; LLVM IR from CubbyFlow/RenderFlow :: Extensions/FlowEditor/sample_utils/file_png.ll (Z17lodepng_load_filePPhPmPKc)

; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z17lodepng_load_filePPhPmPKc(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr null, ptr %11, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 0, ptr %12, align 8, !tbaa !9
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = call noalias ptr @fopen(ptr noundef %13, ptr noundef @.str)
  store ptr %14, ptr %8, align 8, !tbaa !5
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %18, label %17

17:                                               ; preds = %3
  store i32 78, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %52

18:                                               ; preds = %3
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = call i32 @fseek(ptr noundef %19, i64 noundef 0, i32 noundef 2)
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = call i64 @ftell(ptr noundef %21)
  store i64 %22, ptr %9, align 8, !tbaa !9
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  call void @rewind(ptr noundef %23)
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 0, ptr %24, align 8, !tbaa !9
  %25 = load i64, ptr %9, align 8, !tbaa !9
  %26 = call noundef ptr @_ZL8mymallocm(i64 noundef %25)
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %26, ptr %27, align 8, !tbaa !5
  %28 = load i64, ptr %9, align 8, !tbaa !9
  %29 = icmp ne i64 %28, 0
  br i1 %29, label %30, label %41

30:                                               ; preds = %18
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = load ptr, ptr %31, align 8, !tbaa !5
  %33 = icmp ne ptr %32, null
  br i1 %33, label %34, label %41

34:                                               ; preds = %30
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load ptr, ptr %35, align 8, !tbaa !5
  %37 = load i64, ptr %9, align 8, !tbaa !9
  %38 = load ptr, ptr %8, align 8, !tbaa !5
  %39 = call i64 @fread(ptr noundef %36, i64 noundef 1, i64 noundef %37, ptr noundef %38)
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 %39, ptr %40, align 8, !tbaa !9
  br label %41

41:                                               ; preds = %34, %30, %18
  %42 = load ptr, ptr %8, align 8, !tbaa !5
  %43 = call i32 @fclose(ptr noundef %42)
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = load ptr, ptr %44, align 8, !tbaa !5
  %46 = icmp ne ptr %45, null
  br i1 %46, label %51, label %47

47:                                               ; preds = %41
  %48 = load i64, ptr %9, align 8, !tbaa !9
  %49 = icmp ne i64 %48, 0
  br i1 %49, label %50, label %51

50:                                               ; preds = %47
  store i32 83, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %52

51:                                               ; preds = %47, %41
  store i32 0, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %52

52:                                               ; preds = %51, %50, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %53 = load i32, ptr %4, align 4
  ret i32 %53
}

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

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

declare i32 @fseek(ptr noundef, i64 noundef, i32 noundef) #2

declare i64 @ftell(ptr noundef) #2

declare void @rewind(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef ptr @_ZL8mymallocm(i64 noundef) #3

declare i64 @fread(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #2

declare i32 @fclose(ptr noundef) #2

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

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 = { "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 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 = { 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 = !{!"long", !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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i32 0, 84) i32 @_Z17lodepng_load_filePPhPmPKc(ptr nocapture noundef %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  store ptr null, ptr %0, align 8, !tbaa !5
  store i64 0, ptr %1, align 8, !tbaa !9
  %4 = tail call noalias ptr @fopen(ptr noundef %2, ptr noundef nonnull @.str)
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %16, label %5

5:                                                ; preds = %3
  %6 = tail call i32 @fseek(ptr noundef nonnull %4, i64 noundef 0, i32 noundef 2)
  %7 = tail call i64 @ftell(ptr noundef nonnull %4)
  tail call void @rewind(ptr noundef nonnull %4)
  store i64 0, ptr %1, align 8, !tbaa !9
  %8 = tail call noundef ptr @_ZL8mymallocm(i64 noundef %7)
  store ptr %8, ptr %0, align 8, !tbaa !5
  %9 = icmp ne i64 %7, 0
  %.not23 = icmp ne ptr %8, null
  %or.cond25.not = and i1 %9, %.not23
  br i1 %or.cond25.not, label %10, label %12

10:                                               ; preds = %5
  %11 = tail call i64 @fread(ptr noundef nonnull %8, i64 noundef 1, i64 noundef %7, ptr noundef nonnull %4)
  store i64 %11, ptr %1, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %10, %5
  %13 = tail call i32 @fclose(ptr noundef nonnull %4)
  %14 = load ptr, ptr %0, align 8, !tbaa !5
  %15 = icmp eq ptr %14, null
  %or.cond = and i1 %9, %15
  %. = select i1 %or.cond, i32 83, i32 0
  br label %16

16:                                               ; preds = %12, %3
  %.0 = phi i32 [ 78, %3 ], [ %., %12 ]
  ret i32 %.0
}

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fseek(ptr nocapture noundef, i64 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i64 @ftell(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare void @rewind(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef ptr @_ZL8mymallocm(i64 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { 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 #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" }

!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 = !{!"long", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass