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      1 ; RUN: opt -S -slp-vectorizer %s -slp-threshold=-10 | FileCheck %s
      2 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
      3 target triple = "aarch64--linux-gnu"
      4 
      5 %structA = type { [2 x float] }
      6 
      7 define void @test1(%structA* nocapture readonly %J, i32 %xmin, i32 %ymin) {
      8 ; CHECK-LABEL: test1
      9 ; CHECK: %arrayidx4 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 0
     10 ; CHECK: %arrayidx9 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 1
     11 ; CHECK: %3 = bitcast float* %arrayidx4 to <2 x float>*
     12 ; CHECK: %4 = load <2 x float>, <2 x float>* %3, align 4
     13 ; CHECK: %5 = fsub fast <2 x float> %2, %4
     14 ; CHECK: %6 = fmul fast <2 x float> %5, %5
     15 ; CHECK: %7 = extractelement <2 x float> %6, i32 0
     16 ; CHECK: %8 = extractelement <2 x float> %6, i32 1
     17 ; CHECK: %add = fadd fast float %7, %8
     18 ; CHECK: %cmp = fcmp oeq float %add, 0.000000e+00
     19 
     20 entry:
     21   br label %for.body3.lr.ph
     22 
     23 for.body3.lr.ph:
     24   %conv5 = sitofp i32 %ymin to float
     25   %conv = sitofp i32 %xmin to float
     26   %arrayidx4 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 0
     27   %0 = load float, float* %arrayidx4, align 4
     28   %sub = fsub fast float %conv, %0
     29   %arrayidx9 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 1
     30   %1 = load float, float* %arrayidx9, align 4
     31   %sub10 = fsub fast float %conv5, %1
     32   %mul11 = fmul fast float %sub, %sub
     33   %mul12 = fmul fast float %sub10, %sub10
     34   %add = fadd fast float %mul11, %mul12
     35   %cmp = fcmp oeq float %add, 0.000000e+00
     36   br i1 %cmp, label %for.body3.lr.ph, label %for.end27
     37 
     38 for.end27:
     39   ret void
     40 }
     41 
     42 define void @test2(%structA* nocapture readonly %J, i32 %xmin, i32 %ymin) {
     43 ; CHECK-LABEL: test2
     44 ; CHECK: %arrayidx4 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 0
     45 ; CHECK: %arrayidx9 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 1
     46 ; CHECK: %3 = bitcast float* %arrayidx4 to <2 x float>*
     47 ; CHECK: %4 = load <2 x float>, <2 x float>* %3, align 4
     48 ; CHECK: %5 = fsub fast <2 x float> %2, %4
     49 ; CHECK: %6 = fmul fast <2 x float> %5, %5
     50 ; CHECK: %7 = extractelement <2 x float> %6, i32 0
     51 ; CHECK: %8 = extractelement <2 x float> %6, i32 1
     52 ; CHECK: %add = fadd fast float %8, %7
     53 ; CHECK: %cmp = fcmp oeq float %add, 0.000000e+00
     54 
     55 entry:
     56   br label %for.body3.lr.ph
     57 
     58 for.body3.lr.ph:
     59   %conv5 = sitofp i32 %ymin to float
     60   %conv = sitofp i32 %xmin to float
     61   %arrayidx4 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 0
     62   %0 = load float, float* %arrayidx4, align 4
     63   %sub = fsub fast float %conv, %0
     64   %arrayidx9 = getelementptr inbounds %structA, %structA* %J, i64 0, i32 0, i64 1
     65   %1 = load float, float* %arrayidx9, align 4
     66   %sub10 = fsub fast float %conv5, %1
     67   %mul11 = fmul fast float %sub, %sub
     68   %mul12 = fmul fast float %sub10, %sub10
     69   %add = fadd fast float %mul12, %mul11         ;;;<---- Operands commuted!!
     70   %cmp = fcmp oeq float %add, 0.000000e+00
     71   br i1 %cmp, label %for.body3.lr.ph, label %for.end27
     72 
     73 for.end27:
     74   ret void
     75 }
     76