; LLVM IR from ADJA/algos :: Graphs (FordFulkerson)

; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@used = external dso_local global [1050 x i8], align 16
@s = external dso_local global i32, align 4
@t = external dso_local global i32, align 4
@ans = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7addEdgeiii(i32 noundef, i32 noundef, i32 noundef) #0

; 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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8pushFlowii(i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %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 @n, ptr noundef @m)
  store i32 1, ptr @s, align 4, !tbaa !5
  %9 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %9, ptr @t, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %20, %0
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr @m, align 4, !tbaa !5
  %13 = icmp sle i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %23

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z7addEdgeiii(i32 noundef %17, i32 noundef %18, i32 noundef %19)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %20

20:                                               ; preds = %15
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %2, align 4, !tbaa !5
  br label %10, !llvm.loop !9

23:                                               ; preds = %14
  br label %24

24:                                               ; preds = %36, %23
  call void @llvm.memset.p0.i64(ptr align 16 @used, i8 0, i64 1050, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  %25 = load i32, ptr @s, align 4, !tbaa !5
  %26 = call noundef i32 @_Z8pushFlowii(i32 noundef %25, i32 noundef 1000000000)
  store i32 %26, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %30

29:                                               ; preds = %24
  store i32 6, ptr %7, align 4
  br label %34

30:                                               ; preds = %24
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = load i32, ptr @ans, align 4, !tbaa !5
  %33 = add nsw i32 %32, %31
  store i32 %33, ptr @ans, align 4, !tbaa !5
  store i32 0, ptr %7, align 4
  br label %34

34:                                               ; preds = %30, %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %35 = load i32, ptr %7, align 4
  switch i32 %35, label %40 [
    i32 0, label %36
    i32 6, label %37
  ]

36:                                               ; preds = %34
  br label %24, !llvm.loop !11

37:                                               ; preds = %34
  %38 = load i32, ptr @ans, align 4, !tbaa !5
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %38)
  ret i32 0

40:                                               ; preds = %34
  unreachable
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

declare i32 @printf(ptr noundef, ...) #3

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@used = external dso_local local_unnamed_addr global [1050 x i8], align 16
@s = external dso_local local_unnamed_addr global i32, align 4
@t = external dso_local local_unnamed_addr global i32, align 4
@ans = external dso_local local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7addEdgeiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8pushFlowii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m)
  store i32 1, ptr @s, align 4, !tbaa !5
  %5 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %5, ptr @t, align 4, !tbaa !5
  %6 = load i32, ptr @m, align 4, !tbaa !5
  %.not9 = icmp slt i32 %6, 1
  br i1 %.not9, label %.preheader, label %.lr.ph

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

.preheader:                                       ; preds = %.preheader.loopexit, %0
  %7 = phi i32 [ %.pre, %.preheader.loopexit ], [ 1, %0 ]
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1050) @used, i8 0, i64 1050, i1 false)
  %8 = call noundef i32 @_Z8pushFlowii(i32 noundef %7, i32 noundef 1000000000)
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %._crit_edge, label %.lr.ph11

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.0510 = phi i32 [ %14, %.lr.ph ], [ 1, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7addEdgeiii(i32 noundef %11, i32 noundef %12, i32 noundef %13)
  call void @llvm.lifetime.end.p0(i64 4, 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
  %14 = add nuw nsw i32 %.0510, 1
  %15 = load i32, ptr @m, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.0510, %15
  br i1 %.not.not, label %.lr.ph, label %.preheader.loopexit, !llvm.loop !9

.lr.ph11:                                         ; preds = %.preheader, %.lr.ph11
  %16 = phi i32 [ %20, %.lr.ph11 ], [ %8, %.preheader ]
  %17 = load i32, ptr @ans, align 4, !tbaa !5
  %18 = add nsw i32 %17, %16
  store i32 %18, ptr @ans, align 4, !tbaa !5
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1050) @used, i8 0, i64 1050, i1 false)
  %19 = load i32, ptr @s, align 4, !tbaa !5
  %20 = call noundef i32 @_Z8pushFlowii(i32 noundef %19, i32 noundef 1000000000)
  %21 = icmp eq i32 %20, 0
  br i1 %21, label %._crit_edge, label %.lr.ph11

._crit_edge:                                      ; preds = %.lr.ph11, %.preheader
  %22 = load i32, ptr @ans, align 4, !tbaa !5
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %22)
  ret i32 0
}

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

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

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

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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"}


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