; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (961)

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

9:                                                ; preds = %40, %2
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store i32 2, ptr %8, align 4
  br label %43

14:                                               ; preds = %9
  %15 = load ptr, ptr %4, 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 %6, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i32, ptr %21, i64 %23
  %25 = getelementptr inbounds i32, ptr %24, i64 -1
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = icmp eq i32 %20, %26
  br i1 %27, label %37, label %28

28:                                               ; preds = %14
  %29 = load i32, ptr %6, align 4, !tbaa !9
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = getelementptr inbounds i32, ptr %33, i64 -2
  %35 = load i32, ptr %34, align 4, !tbaa !9
  %36 = icmp eq i32 %29, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %28, %14
  %38 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %38, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %43

39:                                               ; preds = %28
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %7, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %7, align 4, !tbaa !9
  br label %9, !llvm.loop !11

43:                                               ; preds = %37, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  %44 = load i32, ptr %8, align 4
  switch i32 %44, label %47 [
    i32 2, label %45
  ]

45:                                               ; preds = %43
  %46 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %46, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

47:                                               ; preds = %45, %43
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %48 = load i32, ptr %3, align 4
  ret i32 %48
}

; 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 @repeatedNTimes(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not19 = icmp sgt i32 %1, 2
  br i1 %.not19, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %8, %.lr.ph.preheader
  %indvars.iv = phi i64 [ 2, %.lr.ph.preheader ], [ %indvars.iv.next, %8 ]
  %3 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %3, i64 -4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp eq i32 %4, %6
  br i1 %7, label %._crit_edge, label %8

8:                                                ; preds = %.lr.ph
  %9 = getelementptr inbounds i8, ptr %3, i64 -8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp eq i32 %4, %10
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  %or.cond = select i1 %11, i1 true, i1 %exitcond.not
  br i1 %or.cond, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %8, %.lr.ph, %2
  %spec.select = phi i32 [ undef, %2 ], [ %4, %.lr.ph ], [ %4, %8 ]
  ret i32 %spec.select
}

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" }

!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}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass