; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/Windows (PropVariant)

; 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.tagPROPVARIANT = type { i16, i16, i16, i16, %union.anon }
%union.anon = type { %struct._LARGE_INTEGER }
%struct._LARGE_INTEGER = type { i64 }

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN8NWindows4NCOM17PropVariant_ClearEP14tagPROPVARIANT(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN8NWindows4NCOM12CPropVariant6DetachEP14tagPROPVARIANT(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1) #2 align 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
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.tagPROPVARIANT, ptr %9, i32 0, i32 0
  %11 = load i16, ptr %10, align 8, !tbaa !9
  %12 = zext i16 %11 to i32
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %25

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 noundef i32 @_ZN8NWindows4NCOM17PropVariant_ClearEP14tagPROPVARIANT(ptr noundef %15) #3
  store i32 %16, ptr %6, align 4, !tbaa !12
  %17 = load i32, ptr %6, align 4, !tbaa !12
  %18 = icmp slt i32 %17, 0
  br i1 %18, label %19, label %21

19:                                               ; preds = %14
  %20 = load i32, ptr %6, align 4, !tbaa !12
  store i32 %20, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %22

21:                                               ; preds = %14
  store i32 0, ptr %7, align 4
  br label %22

22:                                               ; preds = %21, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %23 = load i32, ptr %7, align 4
  switch i32 %23, label %30 [
    i32 0, label %24
    i32 1, label %28
  ]

24:                                               ; preds = %22
  br label %25

25:                                               ; preds = %24, %2
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %26, ptr align 8 %8, i64 16, i1 false)
  %27 = getelementptr inbounds %struct.tagPROPVARIANT, ptr %8, i32 0, i32 0
  store i16 0, ptr %27, align 8, !tbaa !9
  store i32 0, ptr %3, align 4
  br label %28

28:                                               ; preds = %25, %22
  %29 = load i32, ptr %3, align 4
  ret i32 %29

30:                                               ; preds = %22
  unreachable
}

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

!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++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTS14tagPROPVARIANT", !11, i64 0, !11, i64 2, !11, i64 4, !11, i64 6, !7, i64 8}
!11 = !{!"short", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"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 nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN8NWindows4NCOM17PropVariant_ClearEP14tagPROPVARIANT(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN8NWindows4NCOM12CPropVariant6DetachEP14tagPROPVARIANT(ptr nocapture noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = load i16, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i16 %3, 0
  br i1 %.not, label %7, label %4

4:                                                ; preds = %2
  %5 = tail call noundef i32 @_ZN8NWindows4NCOM17PropVariant_ClearEP14tagPROPVARIANT(ptr noundef nonnull %1) #2
  %6 = icmp sgt i32 %5, -1
  br i1 %6, label %7, label %8

7:                                                ; preds = %4, %2
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 8 dereferenceable(16) %0, i64 16, i1 false)
  store i16 0, ptr %0, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %4, %7
  %.1 = phi i32 [ %5, %4 ], [ 0, %7 ]
  ret i32 %.1
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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, !7, i64 0}
!6 = !{!"_ZTS14tagPROPVARIANT", !7, i64 0, !7, i64 2, !7, i64 4, !7, i64 6, !8, i64 8}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


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