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References: <bug-40730-17659@http.gcc.gnu.org/bugzilla/>
Subject: [Bug target/40730] redundant memory load
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------- Comment #2 from rguenth at gcc dot gnu dot org  2009-07-13 09:50 -------
-fgcse-las should do the trick.  Note that PRE would do this kind of
optimization on the tree-level, but it is disabled with -Os (so is gcse).

<bb 2>:
  D.1614_2 = p2_1(D)->front;
  p1_3(D)->head = D.1614_2;
  goto <bb 4>;

<bb 3>:
  D.1616_8 = D.1615_4->next;
  p1_3(D)->head = D.1616_8;

<bb 4>:
  D.1615_4 = p1_3(D)->head;


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40730