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[Bug tree-optimization/21485] [4.4/4.5/4.6/4.7/4.8 Regression] missed load PRE, PRE makes i?86 suck


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21485

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends on|                            |32120

--- Comment #48 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-03-03 23:51:36 UTC ---
I noticed PR 32120 is also involved.

  D.1716_7 = k_4 * 8;
  D.1717_9 = array_8(D) + D.1716_7;
  D.1718_10 = *D.1717_9;
  k_11 = k_4 + 1;
  D.1720_12 = k_11 * 8;


The D.1720_12 should be converted to D.1716_7 + 8.


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