; LLVM IR from VastoLorde95/Competitive-Programming :: Hackerrank/Company Contests/Zalando Codesprint 2016/Problem E (E)

; 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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@g = external dso_local global [20 x [20 x i32]], align 16
@h = external dso_local global [20 x i32], align 16
@ans = external dso_local global i32, align 4
@w = external dso_local global i32, align 4
@p = external dso_local global i32, align 4
@b = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvei(i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %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 %1, align 4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @w, ptr noundef @b, ptr noundef @p)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %32, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load i32, ptr @w, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %35

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %28, %14
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = load i32, ptr @p, align 4, !tbaa !5
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  store i32 5, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %31

20:                                               ; preds = %15
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [20 x [20 x i32]], ptr @g, i64 0, i64 %22
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [20 x i32], ptr %23, i64 0, i64 %25
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %26)
  br label %28

28:                                               ; preds = %20
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %4, align 4, !tbaa !5
  br label %15, !llvm.loop !9

31:                                               ; preds = %19
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !11

35:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %78, %35
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = load i32, ptr @b, align 4, !tbaa !5
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %41, label %40

40:                                               ; preds = %36
  store i32 8, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %81

41:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %42

42:                                               ; preds = %52, %41
  %43 = load i32, ptr %6, align 4, !tbaa !5
  %44 = load i32, ptr @p, align 4, !tbaa !5
  %45 = icmp slt i32 %43, %44
  br i1 %45, label %47, label %46

46:                                               ; preds = %42
  store i32 11, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %55

47:                                               ; preds = %42
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [20 x i32], ptr @h, i64 0, i64 %49
  %51 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %50)
  br label %52

52:                                               ; preds = %47
  %53 = load i32, ptr %6, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %6, align 4, !tbaa !5
  br label %42, !llvm.loop !12

55:                                               ; preds = %46
  store i32 1000000000, ptr @ans, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %56

56:                                               ; preds = %64, %55
  %57 = load i32, ptr %7, align 4, !tbaa !5
  %58 = load i32, ptr @w, align 4, !tbaa !5
  %59 = shl i32 1, %58
  %60 = icmp slt i32 %57, %59
  br i1 %60, label %62, label %61

61:                                               ; preds = %56
  store i32 14, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %67

62:                                               ; preds = %56
  %63 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z5solvei(i32 noundef %63)
  br label %64

64:                                               ; preds = %62
  %65 = load i32, ptr %7, align 4, !tbaa !5
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %7, align 4, !tbaa !5
  br label %56, !llvm.loop !13

67:                                               ; preds = %61
  %68 = load i32, ptr @ans, align 4, !tbaa !5
  %69 = icmp eq i32 %68, 1000000000
  br i1 %69, label %70, label %73

70:                                               ; preds = %67
  %71 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef -1)
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %71, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %77

73:                                               ; preds = %67
  %74 = load i32, ptr @ans, align 4, !tbaa !5
  %75 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %74)
  %76 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %75, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %77

77:                                               ; preds = %73, %70
  br label %78

78:                                               ; preds = %77
  %79 = load i32, ptr %5, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %5, align 4, !tbaa !5
  br label %36, !llvm.loop !14

81:                                               ; preds = %40
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #4

attributes #0 = { 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 #1 = { inlinehint 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 = distinct !{!12, !10}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@g = external dso_local global [20 x [20 x i32]], align 16
@h = external dso_local global [20 x i32], align 16
@ans = external dso_local local_unnamed_addr global i32, align 4
@w = external dso_local global i32, align 4
@p = external dso_local global i32, align 4
@b = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvei(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @w, ptr noundef nonnull @b, ptr noundef nonnull @p)
  %2 = load i32, ptr @w, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  %4 = load i32, ptr @p, align 4
  %5 = icmp sgt i32 %4, 0
  %or.cond = select i1 %3, i1 %5, i1 false
  br i1 %or.cond, label %.preheader20, label %.preheader19

.preheader20:                                     ; preds = %0, %._crit_edge
  %6 = phi i32 [ %11, %._crit_edge ], [ %2, %0 ]
  %7 = phi i32 [ %12, %._crit_edge ], [ %4, %0 ]
  %indvars.iv34 = phi i64 [ %indvars.iv.next35, %._crit_edge ], [ 0, %0 ]
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.preheader19:                                     ; preds = %._crit_edge, %0
  %9 = load i32, ptr @b, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.preheader, label %._crit_edge31

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %.pre = load i32, ptr @w, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader20
  %11 = phi i32 [ %.pre, %._crit_edge.loopexit ], [ %6, %.preheader20 ]
  %12 = phi i32 [ %17, %._crit_edge.loopexit ], [ %7, %.preheader20 ]
  %indvars.iv.next35 = add nuw nsw i64 %indvars.iv34, 1
  %13 = sext i32 %11 to i64
  %14 = icmp slt i64 %indvars.iv.next35, %13
  br i1 %14, label %.preheader20, label %.preheader19, !llvm.loop !9

.lr.ph:                                           ; preds = %.preheader20, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader20 ]
  %15 = getelementptr inbounds [20 x [20 x i32]], ptr @g, i64 0, i64 %indvars.iv34, i64 %indvars.iv
  %16 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %15)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr @p, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !12

.preheader:                                       ; preds = %.preheader19, %._crit_edge29.thread
  %.01530 = phi i32 [ %35, %._crit_edge29.thread ], [ 0, %.preheader19 ]
  %20 = load i32, ptr @p, align 4, !tbaa !5
  %21 = icmp sgt i32 %20, 0
  br i1 %21, label %.lr.ph24, label %._crit_edge25

._crit_edge31:                                    ; preds = %._crit_edge29.thread, %.preheader19
  ret i32 0

._crit_edge25:                                    ; preds = %.lr.ph24, %.preheader
  store i32 1000000000, ptr @ans, align 4, !tbaa !5
  %22 = load i32, ptr @w, align 4, !tbaa !5
  %.not = icmp eq i32 %22, 31
  br i1 %.not, label %._crit_edge29.thread, label %.lr.ph28

.lr.ph24:                                         ; preds = %.preheader, %.lr.ph24
  %indvars.iv37 = phi i64 [ %indvars.iv.next38, %.lr.ph24 ], [ 0, %.preheader ]
  %23 = getelementptr inbounds [20 x i32], ptr @h, i64 0, i64 %indvars.iv37
  %24 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %23)
  %indvars.iv.next38 = add nuw nsw i64 %indvars.iv37, 1
  %25 = load i32, ptr @p, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = icmp slt i64 %indvars.iv.next38, %26
  br i1 %27, label %.lr.ph24, label %._crit_edge25, !llvm.loop !13

._crit_edge29:                                    ; preds = %.lr.ph28
  %.pre40 = load i32, ptr @ans, align 4, !tbaa !5
  %28 = icmp eq i32 %.pre40, 1000000000
  %spec.select = select i1 %28, i32 -1, i32 %.pre40
  br label %._crit_edge29.thread

.lr.ph28:                                         ; preds = %._crit_edge25, %.lr.ph28
  %.026 = phi i32 [ %29, %.lr.ph28 ], [ 0, %._crit_edge25 ]
  tail call void @_Z5solvei(i32 noundef %.026)
  %29 = add nuw nsw i32 %.026, 1
  %30 = load i32, ptr @w, align 4, !tbaa !5
  %31 = shl nuw i32 1, %30
  %32 = icmp slt i32 %29, %31
  br i1 %32, label %.lr.ph28, label %._crit_edge29, !llvm.loop !14

._crit_edge29.thread:                             ; preds = %._crit_edge29, %._crit_edge25
  %.sink41 = phi i32 [ -1, %._crit_edge25 ], [ %spec.select, %._crit_edge29 ]
  %33 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %.sink41)
  %34 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %33, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %35 = add nuw nsw i32 %.01530, 1
  %36 = load i32, ptr @b, align 4, !tbaa !5
  %37 = icmp slt i32 %35, %36
  br i1 %37, label %.preheader, label %._crit_edge31, !llvm.loop !15
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #4

attributes #0 = { 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 #1 = { inlinehint 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 #2 = { 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 #3 = { 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 #4 = { "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++ TBAA"}
!9 = distinct !{!9, !10, !11}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.unswitch.partial.disable"}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10}


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