llvm/test/Transforms/SLPVectorizer/X86/scatter-vectorize-reorder.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu -mcpu=cascadelake < %s | FileCheck %s

define void @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[ARRAYIDX10_I_I86:%.*]] = getelementptr inbounds float, ptr undef, i64 2
; CHECK-NEXT:    [[ARRAYIDX21_I:%.*]] = getelementptr inbounds [4 x float], ptr undef, i64 2
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[TMP2:%.*]] = load float, ptr [[ARRAYIDX10_I_I86]], align 4
; CHECK-NEXT:    [[TMP0:%.*]] = load <2 x float>, ptr undef, align 4
; CHECK-NEXT:    [[TMP3:%.*]] = load <2 x float>, ptr undef, align 4
; CHECK-NEXT:    [[TMP1:%.*]] = fsub <2 x float> zeroinitializer, [[TMP0]]
; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x float> <float 0.000000e+00, float poison>, float [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP6:%.*]] = insertelement <2 x float> <float poison, float 0.000000e+00>, float [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = call <2 x float> @llvm.fmuladd.v2f32(<2 x float> [[TMP4]], <2 x float> [[TMP3]], <2 x float> [[TMP6]])
; CHECK-NEXT:    br i1 false, label [[BB2:%.*]], label [[BB3:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    [[TMP8:%.*]] = fmul <2 x float> [[TMP7]], zeroinitializer
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    [[TMP9:%.*]] = phi <2 x float> [ [[TMP8]], [[BB2]] ], [ zeroinitializer, [[BB1]] ]
; CHECK-NEXT:    [[TMP10:%.*]] = shufflevector <2 x float> [[TMP9]], <2 x float> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT:    [[TMP11:%.*]] = fadd <2 x float> [[TMP1]], [[TMP10]]
; CHECK-NEXT:    [[TMP12:%.*]] = fadd <2 x float> [[TMP11]], zeroinitializer
; CHECK-NEXT:    [[TMP13:%.*]] = fsub <2 x float> [[TMP12]], zeroinitializer
; CHECK-NEXT:    [[TMP14:%.*]] = fsub <2 x float> [[TMP13]], zeroinitializer
; CHECK-NEXT:    store <2 x float> [[TMP14]], ptr [[ARRAYIDX21_I]], align 16
; CHECK-NEXT:    ret void
;
entry:
  %arrayidx10.i.i86 = getelementptr inbounds float, ptr undef, i64 2
  %arrayidx6.i66.i = getelementptr inbounds float, ptr undef, i64 1
  %arrayidx21.i = getelementptr inbounds [4 x float], ptr undef, i64 2
  %arrayidx6.i109.i = getelementptr inbounds [4 x float], ptr undef, i64 2, i64 1
  br label %bb1

bb1:
  %0 = load float, ptr undef, align 4
  %sub.i71.i = fsub float 0.000000e+00, %0
  %1 = load float, ptr %arrayidx6.i66.i, align 4
  %sub5.i74.i = fsub float 0.000000e+00, %1
  %2 = load float, ptr %arrayidx10.i.i86, align 4
  %3 = call float @llvm.fmuladd.f32(float %1, float %2, float 0.000000e+00)
  %4 = load float, ptr undef, align 4
  %5 = call float @llvm.fmuladd.f32(float 0.000000e+00, float %4, float %2)
  br i1 false, label %bb2, label %bb3

bb2:
  %mul.i95 = fmul float %3, 0.000000e+00
  %mul3.i96 = fmul float %5, 0.000000e+00
  br label %bb3

bb3:
  %vddir.sroa.8.0.i = phi float [ %mul3.i96, %bb2 ], [ 0.000000e+00, %bb1 ]
  %vddir.sroa.0.0.i = phi float [ %mul.i95, %bb2 ], [ 0.000000e+00, %bb1 ]
  %add.i.i = fadd float %sub.i71.i, %vddir.sroa.0.0.i
  %add5.i.i = fadd float %sub5.i74.i, %vddir.sroa.8.0.i
  %add.i105.i = fadd float %add.i.i, 0.000000e+00
  %add5.i108.i = fadd float %add5.i.i, 0.000000e+00
  %sub.i114.i = fsub float %add.i105.i, 0.000000e+00
  %sub4.i.i = fsub float %add5.i108.i, 0.000000e+00
  %sub.i118.i = fsub float %sub.i114.i, 0.000000e+00
  store float %sub.i118.i, ptr %arrayidx21.i, align 16
  %sub4.i121.i = fsub float %sub4.i.i, 0.000000e+00
  store float %sub4.i121.i, ptr %arrayidx6.i109.i, align 4
  ret void
}

declare float @llvm.fmuladd.f32(float, float, float)