; LLVM IR from GGiecold-zz/Cluster_Ensembles :: src/Cluster_Ensembles/Hypergraph_Partitioning/metis-5.1.0/programs (io)

; 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.graph_t = type { i32, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, i32, ptr, ptr, i32, i32, ptr, ptr, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@__func__.ReadPOVector = external hidden unnamed_addr constant [13 x i8], align 1
@.str.56 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.57 = external hidden unnamed_addr constant [54 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare void @errexit(ptr noundef, ...) #1

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

declare void @gk_fclose(ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @ReadPOVector(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call ptr @gk_fopen(ptr noundef %9, ptr noundef @.str.1, ptr noundef @__func__.ReadPOVector)
  store ptr %10, ptr %8, align 8, !tbaa !5
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %32, %3
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.graph_t, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !11
  %16 = icmp slt i32 %12, %15
  br i1 %16, label %17, label %35

17:                                               ; preds = %11
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = call i32 (ptr, ptr, ...) @__isoc99_fscanf(ptr noundef %18, ptr noundef @.str.56, ptr noundef %22)
  %24 = icmp ne i32 %23, 1
  br i1 %24, label %25, label %31

25:                                               ; preds = %17
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.graph_t, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !11
  call void (ptr, ...) @errexit(ptr noundef @.str.57, ptr noundef @__func__.ReadPOVector, ptr noundef %26, i32 noundef %27, i32 noundef %30)
  br label %31

31:                                               ; preds = %25, %17
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !13

35:                                               ; preds = %11
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  call void @gk_fclose(ptr noundef %36)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret void
}

declare i32 @__isoc99_fscanf(ptr noundef, ptr noundef, ...) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #3 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"graph_t", !10, i64 0, !10, i64 4, !10, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !10, i64 72, !10, i64 76, !10, i64 80, !10, i64 84, !10, i64 88, !6, i64 96, !6, i64 104, !10, i64 112, !10, i64 116, !6, i64 120, !6, i64 128, !10, i64 136, !6, i64 144, !6, i64 152, !6, i64 160, !6, i64 168, !6, i64 176, !6, i64 184, !6, i64 192, !6, i64 200, !6, i64 208}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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"

@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@__func__.ReadPOVector = external hidden unnamed_addr constant [13 x i8], align 1
@.str.56 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.57 = external hidden unnamed_addr constant [54 x i8], align 1

declare void @errexit(ptr noundef, ...) local_unnamed_addr #0

declare ptr @gk_fopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

declare void @gk_fclose(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ReadPOVector(ptr nocapture noundef readonly %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #1 {
  %4 = tail call ptr @gk_fopen(ptr noundef %1, ptr noundef nonnull @.str.1, ptr noundef nonnull @__func__.ReadPOVector) #2
  %5 = load i32, ptr %0, align 8, !tbaa !5
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %12
  %indvars.iv = phi i64 [ %indvars.iv.next, %12 ], [ 0, %3 ]
  %7 = getelementptr inbounds i32, ptr %2, i64 %indvars.iv
  %8 = tail call i32 (ptr, ptr, ...) @__isoc99_fscanf(ptr noundef %4, ptr noundef nonnull @.str.56, ptr noundef %7) #2
  %.not = icmp eq i32 %8, 1
  br i1 %.not, label %12, label %9

9:                                                ; preds = %.lr.ph
  %10 = load i32, ptr %0, align 8, !tbaa !5
  %11 = trunc nuw nsw i64 %indvars.iv to i32
  tail call void (ptr, ...) @errexit(ptr noundef nonnull @.str.57, ptr noundef nonnull @__func__.ReadPOVector, ptr noundef %1, i32 noundef %11, i32 noundef %10) #2
  br label %12

12:                                               ; preds = %.lr.ph, %9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = load i32, ptr %0, align 8, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = icmp slt i64 %indvars.iv.next, %14
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %12, %3
  tail call void @gk_fclose(ptr noundef %4) #2
  ret void
}

declare i32 @__isoc99_fscanf(ptr noundef, ptr noundef, ...) local_unnamed_addr #0

attributes #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 = { 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 #2 = { 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, !7, i64 0}
!6 = !{!"graph_t", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !7, i64 72, !7, i64 76, !7, i64 80, !7, i64 84, !7, i64 88, !10, i64 96, !10, i64 104, !7, i64 112, !7, i64 116, !10, i64 120, !10, i64 128, !7, i64 136, !10, i64 144, !10, i64 152, !10, i64 160, !10, i64 168, !10, i64 176, !10, i64 184, !10, i64 192, !10, i64 200, !10, i64 208}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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