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* [Bug rtl-optimization/21887] New: missed optimization with globals
@ 2005-06-02 19:56 pinskia at gcc dot gnu dot org
2005-06-02 21:05 ` [Bug rtl-optimization/21887] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-02 19:56 UTC (permalink / raw)
To: gcc-bugs
In the following code we produce an extra la.
int curr_state_graph_pass_num = 0;
void
pass_states (void)
{
curr_state_graph_pass_num++;
}
We currently produce at -O2 -mdynamic-no-pic:
_pass_states:
lis r9,ha16(_curr_state_graph_pass_num)
la r9,lo16(_curr_state_graph_pass_num)(r9)
lwz r2,0(r9)
addi r2,r2,1
stw r2,0(r9)
blr
We should be able to produce the following instead:
_pass_states:
lis r9,ha16(_curr_state_graph_pass_num)
lwz r2,lo16(_curr_state_graph_pass_num)(r9)
addi r2,r2,1
stw r2,lo16(_curr_state_graph_pass_num)(r9)
blr
--
Summary: missed optimization with globals
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: minor
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc-darwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21887
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/21887] missed optimization with globals
2005-06-02 19:56 [Bug rtl-optimization/21887] New: missed optimization with globals pinskia at gcc dot gnu dot org
@ 2005-06-02 21:05 ` pinskia at gcc dot gnu dot org
2005-06-12 3:47 ` [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic) pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-02 21:05 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|minor |enhancement
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21887
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic)
2005-06-02 19:56 [Bug rtl-optimization/21887] New: missed optimization with globals pinskia at gcc dot gnu dot org
2005-06-02 21:05 ` [Bug rtl-optimization/21887] " pinskia at gcc dot gnu dot org
@ 2005-06-12 3:47 ` pinskia at gcc dot gnu dot org
2005-08-10 20:31 ` cvs-commit at gcc dot gnu dot org
2005-08-10 20:31 ` pinskia at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-12 3:47 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-06-12 03:47 -------
Confirmed, -fno-PIC works and so does -fPIC but -mdynamic-no-pic does not for some reason.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-06-12 03:47:17
date| |
Summary|missed optimization with |missed optimization with
|globals |globals (-mdynamic-no-pic)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21887
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic)
2005-06-02 19:56 [Bug rtl-optimization/21887] New: missed optimization with globals pinskia at gcc dot gnu dot org
2005-06-02 21:05 ` [Bug rtl-optimization/21887] " pinskia at gcc dot gnu dot org
2005-06-12 3:47 ` [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic) pinskia at gcc dot gnu dot org
@ 2005-08-10 20:31 ` cvs-commit at gcc dot gnu dot org
2005-08-10 20:31 ` pinskia at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-08-10 20:31 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-08-10 20:31 -------
Subject: Bug 21887
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: pinskia@gcc.gnu.org 2005-08-10 20:31:30
Modified files:
gcc : ChangeLog
Log message:
forgot to add the PR marker:
2005-08-10 Andrew Pinski <pinskia@physics.uc.edu>
PR target/21887
* config/darwin.c (machopic_indirect_data_reference): Use a new register
for the high part when generating dynamic-no-pic code.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9697&r2=2.9698
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21887
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic)
2005-06-02 19:56 [Bug rtl-optimization/21887] New: missed optimization with globals pinskia at gcc dot gnu dot org
` (2 preceding siblings ...)
2005-08-10 20:31 ` cvs-commit at gcc dot gnu dot org
@ 2005-08-10 20:31 ` pinskia at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-08-10 20:31 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-10 20:31 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21887
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-08-10 20:31 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2005-06-02 19:56 [Bug rtl-optimization/21887] New: missed optimization with globals pinskia at gcc dot gnu dot org
2005-06-02 21:05 ` [Bug rtl-optimization/21887] " pinskia at gcc dot gnu dot org
2005-06-12 3:47 ` [Bug rtl-optimization/21887] missed optimization with globals (-mdynamic-no-pic) pinskia at gcc dot gnu dot org
2005-08-10 20:31 ` cvs-commit at gcc dot gnu dot org
2005-08-10 20:31 ` pinskia at gcc dot gnu dot org
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