; LLVM IR from upupming/algorithm :: AdvancedLevel_C++/1054. The Dominant Color (20) (main)

; 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"

%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, std::pair<const int, int>, std::_Select1st<std::pair<const int, int>>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, std::pair<const int, int>, std::_Select1st<std::pair<const int, int>>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::map", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 48, ptr %4) #5
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = mul nsw i32 %13, %14
  %16 = sdiv i32 %15, 2
  store i32 %16, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %58, %0
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  store i32 2, ptr %7, align 4
  br label %61

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %23

23:                                               ; preds = %52, %22
  %24 = load i32, ptr %8, align 4, !tbaa !5
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  store i32 5, ptr %7, align 4
  br label %55

28:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %29 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %9)
          to label %30 unwind label %44

30:                                               ; preds = %28
  %31 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr noundef nonnull align 4 dereferenceable(4) %9)
          to label %32 unwind label %44

32:                                               ; preds = %30
  %33 = load i32, ptr %31, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %31, align 4, !tbaa !5
  %35 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr noundef nonnull align 4 dereferenceable(4) %9)
          to label %36 unwind label %44

36:                                               ; preds = %32
  %37 = load i32, ptr %35, align 4, !tbaa !5
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = icmp sgt i32 %37, %38
  br i1 %39, label %40, label %48

40:                                               ; preds = %36
  %41 = load i32, ptr %9, align 4, !tbaa !5
  %42 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %41)
          to label %43 unwind label %44

43:                                               ; preds = %40
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  br label %49

44:                                               ; preds = %40, %32, %30, %28
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %10, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %66

48:                                               ; preds = %36
  store i32 0, ptr %7, align 4
  br label %49

49:                                               ; preds = %48, %43
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  %50 = load i32, ptr %7, align 4
  switch i32 %50, label %55 [
    i32 0, label %51
  ]

51:                                               ; preds = %49
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %8, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %8, align 4, !tbaa !5
  br label %23, !llvm.loop !9

55:                                               ; preds = %49, %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  %56 = load i32, ptr %7, align 4
  switch i32 %56, label %61 [
    i32 5, label %57
  ]

57:                                               ; preds = %55
  br label %58

58:                                               ; preds = %57
  %59 = load i32, ptr %6, align 4, !tbaa !5
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %6, align 4, !tbaa !5
  br label %17, !llvm.loop !11

61:                                               ; preds = %55, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %62 = load i32, ptr %7, align 4
  switch i32 %62, label %64 [
    i32 2, label %63
  ]

63:                                               ; preds = %61
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  br label %64

64:                                               ; preds = %63, %61
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %65 = load i32, ptr %1, align 4
  ret i32 %65

66:                                               ; preds = %44
  %67 = load ptr, ptr %10, align 8
  %68 = load i32, ptr %11, align 4
  %69 = insertvalue { ptr, i32 } poison, ptr %67, 0
  %70 = insertvalue { ptr, i32 } %69, i32 %68, 1
  resume { ptr, i32 } %70
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

declare i32 @printf(ptr noundef, ...) #2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse 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 = { "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 #3 = { 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 #4 = { mustprogress 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 #5 = { 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, std::pair<const int, int>, std::_Select1st<std::pair<const int, int>>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, std::pair<const int, int>, std::_Select1st<std::pair<const int, int>>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::map", align 8
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %3) #5
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = mul nsw i32 %7, %6
  %9 = sdiv i32 %8, 2
  %.not1825 = icmp sgt i32 %7, 0
  %10 = icmp sgt i32 %6, 0
  %or.cond = select i1 %.not1825, i1 %10, i1 false
  br i1 %or.cond, label %.preheader, label %.critedge22

.preheader:                                       ; preds = %0, %.critedge20
  %11 = phi i32 [ %28, %.critedge20 ], [ %7, %0 ]
  %12 = phi i32 [ %29, %.critedge20 ], [ %6, %0 ]
  %.01226 = phi i32 [ %30, %.critedge20 ], [ 0, %0 ]
  %.not1723 = icmp sgt i32 %12, 0
  br i1 %.not1723, label %.lr.ph, label %.critedge20

.lr.ph:                                           ; preds = %.preheader, %.critedge
  %.01324 = phi i32 [ %26, %.critedge ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %4)
  %14 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %15 unwind label %24

15:                                               ; preds = %.lr.ph
  %16 = load i32, ptr %14, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %14, align 4, !tbaa !5
  %18 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %19 unwind label %24

19:                                               ; preds = %15
  %20 = load i32, ptr %18, align 4, !tbaa !5
  %.not = icmp sgt i32 %20, %9
  br i1 %.not, label %21, label %.critedge

21:                                               ; preds = %19
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %22)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  br label %.critedge22

24:                                               ; preds = %15, %.lr.ph
  %25 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  resume { ptr, i32 } %25

.critedge:                                        ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  %26 = add nuw nsw i32 %.01324, 1
  %27 = load i32, ptr %1, align 4, !tbaa !5
  %.not17 = icmp slt i32 %26, %27
  br i1 %.not17, label %.lr.ph, label %.critedge20.loopexit, !llvm.loop !9

.critedge20.loopexit:                             ; preds = %.critedge
  %.pre = load i32, ptr %2, align 4, !tbaa !5
  br label %.critedge20

.critedge20:                                      ; preds = %.critedge20.loopexit, %.preheader
  %28 = phi i32 [ %.pre, %.critedge20.loopexit ], [ %11, %.preheader ]
  %29 = phi i32 [ %27, %.critedge20.loopexit ], [ %12, %.preheader ]
  %30 = add nuw nsw i32 %.01226, 1
  %.not18 = icmp slt i32 %30, %28
  br i1 %.not18, label %.preheader, label %.critedge22, !llvm.loop !11

.critedge22:                                      ; preds = %.critedge20, %0, %21
  call void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIiiSt4lessIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { 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 #4 = { mustprogress 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 #5 = { 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10, !12}
!12 = !{!"llvm.loop.unswitch.partial.disable"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimpleLoopUnswitchPass,SimplifyCFGPass