PATCH - [tree-ssa] regrouping of expression tree for single multiply add.

[law@redhat.com]

In message <A2195074-7EB6-11D8-8C7F-000A95D7CD40@apple.com>, Dale Johannesen wr
ites:
 >Well, there's an argument against it, all right, but the view that it's 
 >excellent
 >appears to be a minority one.  It's clear that quite a few people find 
 >such
 >transformations useful.  Those of you who want standard-conforming 
 >behavior
 >don't have to use -ffast-math, after all.
OR, those who do not want standard conforming code probably ought to be
using -ffast-math.  I *much* prefer to keep the compiler standards conforming.

jeff