; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (2169)

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

8:                                                ; preds = %28, %2
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 1
  br i1 %10, label %11, label %14

11:                                               ; preds = %8
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, 1
  br label %14

14:                                               ; preds = %11, %8
  %15 = phi i1 [ false, %8 ], [ %13, %11 ]
  br i1 %15, label %16, label %31

16:                                               ; preds = %14
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = icmp sgt i32 %17, %18
  br i1 %19, label %20, label %24

20:                                               ; preds = %16
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = sub nsw i32 %22, %21
  store i32 %23, ptr %4, align 4, !tbaa !5
  br label %28

24:                                               ; preds = %16
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = sub nsw i32 %26, %25
  store i32 %27, ptr %5, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %24, %20
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %6, align 4, !tbaa !5
  br label %8, !llvm.loop !9

31:                                               ; preds = %14
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = icmp eq i32 %32, 0
  br i1 %33, label %37, label %34

34:                                               ; preds = %31
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = icmp eq i32 %35, 0
  br i1 %36, label %37, label %39

37:                                               ; preds = %34, %31
  %38 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %38, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %46

39:                                               ; preds = %34
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = add nsw i32 %40, %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = add nsw i32 %42, %43
  %45 = sub nsw i32 %44, 1
  store i32 %45, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %46

46:                                               ; preds = %39, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %47 = load i32, ptr %3, align 4
  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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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(none) uwtable
define dso_local i32 @countOperations(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %0, 1
  %4 = icmp sgt i32 %1, 1
  %5 = and i1 %3, %4
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.023 = phi i32 [ %9, %.lr.ph ], [ 0, %2 ]
  %.01722 = phi i32 [ %.1, %.lr.ph ], [ %1, %2 ]
  %.01821 = phi i32 [ %.119, %.lr.ph ], [ %0, %2 ]
  %6 = icmp ugt i32 %.01821, %.01722
  %7 = select i1 %6, i32 %.01722, i32 0
  %.119 = sub nsw i32 %.01821, %7
  %8 = select i1 %6, i32 0, i32 %.01821
  %.1 = sub nsw i32 %.01722, %8
  %9 = add nuw nsw i32 %.023, 1
  %10 = icmp sgt i32 %.119, 1
  %11 = icmp sgt i32 %.1, 1
  %12 = select i1 %10, i1 %11, i1 false
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.018.lcssa = phi i32 [ %0, %2 ], [ %.119, %.lr.ph ]
  %.017.lcssa = phi i32 [ %1, %2 ], [ %.1, %.lr.ph ]
  %.0.lcssa = phi i32 [ 0, %2 ], [ %9, %.lr.ph ]
  %13 = icmp eq i32 %.018.lcssa, 0
  %14 = icmp eq i32 %.017.lcssa, 0
  %or.cond = select i1 %13, i1 true, i1 %14
  %15 = add i32 %.018.lcssa, -1
  %16 = add i32 %15, %.017.lcssa
  %17 = select i1 %or.cond, i32 0, i32 %16
  %.020 = add i32 %.0.lcssa, %17
  ret i32 %.020
}

attributes #0 = { nofree norecurse nosync nounwind memory(none) 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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