; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (2455)

; 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: nounwind uwtable
define dso_local i32 @averageValue(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, 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
  br label %9

9:                                                ; preds = %34, %2
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %37

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i32, ptr %15, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !9
  store i32 %19, ptr %8, align 4, !tbaa !9
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = and i32 %20, 1
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %33

23:                                               ; preds = %14
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = srem i32 %24, 3
  %26 = icmp eq i32 %25, 0
  br i1 %26, label %27, label %33

27:                                               ; preds = %23
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = add nsw i32 %29, %28
  store i32 %30, ptr %5, align 4, !tbaa !9
  %31 = load i32, ptr %6, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %6, align 4, !tbaa !9
  br label %33

33:                                               ; preds = %27, %23, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %7, align 4, !tbaa !9
  br label %9, !llvm.loop !11

37:                                               ; preds = %13
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = icmp eq i32 %38, 0
  br i1 %39, label %40, label %42

40:                                               ; preds = %37
  %41 = load i32, ptr %6, align 4, !tbaa !9
  br label %46

42:                                               ; preds = %37
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = load i32, ptr %6, align 4, !tbaa !9
  %45 = sdiv i32 %43, %44
  br label %46

46:                                               ; preds = %42, %40
  %47 = phi i32 [ %41, %40 ], [ %45, %42 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %47
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @averageValue(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge.thread

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  %min.iters.check = icmp ult i32 %1, 8
  br i1 %min.iters.check, label %.lr.ph.preheader30, label %vector.ph

.lr.ph.preheader30:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %.019.ph = phi i32 [ 0, %.lr.ph.preheader ], [ %23, %middle.block ]
  %.01417.ph = phi i32 [ 0, %.lr.ph.preheader ], [ %24, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  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 ], [ %20, %vector.body ]
  %vec.phi24 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %21, %vector.body ]
  %vec.phi25 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %16, %vector.body ]
  %vec.phi26 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %17, %vector.body ]
  %4 = getelementptr inbounds i32, ptr %0, i64 %index
  %5 = getelementptr inbounds i8, ptr %4, i64 16
  %wide.load = load <4 x i32>, ptr %4, align 4, !tbaa !5
  %wide.load27 = load <4 x i32>, ptr %5, align 4, !tbaa !5
  %6 = and <4 x i32> %wide.load, <i32 1, i32 1, i32 1, i32 1>
  %7 = and <4 x i32> %wide.load27, <i32 1, i32 1, i32 1, i32 1>
  %8 = srem <4 x i32> %wide.load, <i32 3, i32 3, i32 3, i32 3>
  %9 = srem <4 x i32> %wide.load27, <i32 3, i32 3, i32 3, i32 3>
  %10 = or <4 x i32> %6, %8
  %11 = or <4 x i32> %7, %9
  %12 = icmp eq <4 x i32> %10, zeroinitializer
  %13 = icmp eq <4 x i32> %11, zeroinitializer
  %14 = zext <4 x i1> %12 to <4 x i32>
  %15 = zext <4 x i1> %13 to <4 x i32>
  %16 = add <4 x i32> %vec.phi25, %14
  %17 = add <4 x i32> %vec.phi26, %15
  %18 = select <4 x i1> %12, <4 x i32> %wide.load, <4 x i32> zeroinitializer
  %19 = select <4 x i1> %13, <4 x i32> %wide.load27, <4 x i32> zeroinitializer
  %20 = add <4 x i32> %18, %vec.phi
  %21 = add <4 x i32> %19, %vec.phi24
  %index.next = add nuw i64 %index, 8
  %22 = icmp eq i64 %index.next, %n.vec
  br i1 %22, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %21, %20
  %23 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %bin.rdx28 = add <4 x i32> %17, %16
  %24 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx28)
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader30

._crit_edge:                                      ; preds = %.lr.ph, %middle.block
  %.115.lcssa = phi i32 [ %24, %middle.block ], [ %.115, %.lr.ph ]
  %.1.lcssa = phi i32 [ %23, %middle.block ], [ %.1, %.lr.ph ]
  %25 = icmp eq i32 %.115.lcssa, 0
  br i1 %25, label %._crit_edge.thread, label %33

.lr.ph:                                           ; preds = %.lr.ph.preheader30, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader30 ]
  %.019 = phi i32 [ %.1, %.lr.ph ], [ %.019.ph, %.lr.ph.preheader30 ]
  %.01417 = phi i32 [ %.115, %.lr.ph ], [ %.01417.ph, %.lr.ph.preheader30 ]
  %26 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = and i32 %27, 1
  %29 = srem i32 %27, 3
  %30 = or i32 %28, %29
  %or.cond = icmp eq i32 %30, 0
  %31 = zext i1 %or.cond to i32
  %.115 = add nuw nsw i32 %.01417, %31
  %32 = select i1 %or.cond, i32 %27, i32 0
  %.1 = add nsw i32 %32, %.019
  %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, label %.lr.ph, !llvm.loop !13

33:                                               ; preds = %._crit_edge
  %34 = sdiv i32 %.1.lcssa, %.115.lcssa
  br label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %2, %._crit_edge, %33
  %35 = phi i32 [ %34, %33 ], [ 0, %._crit_edge ], [ 0, %2 ]
  ret i32 %35
}

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

attributes #0 = { nofree norecurse nosync nounwind 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/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: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass