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

; 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.XByteBuffer = type { ptr, i64, i64, i16, i16, 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 uwtable
define dso_local i32 @XByteBuffer_Terminate(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.XByteBuffer, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = icmp eq ptr %9, null
  br i1 %10, label %16, label %11

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.XByteBuffer, ptr %12, i32 0, i32 2
  %14 = load i64, ptr %13, align 8, !tbaa !15
  %15 = icmp ne i64 %14, 0
  br i1 %15, label %17, label %16

16:                                               ; preds = %11, %2
  store i32 -1, ptr %3, align 4
  br label %39

17:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.XByteBuffer, ptr %18, i32 0, i32 2
  %20 = load i64, ptr %19, align 8, !tbaa !15
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = icmp ult i64 %20, %21
  br i1 %22, label %23, label %27

23:                                               ; preds = %17
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.XByteBuffer, ptr %24, i32 0, i32 2
  %26 = load i64, ptr %25, align 8, !tbaa !15
  br label %29

27:                                               ; preds = %17
  %28 = load i64, ptr %5, align 8, !tbaa !9
  br label %29

29:                                               ; preds = %27, %23
  %30 = phi i64 [ %26, %23 ], [ %28, %27 ]
  store i64 %30, ptr %6, align 8, !tbaa !9
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.XByteBuffer, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8, !tbaa !11
  %34 = load i64, ptr %6, align 8, !tbaa !9
  %35 = getelementptr inbounds i8, ptr %33, i64 %34
  store i8 0, ptr %35, align 1, !tbaa !16
  %36 = load i64, ptr %6, align 8, !tbaa !9
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.XByteBuffer, ptr %37, i32 0, i32 2
  store i64 %36, ptr %38, align 8, !tbaa !15
  store i32 1, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %39

39:                                               ; preds = %29, %16
  %40 = load i32, ptr %3, align 4
  ret i32 %40
}

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 }

!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, !6, i64 0}
!12 = !{!"XByteBuffer", !6, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !13, i64 26, !14, i64 28}
!13 = !{!"short", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!12, !10, i64 16}
!16 = !{!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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 -1, 2) i32 @XByteBuffer_Terminate(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %10, label %5

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load i64, ptr %6, align 8, !tbaa !13
  %.not = icmp eq i64 %7, 0
  br i1 %.not, label %10, label %8

8:                                                ; preds = %5
  %. = tail call i64 @llvm.umin.i64(i64 %7, i64 %1)
  %9 = getelementptr inbounds i8, ptr %3, i64 %.
  store i8 0, ptr %9, align 1, !tbaa !14
  store i64 %., ptr %6, align 8, !tbaa !13
  br label %10

10:                                               ; preds = %2, %5, %8
  %.0 = phi i32 [ 1, %8 ], [ -1, %5 ], [ -1, %2 ]
  ret i32 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"XByteBuffer", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24, !11, i64 26, !12, i64 28}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"short", !8, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!6, !10, i64 16}
!14 = !{!8, !8, i64 0}


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