; 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_strncasecmp(ptr noundef nonnull %0, ptr noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.mln_string_t, ptr %10, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp eq ptr %12, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  br label %40

16:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call i64 @strlen(ptr noundef %17) #4
  %19 = trunc i64 %18 to i32
  store i32 %19, ptr %8, align 4, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.mln_string_t, ptr %20, i32 0, i32 1
  %22 = load i64, ptr %21, align 8, !tbaa !14
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = zext i32 %23 to i64
  %25 = icmp ult i64 %22, %24
  br i1 %25, label %30, label %26

26:                                               ; preds = %16
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = icmp ult i32 %27, %28
  br i1 %29, label %30, label %31

30:                                               ; preds = %26, %16
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %39

31:                                               ; preds = %26
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.mln_string_t, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !11
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = zext i32 %36 to i64
  %38 = call i32 @strncasecmp(ptr noundef %34, ptr noundef %35, i64 noundef %37) #4
  store i32 %38, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %39

39:                                               ; preds = %31, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %40

40:                                               ; preds = %39, %15
  %41 = load i32, ptr %4, align 4
  ret i32 %41
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"", !6, i64 0, !13, i64 8, !13, i64 16, !13, i64 16, !13, i64 16}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, 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_strncasecmp(ptr nocapture noundef nonnull readonly %0, ptr noundef readonly %1, i32 noundef %2) local_unnamed_addr #2 {
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %5 = icmp eq ptr %4, %1
  br i1 %5, label %17, label %6

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = zext i32 %2 to i64
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %17, label %11

11:                                               ; preds = %6
  %12 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #3
  %13 = trunc i64 %12 to i32
  %14 = icmp ult i32 %13, %2
  br i1 %14, label %17, label %15

15:                                               ; preds = %11
  %16 = tail call i32 @strncasecmp(ptr noundef %4, ptr noundef %1, i64 noundef %9) #3
  br label %17

17:                                               ; preds = %15, %11, %6, %3
  %.1 = phi i32 [ 0, %3 ], [ %16, %15 ], [ -1, %11 ], [ -1, %6 ]
  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