https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101074
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Keywords| |missed-optimization
Last reconfirmed| |2021-06-15
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. value-numbering knows about memset but not calloc, adding calloc
support isn't hard but requires quite some boiler-plate code (there might
already be a bug about this).
Note that currently calloc() is not considered having a side-effect besides
the allocation at all (that can't really cause any issue), so we do not
consider it a possible definition of p->i. This allows better disambiguation
at the expense of this missed optimization (which in turn is an implementation
detail missed optimization).
