; LLVM IR from kenjin/Awesome-LC-C-Cracker :: leetcode-c-sol/0991_broken-calculator (0991_broken-calculator)

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

6:                                                ; preds = %22, %2
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = icmp sgt i32 %7, %8
  br i1 %9, label %10, label %23

10:                                               ; preds = %6
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr %5, align 4, !tbaa !5
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = srem i32 %13, 2
  %15 = icmp eq i32 %14, 1
  br i1 %15, label %16, label %19

16:                                               ; preds = %10
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %4, align 4, !tbaa !5
  br label %22

19:                                               ; preds = %10
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = sdiv i32 %20, 2
  store i32 %21, ptr %4, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %19, %16
  br label %6, !llvm.loop !9

23:                                               ; preds = %6
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = add nsw i32 %24, %25
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = sub nsw i32 %26, %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %28
}

; 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 @brokenCalc(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, %0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %11
  %.012 = phi i32 [ %4, %11 ], [ 0, %2 ]
  %.0911 = phi i32 [ %.1, %11 ], [ %1, %2 ]
  %4 = add nuw nsw i32 %.012, 1
  %5 = and i32 %.0911, -2147483647
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %9

7:                                                ; preds = %.lr.ph
  %8 = add nuw nsw i32 %.0911, 1
  br label %11

9:                                                ; preds = %.lr.ph
  %10 = sdiv i32 %.0911, 2
  br label %11

11:                                               ; preds = %9, %7
  %.1 = phi i32 [ %8, %7 ], [ %10, %9 ]
  %12 = icmp sgt i32 %.1, %0
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %11, %2
  %.09.lcssa = phi i32 [ %1, %2 ], [ %.1, %11 ]
  %.0.lcssa = phi i32 [ 0, %2 ], [ %4, %11 ]
  %13 = sub i32 %0, %.09.lcssa
  %14 = add i32 %13, %.0.lcssa
  ret i32 %14
}

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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass