[RFC] Have the scalarizer generate vectorizable loops.

[Jack Howarth]

   I should also mention that while I do see those two failures for...

Running /sw/src/fink.build/gcc4-4.1.0-20060106/gcc-4.1-20060106/gcc/testsuite/gcc.dg/tree-ssa/tree-ssa.exp ...
FAIL: gcc.dg/tree-ssa/loop-15.c scan-tree-dump-times \+ 0
FAIL: gcc.dg/tree-ssa/loop-15.c scan-tree-dump-times n \* n 1

...I do see an unexpected pass now in g++ on MacOS X 10.4...

Running /sw/src/fink.build/gcc4-4.1.0-20060106/gcc-4.1-20060106/gcc/testsuite/g++.dg/dg.exp ...
XPASS: g++.dg/tree-ssa/pr14814.C scan-tree-dump-times &this 0

                     Jack