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* [Bug middle-end/31631] Folding of A & (1 << B) pessimizes FRE
[not found] <bug-31631-4@http.gcc.gnu.org/bugzilla/>
@ 2023-05-20 2:29 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-20 2:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31631
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
We do a LIM before PRE now which allows PRE to handle it.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/31631] Folding of A & (1 << B) pessimizes FRE
2007-04-19 9:56 [Bug middle-end/31631] New: " rguenth at gcc dot gnu dot org
@ 2008-01-03 15:28 ` rguenth at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-01-03 15:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-01-03 15:06 -------
Confirmed. LIM and DOM together remove the redundancy later. If the loop
enclosing the redundancy is removed this doesn't happen.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-01-03 15:06:46
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31631
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-31631-4@http.gcc.gnu.org/bugzilla/>
2023-05-20 2:29 ` [Bug middle-end/31631] Folding of A & (1 << B) pessimizes FRE pinskia at gcc dot gnu.org
2007-04-19 9:56 [Bug middle-end/31631] New: " rguenth at gcc dot gnu dot org
2008-01-03 15:28 ` [Bug middle-end/31631] " rguenth at gcc dot gnu dot org
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