[Bug tree-optimization/29944] should do more loops transformations to enable more biv widening

[amylaar at gcc dot gnu dot org]

------- Comment #1 from amylaar at gcc dot gnu dot org  2006-11-22 19:23 -------
Created an attachment (id=12668)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12668&action=view)
3.4.3 patch

For illustration, this patch implements this optimization in a 3.4.3 based
compiler.

Because the 4.x series uses a completely different infrastructure, we
must re-implement this from scratch.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29944