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* [Bug target/36898] New: Insufficient qp-mutex declarations
@ 2008-07-22 13:34 schwab at suse dot de
2008-07-22 13:34 ` [Bug target/36898] " schwab at suse dot de
2008-07-22 13:35 ` schwab at suse dot de
0 siblings, 2 replies; 5+ messages in thread
From: schwab at suse dot de @ 2008-07-22 13:34 UTC (permalink / raw)
To: gcc-bugs
The attached test case is causing a spurious dependency violation message from
the assembler. The problem seems to be that the assembler is clearing all qp
mutex relations after a call, but the compiler does not emit .pred.rel.mutex
after them.
$ gcc -O2 -c -save-temps xdisp.c
xdisp.s: Assembler messages:
xdisp.s:114: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 -
127' (impliedf), specific resource number is 16
xdisp.s:113: Warning: This is the location of the conflicting usage
--
Summary: Insufficient qp-mutex declarations
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: schwab at suse dot de
GCC target triplet: ia64-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/36898] Insufficient qp-mutex declarations
2008-07-22 13:34 [Bug target/36898] New: Insufficient qp-mutex declarations schwab at suse dot de
@ 2008-07-22 13:34 ` schwab at suse dot de
2008-07-22 13:35 ` schwab at suse dot de
1 sibling, 0 replies; 5+ messages in thread
From: schwab at suse dot de @ 2008-07-22 13:34 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from schwab at suse dot de 2008-07-22 13:34 -------
Created an attachment (id=15939)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15939&action=view)
Testcase
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/36898] Insufficient qp-mutex declarations
2008-07-22 13:34 [Bug target/36898] New: Insufficient qp-mutex declarations schwab at suse dot de
2008-07-22 13:34 ` [Bug target/36898] " schwab at suse dot de
@ 2008-07-22 13:35 ` schwab at suse dot de
1 sibling, 0 replies; 5+ messages in thread
From: schwab at suse dot de @ 2008-07-22 13:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from schwab at suse dot de 2008-07-22 13:35 -------
Created an attachment (id=15940)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15940&action=view)
Assembler output
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/36898] Insufficient qp-mutex declarations
[not found] <bug-36898-4@http.gcc.gnu.org/bugzilla/>
2010-10-18 21:35 ` sje at gcc dot gnu.org
@ 2010-10-18 21:49 ` sje at cup dot hp.com
1 sibling, 0 replies; 5+ messages in thread
From: sje at cup dot hp.com @ 2010-10-18 21:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898
Steve Ellcey <sje at cup dot hp.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |sje at cup dot hp.com
Resolution| |FIXED
--- Comment #4 from Steve Ellcey <sje at cup dot hp.com> 2010-10-18 21:49:10 UTC ---
Resolved by making IA64 more conservative in its bundling and not putting
multiple (predicated) instructions in one bundle if they read/write the same
register.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/36898] Insufficient qp-mutex declarations
[not found] <bug-36898-4@http.gcc.gnu.org/bugzilla/>
@ 2010-10-18 21:35 ` sje at gcc dot gnu.org
2010-10-18 21:49 ` sje at cup dot hp.com
1 sibling, 0 replies; 5+ messages in thread
From: sje at gcc dot gnu.org @ 2010-10-18 21:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898
--- Comment #3 from Steve Ellcey <sje at gcc dot gnu.org> 2010-10-18 21:34:51 UTC ---
Author: sje
Date: Mon Oct 18 21:34:46 2010
New Revision: 165664
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165664
Log:
2010-10-18 Steve Ellcey <sje@cup.hp.com>
PR target/36898
PR middle-end/43760
* config/ia64/ia64.c (rws_access_regno): Remove predicate check.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/ia64/ia64.c
^ permalink raw reply [flat|nested] 5+ messages in thread
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2008-07-22 13:34 [Bug target/36898] New: Insufficient qp-mutex declarations schwab at suse dot de
2008-07-22 13:34 ` [Bug target/36898] " schwab at suse dot de
2008-07-22 13:35 ` schwab at suse dot de
[not found] <bug-36898-4@http.gcc.gnu.org/bugzilla/>
2010-10-18 21:35 ` sje at gcc dot gnu.org
2010-10-18 21:49 ` sje at cup dot hp.com
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