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* [Bug tree-optimization/35357] Loop peeling not happening
[not found] <bug-35357-4@http.gcc.gnu.org/bugzilla/>
@ 2012-10-26 16:56 ` xinliangli at gmail dot com
2022-12-19 21:06 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: xinliangli at gmail dot com @ 2012-10-26 16:56 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35357
--- Comment #2 from davidxl <xinliangli at gmail dot com> 2012-10-26 16:55:48 UTC ---
(In reply to comment #1)
> What is the expected optimization and what is its benefit?
Should be transformed into the following the simplified loop body.
void foo(int n)
{
int i;
if (n > 0) {
for ( i = 0; i < n; i++)
{
b[i*2] = a[3*i+1];
b[i*2] +=1;
}
b[i*2] = a[3*i + 1];
}
}
Icc at O2 distributes the loop body:
for ( i = 0; i <= n; i++)
{
b[i*2] = a[3*i+1];
}
for ( i = 0; i < n; i++)
{
b[i*2] += 1;
}
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/35357] Loop peeling not happening
[not found] <bug-35357-4@http.gcc.gnu.org/bugzilla/>
2012-10-26 16:56 ` [Bug tree-optimization/35357] Loop peeling not happening xinliangli at gmail dot com
@ 2022-12-19 21:06 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-12-19 21:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35357
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Yes this was fixed for GCC 8.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/35357] Loop peeling not happening
2008-02-25 5:02 [Bug middle-end/35357] New: " xinliangli at gmail dot com
@ 2008-02-25 11:49 ` rguenth at gcc dot gnu dot org
0 siblings, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-02-25 11:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-02-25 11:48 -------
What is the expected optimization and what is its benefit?
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rakdver at gcc dot gnu dot
| |org
Severity|normal |enhancement
Component|middle-end |tree-optimization
Keywords| |missed-optimization
Version|unknown |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35357
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-12-19 21:06 UTC | newest]
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[not found] <bug-35357-4@http.gcc.gnu.org/bugzilla/>
2012-10-26 16:56 ` [Bug tree-optimization/35357] Loop peeling not happening xinliangli at gmail dot com
2022-12-19 21:06 ` pinskia at gcc dot gnu.org
2008-02-25 5:02 [Bug middle-end/35357] New: " xinliangli at gmail dot com
2008-02-25 11:49 ` [Bug tree-optimization/35357] " rguenth at gcc dot gnu dot org
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