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* [Bug middle-end/38750]  New: (-A) * (-B) -> A * B folding should include constant B
@ 2009-01-06 22:30 rguenth at gcc dot gnu dot org
  2009-01-06 22:35 ` [Bug middle-end/38750] " rguenth at gcc dot gnu dot org
  0 siblings, 1 reply; 2+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-01-06 22:30 UTC (permalink / raw)
  To: gcc-bugs

So we fold (1 - j) * -2 to (j - 1) * 2.


-- 
           Summary: (-A) * (-B) -> A * B folding should include constant B
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38750


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug middle-end/38750] (-A) * (-B) -> A * B folding should include constant B
  2009-01-06 22:30 [Bug middle-end/38750] New: (-A) * (-B) -> A * B folding should include constant B rguenth at gcc dot gnu dot org
@ 2009-01-06 22:35 ` rguenth at gcc dot gnu dot org
  0 siblings, 0 replies; 2+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-01-06 22:35 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from rguenth at gcc dot gnu dot org  2009-01-06 22:35 -------
Hm, we actually already do that?


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38750


^ permalink raw reply	[flat|nested] 2+ messages in thread
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2009-01-06 22:30 [Bug middle-end/38750] New: (-A) * (-B) -> A * B folding should include constant B rguenth at gcc dot gnu dot org
2009-01-06 22:35 ` [Bug middle-end/38750] " rguenth at gcc dot gnu dot org

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