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[Bug middle-end/40029] [4.5 Regression] Big degradation on swim/mgrid on powerpc 32/64 after alias improvement merge (gcc r145494)
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Nov 2009 13:11:37 -0000
- Subject: [Bug middle-end/40029] [4.5 Regression] Big degradation on swim/mgrid on powerpc 32/64 after alias improvement merge (gcc r145494)
- References: <bug-40029-16550@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from rguenth at gcc dot gnu dot org 2009-11-30 13:11 -------
I believe this was fixed with
2009-07-22 Michael Matz <matz@suse.de>
PR tree-optimization/35229
PR tree-optimization/39300
* tree-ssa-pre.c (includes): Include tree-scalar-evolution.h.
(inhibit_phi_insertion): New function.
(insert_into_preds_of_block): Call it for REFERENCEs.
(init_pre): Initialize and finalize scalar evolutions.
* Makefile.in (tree-ssa-pre.o): Depend on tree-scalar-evolution.h .
which avoids the PRE and enables predictive commoning again (on x86_64
only the tail loop of the vectorized variant is).
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40029