--- Comment #1 from rguenth at gcc dot gnu dot org 2009-02-06 10:09 ---
You get a warning issued by the frontend for the first case. The second case
is not warned because we didn't prune buf fron ps points-to set. This is
because while A has an alias set of 2, buf has alias set zero.
--- Comment #17 from bonzini at gnu dot org 2009-02-06 09:53 ---
without a testcase where this affects performance, it should not be P2 (though
it should be fixed).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36758
--- Comment #11 from jakub at gcc dot gnu dot org 2009-02-06 09:35 ---
Created an attachment (id=17261)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17261&action=view)
pr39086.C
Slightly more reduced testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39086
--- Comment #16 from rguenth at gcc dot gnu dot org 2009-02-06 09:17
---
Subject: Bug 39074
Author: rguenth
Date: Fri Feb 6 09:17:19 2009
New Revision: 143983
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143983
Log:
2009-02-06 Richard Guenther
PR tree-optimizatio
--- Comment #12 from bonzini at gnu dot org 2009-02-06 09:16 ---
There's another peephole2, namely from
[(set (match_operand 0 "register_operand")
(match_operand 1 "register_operand"))
(set (match_operand 0 "register_operand")
(match_operator 3 "arith_or_logical_operator"
--- Comment #22 from rguenth at gcc dot gnu dot org 2009-02-06 09:08
---
Fixed.
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Status|ASSIGNE
--- Comment #21 from rguenth at gcc dot gnu dot org 2009-02-06 09:06
---
Subject: Bug 38977
Author: rguenth
Date: Fri Feb 6 09:06:39 2009
New Revision: 143982
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143982
Log:
2009-02-06 Richard Guenther
PR middle-end/38977
--- Comment #11 from bonzini at gnu dot org 2009-02-06 09:06 ---
See 39110 for another patch that would need to be backported (thinko fix).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38921
--- Comment #19 from bonzini at gnu dot org 2009-02-06 09:05 ---
See 39110 for another patch that would need to be backported (thinko fix).
--
bonzini at gnu dot org changed:
What|Removed |Added
-
--- Comment #19 from bonzini at gnu dot org 2009-02-06 08:30 ---
patch committed, PRE is now down to 35-40% of compilation time. I defer to the
RMs whether this should be closed.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35639
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