; LLVM IR from nragland37/cpp-projects :: programming-II/01-twoDimensionalArray/testScoreAnalysis. (Z14averageOneTestPA8_Kiii)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_Z14averageOneTestPA8_Kiii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca double, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %26, %3
  %11 = load i32, ptr %9, align 4, !tbaa !9
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %29

15:                                               ; preds = %10
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [8 x i32], ptr %16, i64 %18
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [8 x i32], ptr %19, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = add nsw i32 %24, %23
  store i32 %25, ptr %7, align 4, !tbaa !9
  br label %26

26:                                               ; preds = %15
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %9, align 4, !tbaa !9
  br label %10, !llvm.loop !11

29:                                               ; preds = %14
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = sitofp i32 %30 to double
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = sitofp i32 %32 to double
  %34 = fdiv double %31, %33
  store double %34, ptr %8, align 8, !tbaa !13
  %35 = load double, ptr %8, align 8, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret double %35
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !7, i64 0}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef double @_Z14averageOneTestPA8_Kiii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %1, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %5 = sext i32 %2 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  %min.iters.check = icmp ult i32 %1, 9
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %.0911.ph = phi i32 [ 0, %.lr.ph ], [ %42, %middle.block ]
  br label %scalar.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.mod.vf = and i64 %wide.trip.count, 7
  %6 = icmp eq i64 %n.mod.vf, 0
  %7 = select i1 %6, i64 8, i64 %n.mod.vf
  %n.vec = sub nsw i64 %wide.trip.count, %7
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %39, %vector.body ]
  %vec.phi14 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %40, %vector.body ]
  %8 = or disjoint i64 %index, 1
  %9 = or disjoint i64 %index, 2
  %10 = or disjoint i64 %index, 3
  %11 = or disjoint i64 %index, 4
  %12 = or disjoint i64 %index, 5
  %13 = or disjoint i64 %index, 6
  %14 = or disjoint i64 %index, 7
  %15 = getelementptr inbounds [8 x i32], ptr %0, i64 %index, i64 %5
  %16 = getelementptr inbounds [8 x i32], ptr %0, i64 %8, i64 %5
  %17 = getelementptr inbounds [8 x i32], ptr %0, i64 %9, i64 %5
  %18 = getelementptr inbounds [8 x i32], ptr %0, i64 %10, i64 %5
  %19 = getelementptr inbounds [8 x i32], ptr %0, i64 %11, i64 %5
  %20 = getelementptr inbounds [8 x i32], ptr %0, i64 %12, i64 %5
  %21 = getelementptr inbounds [8 x i32], ptr %0, i64 %13, i64 %5
  %22 = getelementptr inbounds [8 x i32], ptr %0, i64 %14, i64 %5
  %23 = load i32, ptr %15, align 4, !tbaa !5
  %24 = load i32, ptr %16, align 4, !tbaa !5
  %25 = load i32, ptr %17, align 4, !tbaa !5
  %26 = load i32, ptr %18, align 4, !tbaa !5
  %27 = insertelement <4 x i32> poison, i32 %23, i64 0
  %28 = insertelement <4 x i32> %27, i32 %24, i64 1
  %29 = insertelement <4 x i32> %28, i32 %25, i64 2
  %30 = insertelement <4 x i32> %29, i32 %26, i64 3
  %31 = load i32, ptr %19, align 4, !tbaa !5
  %32 = load i32, ptr %20, align 4, !tbaa !5
  %33 = load i32, ptr %21, align 4, !tbaa !5
  %34 = load i32, ptr %22, align 4, !tbaa !5
  %35 = insertelement <4 x i32> poison, i32 %31, i64 0
  %36 = insertelement <4 x i32> %35, i32 %32, i64 1
  %37 = insertelement <4 x i32> %36, i32 %33, i64 2
  %38 = insertelement <4 x i32> %37, i32 %34, i64 3
  %39 = add <4 x i32> %30, %vec.phi
  %40 = add <4 x i32> %38, %vec.phi14
  %index.next = add nuw i64 %index, 8
  %41 = icmp eq i64 %index.next, %n.vec
  br i1 %41, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %40, %39
  %42 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  br label %scalar.ph.preheader

._crit_edge.loopexit:                             ; preds = %scalar.ph
  %43 = sitofp i32 %48 to double
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %3
  %.09.lcssa = phi double [ 0.000000e+00, %3 ], [ %43, %._crit_edge.loopexit ]
  %44 = sitofp i32 %1 to double
  %45 = fdiv double %.09.lcssa, %44
  ret double %45

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %.0911 = phi i32 [ %48, %scalar.ph ], [ %.0911.ph, %scalar.ph.preheader ]
  %46 = getelementptr inbounds [8 x i32], ptr %0, i64 %indvars.iv, i64 %5
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %48 = add nsw i32 %47, %.0911
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge.loopexit, label %scalar.ph, !llvm.loop !13
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass