; LLVM IR from Water-Melon/Melon :: src (mln_string)

; 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.mln_string_t = type { ptr, i64, i32 }

; 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 willreturn memory(read)
declare i64 @strlen(ptr noundef) #1

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strncasecmp(ptr noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mln_string_const_strcasecmp(ptr noundef nonnull %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.mln_string_t, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = icmp eq ptr %10, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %42

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = call i64 @strlen(ptr noundef %15) #4
  %17 = trunc i64 %16 to i32
  store i32 %17, ptr %6, align 4, !tbaa !12
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.mln_string_t, ptr %18, i32 0, i32 1
  %20 = load i64, ptr %19, align 8, !tbaa !14
  %21 = load i32, ptr %6, align 4, !tbaa !12
  %22 = zext i32 %21 to i64
  %23 = icmp ugt i64 %20, %22
  br i1 %23, label %24, label %25

24:                                               ; preds = %14
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %41

25:                                               ; preds = %14
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.mln_string_t, ptr %26, i32 0, i32 1
  %28 = load i64, ptr %27, align 8, !tbaa !14
  %29 = load i32, ptr %6, align 4, !tbaa !12
  %30 = zext i32 %29 to i64
  %31 = icmp ult i64 %28, %30
  br i1 %31, label %32, label %33

32:                                               ; preds = %25
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %41

33:                                               ; preds = %25
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.mln_string_t, ptr %34, i32 0, i32 0
  %36 = load ptr, ptr %35, align 8, !tbaa !9
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load i32, ptr %6, align 4, !tbaa !12
  %39 = zext i32 %38 to i64
  %40 = call i32 @strncasecmp(ptr noundef %36, ptr noundef %37, i64 noundef %39) #4
  store i32 %40, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %41

41:                                               ; preds = %33, %32, %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %42

42:                                               ; preds = %41, %13
  %43 = load i32, ptr %3, align 4
  ret i32 %43
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) "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 = { nounwind willreturn memory(read) }

!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, !6, i64 0}
!10 = !{!"", !6, i64 0, !11, i64 8, !11, i64 16, !11, i64 16, !11, i64 16}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!10, !11, 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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(read)
declare i32 @strncasecmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(read) uwtable
define dso_local i32 @mln_string_const_strcasecmp(ptr nocapture noundef nonnull readonly %0, ptr noundef readonly %1) local_unnamed_addr #2 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp eq ptr %3, %1
  br i1 %4, label %15, label %5

5:                                                ; preds = %2
  %6 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = and i64 %6, 4294967295
  %10 = icmp ugt i64 %8, %9
  br i1 %10, label %15, label %11

11:                                               ; preds = %5
  %12 = icmp ult i64 %8, %9
  br i1 %12, label %15, label %13

13:                                               ; preds = %11
  %14 = tail call i32 @strncasecmp(ptr noundef %3, ptr noundef %1, i64 noundef %9) #3
  br label %15

15:                                               ; preds = %13, %5, %11, %2
  %.1 = phi i32 [ 0, %2 ], [ %14, %13 ], [ 1, %5 ], [ -1, %11 ]
  ret i32 %.1
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 nofree nounwind willreturn memory(read) "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 nofree nounwind willreturn memory(read) 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 willreturn memory(read) }

!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, !7, i64 0}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 16, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}


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