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* [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it
@ 2006-09-06 18:45 pinskia at gcc dot gnu dot org
2006-12-18 18:37 ` [Bug target/28966] " nathan at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-09-06 18:45 UTC (permalink / raw)
To: gcc-bugs
Testcase:
int f(void)
{
return 0;
}
This produces with -maltivec -O2:
f:
stwu 1,-16(1)
li 3,0
addi 1,1,16
blr
With just -O2, we get:
f:
li 3,0
blr
--
Summary: -maltivec -m32 causes the stack to be saved and restored
even though there is no need for it
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
GCC target triplet: powerpc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org @ 2006-12-18 18:37 ` nathan at gcc dot gnu dot org 2006-12-18 18:38 ` nathan at gcc dot gnu dot org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: nathan at gcc dot gnu dot org @ 2006-12-18 18:37 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from nathan at gcc dot gnu dot org 2006-12-18 18:36 ------- *** Bug 29248 has been marked as a duplicate of this bug. *** -- nathan at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |atgraham at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org 2006-12-18 18:37 ` [Bug target/28966] " nathan at gcc dot gnu dot org @ 2006-12-18 18:38 ` nathan at gcc dot gnu dot org 2006-12-21 9:03 ` nathan at gcc dot gnu dot org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: nathan at gcc dot gnu dot org @ 2006-12-18 18:38 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from nathan at gcc dot gnu dot org 2006-12-18 18:37 ------- patch here. http://gcc.gnu.org/ml/gcc-patches/2006-12/msg01260.html -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org 2006-12-18 18:37 ` [Bug target/28966] " nathan at gcc dot gnu dot org 2006-12-18 18:38 ` nathan at gcc dot gnu dot org @ 2006-12-21 9:03 ` nathan at gcc dot gnu dot org 2006-12-21 9:04 ` nathan at gcc dot gnu dot org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: nathan at gcc dot gnu dot org @ 2006-12-21 9:03 UTC (permalink / raw) To: gcc-bugs -- nathan at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |nathan at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2006-12-21 09:03:35 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org ` (2 preceding siblings ...) 2006-12-21 9:03 ` nathan at gcc dot gnu dot org @ 2006-12-21 9:04 ` nathan at gcc dot gnu dot org 2007-01-10 19:13 ` pinskia at gcc dot gnu dot org 2007-10-31 19:49 ` pthaugen at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: nathan at gcc dot gnu dot org @ 2006-12-21 9:04 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from nathan at gcc dot gnu dot org 2006-12-21 09:04 ------- Fixed on mainline 2006-12-21 Nathan Sidwell <nathan@codesourcery.com> PR target/28966 PR target/29248 * reload1.c (reload): Realign stack after it changes size. -- nathan at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org ` (3 preceding siblings ...) 2006-12-21 9:04 ` nathan at gcc dot gnu dot org @ 2007-01-10 19:13 ` pinskia at gcc dot gnu dot org 2007-10-31 19:49 ` pthaugen at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: pinskia at gcc dot gnu dot org @ 2007-01-10 19:13 UTC (permalink / raw) To: gcc-bugs -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail| |3.3.3 3.4.0 4.0.0 4.1.0 | |4.2.0 Target Milestone|--- |4.3.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/28966] -maltivec -m32 causes the stack to be saved and restored even though there is no need for it 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org ` (4 preceding siblings ...) 2007-01-10 19:13 ` pinskia at gcc dot gnu dot org @ 2007-10-31 19:49 ` pthaugen at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: pthaugen at gcc dot gnu dot org @ 2007-10-31 19:49 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from pthaugen at gcc dot gnu dot org 2007-10-31 19:48 ------- Subject: Bug 28966 Author: pthaugen Date: Wed Oct 31 19:48:19 2007 New Revision: 129806 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=129806 Log: 2007-10-01 Pat Haugen <pthaugen@us.ibm.com> Backport the following patches: 2007-09-04 Daniel Jacobowitz <dan@codesourcery.com> * config/rs6000/rs6000.c (rs6000_stack_info): Allocate space for the GOT pointer only if there is a constant pool. Use the allocated space for SPE also. 2006-12-21 Nathan Sidwell <nathan@codesourcery.com> PR target/28966 PR target/29248 * reload1.c (reload): Realign stack after it changes size. Modified: branches/ibm/gcc-4_1-branch/gcc/ChangeLog branches/ibm/gcc-4_1-branch/gcc/config/rs6000/rs6000.c branches/ibm/gcc-4_1-branch/gcc/reload1.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28966 ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-10-31 19:49 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2006-09-06 18:45 [Bug target/28966] New: -maltivec -m32 causes the stack to be saved and restored even though there is no need for it pinskia at gcc dot gnu dot org 2006-12-18 18:37 ` [Bug target/28966] " nathan at gcc dot gnu dot org 2006-12-18 18:38 ` nathan at gcc dot gnu dot org 2006-12-21 9:03 ` nathan at gcc dot gnu dot org 2006-12-21 9:04 ` nathan at gcc dot gnu dot org 2007-01-10 19:13 ` pinskia at gcc dot gnu dot org 2007-10-31 19:49 ` pthaugen at gcc dot gnu dot org
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