; LLVM IR from sunkafei/xcpc-algorithm-templates :: 算法/网络流 (MCMF-dijkstra)

; 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"

%struct.MCMF = type { i32, [21000 x i32], [21000 x i32], [21000 x i32], [21000 x i32], [21000 x %"class.std::vector"] }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@mcmf = external dso_local global %struct.MCMF, align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %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
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i64, align 8
  %12 = alloca double, align 8
  store i32 0, ptr %1, align 4
  %13 = load ptr, ptr @stdin, align 8, !tbaa !5
  %14 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.2, ptr noundef %13)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 0, ptr %5, align 4, !tbaa !9
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef %2, ptr noundef %3, ptr noundef %4)
  %16 = load i32, ptr %2, align 4, !tbaa !9
  %17 = add nsw i32 %16, 10
  call void @_ZN4MCMF4initEi(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef %17)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  store i32 1, ptr %6, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %29, %0
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = icmp sle i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %32

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %7, ptr noundef %8, ptr noundef %9, ptr noundef %10)
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = load i32, ptr %10, align 4, !tbaa !9
  call void @_ZN4MCMF8add_edgeEiiii(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef %25, i32 noundef %26, i32 noundef %27, i32 noundef %28)
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %29

29:                                               ; preds = %23
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %6, align 4, !tbaa !9
  br label %18, !llvm.loop !11

32:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  %33 = call i64 @clock() #6
  store i64 %33, ptr %11, align 8, !tbaa !13
  %34 = load i32, ptr %2, align 4, !tbaa !9
  %35 = load i32, ptr %4, align 4, !tbaa !9
  %36 = call noundef i32 @_ZN4MCMF5solveEiiRii(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef 1, i32 noundef %34, ptr noundef nonnull align 4 dereferenceable(4) %5, i32 noundef %35)
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %36)
  %38 = load i32, ptr %5, align 4, !tbaa !9
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %38)
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %40 = call i64 @clock() #6
  %41 = load i64, ptr %11, align 8, !tbaa !13
  %42 = sub nsw i64 %40, %41
  %43 = sitofp i64 %42 to double
  %44 = fdiv double %43, 1.000000e+06
  store double %44, ptr %12, align 8, !tbaa !15
  %45 = load double, ptr %12, align 8, !tbaa !15
  %46 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, double noundef %45)
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #1

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4MCMF4initEi(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4MCMF8add_edgeEiiii(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef, i32 noundef, i32 noundef, i32 noundef) #4 align 2

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

; Function Attrs: nounwind
declare i64 @clock() #5

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN4MCMF5solveEiiRii(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef, i32 noundef, ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) #4 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 = { "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 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 "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 #6 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !14, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !7, i64 0}


; 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"

%struct.MCMF = type { i32, [21000 x i32], [21000 x i32], [21000 x i32], [21000 x i32], [21000 x %"class.std::vector"] }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@mcmf = external dso_local global %struct.MCMF, align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %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
  %8 = alloca i32, align 4
  %9 = load ptr, ptr @stdin, align 8, !tbaa !5
  %10 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.2, ptr noundef %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  store i32 0, ptr %4, align 4, !tbaa !9
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %12 = load i32, ptr %1, align 4, !tbaa !9
  %13 = add nsw i32 %12, 10
  call void @_ZN4MCMF4initEi(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef %13)
  %14 = load i32, ptr %2, align 4, !tbaa !9
  %.not3 = icmp slt i32 %14, 1
  br i1 %.not3, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  %15 = call i64 @clock() #7
  %16 = load i32, ptr %1, align 4, !tbaa !9
  %17 = load i32, ptr %3, align 4, !tbaa !9
  %18 = call noundef i32 @_ZN4MCMF5solveEiiRii(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef 1, i32 noundef %16, ptr noundef nonnull align 4 dereferenceable(4) %4, i32 noundef %17)
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, i32 noundef %18)
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %20)
  %22 = call i64 @clock() #7
  %23 = sub nsw i64 %22, %15
  %24 = sitofp i64 %23 to double
  %25 = fdiv double %24, 1.000000e+06
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, double noundef %25)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.04 = phi i32 [ %32, %.lr.ph ], [ 1, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #7
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %5, ptr noundef nonnull %6, ptr noundef nonnull %7, ptr noundef nonnull %8)
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = load i32, ptr %6, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = load i32, ptr %8, align 4, !tbaa !9
  call void @_ZN4MCMF8add_edgeEiiii(ptr noundef nonnull align 8 dereferenceable(840008) @mcmf, i32 noundef %28, i32 noundef %29, i32 noundef %30, i32 noundef %31)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  %32 = add nuw nsw i32 %.04, 1
  %33 = load i32, ptr %2, align 4, !tbaa !9
  %.not.not = icmp slt i32 %.04, %33
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4MCMF4initEi(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4MCMF8add_edgeEiiii(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #5 align 2

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

; Function Attrs: nounwind
declare i64 @clock() local_unnamed_addr #6

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN4MCMF5solveEiiRii(ptr noundef nonnull align 8 dereferenceable(840008), i32 noundef, i32 noundef, ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) local_unnamed_addr #5 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 = { "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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #5 = { 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 #6 = { 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 #7 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass