; LLVM IR from smv1999/CompetitiveProgrammingQuestionBank :: Data Structures/Graphs/Representation (adjacency_matrix)

; 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_istream" = type { ptr, i64, %"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 }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %16 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %16, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  %20 = zext i32 %19 to i64
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  %23 = zext i32 %22 to i64
  %24 = call ptr @llvm.stacksave.p0()
  store ptr %24, ptr %8, align 8
  %25 = mul nuw i64 %20, %23
  %26 = alloca i32, i64 %25, align 16
  store i64 %20, ptr %9, align 8
  store i64 %23, ptr %10, align 8
  br label %27

27:                                               ; preds = %31, %2
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = add nsw i32 %28, -1
  store i32 %29, ptr %7, align 4, !tbaa !5
  %30 = icmp ne i32 %28, 0
  br i1 %30, label %31, label %48

31:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #5
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %11)
  %33 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %32, ptr noundef nonnull align 4 dereferenceable(4) %12)
  %34 = load i32, ptr %11, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = mul nsw i64 %35, %23
  %37 = getelementptr inbounds i32, ptr %26, i64 %36
  %38 = load i32, ptr %12, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds i32, ptr %37, i64 %39
  store i32 1, ptr %40, align 4, !tbaa !5
  %41 = load i32, ptr %12, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = mul nsw i64 %42, %23
  %44 = getelementptr inbounds i32, ptr %26, i64 %43
  %45 = load i32, ptr %11, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  store i32 1, ptr %47, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  br label %27, !llvm.loop !11

48:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #5
  store i32 0, ptr %13, align 4, !tbaa !5
  br label %49

49:                                               ; preds = %78, %48
  %50 = load i32, ptr %13, align 4, !tbaa !5
  %51 = load i32, ptr %6, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  %53 = icmp slt i32 %50, %52
  br i1 %53, label %55, label %54

54:                                               ; preds = %49
  store i32 4, ptr %14, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #5
  br label %81

55:                                               ; preds = %49
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #5
  store i32 0, ptr %15, align 4, !tbaa !5
  br label %56

56:                                               ; preds = %73, %55
  %57 = load i32, ptr %15, align 4, !tbaa !5
  %58 = load i32, ptr %6, align 4, !tbaa !5
  %59 = add nsw i32 %58, 1
  %60 = icmp slt i32 %57, %59
  br i1 %60, label %62, label %61

61:                                               ; preds = %56
  store i32 7, ptr %14, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  br label %76

62:                                               ; preds = %56
  %63 = load i32, ptr %13, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = mul nsw i64 %64, %23
  %66 = getelementptr inbounds i32, ptr %26, i64 %65
  %67 = load i32, ptr %15, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds i32, ptr %66, i64 %68
  %70 = load i32, ptr %69, align 4, !tbaa !5
  %71 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %70)
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %71, ptr noundef @.str)
  br label %73

73:                                               ; preds = %62
  %74 = load i32, ptr %15, align 4, !tbaa !5
  %75 = add nsw i32 %74, 1
  store i32 %75, ptr %15, align 4, !tbaa !5
  br label %56, !llvm.loop !13

76:                                               ; preds = %61
  %77 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  br label %78

78:                                               ; preds = %76
  %79 = load i32, ptr %13, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %13, align 4, !tbaa !5
  br label %49, !llvm.loop !14

81:                                               ; preds = %54
  store i32 0, ptr %3, align 4
  store i32 1, ptr %14, align 4
  %82 = load ptr, ptr %8, align 8
  call void @llvm.stackrestore.p0(ptr %82)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %83 = load i32, ptr %3, align 4
  ret i32 %83
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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 #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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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_istream" = type { ptr, i64, %"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 }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = add nsw i32 %9, 1
  %11 = zext i32 %10 to i64
  %12 = call ptr @llvm.stacksave.p0()
  %13 = mul nuw i64 %11, %11
  %14 = alloca i32, i64 %13, align 16
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = add nsw i32 %15, -1
  store i32 %16, ptr %4, align 4, !tbaa !5
  %.not11 = icmp eq i32 %15, 0
  br i1 %.not11, label %.preheader10, label %.lr.ph

.preheader10:                                     ; preds = %.lr.ph, %2
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %.not815 = icmp slt i32 %17, 0
  br i1 %.not815, label %._crit_edge17, label %.preheader

.lr.ph:                                           ; preds = %2, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #5
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %18, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = mul nsw i64 %21, %11
  %23 = getelementptr inbounds i32, ptr %14, i64 %22
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  store i32 1, ptr %26, align 4, !tbaa !5
  %27 = mul nsw i64 %25, %11
  %28 = getelementptr inbounds i32, ptr %14, i64 %27
  %29 = getelementptr inbounds i32, ptr %28, i64 %21
  store i32 1, ptr %29, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #5
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %4, align 4, !tbaa !5
  %.not = icmp eq i32 %30, 0
  br i1 %.not, label %.preheader10, label %.lr.ph, !llvm.loop !9

.preheader:                                       ; preds = %.preheader10, %._crit_edge
  %32 = phi i32 [ %36, %._crit_edge ], [ %17, %.preheader10 ]
  %indvars.iv19 = phi i64 [ %indvars.iv.next20, %._crit_edge ], [ 0, %.preheader10 ]
  %.not912 = icmp slt i32 %32, 0
  br i1 %.not912, label %._crit_edge, label %.lr.ph14

.lr.ph14:                                         ; preds = %.preheader
  %33 = mul nuw nsw i64 %indvars.iv19, %11
  %34 = getelementptr inbounds i32, ptr %14, i64 %33
  br label %38

._crit_edge17:                                    ; preds = %._crit_edge, %.preheader10
  call void @llvm.stackrestore.p0(ptr %12)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  ret i32 0

._crit_edge:                                      ; preds = %38, %.preheader
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
  %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %.not8.not = icmp slt i64 %indvars.iv19, %37
  br i1 %.not8.not, label %.preheader, label %._crit_edge17, !llvm.loop !11

38:                                               ; preds = %.lr.ph14, %38
  %indvars.iv = phi i64 [ 0, %.lr.ph14 ], [ %indvars.iv.next, %38 ]
  %39 = getelementptr inbounds i32, ptr %34, i64 %indvars.iv
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %40)
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %41, ptr noundef nonnull @.str)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %43 = load i32, ptr %3, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %.not9.not = icmp slt i64 %indvars.iv, %44
  br i1 %.not9.not, label %38, label %._crit_edge, !llvm.loop !12
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { "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 nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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 #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}


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