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* [Bug tree-optimization/33158] New: missed store sinking opportunity
@ 2007-08-23 10:27 bonzini at gnu dot org
2007-08-23 10:27 ` [Bug tree-optimization/33158] " bonzini at gnu dot org
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: bonzini at gnu dot org @ 2007-08-23 10:27 UTC (permalink / raw)
To: gcc-bugs
In gcc.target/i386/cmov4.c no store sinking is performed for this code
for (i = 0; i < ARCHnodes; i++) {
nodekind[i] = (int) nodekindf[i];
if (nodekind[i] == 3)
nodekind[i] = 1;
}
I would expect it to be rewritten as
for (i = 0; i < ARCHnodes; i++) {
int x = (int) nodekindf[i];
if (x == 3)
x = 1;
nodekind[i] = x;
}
--
Summary: missed store sinking opportunity
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bonzini at gnu dot org
OtherBugsDependingO 33157
nThis:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/33158] missed store sinking opportunity 2007-08-23 10:27 [Bug tree-optimization/33158] New: missed store sinking opportunity bonzini at gnu dot org @ 2007-08-23 10:27 ` bonzini at gnu dot org 2007-08-24 12:44 ` rguenth at gcc dot gnu dot org 2007-08-24 14:54 ` paolo dot bonzini at lu dot unisi dot ch 2 siblings, 0 replies; 6+ messages in thread From: bonzini at gnu dot org @ 2007-08-23 10:27 UTC (permalink / raw) To: gcc-bugs -- bonzini at gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn|33159 | Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2007-08-23 10:27:48 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/33158] missed store sinking opportunity 2007-08-23 10:27 [Bug tree-optimization/33158] New: missed store sinking opportunity bonzini at gnu dot org 2007-08-23 10:27 ` [Bug tree-optimization/33158] " bonzini at gnu dot org @ 2007-08-24 12:44 ` rguenth at gcc dot gnu dot org 2007-08-24 14:54 ` paolo dot bonzini at lu dot unisi dot ch 2 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2007-08-24 12:44 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from rguenth at gcc dot gnu dot org 2007-08-24 12:44 ------- It also naturally would fit in the phiopt framework given the structure of virtual operands: # SMT.4_26 = VDEF <SMT.4_18> *D.2016_7 = D.2019_13; if (D.2019_13 == 3) goto <bb 4>; else goto <bb 9>; <bb 9>: goto <bb 5>; <bb 4>: # SMT.4_27 = VDEF <SMT.4_26> *D.2016_7 = 1; <bb 5>: # SMT.4_22 = PHI <SMT.4_26(9), SMT.4_27(4)> -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |matz at gcc dot gnu dot org Severity|normal |enhancement http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/33158] missed store sinking opportunity 2007-08-23 10:27 [Bug tree-optimization/33158] New: missed store sinking opportunity bonzini at gnu dot org 2007-08-23 10:27 ` [Bug tree-optimization/33158] " bonzini at gnu dot org 2007-08-24 12:44 ` rguenth at gcc dot gnu dot org @ 2007-08-24 14:54 ` paolo dot bonzini at lu dot unisi dot ch 2 siblings, 0 replies; 6+ messages in thread From: paolo dot bonzini at lu dot unisi dot ch @ 2007-08-24 14:54 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from paolo dot bonzini at lu dot unisi dot ch 2007-08-24 14:53 ------- Subject: Re: missed store sinking opportunity Danny said he knows how to fix it (I guess in store sinking though he didn't say). From knowing him, there might be additional less obvious cases that this fix might optimize, and that would not be optimized by phiopt. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158 ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <bug-33158-4@http.gcc.gnu.org/bugzilla/>]
* [Bug tree-optimization/33158] missed store sinking opportunity [not found] <bug-33158-4@http.gcc.gnu.org/bugzilla/> @ 2012-02-07 21:08 ` pinskia at gcc dot gnu.org 2023-05-06 18:37 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2012-02-07 21:08 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |10050 --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-07 21:07:41 UTC --- This is basically the same as PR 10050. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/33158] missed store sinking opportunity [not found] <bug-33158-4@http.gcc.gnu.org/bugzilla/> 2012-02-07 21:08 ` pinskia at gcc dot gnu.org @ 2023-05-06 18:37 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-05-06 18:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33158 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED Target Milestone|--- |4.3.0 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Fixed a long long time ago by r0-83223-ga5828d1e531377 . ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-05-06 18:37 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2007-08-23 10:27 [Bug tree-optimization/33158] New: missed store sinking opportunity bonzini at gnu dot org
2007-08-23 10:27 ` [Bug tree-optimization/33158] " bonzini at gnu dot org
2007-08-24 12:44 ` rguenth at gcc dot gnu dot org
2007-08-24 14:54 ` paolo dot bonzini at lu dot unisi dot ch
[not found] <bug-33158-4@http.gcc.gnu.org/bugzilla/>
2012-02-07 21:08 ` pinskia at gcc dot gnu.org
2023-05-06 18:37 ` pinskia at gcc dot gnu.org
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