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* [Bug middle-end/23670] Fold does not fold (a|b)&b to b likewise for (a&b) | b to b
  2005-09-01  2:15 [Bug middle-end/23670] New: Fold does not fold (a|b)&b to b likewise for (a&b) | b to b pinskia at gcc dot gnu dot org
@ 2005-09-01  2:15 ` pinskia at gcc dot gnu dot org
  2005-09-17  2:12 ` pinskia at gcc dot gnu dot org
  1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-01  2:15 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-01 02:15 -------
Oh, this was from LLVM again.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23670


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug middle-end/23670] New: Fold does not fold (a|b)&b to b likewise for (a&b) | b to b
@ 2005-09-01  2:15 pinskia at gcc dot gnu dot org
  2005-09-01  2:15 ` [Bug middle-end/23670] " pinskia at gcc dot gnu dot org
  2005-09-17  2:12 ` pinskia at gcc dot gnu dot org
  0 siblings, 2 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-01  2:15 UTC (permalink / raw)
  To: gcc-bugs

Example:
int f(int a, int b)
{
  return (a|9)&9;
}

int f1(int a, int b)
{
  return (a|9)&9;
}


This is folded at the rtl level but not at the tree level.

-- 
           Summary: Fold does not fold (a|b)&b to b likewise for (a&b) | b
                    to b
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, TREE
          Severity: enhancement
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
OtherBugsDependingO 19986
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23670


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug middle-end/23670] Fold does not fold (a|b)&b to b likewise for (a&b) | b to b
  2005-09-01  2:15 [Bug middle-end/23670] New: Fold does not fold (a|b)&b to b likewise for (a&b) | b to b pinskia at gcc dot gnu dot org
  2005-09-01  2:15 ` [Bug middle-end/23670] " pinskia at gcc dot gnu dot org
@ 2005-09-17  2:12 ` pinskia at gcc dot gnu dot org
  1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-17  2:12 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-17 02:12 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-09-17 02:12:28
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23670


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2005-09-17  2:12 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-09-01  2:15 [Bug middle-end/23670] New: Fold does not fold (a|b)&b to b likewise for (a&b) | b to b pinskia at gcc dot gnu dot org
2005-09-01  2:15 ` [Bug middle-end/23670] " pinskia at gcc dot gnu dot org
2005-09-17  2:12 ` pinskia at gcc dot gnu dot org

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