public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug tree-optimization/31343] New: ICE in data-refs dependence testing
@ 2007-03-25 8:01 irar at il dot ibm dot com
2007-03-25 8:02 ` [Bug tree-optimization/31343] " irar at il dot ibm dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: irar at il dot ibm dot com @ 2007-03-25 8:01 UTC (permalink / raw)
To: gcc-bugs
An attempt to divide by zero is made (causing ICE on the attached test
case) for evolution functions with zero step.
For the following evolution functions of pS[i_15].x and pS[i_15].y from the
attached test
(chrec_a = {{0, +, 1}_1, +, 0}_2)
(chrec_b = {{1, +, 1}_1, +, 0}_2)
the difference (-1) is calculated, and then the check whether the step
(0)divides the difference is performed in function
chrec_steps_divide_constant_p (tree-data-ref.c), causing ICE.
--
Summary: ICE in data-refs dependence testing
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: irar at il dot ibm dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31343
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug tree-optimization/31343] ICE in data-refs dependence testing 2007-03-25 8:01 [Bug tree-optimization/31343] New: ICE in data-refs dependence testing irar at il dot ibm dot com @ 2007-03-25 8:02 ` irar at il dot ibm dot com 2007-03-25 16:38 ` pthaugen at us dot ibm dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: irar at il dot ibm dot com @ 2007-03-25 8:02 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from irar at il dot ibm dot com 2007-03-25 10:02 ------- Created an attachment (id=13281) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13281&action=view) test case -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31343 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/31343] ICE in data-refs dependence testing 2007-03-25 8:01 [Bug tree-optimization/31343] New: ICE in data-refs dependence testing irar at il dot ibm dot com 2007-03-25 8:02 ` [Bug tree-optimization/31343] " irar at il dot ibm dot com @ 2007-03-25 16:38 ` pthaugen at us dot ibm dot com 2007-04-11 0:09 ` spop at gcc dot gnu dot org 2007-07-10 8:34 ` spop at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pthaugen at us dot ibm dot com @ 2007-03-25 16:38 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from pthaugen at us dot ibm dot com 2007-03-25 18:38 ------- I hit the same ICE building the 191.fma3d benchmark from cpu2000 when compiling lsold.f90 with -O2 -ftree-loop-linear. -- pthaugen at us dot ibm dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pthaugen at us dot ibm dot | |com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31343 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/31343] ICE in data-refs dependence testing 2007-03-25 8:01 [Bug tree-optimization/31343] New: ICE in data-refs dependence testing irar at il dot ibm dot com 2007-03-25 8:02 ` [Bug tree-optimization/31343] " irar at il dot ibm dot com 2007-03-25 16:38 ` pthaugen at us dot ibm dot com @ 2007-04-11 0:09 ` spop at gcc dot gnu dot org 2007-07-10 8:34 ` spop at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: spop at gcc dot gnu dot org @ 2007-04-11 0:09 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from spop at gcc dot gnu dot org 2007-04-11 01:09 ------- Subject: Bug 31343 Author: spop Date: Wed Apr 11 01:09:35 2007 New Revision: 123708 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123708 Log: PR tree-optimization/31343 * tree-chrec.h (chrec_zerop): Moved before build_polynomial_chrec. (build_polynomial_chrec): Return a scalar when the evolution is zero. * testsuite/gcc.dg/vect/pr31343.c: New. Added: trunk/gcc/testsuite/gcc.dg/vect/pr31343.c Modified: trunk/gcc/ChangeLog trunk/gcc/tree-chrec.h -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31343 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/31343] ICE in data-refs dependence testing 2007-03-25 8:01 [Bug tree-optimization/31343] New: ICE in data-refs dependence testing irar at il dot ibm dot com ` (2 preceding siblings ...) 2007-04-11 0:09 ` spop at gcc dot gnu dot org @ 2007-07-10 8:34 ` spop at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: spop at gcc dot gnu dot org @ 2007-07-10 8:34 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from spop at gcc dot gnu dot org 2007-07-10 08:34 ------- Fixed. -- spop at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31343 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2007-07-10 8:34 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2007-03-25 8:01 [Bug tree-optimization/31343] New: ICE in data-refs dependence testing irar at il dot ibm dot com 2007-03-25 8:02 ` [Bug tree-optimization/31343] " irar at il dot ibm dot com 2007-03-25 16:38 ` pthaugen at us dot ibm dot com 2007-04-11 0:09 ` spop at gcc dot gnu dot org 2007-07-10 8:34 ` spop at gcc dot gnu dot org
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).