llvm/test/Transforms/SLPVectorizer/X86/reorder-phi-operand.ll

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

define ptr @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[GREEN_I:%.*]] = getelementptr inbounds float, ptr null, i32 6
; CHECK-NEXT:    [[TMP0:%.*]] = load <2 x float>, ptr [[GREEN_I]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = fpext <2 x float> [[TMP0]] to <2 x double>
; CHECK-NEXT:    br label [[BODY:%.*]]
; CHECK:       body:
; CHECK-NEXT:    [[TMP2:%.*]] = phi <2 x double> [ [[TMP5:%.*]], [[BODY]] ], [ [[TMP1]], [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[TMP3:%.*]] = load <2 x i16>, ptr null, align 2
; CHECK-NEXT:    [[TMP4:%.*]] = uitofp <2 x i16> [[TMP3]] to <2 x double>
; CHECK-NEXT:    [[SHUFFLE:%.*]] = shufflevector <2 x double> [[TMP4]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT:    [[TMP5]] = call <2 x double> @llvm.fmuladd.v2f64(<2 x double> zeroinitializer, <2 x double> [[SHUFFLE]], <2 x double> [[TMP2]])
; CHECK-NEXT:    br label [[BODY]]
;
entry:
  %green.i = getelementptr inbounds float, ptr null, i32 6
  %blue.i = getelementptr inbounds float, ptr null, i32 7
  %0 = load float, ptr %green.i, align 4
  %conv197 = fpext float %0 to double
  %1 = load float, ptr %blue.i, align 8
  %conv199 = fpext float %1 to double
  br label %body

body:
  %phi1 = phi double [ %3, %body ], [ %conv197, %entry ]
  %phi2 = phi double [ %5, %body ], [ %conv199, %entry ]
  %green = getelementptr inbounds i16, ptr null, i32 1
  %2 = load i16, ptr %green, align 2
  %conv1 = uitofp i16 %2 to double
  %3 = call double @llvm.fmuladd.f64(double 0.000000e+00, double %conv1, double %phi1)
  %4 = load i16, ptr null, align 2
  %conv2 = uitofp i16 %4 to double
  %5 = call double @llvm.fmuladd.f64(double 0.000000e+00, double %conv2, double %phi2)
  br label %body
}

declare double @llvm.fmuladd.f64(double, double, double)

define void @test1(ptr %agg.result, ptr %this) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[RETURN:%.*]], label [[LOR_LHS_FALSE:%.*]]
; CHECK:       lor.lhs.false:
; CHECK-NEXT:    br i1 false, label [[RETURN]], label [[IF_END:%.*]]
; CHECK:       if.end:
; CHECK-NEXT:    [[B_I:%.*]] = getelementptr inbounds float, ptr [[THIS:%.*]], i32 1
; CHECK-NEXT:    [[TMP0:%.*]] = load <2 x float>, ptr [[B_I]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = fadd <2 x float> [[TMP0]], zeroinitializer
; CHECK-NEXT:    br label [[RETURN]]
; CHECK:       return:
; CHECK-NEXT:    [[TMP2:%.*]] = phi <2 x float> [ [[TMP1]], [[IF_END]] ], [ <float 1.000000e+00, float 0.000000e+00>, [[LOR_LHS_FALSE]] ], [ <float 1.000000e+00, float 0.000000e+00>, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[C_I_I_I:%.*]] = getelementptr inbounds float, ptr [[AGG_RESULT:%.*]], i32 2
; CHECK-NEXT:    [[SHUFFLE:%.*]] = shufflevector <2 x float> [[TMP2]], <2 x float> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT:    store <2 x float> [[SHUFFLE]], ptr [[C_I_I_I]], align 4
; CHECK-NEXT:    ret void
;
entry:
  br i1 false, label %return, label %lor.lhs.false

lor.lhs.false:
  br i1 false, label %return, label %if.end

if.end:
  %c.i = getelementptr inbounds float, ptr %this, i32 2
  %0 = load float, ptr %c.i, align 4
  %add.i = fadd float %0, 0.000000e+00
  %b.i = getelementptr inbounds float, ptr %this, i32 1
  %1 = load float, ptr %b.i, align 4
  %add2.i = fadd float %1, 0.000000e+00
  br label %return

return:
  %add.i.sink = phi float [ %add.i, %if.end ], [ 0.000000e+00, %lor.lhs.false ], [ 0.000000e+00, %entry ]
  %add2.i.sink = phi float [ %add2.i, %if.end ], [ 1.000000e+00, %lor.lhs.false ], [ 1.000000e+00, %entry ]
  %c.i.i.i = getelementptr inbounds float, ptr %agg.result, i32 2
  store float %add.i.sink, ptr %c.i.i.i, align 4
  %d.i.i.i = getelementptr inbounds float, ptr %agg.result, i32 3
  store float %add2.i.sink, ptr %d.i.i.i, align 4
  ret void
}

; Here PHIs have mutual uses of each other. Reordering one requires reordering the other.
define void @test2(ptr %p1, ptr %p2) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[A1:%.*]] = getelementptr inbounds ptr, ptr [[P1:%.*]], i32 0
; CHECK-NEXT:    [[B1:%.*]] = getelementptr inbounds ptr, ptr [[P1]], i32 4
; CHECK-NEXT:    [[TMP0:%.*]] = load <2 x double>, ptr [[A1]], align 8
; CHECK-NEXT:    [[TMP1:%.*]] = load <2 x double>, ptr [[B1]], align 8
; CHECK-NEXT:    [[TMP2:%.*]] = fmul fast <2 x double> <double 1.000000e+01, double 1.000000e-01>, [[TMP0]]
; CHECK-NEXT:    [[TMP3:%.*]] = fmul fast <2 x double> <double 1.100000e+01, double 1.100000e+00>, [[TMP1]]
; CHECK-NEXT:    [[TMP4:%.*]] = fsub fast <2 x double> <double 1.000000e+01, double 1.000000e-01>, [[TMP3]]
; CHECK-NEXT:    [[TMP5:%.*]] = fmul fast <2 x double> [[TMP4]], <double 2.000000e+00, double 2.100000e+00>
; CHECK-NEXT:    [[TMP6:%.*]] = fadd fast <2 x double> [[TMP2]], <double 1.000000e+01, double 1.000000e-01>
; CHECK-NEXT:    [[TMP7:%.*]] = fadd fast <2 x double> [[TMP6]], [[TMP5]]
; CHECK-NEXT:    [[TMP8:%.*]] = fmul fast <2 x double> [[TMP7]], <double 3.000000e+00, double 3.100000e+00>
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[TMP9:%.*]] = fadd fast <2 x double> <double 4.000000e+00, double 4.100000e+00>, [[TMP8]]
; CHECK-NEXT:    [[TMP10:%.*]] = fadd fast <2 x double> [[TMP9]], <double 2.000000e+00, double 2.100000e+00>
; CHECK-NEXT:    [[TMP11:%.*]] = fadd fast <2 x double> [[TMP10]], <double 3.000000e+00, double 3.100000e+00>
; CHECK-NEXT:    [[TMP12:%.*]] = shufflevector <2 x double> [[TMP11]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT:    br label [[BB2:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    [[TMP13:%.*]] = phi <2 x double> [ [[TMP12]], [[BB1]] ], [ [[TMP15:%.*]], [[BB6:%.*]] ]
; CHECK-NEXT:    [[X0:%.*]] = getelementptr inbounds double, ptr [[P2:%.*]], i32 0
; CHECK-NEXT:    [[TMP14:%.*]] = load <2 x double>, ptr [[X0]], align 8
; CHECK-NEXT:    br i1 poison, label [[BB3:%.*]], label [[BB6]]
; CHECK:       bb3:
; CHECK-NEXT:    br i1 poison, label [[BB5:%.*]], label [[BB4:%.*]]
; CHECK:       bb4:
; CHECK-NEXT:    br label [[BB6]]
; CHECK:       bb5:
; CHECK-NEXT:    br label [[BB6]]
; CHECK:       bb6:
; CHECK-NEXT:    [[TMP15]] = phi <2 x double> [ [[TMP13]], [[BB2]] ], [ [[TMP14]], [[BB4]] ], [ [[TMP14]], [[BB5]] ]
; CHECK-NEXT:    br label [[BB2]]
;
entry:
  %a1 = getelementptr inbounds ptr, ptr %p1, i32 0
  %a2 = getelementptr inbounds ptr, ptr %p1, i32 1
  %b2 = getelementptr inbounds ptr, ptr %p1, i32 5
  %lda1 = load double, ptr %a1, align 8
  %lda2 = load double, ptr %a2, align 8
  %b1 = getelementptr inbounds ptr, ptr %p1, i32 4
  %ldb1 = load double, ptr %b1, align 8
  %ldb2 = load double, ptr %b2, align 8
  %mul0.1 = fmul fast double 0.1, %lda2
  %mul1.1 = fmul fast double 1.1, %ldb2
  %sub0.1 = fsub fast double 0.1, %mul1.1
  %mul2.1 = fmul fast double %sub0.1, 2.1
  %add0.1 = fadd fast double %mul0.1, 0.1
  %add1.1 = fadd fast double %add0.1, %mul2.1
  %mul3.1 = fmul fast double %add1.1, 3.1
  %mul0.0 = fmul fast double 10.0, %lda1
  %mul1.0 = fmul fast double 11.0, %ldb1
  %sub0.0 = fsub fast double 10.0, %mul1.0
  %mul2.0 = fmul fast double %sub0.0, 2.0
  %add0.0 = fadd fast double %mul0.0, 10.0
  %add1.0 = fadd fast double %add0.0, %mul2.0
  %mul3.0 = fmul fast double 3.0, %add1.0
  br label %bb1

bb1:
  %add4.1 = fadd fast double 4.1, %mul3.1
  %add2.1 = fadd fast double %add4.1, 2.1
  %add3.1 = fadd fast double %add2.1, 3.1
  %add4.0 = fadd fast double 4.0, %mul3.0
  %add2.0 = fadd fast double %add4.0, 2.0
  %add3.0 = fadd fast double %add2.0, 3.0
  br label %bb2

bb2:                                    ; preds = %bb6, %bb1
  %phi0.0 = phi double [ %add3.1, %bb1 ], [ %phi1.0, %bb6 ]
  %phi0.1 = phi double [ %add3.0, %bb1 ], [ %phi1.1, %bb6 ]
  %x0 = getelementptr inbounds double, ptr %p2, i32 0
  %i0 = load double, ptr %x0, align 8
  %x1 = getelementptr inbounds double, ptr %p2, i32 1
  %i1 = load double, ptr %x1, align 8
  br i1 poison, label %bb3, label %bb6

bb3:                                   ; preds = %bb2
  br i1 poison, label %bb5, label %bb4

bb4:                                  ; preds = %bb3
  br label %bb6

bb5:                                  ; preds = %bb3
  br label %bb6

bb6:                                        ; preds = %bb5, %bb4, %bb3
  %phi1.0 = phi double [ %phi0.0, %bb2 ], [ %i0, %bb4 ], [ %i0, %bb5 ]
  %phi1.1 = phi double [ %phi0.1, %bb2 ], [ %i1, %bb4 ], [ %i1, %bb5 ]
  br label %bb2
}