Let's backport speedups from 3.4 to 3.3

[Kaveh R. Ghazi]

 > From: Gabriel Dos Reis <gdr@integrable-solutions.net>
 > 
 > "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu> writes:
 > 
 > |  > From: Mark Mitchell <mark@codesourcery.com>
 > |  > 
 > |  > Just to  make sure  I'm clear,  I don't object  in any  way to
 > |  > backporting changes that  speed up the compiler --  as long as
 > |  > the person approving them  feels that they're safe.  Let's not
 > |  > do  anything too  radical, but  relatively simple  changes are
 > |  > fine.
 > | 
 > | Are there any more anyone would like to recommend for consideration?
 > 
 > Not one that is currently on mainline.  
 > -- Gaby

Ok, I'm asking because various people claim 3.4 is faster than 3.3
(independent of 3.4-only things like PCH.)  I wonder if that's still
the case.

--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu