]
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;
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%gep1 = getelementptr inbounds <4 x float>, ptr %x, i64 0, i64 1
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%x0 = load float, ptr %x, align 4
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%x1 = load float, ptr %gep1, align 4
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%add1 = fadd float %a, %v
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%add2 = fadd float %a, %v
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%add3 = fadd float %a, %x0
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%add4 = fadd float %a, %x1
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%i0 = insertelement <4 x float> undef, float %add1, i32 0
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%i1 = insertelement <4 x float> %i0, float %add2, i32 1
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%i2 = insertelement <4 x float> %i1, float %add3, i32 2
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%i3 = insertelement <4 x float> %i2, float %add4, i32 3
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ret <4 x float> %i3
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}
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