Yet another attempt to solve multiplication by 11 and many (most?) other constants problem

[David Edelsohn]

>>>>> Jan Hubicka writes:

Jan> Current patch is biassed to 2 address architecture (that also saves registers) and I've
Jan> verified that it produces no worse results in IA-64.

	This is not okay.  GCC cannot repeatedly switch back and forth
between which type of architecture is preferred.  GCC 4.1 and 4.2
synthetic multiply need to benefit three address architectures or we have
a regression.

David