; LLVM IR from tessarin/dither :: src (DTImage)

; 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.DTImage = type { i32, i32, i32, i64, ptr }

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [26 x i8], align 1
@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [31 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @CreateImageFromFile(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca [8 x i8], align 1
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = call noalias ptr @fopen(ptr noundef %10, ptr noundef @.str)
  store ptr %11, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %1
  call void @perror(ptr noundef @.str.1)
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %50

15:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = call i64 @fread(ptr noundef %6, i64 noundef 1, i64 noundef 8, ptr noundef %16)
  store i64 %17, ptr %7, align 8, !tbaa !9
  %18 = load i64, ptr %7, align 8, !tbaa !9
  %19 = icmp ne i64 %18, 8
  br i1 %19, label %20, label %23

20:                                               ; preds = %15
  %21 = load ptr, ptr @stderr, align 8, !tbaa !5
  %22 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %21, ptr noundef @.str.2) #5
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %49

23:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %24 = getelementptr inbounds [8 x i8], ptr %6, i64 0, i64 0
  %25 = call i32 @IdentifyImageType(ptr noundef %24)
  store i32 %25, ptr %8, align 4, !tbaa !11
  %26 = load i32, ptr %8, align 4, !tbaa !11
  %27 = icmp eq i32 %26, 2
  br i1 %27, label %28, label %31

28:                                               ; preds = %23
  %29 = load ptr, ptr @stderr, align 8, !tbaa !5
  %30 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %29, ptr noundef @.str.3) #5
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %48

31:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %32 = call noalias ptr @malloc(i64 noundef 32) #6
  store ptr %32, ptr %9, align 8, !tbaa !5
  %33 = load i32, ptr %8, align 4, !tbaa !11
  %34 = load ptr, ptr %9, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.DTImage, ptr %34, i32 0, i32 2
  store i32 %33, ptr %35, align 8, !tbaa !13
  %36 = load ptr, ptr %9, align 8, !tbaa !5
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = call i32 @ReadDataFromFile(ptr noundef %36, ptr noundef %37)
  %39 = icmp ne i32 %38, 0
  br i1 %39, label %40, label %43

40:                                               ; preds = %31
  %41 = load ptr, ptr @stderr, align 8, !tbaa !5
  %42 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %41, ptr noundef @.str.4) #5
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %47

43:                                               ; preds = %31
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = call i32 @fclose(ptr noundef %44)
  %46 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %46, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %47

47:                                               ; preds = %43, %40
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  br label %48

48:                                               ; preds = %47, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %49

49:                                               ; preds = %48, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br label %50

50:                                               ; preds = %49, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  %51 = load ptr, ptr %2, align 8
  ret ptr %51
}

; 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 void @perror(ptr noundef) #2

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

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @IdentifyImageType(ptr noundef) #0

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local i32 @ReadDataFromFile(ptr noundef, ptr noundef) #0

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 = { 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 = { 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 = { 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 = { nounwind allocsize(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 }
attributes #6 = { nounwind allocsize(0) }

!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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !12, i64 8}
!14 = !{!"", !12, i64 0, !12, i64 4, !12, i64 8, !10, i64 16, !6, i64 24}


; 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
@.str.1 = external hidden unnamed_addr constant [26 x i8], align 1
@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [31 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @CreateImageFromFile(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = alloca [8 x i8], align 1
  %3 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str)
  %4 = icmp eq ptr %3, null
  br i1 %4, label %5, label %6

5:                                                ; preds = %1
  tail call void @perror(ptr noundef nonnull @.str.1) #4
  br label %27

6:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %7 = call i64 @fread(ptr noundef nonnull %2, i64 noundef 1, i64 noundef 8, ptr noundef nonnull %3)
  %.not = icmp eq i64 %7, 8
  br i1 %.not, label %11, label %8

8:                                                ; preds = %6
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef nonnull @.str.2) #6
  br label %26

11:                                               ; preds = %6
  %12 = call i32 @IdentifyImageType(ptr noundef nonnull %2)
  %13 = icmp eq i32 %12, 2
  br i1 %13, label %14, label %17

14:                                               ; preds = %11
  %15 = load ptr, ptr @stderr, align 8, !tbaa !5
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %15, ptr noundef nonnull @.str.3) #6
  br label %26

17:                                               ; preds = %11
  %18 = call noalias dereferenceable_or_null(32) ptr @malloc(i64 noundef 32) #7
  %19 = getelementptr inbounds i8, ptr %18, i64 8
  store i32 %12, ptr %19, align 8, !tbaa !9
  %20 = call i32 @ReadDataFromFile(ptr noundef %18, ptr noundef nonnull %3)
  %.not13 = icmp eq i32 %20, 0
  br i1 %.not13, label %24, label %21

21:                                               ; preds = %17
  %22 = load ptr, ptr @stderr, align 8, !tbaa !5
  %23 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef nonnull @.str.4) #6
  br label %26

24:                                               ; preds = %17
  %25 = call i32 @fclose(ptr noundef nonnull %3)
  br label %26

26:                                               ; preds = %14, %24, %21, %8
  %.2 = phi ptr [ null, %8 ], [ null, %14 ], [ null, %21 ], [ %18, %24 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  br label %27

27:                                               ; preds = %26, %5
  %.3 = phi ptr [ null, %5 ], [ %.2, %26 ]
  ret ptr %.3
}

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

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare void @perror(ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @IdentifyImageType(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @ReadDataFromFile(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #2

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

attributes #0 = { 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 }
attributes #5 = { nounwind }
attributes #6 = { cold nounwind }
attributes #7 = { nounwind allocsize(0) }

!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, !11, i64 8}
!10 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8, !12, i64 16, !6, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}


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