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[Bug rtl-optimization/62004] dead type-unsafe load replaces type-safe load
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 04 Aug 2014 10:04:55 +0000
- Subject: [Bug rtl-optimization/62004] dead type-unsafe load replaces type-safe load
- Auto-submitted: auto-generated
- References: <bug-62004-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62004
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-08-04
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Heh, interesting set of events ;)
Now it is interesting how much we desire to perform the tail-merging - we
_could_
change the alias sets of loads (and stores...) to a "common" one (either if
they
are "equal" or just zero otherwise). Depends on how much we like this kind
of pessimization.
Same for the RTL bits of course.
Btw, I still see the conditional execution after RTL expansion, just
cfglayout mode doesn't have unconditonal gotos for the edges.