; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Algorithms/ArraysAlg/Sources (CharArrayAlg)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.24 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.25 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.26 = external hidden unnamed_addr constant [33 x i8], align 1
@.str.27 = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @generateCharPointerP(ptr noundef %0, i32 noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %11

8:                                                ; preds = %2
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef @.str, ptr noundef @.str.7, ptr noundef @.str.24) #5
  call void @exit(i32 noundef -83386157) #6
  unreachable

11:                                               ; preds = %2
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = icmp slt i32 %12, 0
  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 @.str.4, ptr noundef @.str.25, ptr noundef @.str.24) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

17:                                               ; preds = %11
  br label %18

18:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  %21 = sext i32 %20 to i64
  %22 = mul i64 1, %21
  %23 = call noalias ptr @malloc(i64 noundef %22) #7
  store ptr %23, ptr %5, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = icmp eq ptr %24, null
  br i1 %25, label %26, label %29

26:                                               ; preds = %18
  %27 = load ptr, ptr @stderr, align 8, !tbaa !5
  %28 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %27, ptr noundef @.str.26, ptr noundef @.str.27, ptr noundef @.str.24) #5
  call void @exit(i32 noundef -833811484) #6
  unreachable

29:                                               ; preds = %18
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = call ptr @strcpy(ptr noundef %30, ptr noundef %31) #5
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  ret ptr %33
}

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

; Function Attrs: nounwind
declare ptr @strcpy(ptr noundef, ptr noundef) #0

attributes #0 = { 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 #1 = { noreturn 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 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 = { noreturn 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, !10, i64 0}
!10 = !{!"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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.24 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.25 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.26 = external hidden unnamed_addr constant [33 x i8], align 1
@.str.27 = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @generateCharPointerP(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str, ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.24) #5
  tail call void @exit(i32 noundef -83386157) #6
  unreachable

7:                                                ; preds = %2
  %8 = icmp slt i32 %1, 0
  br i1 %8, label %9, label %12

9:                                                ; preds = %7
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.25, ptr noundef nonnull @.str.24) #5
  tail call void @exit(i32 noundef -83384987) #6
  unreachable

12:                                               ; preds = %7
  %13 = add nuw nsw i32 %1, 1
  %14 = zext nneg i32 %13 to i64
  %15 = tail call noalias ptr @malloc(i64 noundef %14) #7
  %16 = icmp eq ptr %15, null
  br i1 %16, label %17, label %20

17:                                               ; preds = %12
  %18 = load ptr, ptr @stderr, align 8, !tbaa !5
  %19 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef nonnull @.str.26, ptr noundef nonnull @.str.27, ptr noundef nonnull @.str.24) #5
  tail call void @exit(i32 noundef -833811484) #6
  unreachable

20:                                               ; preds = %12
  %21 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %15, ptr noundef nonnull dereferenceable(1) %0) #8
  ret ptr %15
}

; 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: mustprogress nofree nounwind willreturn memory(argmem: readwrite)
declare ptr @strcpy(ptr noalias noundef returned writeonly, ptr noalias nocapture noundef readonly) local_unnamed_addr #4

attributes #0 = { 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 #1 = { noreturn 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 = { 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 #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 nofree nounwind willreturn memory(argmem: readwrite) "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 = { cold nounwind }
attributes #6 = { noreturn nounwind }
attributes #7 = { nounwind allocsize(0) }
attributes #8 = { 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"}


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