; LLVM IR from rodrigo-lc/simulation-program-using-graphs :: include/graph (graph)

; 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.graphs = type { i32, ptr }

@stderr = external global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [29 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

; Function Attrs: noreturn nounwind
declare void @exit(i32 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
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @searchVertex(ptr noundef %0, i32 noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %15

12:                                               ; preds = %2
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef @.str.3) #5
  call void @exit(i32 noundef 1) #6
  unreachable

15:                                               ; preds = %2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.graphs, ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !11
  %19 = call i32 @isListEmpty(ptr noundef %18)
  %20 = icmp eq i32 %19, 1
  br i1 %20, label %21, label %22

21:                                               ; preds = %15
  store ptr null, ptr %3, align 8
  store i32 1, ptr %9, align 4
  br label %44

22:                                               ; preds = %15
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.graphs, ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  %26 = call ptr @getHead(ptr noundef %25)
  store ptr %26, ptr %6, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %40, %22
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %43

30:                                               ; preds = %27
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = call ptr @getData(ptr noundef %31)
  store ptr %32, ptr %7, align 8, !tbaa !5
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = call i32 @vertexGetID(ptr noundef %33)
  store i32 %34, ptr %8, align 4, !tbaa !9
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = icmp eq i32 %35, %36
  br i1 %37, label %38, label %40

38:                                               ; preds = %30
  %39 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %39, ptr %3, align 8
  store i32 1, ptr %9, align 4
  br label %44

40:                                               ; preds = %30
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = call ptr @getNext(ptr noundef %41)
  store ptr %42, ptr %6, align 8, !tbaa !5
  br label %27, !llvm.loop !13

43:                                               ; preds = %27
  store ptr null, ptr %3, align 8
  store i32 1, ptr %9, align 4
  br label %44

44:                                               ; preds = %43, %38, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %45 = load ptr, ptr %3, align 8
  ret ptr %45
}

declare i32 @isListEmpty(ptr noundef) #4

declare ptr @getHead(ptr noundef) #4

declare ptr @getData(ptr noundef) #4

declare i32 @vertexGetID(ptr noundef) #4

declare ptr @getNext(ptr noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn 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 #2 = { 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 #3 = { 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 = { "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 }
attributes #6 = { noreturn 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, !6, i64 8}
!12 = !{!"graphs", !10, i64 0, !6, i64 8}
!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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [29 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @searchVertex(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str.3) #4
  tail call void @exit(i32 noundef 1) #5
  unreachable

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = tail call i32 @isListEmpty(ptr noundef %9) #6
  %11 = icmp eq i32 %10, 1
  br i1 %11, label %.loopexit, label %12

12:                                               ; preds = %7
  %13 = load ptr, ptr %8, align 8, !tbaa !9
  %14 = tail call ptr @getHead(ptr noundef %13) #6
  %.not12 = icmp eq ptr %14, null
  br i1 %.not12, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %12, %18
  %.01013 = phi ptr [ %19, %18 ], [ %14, %12 ]
  %15 = tail call ptr @getData(ptr noundef nonnull %.01013) #6
  %16 = tail call i32 @vertexGetID(ptr noundef %15) #6
  %17 = icmp eq i32 %16, %1
  br i1 %17, label %.loopexit, label %18

18:                                               ; preds = %.lr.ph
  %19 = tail call ptr @getNext(ptr noundef nonnull %.01013) #6
  %.not = icmp eq ptr %19, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !12

.loopexit:                                        ; preds = %.lr.ph, %18, %12, %7
  %.0 = phi ptr [ null, %7 ], [ null, %12 ], [ %15, %.lr.ph ], [ null, %18 ]
  ret ptr %.0
}

declare i32 @isListEmpty(ptr noundef) local_unnamed_addr #3

declare ptr @getHead(ptr noundef) local_unnamed_addr #3

declare ptr @getData(ptr noundef) local_unnamed_addr #3

declare i32 @vertexGetID(ptr noundef) local_unnamed_addr #3

declare ptr @getNext(ptr noundef) local_unnamed_addr #3

attributes #0 = { noreturn 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 #1 = { 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 #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 = { "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 = { cold nounwind }
attributes #5 = { noreturn nounwind }
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/C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"graphs", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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