; 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.28 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.29 = external hidden unnamed_addr constant [21 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: nounwind uwtable
define dso_local i32 @isAlphabetP(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %5, label %8

5:                                                ; preds = %1
  %6 = load ptr, ptr @stderr, align 8, !tbaa !5
  %7 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %6, ptr noundef @.str, ptr noundef @.str.28, ptr noundef @.str.29) #3
  call void @exit(i32 noundef -83386157) #4
  unreachable

8:                                                ; preds = %1
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = sext i8 %10 to i32
  %12 = icmp sge i32 %11, 97
  br i1 %12, label %13, label %18

13:                                               ; preds = %8
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !9
  %16 = sext i8 %15 to i32
  %17 = icmp sle i32 %16, 122
  br i1 %17, label %30, label %18

18:                                               ; preds = %13, %8
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = load i8, ptr %19, align 1, !tbaa !9
  %21 = sext i8 %20 to i32
  %22 = icmp sge i32 %21, 65
  br i1 %22, label %23, label %28

23:                                               ; preds = %18
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = load i8, ptr %24, align 1, !tbaa !9
  %26 = sext i8 %25 to i32
  %27 = icmp sle i32 %26, 90
  br label %28

28:                                               ; preds = %23, %18
  %29 = phi i1 [ false, %18 ], [ %27, %23 ]
  br label %30

30:                                               ; preds = %28, %13
  %31 = phi i1 [ true, %13 ], [ %29, %28 ]
  %32 = zext i1 %31 to i32
  ret i32 %32
}

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 = { 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 = { nounwind }
attributes #4 = { noreturn 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 = !{!7, !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.28 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.29 = external hidden unnamed_addr constant [21 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 range(i32 0, 2) i32 @isAlphabetP(ptr noundef readonly %0) local_unnamed_addr #2 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %3, label %6

3:                                                ; preds = %1
  %4 = load ptr, ptr @stderr, align 8, !tbaa !5
  %5 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %4, ptr noundef nonnull @.str, ptr noundef nonnull @.str.28, ptr noundef nonnull @.str.29) #3
  tail call void @exit(i32 noundef -83386157) #4
  unreachable

6:                                                ; preds = %1
  %7 = load i8, ptr %0, align 1, !tbaa !9
  %8 = add i8 %7, -97
  %or.cond = icmp ult i8 %8, 26
  br i1 %or.cond, label %14, label %9

9:                                                ; preds = %6
  %10 = icmp sgt i8 %7, 64
  br i1 %10, label %11, label %14

11:                                               ; preds = %9
  %12 = icmp ult i8 %7, 91
  %13 = zext i1 %12 to i32
  br label %14

14:                                               ; preds = %6, %9, %11
  %15 = phi i32 [ 0, %9 ], [ %13, %11 ], [ 1, %6 ]
  ret i32 %15
}

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 = { cold nounwind }
attributes #4 = { noreturn 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 = !{!7, !7, i64 0}


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