[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[rguenth at gcc dot gnu dot org]

--- Comment #7 from rguenth at gcc dot gnu dot org  2010-07-26 11:00 ---
Invalid MEMs in debug-insns (invalid as in not folded).  Why does the
scheduler query the alias oracle about them?

(debug_insn 49 48 50 7 t.cc:22 (var_location:DI D#3 (mem/s/f/j:DI (plus:DI
(reg/f:DI 54 virtual-stack-vars)
(const_int -32 [0xffe0])) [0 MEM[(struct vector
*)qq.seq]._M_finish+0 S8 A256])) -1 (nil))

CCP does

-  D.2433_12 = qq.seq;
-  # DEBUG this = D.2433_12
-  # DEBUG D#3 = MEM[(struct vector *)D.2433_12]._M_finish
-  # DEBUG this = D.2433_12
+  # DEBUG this = qq.seq
+  # DEBUG D#3 = MEM[(struct vector *)qq.seq]._M_finish
+  # DEBUG this = qq.seq

I have a patch to fix it there.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[rguenth at gcc dot gnu dot org]

--- Comment #9 from rguenth at gcc dot gnu dot org  2010-07-26 13:29 ---
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[rguenth at gcc dot gnu dot org]

--- Comment #8 from rguenth at gcc dot gnu dot org  2010-07-26 13:29 ---
Subject: Bug 45056

Author: rguenth
Date: Mon Jul 26 13:29:14 2010
New Revision: 162536

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162536
Log:
2010-07-26  Richard Guenther  rguent...@suse.de

PR middle-end/45056
* gimple-fold.c (fold_stmt_1): Also fold references in
debug stmts.

* g++.dg/pr45056.C: New testcase.

Added:
trunk/gcc/testsuite/g++.dg/pr45056.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-fold.c
trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[zsojka at seznam dot cz]

--- Comment #1 from zsojka at seznam dot cz  2010-07-24 14:55 ---
Created an attachment (id=21300)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21300action=view)
partially reduced testcase (from ppl sources)

Reducing is in progress, but it goes very slowly (it has been running for two
days already).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[zsojka at seznam dot cz]

--- Comment #2 from zsojka at seznam dot cz  2010-07-24 19:26 ---
Created an attachment (id=21301)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21301action=view)
more reduced testcase

Command line:
$ g++ -O1 -fschedule-insns2 -fschedule-insns -g testcase.C
(-fsched-pressure is no longer needed)


-- 

zsojka at seznam dot cz changed:

   What|Removed |Added

  Attachment #21300|0   |1
is obsolete||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[pinskia at gcc dot gnu dot org]

--- Comment #3 from pinskia at gcc dot gnu dot org  2010-07-24 20:15 ---
Created an attachment (id=21303)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21303action=view)
More reduced


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

  Attachment #21301|0   |1
is obsolete||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[pinskia at gcc dot gnu dot org]

--- Comment #4 from pinskia at gcc dot gnu dot org  2010-07-24 20:16 ---
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever Confirmed|0   |1
   Keywords||ice-on-valid-code
   Last reconfirmed|-00-00 00:00:00 |2010-07-24 20:16:55
   date||
   Target Milestone|--- |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[hjl dot tools at gmail dot com]

--- Comment #5 from hjl dot tools at gmail dot com  2010-07-24 20:26 ---
This is caused by revision 161655:

http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg6.html


-- 

hjl dot tools at gmail dot com changed:

   What|Removed |Added

 CC||rguenth at gcc dot gnu dot
   ||org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056

[Bug tree-optimization/45056] [4.6 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1023

[rguenth at gcc dot gnu dot org]

--- Comment #6 from rguenth at gcc dot gnu dot org  2010-07-24 20:40 ---
Mine then.


-- 

rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
   |dot org |org
 Status|NEW |ASSIGNED
   Last reconfirmed|2010-07-24 20:16:55 |2010-07-24 20:40:00
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45056