; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 682A. Alyona and Numbers.ll (Z3fixPyy)

; 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: mustprogress nounwind uwtable
define dso_local void @_Z3fixPyy(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %8 = load i64, ptr %4, align 8, !tbaa !9
  %9 = udiv i64 %8, 5
  store i64 %9, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !11
  br label %10

10:                                               ; preds = %20, %2
  %11 = load i32, ptr %6, align 4, !tbaa !11
  %12 = icmp slt i32 %11, 5
  br i1 %12, label %14, label %13

13:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %23

14:                                               ; preds = %10
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !11
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i64, ptr %16, i64 %18
  store i64 %15, ptr %19, align 8, !tbaa !9
  br label %20

20:                                               ; preds = %14
  %21 = load i32, ptr %6, align 4, !tbaa !11
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %6, align 4, !tbaa !11
  br label %10, !llvm.loop !13

23:                                               ; preds = %13
  %24 = load i64, ptr %4, align 8, !tbaa !9
  %25 = urem i64 %24, 5
  store i64 %25, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 1, ptr %7, align 4, !tbaa !11
  br label %26

26:                                               ; preds = %39, %23
  %27 = load i32, ptr %7, align 4, !tbaa !11
  %28 = sext i32 %27 to i64
  %29 = load i64, ptr %5, align 8, !tbaa !9
  %30 = icmp ule i64 %28, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %42

32:                                               ; preds = %26
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = load i32, ptr %7, align 4, !tbaa !11
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i64, ptr %33, i64 %35
  %37 = load i64, ptr %36, align 8, !tbaa !9
  %38 = add i64 %37, 1
  store i64 %38, ptr %36, align 8, !tbaa !9
  br label %39

39:                                               ; preds = %32
  %40 = load i32, ptr %7, align 4, !tbaa !11
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %7, align 4, !tbaa !11
  br label %26, !llvm.loop !15

42:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

; 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 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 memory(argmem: readwrite) uwtable
define dso_local void @_Z3fixPyy(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = udiv i64 %1, 5
  store i64 %3, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  store i64 %3, ptr %4, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  store i64 %3, ptr %5, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  store i64 %3, ptr %6, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 32
  store i64 %3, ptr %7, align 8, !tbaa !5
  %8 = urem i64 %1, 5
  %.not14 = icmp eq i64 %8, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %min.iters.check = icmp ult i64 %8, 4
  br i1 %min.iters.check, label %.lr.ph.preheader19, label %vector.ph

.lr.ph.preheader19:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 1, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %8, 4
  %ind.end = or disjoint i64 %n.vec, 1
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %9 = getelementptr inbounds i64, ptr %0, i64 %offset.idx
  %10 = getelementptr inbounds i8, ptr %9, i64 16
  %wide.load = load <2 x i64>, ptr %9, align 8, !tbaa !5
  %wide.load18 = load <2 x i64>, ptr %10, align 8, !tbaa !5
  %11 = add <2 x i64> %wide.load, <i64 1, i64 1>
  %12 = add <2 x i64> %wide.load18, <i64 1, i64 1>
  store <2 x i64> %11, ptr %9, align 8, !tbaa !5
  store <2 x i64> %12, ptr %10, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %13 = icmp eq i64 %index.next, %n.vec
  br i1 %13, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %8, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader19

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %2
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader19, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader19 ]
  %14 = getelementptr inbounds i64, ptr %0, i64 %indvars.iv
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = add i64 %15, 1
  store i64 %16, ptr %14, align 8, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %.not.not = icmp ugt i64 %8, %indvars.iv
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !13
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) 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" }

!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 = !{!"long long", !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: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass