; LLVM IR from facebook/hermes :: external/llvh/lib/Demangle/ItaniumDemangle.ll (ZN4llvh23ItaniumPartialDemanglerC2EOS0_)

; 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.llvh::ItaniumPartialDemangler" = type { ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4llvh23ItaniumPartialDemanglerC2EOS0_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) unnamed_addr #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  %6 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %5, i32 0, i32 0
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  store ptr %9, ptr %6, align 8, !tbaa !9
  %10 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %5, i32 0, i32 1
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  store ptr %13, ptr %10, align 8, !tbaa !11
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %14, i32 0, i32 0
  store ptr null, ptr %15, align 8, !tbaa !9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %16, i32 0, i32 1
  store ptr null, ptr %17, align 8, !tbaa !11
  ret void
}

attributes #0 = { 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" }

!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, !6, i64 0}
!10 = !{!"_ZTSN4llvh23ItaniumPartialDemanglerE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, 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 norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @_ZN4llvh23ItaniumPartialDemanglerC2EOS0_(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(16) %0, ptr nocapture noundef nonnull align 8 dereferenceable(16) %1) unnamed_addr #0 align 2 {
  %3 = load <2 x ptr>, ptr %1, align 8, !tbaa !5
  store <2 x ptr> %3, ptr %0, align 8, !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %1, i8 0, i64 16, i1 false)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 nounwind willreturn memory(argmem: write) }

!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"}


; Effective O3 passes: EarlyCSEPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,TailCallElimPass