; LLVM IR from justinxu9905/bustub-2022-fall :: third_party/utf8proc/bench (util)

; 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.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @readfile(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %struct.stat, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store i64 0, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 144, ptr %6) #5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call i32 @stat(ptr noundef %11, ptr noundef %6) #5
  %13 = icmp ne i32 0, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %49

15:                                               ; preds = %2
  %16 = getelementptr inbounds %struct.stat, ptr %6, i32 0, i32 8
  %17 = load i64, ptr %16, align 8, !tbaa !11
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  store i64 %17, ptr %18, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = call noalias ptr @fopen(ptr noundef %19, ptr noundef @.str)
  store ptr %20, ptr %8, align 8, !tbaa !5
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = icmp ne ptr %21, null
  br i1 %22, label %24, label %23

23:                                               ; preds = %15
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %48

24:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load i64, ptr %25, align 8, !tbaa !9
  %27 = mul i64 1, %26
  %28 = call noalias ptr @malloc(i64 noundef %27) #6
  store ptr %28, ptr %9, align 8, !tbaa !5
  %29 = load ptr, ptr %9, align 8, !tbaa !5
  %30 = icmp ne ptr %29, null
  br i1 %30, label %32, label %31

31:                                               ; preds = %24
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %47

32:                                               ; preds = %24
  %33 = load ptr, ptr %9, align 8, !tbaa !5
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i64, ptr %34, align 8, !tbaa !9
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  %37 = call i64 @fread(ptr noundef %33, i64 noundef 1, i64 noundef %35, ptr noundef %36)
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = load i64, ptr %38, align 8, !tbaa !9
  %40 = icmp ne i64 %37, %39
  br i1 %40, label %41, label %43

41:                                               ; preds = %32
  %42 = load ptr, ptr %9, align 8, !tbaa !5
  call void @free(ptr noundef %42) #5
  store ptr null, ptr %9, align 8, !tbaa !5
  br label %43

43:                                               ; preds = %41, %32
  %44 = load ptr, ptr %8, align 8, !tbaa !5
  %45 = call i32 @fclose(ptr noundef %44)
  %46 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %46, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %47

47:                                               ; preds = %43, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  br label %48

48:                                               ; preds = %47, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  br label %49

49:                                               ; preds = %48, %14
  call void @llvm.lifetime.end.p0(i64 144, ptr %6) #5
  %50 = load ptr, ptr %3, align 8
  ret ptr %50
}

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

; Function Attrs: nounwind
declare i32 @stat(ptr noundef, ptr noundef) #2

declare noalias ptr @fopen(ptr noundef, ptr noundef) #3

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

declare i64 @fread(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #3

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

declare i32 @fclose(ptr noundef) #3

; 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 = { 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 = { "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, !10, i64 48}
!12 = !{!"stat", !10, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !13, i64 28, !13, i64 32, !13, i64 36, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !14, i64 72, !14, i64 88, !14, i64 104, !7, i64 120}
!13 = !{!"int", !7, i64 0}
!14 = !{!"timespec", !10, i64 0, !10, i64 8}


; 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"

%struct.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @readfile(ptr nocapture noundef readonly %0, ptr nocapture noundef %1) local_unnamed_addr #0 {
  %3 = alloca %struct.stat, align 8
  store i64 0, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 144, ptr nonnull %3) #5
  %4 = call i32 @stat(ptr noundef %0, ptr noundef nonnull %3) #5
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %5, label %18

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %3, i64 48
  %7 = load i64, ptr %6, align 8, !tbaa !9
  store i64 %7, ptr %1, align 8, !tbaa !5
  %8 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str)
  %.not18 = icmp eq ptr %8, null
  br i1 %.not18, label %18, label %9

9:                                                ; preds = %5
  %10 = load i64, ptr %1, align 8, !tbaa !5
  %11 = tail call noalias ptr @malloc(i64 noundef %10) #6
  %.not19 = icmp eq ptr %11, null
  br i1 %.not19, label %18, label %12

12:                                               ; preds = %9
  %13 = tail call i64 @fread(ptr noundef nonnull %11, i64 noundef 1, i64 noundef %10, ptr noundef nonnull %8)
  %14 = load i64, ptr %1, align 8, !tbaa !5
  %.not20 = icmp eq i64 %13, %14
  br i1 %.not20, label %16, label %15

15:                                               ; preds = %12
  tail call void @free(ptr noundef nonnull %11) #5
  br label %16

16:                                               ; preds = %15, %12
  %.0 = phi ptr [ null, %15 ], [ %11, %12 ]
  %17 = tail call i32 @fclose(ptr noundef nonnull %8)
  br label %18

18:                                               ; preds = %5, %9, %16, %2
  %.2 = phi ptr [ null, %2 ], [ null, %5 ], [ %.0, %16 ], [ null, %9 ]
  call void @llvm.lifetime.end.p0(i64 144, ptr nonnull %3) #5
  ret ptr %.2
}

; 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 noundef i32 @stat(ptr nocapture noundef readonly, ptr nocapture noundef) local_unnamed_addr #2

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

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

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #4

; 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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, 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 #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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 48}
!10 = !{!"stat", !6, i64 0, !6, i64 8, !6, i64 16, !11, i64 24, !11, i64 28, !11, i64 32, !11, i64 36, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !12, i64 72, !12, i64 88, !12, i64 104, !7, i64 120}
!11 = !{!"int", !7, i64 0}
!12 = !{!"timespec", !6, i64 0, !6, i64 8}


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