public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "irar at il dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/46213] [4.6 Regression] gfortran.dg/aliasing_array_result_1.f90 ICE: in vectorizable_reduction, at tree-vect-loop.c:4046 with custom compiler flags
Date: Tue, 02 Nov 2010 08:32:00 -0000 [thread overview]
Message-ID: <20101102083200.KlFZPKYAFeZY6BcNraDfTC_U3DMenYISDjd7j_Bvl4M@z> (raw)
In-Reply-To: <bug-46213-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46213
Ira Rosen <irar at il dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |irar at gcc dot gnu.org
|gnu.org |
--- Comment #4 from Ira Rosen <irar at il dot ibm.com> 2010-11-02 08:32:15 UTC ---
I am testing:
Index: tree-vect-loop.c
===================================================================
--- tree-vect-loop.c (revision 166172)
+++ tree-vect-loop.c (working copy)
@@ -1800,7 +1800,11 @@ vect_is_simple_reduction_1 (loop_vec_inf
simply rewriting this into "res += -x[i]". Avoid changing
gimple instruction for the first simple tests and only do this
if we're allowed to change code at all. */
- if (code == MINUS_EXPR && modify)
+ if (code == MINUS_EXPR
+ && modify
+ && (op1 = gimple_assign_rhs1 (def_stmt))
+ && TREE_CODE (op1) == SSA_NAME
+ && SSA_NAME_DEF_STMT (op1) == phi)
code = PLUS_EXPR;
if (check_reduction
next prev parent reply other threads:[~2010-11-02 8:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-28 18:44 [Bug tree-optimization/46213] New: " zsojka at seznam dot cz
2010-10-28 19:11 ` [Bug tree-optimization/46213] " dominiq at lps dot ens.fr
2010-10-28 19:52 ` irar at il dot ibm.com
2010-10-29 14:31 ` hjl.tools at gmail dot com
2010-10-29 23:32 ` rguenth at gcc dot gnu.org
2010-11-02 8:32 ` irar at il dot ibm.com [this message]
2010-11-04 11:51 ` irar at gcc dot gnu.org
2010-11-04 12:48 ` irar at il dot ibm.com
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20101102083200.KlFZPKYAFeZY6BcNraDfTC_U3DMenYISDjd7j_Bvl4M@z \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).