https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105883
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-06-14
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
memcmp is folded when it can be turned into two loads and a comparison - that
doesn't work for non-power-of-two sizes. Fully constant folding the loads
isn't attempted - in theory value-numbering could use partial def tracking to
prune
equal prefixes and fold on different known bytes but I think this is all hardly
worth the trouble?
Who will write such code anyway.
