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[Bug rtl-optimization/43494] [4.4/4.5/4.6 Regression] Overlooked dependency causes wrong scheduling, wrong code
- From: "bernds at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Aug 2010 13:38:49 -0000
- Subject: [Bug rtl-optimization/43494] [4.4/4.5/4.6 Regression] Overlooked dependency causes wrong scheduling, wrong code
- References: <bug-43494-578@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #26 from bernds at gcc dot gnu dot org 2010-08-19 13:38 -------
(In reply to comment #25)
> Alex Oliva posted some patches to make cselib handle autoinc stuff.
> No idea whether http://gcc.gnu.org/ml/gcc-patches/2010-03/msg01038.html
> is the latest version or if he has a newer one.
Doesn't look bad, but I dislike the name change to _addr variants for functions
that look up not just addresses. I think we should just fix up all the callers
to pass in a mode. I'm also not sure we need a global cselib_record_autoinc
flag - why not just do that always?
Shouldn't we do something else when hashing PRE_MODIFY?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43494