https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88118
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-11-21
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yeah, we have code special-casing BUILT_IN_MALLOC and friends but not
DECL_IS_OPERATOR_NEW. And we do not have DECL_IS_OPERATOR_DELETE.
If clang removes the new calls then DECL_IS_OPERATOR_NEW may not have
side-effects that need to be preserved. (hopefully)
Look in tree-ssa-dce.c for BUILT_IN_MALLOC handling and amed it with
DECL_IS_OPERATOR_NEW. Profit!
