[Bug c++/91369] Implement P0784R7: constexpr new

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91369

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #46946|0                           |1
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46956
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46956&action=edit
gcc10-pr91369.patch

Updated patch.
This patch implements the state if C++ drops the note that trivial destructors
are constexpr destructors.  If on the core reflector you agree on something
else, please let me know and I'll change it.
Other than that, I need to finish up the cookie_size support for array new
(trying to represent that heap object as record with two fields, sizetype array
covering cookie and class_type array covering the rest, but seems indirect ref
folding isn't still happy about that, otherwise I'm out of ideas what else to
test.