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* [Bug middle-end/27498] New: fold does not fold reads from constant static strings
@ 2006-05-08 16:14 rguenth at gcc dot gnu dot org
2006-05-08 16:19 ` [Bug middle-end/27498] " rguenth at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-08 16:14 UTC (permalink / raw)
To: gcc-bugs
void zconfdump(void)
{
char *p, *p2;
for (p2 = p; p2; )
{
char __a0, __a1, __a2;
__a0 = ((__const char *) ("\"\\"))[0];
if (__a0)
return;
}
}
we do not fold the read from "\"\\". Me & Dirk have a fix.
--
Summary: fold does not fold reads from constant static strings
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug middle-end/27498] fold does not fold reads from constant static strings 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org @ 2006-05-08 16:19 ` rguenth at gcc dot gnu dot org 2006-05-09 7:21 ` pinskia at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2006-05-08 16:19 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from rguenth at gcc dot gnu dot org 2006-05-08 16:19 ------- Created an attachment (id=11409) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11409&action=view) patch -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/27498] fold does not fold reads from constant static strings 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org 2006-05-08 16:19 ` [Bug middle-end/27498] " rguenth at gcc dot gnu dot org @ 2006-05-09 7:21 ` pinskia at gcc dot gnu dot org 2006-05-09 14:17 ` rguenth at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2006-05-09 7:21 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from pinskia at gcc dot gnu dot org 2006-05-09 07:20 ------- Confirmed. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2006-05-09 07:20:59 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/27498] fold does not fold reads from constant static strings 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org 2006-05-08 16:19 ` [Bug middle-end/27498] " rguenth at gcc dot gnu dot org 2006-05-09 7:21 ` pinskia at gcc dot gnu dot org @ 2006-05-09 14:17 ` rguenth at gcc dot gnu dot org 2006-05-09 14:26 ` rguenth at gcc dot gnu dot org 2006-05-15 19:37 ` patchapp at dberlin dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2006-05-09 14:17 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from rguenth at gcc dot gnu dot org 2006-05-09 14:16 ------- Subject: Bug 27498 Author: rguenth Date: Tue May 9 14:16:50 2006 New Revision: 113651 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113651 Log: 2006-05-09 Dirk Mueller <dmueller@suse.de> Richard Guenther <rguenther@suse.de> PR middle-end/27498 * fold-const.c (fold_read_from_constant_string): Relax check for matching types to matching modes. * gcc.dg/tree-ssa/pr27498.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr27498.c Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/27498] fold does not fold reads from constant static strings 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org ` (2 preceding siblings ...) 2006-05-09 14:17 ` rguenth at gcc dot gnu dot org @ 2006-05-09 14:26 ` rguenth at gcc dot gnu dot org 2006-05-15 19:37 ` patchapp at dberlin dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2006-05-09 14:26 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from rguenth at gcc dot gnu dot org 2006-05-09 14:25 ------- Fixed. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |4.2.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/27498] fold does not fold reads from constant static strings 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org ` (3 preceding siblings ...) 2006-05-09 14:26 ` rguenth at gcc dot gnu dot org @ 2006-05-15 19:37 ` patchapp at dberlin dot org 4 siblings, 0 replies; 6+ messages in thread From: patchapp at dberlin dot org @ 2006-05-15 19:37 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from patchapp at dberlin dot org 2006-05-15 19:37 ------- Subject: Bug number PR27498 A patch for this bug has been added to the patch tracker. The mailing list url for the patch is http://gcc.gnu.org/ml/gcc-patches/2006-05/msg00326.html -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27498 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-05-15 19:37 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2006-05-08 16:14 [Bug middle-end/27498] New: fold does not fold reads from constant static strings rguenth at gcc dot gnu dot org 2006-05-08 16:19 ` [Bug middle-end/27498] " rguenth at gcc dot gnu dot org 2006-05-09 7:21 ` pinskia at gcc dot gnu dot org 2006-05-09 14:17 ` rguenth at gcc dot gnu dot org 2006-05-09 14:26 ` rguenth at gcc dot gnu dot org 2006-05-15 19:37 ` patchapp at dberlin dot org
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