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* [Bug tree-optimization/16107] New: missed optimization with some math function builtins
@ 2004-06-21 5:43 pinskia at gcc dot gnu dot org
2004-06-21 5:45 ` [Bug tree-optimization/16107] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-21 5:43 UTC (permalink / raw)
To: gcc-bugs
Even after my tree combine pass, there are some math function builtins which I still not simplify
because I do not regimplify calls expression yet. I will handle this case after I sumbit and commit my
tree-combiner.
double t(double x)
{
x = -x;
x = cos (x);
return x;
}
double t1(double x)
{
x = cos (-x);
return x;
}
--
Summary: missed optimization with some math function builtins
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P2
Component: tree-optimization
AssignedTo: pinskia at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
BugsThisDependsOn: 15459
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/16107] missed optimization with some math function builtins 2004-06-21 5:43 [Bug tree-optimization/16107] New: missed optimization with some math function builtins pinskia at gcc dot gnu dot org @ 2004-06-21 5:45 ` pinskia at gcc dot gnu dot org 2004-06-21 5:46 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-06-21 5:45 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-21 05:45 ------- Mine. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-06-21 05:45:41 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins 2004-06-21 5:43 [Bug tree-optimization/16107] New: missed optimization with some math function builtins pinskia at gcc dot gnu dot org 2004-06-21 5:45 ` [Bug tree-optimization/16107] " pinskia at gcc dot gnu dot org @ 2004-06-21 5:46 ` pinskia at gcc dot gnu dot org 2004-08-29 19:36 ` pinskia at gcc dot gnu dot org 2005-07-12 21:26 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-06-21 5:46 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-21 05:46 ------- I should note that cos(-x) == cos(x); -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins 2004-06-21 5:43 [Bug tree-optimization/16107] New: missed optimization with some math function builtins pinskia at gcc dot gnu dot org 2004-06-21 5:45 ` [Bug tree-optimization/16107] " pinskia at gcc dot gnu dot org 2004-06-21 5:46 ` pinskia at gcc dot gnu dot org @ 2004-08-29 19:36 ` pinskia at gcc dot gnu dot org 2005-07-12 21:26 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-08-29 19:36 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-29 19:36 ------- The two FIXMEs in my tree combiner: /* FIXME: do not abort for the call case as this can happen for an example -cos(-a) == cos (a) but this does not show up here as we reject it when calculating the size. */ /* If we have more than three or zero, we cannot handle this case so we return a relatively huge count saying we cannot handle it. FIXME: Handle the cost of a call expression. */ -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins 2004-06-21 5:43 [Bug tree-optimization/16107] New: missed optimization with some math function builtins pinskia at gcc dot gnu dot org ` (2 preceding siblings ...) 2004-08-29 19:36 ` pinskia at gcc dot gnu dot org @ 2005-07-12 21:26 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-07-12 21:26 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-12 21:25 ------- It might be a while for me to rewrite the tree combiner so unassigning for now. -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|pinskia at gcc dot gnu dot |unassigned at gcc dot gnu |org |dot org Status|ASSIGNED |NEW http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 ^ permalink raw reply [flat|nested] 9+ messages in thread
[parent not found: <bug-16107-4@http.gcc.gnu.org/bugzilla/>]
* [Bug tree-optimization/16107] missed optimization with some math function builtins [not found] <bug-16107-4@http.gcc.gnu.org/bugzilla/> @ 2012-11-02 16:12 ` glisse at gcc dot gnu.org 2014-10-31 4:01 ` pinskia at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 9+ messages in thread From: glisse at gcc dot gnu.org @ 2012-11-02 16:12 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 Marc Glisse <glisse at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |glisse at gcc dot gnu.org --- Comment #5 from Marc Glisse <glisse at gcc dot gnu.org> 2012-11-02 16:11:43 UTC --- *** Bug 55180 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins [not found] <bug-16107-4@http.gcc.gnu.org/bugzilla/> 2012-11-02 16:12 ` glisse at gcc dot gnu.org @ 2014-10-31 4:01 ` pinskia at gcc dot gnu.org 2014-12-01 4:27 ` pinskia at gcc dot gnu.org 2015-08-17 4:49 ` naveenh at gcc dot gnu.org 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu.org @ 2014-10-31 4:01 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 Bug 16107 depends on bug 15459, which changed state. Bug 15459 Summary: [meta-bug] there should be a tree combiner like the rtl one https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15459 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins [not found] <bug-16107-4@http.gcc.gnu.org/bugzilla/> 2012-11-02 16:12 ` glisse at gcc dot gnu.org 2014-10-31 4:01 ` pinskia at gcc dot gnu.org @ 2014-12-01 4:27 ` pinskia at gcc dot gnu.org 2015-08-17 4:49 ` naveenh at gcc dot gnu.org 3 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu.org @ 2014-12-01 4:27 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org --- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I have a patch using match-and-simplify. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/16107] missed optimization with some math function builtins [not found] <bug-16107-4@http.gcc.gnu.org/bugzilla/> ` (2 preceding siblings ...) 2014-12-01 4:27 ` pinskia at gcc dot gnu.org @ 2015-08-17 4:49 ` naveenh at gcc dot gnu.org 3 siblings, 0 replies; 9+ messages in thread From: naveenh at gcc dot gnu.org @ 2015-08-17 4:49 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107 --- Comment #7 from naveenh at gcc dot gnu.org --- Author: naveenh Date: Mon Aug 17 04:47:45 2015 New Revision: 226934 URL: https://gcc.gnu.org/viewcvs?rev=226934&root=gcc&view=rev Log: 2015-08-17 Richard Biener <rguenther@suse.de> Naveen H.S <Naveen.Hurugalawadi@caviumnetworks.com> PR middle-end/16107 * match.pd (div (coss (op @0) : New simplifier. Added: trunk/gcc/testsuite/gcc.dg/pr16107.c Modified: trunk/gcc/ChangeLog trunk/gcc/match.pd ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2015-08-17 4:49 UTC | newest]
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2004-06-21 5:43 [Bug tree-optimization/16107] New: missed optimization with some math function builtins pinskia at gcc dot gnu dot org
2004-06-21 5:45 ` [Bug tree-optimization/16107] " pinskia at gcc dot gnu dot org
2004-06-21 5:46 ` pinskia at gcc dot gnu dot org
2004-08-29 19:36 ` pinskia at gcc dot gnu dot org
2005-07-12 21:26 ` pinskia at gcc dot gnu dot org
[not found] <bug-16107-4@http.gcc.gnu.org/bugzilla/>
2012-11-02 16:12 ` glisse at gcc dot gnu.org
2014-10-31 4:01 ` pinskia at gcc dot gnu.org
2014-12-01 4:27 ` pinskia at gcc dot gnu.org
2015-08-17 4:49 ` naveenh at gcc dot gnu.org
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