; LLVM IR from kajott/GIPS :: src/string_util.ll (ZN10StringUtil12loadTextFileEPKcPi)

; 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 allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN10StringUtil12loadTextFileEPKcPi(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %18

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %14, i64 0
  %16 = load i8, ptr %15, align 1, !tbaa !9
  %17 = icmp ne i8 %16, 0
  br i1 %17, label %19, label %18

18:                                               ; preds = %13, %2
  store ptr null, ptr %3, align 8
  br label %67

19:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = call noalias ptr @fopen(ptr noundef %20, ptr noundef @.str)
  store ptr %21, ptr %6, align 8, !tbaa !5
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = icmp ne ptr %22, null
  br i1 %23, label %25, label %24

24:                                               ; preds = %19
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %66

25:                                               ; preds = %19
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = call i32 @fseek(ptr noundef %26, i64 noundef 0, i32 noundef 2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = call i64 @ftell(ptr noundef %28)
  store i64 %29, ptr %8, align 8, !tbaa !10
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = call i32 @fseek(ptr noundef %30, i64 noundef 0, i32 noundef 0)
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %32 = load i64, ptr %8, align 8, !tbaa !10
  %33 = add i64 %32, 1
  %34 = call noalias ptr @malloc(i64 noundef %33) #6
  store ptr %34, ptr %9, align 8, !tbaa !5
  %35 = load ptr, ptr %9, align 8, !tbaa !5
  %36 = icmp ne ptr %35, null
  br i1 %36, label %40, label %37

37:                                               ; preds = %25
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = call i32 @fclose(ptr noundef %38)
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %65

40:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  %42 = load i64, ptr %8, align 8, !tbaa !10
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = call i64 @fread(ptr noundef %41, i64 noundef 1, i64 noundef %42, ptr noundef %43)
  store i64 %44, ptr %10, align 8, !tbaa !10
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  %46 = call i32 @fclose(ptr noundef %45)
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  %48 = icmp ne ptr %47, null
  br i1 %48, label %49, label %53

49:                                               ; preds = %40
  %50 = load i64, ptr %10, align 8, !tbaa !10
  %51 = trunc i64 %50 to i32
  %52 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %51, ptr %52, align 4, !tbaa !12
  br label %53

53:                                               ; preds = %49, %40
  %54 = load i64, ptr %10, align 8, !tbaa !10
  %55 = load i64, ptr %8, align 8, !tbaa !10
  %56 = icmp ne i64 %54, %55
  br i1 %56, label %57, label %59

57:                                               ; preds = %53
  %58 = load ptr, ptr %9, align 8, !tbaa !5
  call void @free(ptr noundef %58) #5
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %64

59:                                               ; preds = %53
  %60 = load ptr, ptr %9, align 8, !tbaa !5
  %61 = load i64, ptr %8, align 8, !tbaa !10
  %62 = getelementptr inbounds i8, ptr %60, i64 %61
  store i8 0, ptr %62, align 1, !tbaa !9
  %63 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %63, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %64

64:                                               ; preds = %59, %57
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  br label %65

65:                                               ; preds = %64, %37
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  br label %66

66:                                               ; preds = %65, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br label %67

67:                                               ; preds = %66, %18
  %68 = load ptr, ptr %3, align 8
  ret ptr %68
}

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

declare i32 @fseek(ptr noundef, i64 noundef, i32 noundef) #3

declare i64 @ftell(ptr noundef) #3

declare i32 @fclose(ptr noundef) #3

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

; Function Attrs: nounwind
declare void @free(ptr noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 "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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noalias noundef ptr @_ZN10StringUtil12loadTextFileEPKcPi(ptr noundef readonly %0, ptr noundef writeonly %1) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %24, label %3

3:                                                ; preds = %2
  %4 = load i8, ptr %0, align 1, !tbaa !5
  %.not28 = icmp eq i8 %4, 0
  br i1 %.not28, label %24, label %5

5:                                                ; preds = %3
  %6 = tail call noalias ptr @fopen(ptr noundef nonnull %0, ptr noundef nonnull @.str)
  %.not29 = icmp eq ptr %6, null
  br i1 %.not29, label %24, label %7

7:                                                ; preds = %5
  %8 = tail call i32 @fseek(ptr noundef nonnull %6, i64 noundef 0, i32 noundef 2)
  %9 = tail call i64 @ftell(ptr noundef nonnull %6)
  %10 = tail call i32 @fseek(ptr noundef nonnull %6, i64 noundef 0, i32 noundef 0)
  %11 = add i64 %9, 1
  %12 = tail call noalias ptr @malloc(i64 noundef %11) #4
  %.not30 = icmp eq ptr %12, null
  br i1 %.not30, label %13, label %15

13:                                               ; preds = %7
  %14 = tail call i32 @fclose(ptr noundef nonnull %6)
  br label %24

15:                                               ; preds = %7
  %16 = tail call i64 @fread(ptr noundef nonnull %12, i64 noundef 1, i64 noundef %9, ptr noundef nonnull %6)
  %17 = tail call i32 @fclose(ptr noundef nonnull %6)
  %.not31 = icmp eq ptr %1, null
  br i1 %.not31, label %20, label %18

18:                                               ; preds = %15
  %19 = trunc i64 %16 to i32
  store i32 %19, ptr %1, align 4, !tbaa !8
  br label %20

20:                                               ; preds = %18, %15
  %.not32 = icmp eq i64 %16, %9
  br i1 %.not32, label %22, label %21

21:                                               ; preds = %20
  tail call void @free(ptr noundef nonnull %12) #5
  br label %24

22:                                               ; preds = %20
  %23 = getelementptr inbounds i8, ptr %12, i64 %9
  store i8 0, ptr %23, align 1, !tbaa !5
  br label %24

24:                                               ; preds = %5, %21, %22, %13, %2, %3
  %.3 = phi ptr [ null, %3 ], [ null, %2 ], [ null, %5 ], [ null, %13 ], [ null, %21 ], [ %12, %22 ]
  ret ptr %.3
}

; 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 noundef i32 @fseek(ptr nocapture noundef, i64 noundef, i32 noundef) local_unnamed_addr #2

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

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) 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: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #3

attributes #0 = { 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 #1 = { 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 #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 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 #4 = { nounwind allocsize(0) }
attributes #5 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}


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