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* [Bug middle-end/40589] efficiency problem with V2HI add
[not found] <bug-40589-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-29 22:49 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-29 22:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40589
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |4.9.1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed for GCC 5 by r5-1564 and backported to GCC 4.9.1.
The code now looks like:
/* For very wide vectors, try using a smaller vector mode. */
tree compute_type = type;
if (op
&& (!VECTOR_MODE_P (TYPE_MODE (type))
|| optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing))
{
Which solved this exact issue:
N=4 V2HI
N=8 DImode
N=16 TImode
N=32 BLKmode
N=64 BLKmode
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/40589] efficiency problem with V2HI add
2009-06-29 15:06 [Bug middle-end/40589] New: " Tom dot de dot Vries at Nxp dot com
@ 2009-06-29 15:40 ` rguenth at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-06-29 15:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2009-06-29 15:40 -------
Good observations. Patches should be sent to gcc-patches@gcc.gnu.org together
with a changelog entry following existing practice and a note how you tested
the patch. See gcc.gnu.org/contribute.html.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40589
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-40589-4@http.gcc.gnu.org/bugzilla/>
2021-08-29 22:49 ` [Bug middle-end/40589] efficiency problem with V2HI add pinskia at gcc dot gnu.org
2009-06-29 15:06 [Bug middle-end/40589] New: " Tom dot de dot Vries at Nxp dot com
2009-06-29 15:40 ` [Bug middle-end/40589] " rguenth at gcc dot gnu dot org
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