; LLVM IR from kala13x/libxutils :: src/data (str)

; 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"

; 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 uwtable
define dso_local zeroext i8 @xstrncmp(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca i8, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %17

11:                                               ; preds = %3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %17

14:                                               ; preds = %11
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %18, label %17

17:                                               ; preds = %14, %11, %3
  store i8 0, ptr %4, align 1
  br label %28

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i64, ptr %7, align 8, !tbaa !9
  %22 = call i32 @strncmp(ptr noundef %19, ptr noundef %20, i64 noundef %21) #4
  store i32 %22, ptr %8, align 4, !tbaa !11
  %23 = load i32, ptr %8, align 4, !tbaa !11
  %24 = icmp ne i32 %23, 0
  %25 = zext i1 %24 to i64
  %26 = select i1 %24, i32 0, i32 1
  %27 = trunc i32 %26 to i8
  store i8 %27, ptr %4, align 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %28

28:                                               ; preds = %18, %17
  %29 = load i8, ptr %4, align 1
  ret i8 %29
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strncmp(ptr noundef, ptr noundef, i64 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 #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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read) uwtable
define dso_local zeroext range(i8 0, 2) i8 @xstrncmp(ptr noundef readonly %0, ptr noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %0, null
  %5 = icmp ne ptr %1, null
  %or.cond = and i1 %4, %5
  %6 = icmp ne i64 %2, 0
  %or.cond3 = and i1 %or.cond, %6
  br i1 %or.cond3, label %7, label %10

7:                                                ; preds = %3
  %8 = tail call i32 @strncmp(ptr noundef nonnull %0, ptr noundef nonnull %1, i64 noundef %2) #2
  %.not = icmp eq i32 %8, 0
  %9 = zext i1 %.not to i8
  br label %10

10:                                               ; preds = %3, %7
  %.0 = phi i8 [ %9, %7 ], [ 0, %3 ]
  ret i8 %.0
}

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

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: 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 #1 = { 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 #2 = { 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)"}


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