[PATCH] make a new timevar for Reduce PHI

[Andrew Pinski]

While looking at PR 18708 which was slow for any compiler before 4.0.0,
that reduce PHI was being counted as expand which is wrong.  This patch
fixes it.


OK? Bootstrapped and tested on ppc-darwin with no regressions.

Thanks,
Andrew Pinski

ChangeLog:

	* timevar.def (TV_TREE_REDPHI): New timevar.
	* tree-ssa.c (pass_redundant_phi): Use TV_TREE_REDPHI for the tv id.

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