rs6000.md: Use predicate altivec_register_operand for altivec_lvx* and altivec_stvx*.

2002-02-12  Aldy Hernandez  <aldyh@redhat.com>

        * config/rs6000/rs6000.md: Use predicate altivec_register_operand
        for altivec_lvx* and altivec_stvx*.
        ("*movv4si_internal"): Add constraint for loading from GPRs.
        ("*movv8hi_internal1"): Same.
        ("*movv16qi_internal1"): Same.
        ("*movv4sf_internal1"): Same.

        * config/rs6000/rs6000.c (altivec_register_operand): New.

        * config/rs6000/rs6000.h (PREDICATE_CODES): Add
        altivec_register_operand.

From-SVN: r49719