; LLVM IR from microsoft/LightAIMD :: src (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"

@.str = external hidden unnamed_addr constant [3 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: 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 @read_file_to_buffer_ot(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  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 8, ptr %7) #3
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call noalias ptr @fopen(ptr noundef %9, ptr noundef @.str)
  store ptr %10, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %7, align 8, !tbaa !5
  %12 = icmp eq ptr null, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store i32 1, ptr %8, align 4
  br label %50

14:                                               ; preds = %3
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = call i32 @fseek(ptr noundef %15, i64 noundef 0, i32 noundef 2)
  %17 = load ptr, ptr %7, align 8, !tbaa !5
  %18 = call i64 @ftell(ptr noundef %17)
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 %18, ptr %19, align 8, !tbaa !9
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = call i32 @fseek(ptr noundef %20, i64 noundef 0, i32 noundef 0)
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %22, align 8, !tbaa !9
  %24 = call ptr @x_malloc(i64 noundef %23)
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %24, ptr %25, align 8, !tbaa !5
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  %28 = icmp eq ptr null, %27
  br i1 %28, label %29, label %32

29:                                               ; preds = %14
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = call i32 @fclose(ptr noundef %30)
  store i32 1, ptr %8, align 4
  br label %50

32:                                               ; preds = %14
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = load ptr, ptr %33, align 8, !tbaa !5
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load i64, ptr %35, align 8, !tbaa !9
  %37 = load ptr, ptr %7, align 8, !tbaa !5
  %38 = call i64 @fread(ptr noundef %34, i64 noundef 1, i64 noundef %36, ptr noundef %37)
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = load i64, ptr %39, align 8, !tbaa !9
  %41 = icmp ne i64 %38, %40
  br i1 %41, label %42, label %47

42:                                               ; preds = %32
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = load ptr, ptr %43, align 8, !tbaa !5
  call void @x_free(ptr noundef %44)
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr null, ptr %45, align 8, !tbaa !5
  %46 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 0, ptr %46, align 8, !tbaa !9
  br label %47

47:                                               ; preds = %42, %32
  %48 = load ptr, ptr %7, align 8, !tbaa !5
  %49 = call i32 @fclose(ptr noundef %48)
  store i32 0, ptr %8, align 4
  br label %50

50:                                               ; preds = %47, %29, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  %51 = load i32, ptr %8, align 4
  switch i32 %51, label %53 [
    i32 0, label %52
    i32 1, label %52
  ]

52:                                               ; preds = %50, %50
  ret void

53:                                               ; preds = %50
  unreachable
}

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 ptr @x_malloc(i64 noundef) #2

declare i32 @fclose(ptr noundef) #2

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

declare void @x_free(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = !{!"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: nounwind uwtable
define dso_local void @read_file_to_buffer_ot(ptr nocapture noundef readonly %0, ptr nocapture noundef %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %4 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str)
  %5 = icmp eq ptr %4, null
  br i1 %5, label %20, label %6

6:                                                ; preds = %3
  %7 = tail call i32 @fseek(ptr noundef nonnull %4, i64 noundef 0, i32 noundef 2)
  %8 = tail call i64 @ftell(ptr noundef nonnull %4)
  store i64 %8, ptr %2, align 8, !tbaa !5
  %9 = tail call i32 @fseek(ptr noundef nonnull %4, i64 noundef 0, i32 noundef 0)
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = tail call ptr @x_malloc(i64 noundef %10) #3
  store ptr %11, ptr %1, align 8, !tbaa !9
  %12 = icmp eq ptr %11, null
  br i1 %12, label %.sink.split, label %13

13:                                               ; preds = %6
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = tail call i64 @fread(ptr noundef nonnull %11, i64 noundef 1, i64 noundef %14, ptr noundef nonnull %4)
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i64 %15, %16
  br i1 %.not, label %.sink.split, label %17

17:                                               ; preds = %13
  %18 = load ptr, ptr %1, align 8, !tbaa !9
  tail call void @x_free(ptr noundef %18) #3
  store ptr null, ptr %1, align 8, !tbaa !9
  store i64 0, ptr %2, align 8, !tbaa !5
  br label %.sink.split

.sink.split:                                      ; preds = %13, %17, %6
  %19 = tail call i32 @fclose(ptr noundef nonnull %4)
  br label %20

20:                                               ; preds = %.sink.split, %3
  ret void
}

; 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

declare ptr @x_malloc(i64 noundef) local_unnamed_addr #2

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

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

declare void @x_free(ptr noundef) local_unnamed_addr #2

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 = { 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 = { "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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


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