Patch: missing checks for HARD_REGNO_CALL_PART_CLOBBERED

[Dale Johannesen <dalej at apple dot com>]

Building some of the (draft) Spec2004 programs with -mcpu=G5 exposed a 
couple of
places in register allocation where it wasn't checking 
HARD_REGNO_CALL_PART_CLOBBERED,
with the effect that a value (partially) clobbered by a call was reused 
after the call.
The originals are copyrighted, and as usual with RA bugs, it goes away
when you make it smaller; I don't know how to make a test case.
Bootstrapped and tested on Darwin, all languages but Ada.

2005-02-10  Dale Johannesen  <dalej@apple.com>

        * cselib.c (cselib_process_insn):  Clear out regs where
        HARD_REGNO_CALL_PART_CLOBBERED is true at a call.
        * reload.c (find_equiv_reg): Ditto.

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