[PATCH] Mark DECL_SET_IS_OPERATOR_DELETE for user-provided delete operators.

[Jason Merrill]

OK.

On 8/1/19 9:12 AM, Martin Liška wrote:
> Hi.
> 
> As discussed with Marc, I'm suggesting to mark user-provided
> delete operators with DECL_SET_IS_OPERATOR_DELETE in order to allow
> possible DCE for it. I've checked that clang can also optimize that
> situation out.
> 
> Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
> 
> Ready to be installed?
> Thanks,
> Martin
> 
> gcc/cp/ChangeLog:
> 
> 2019-07-30  Martin Liska  <mliska@suse.cz>
> 
> 	* decl.c (grok_op_properties):
> 	Mark DECL_SET_IS_OPERATOR_DELETE for user-provided delete operators.
> 
> gcc/testsuite/ChangeLog:
> 
> 2019-07-30  Martin Liska  <mliska@suse.cz>
> 
> 	* g++.dg/cpp1y/new2.C: New test.
> ---
>   gcc/cp/decl.c                     |  5 +++-
>   gcc/testsuite/g++.dg/cpp1y/new2.C | 39 +++++++++++++++++++++++++++++++
>   2 files changed, 43 insertions(+), 1 deletion(-)
>   create mode 100644 gcc/testsuite/g++.dg/cpp1y/new2.C
> 
>