; 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
declare dso_local zeroext i8 @xstrnmatch(ptr noundef, i64 noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @xstrmatch(ptr noundef %0, i64 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i8, align 1
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %14

11:                                               ; preds = %3
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %15, label %14

14:                                               ; preds = %11, %3
  store i8 0, ptr %4, align 1
  br label %34

15:                                               ; preds = %11
  %16 = load i64, ptr %6, align 8, !tbaa !9
  %17 = icmp ne i64 %16, 0
  br i1 %17, label %26, label %18

18:                                               ; preds = %15
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = call zeroext i8 @xstrused(ptr noundef %19)
  %21 = icmp ne i8 %20, 0
  %22 = xor i1 %21, true
  %23 = zext i1 %22 to i64
  %24 = select i1 %22, i32 1, i32 0
  %25 = trunc i32 %24 to i8
  store i8 %25, ptr %4, align 1
  br label %34

26:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = call i64 @strlen(ptr noundef %27) #4
  store i64 %28, ptr %8, align 8, !tbaa !9
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = load i64, ptr %6, align 8, !tbaa !9
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = load i64, ptr %8, align 8, !tbaa !9
  %33 = call zeroext i8 @xstrnmatch(ptr noundef %29, i64 noundef %30, ptr noundef %31, i64 noundef %32)
  store i8 %33, ptr %4, align 1
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %34

34:                                               ; preds = %26, %18, %14
  %35 = load i8, ptr %4, align 1
  ret i8 %35
}

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @xstrused(ptr noundef) #1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr 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}


; 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: nounwind uwtable
declare dso_local zeroext i8 @xstrnmatch(ptr noundef, i64 noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @xstrmatch(ptr noundef %0, i64 noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %0, null
  %5 = icmp ne ptr %2, null
  %or.cond = and i1 %4, %5
  br i1 %or.cond, label %6, label %13

6:                                                ; preds = %3
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %7, label %10

7:                                                ; preds = %6
  %8 = tail call zeroext i8 @xstrused(ptr noundef nonnull %2)
  %.not13 = icmp eq i8 %8, 0
  %9 = zext i1 %.not13 to i8
  br label %13

10:                                               ; preds = %6
  %11 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %2) #2
  %12 = tail call zeroext i8 @xstrnmatch(ptr noundef nonnull %0, i64 noundef %1, ptr noundef nonnull %2, i64 noundef %11)
  br label %13

13:                                               ; preds = %3, %10, %7
  %.0 = phi i8 [ %12, %10 ], [ %9, %7 ], [ 0, %3 ]
  ret i8 %.0
}

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @xstrused(ptr noundef) local_unnamed_addr #0

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

attributes #0 = { 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 #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,SROAPass,SimplifyCFGPass,TailCallElimPass