invoke.texi: Add cpu_type power7.

invoke.texi: Add cpu_type power7.

2008-08-08  Peter Bergner  <bergner@vnet.ibm.com>

        * doc/invoke.texi: Add cpu_type power7.
        * config.in (HAVE_AS_VSX): New.
        * config.gcc: Add cpu_type power7.
        * configure.ac (HAVE_AS_VSX): Check for assembler support of the
        VSX instructions.
        * configure: Regenerate.
        * config/rs6000/rs6000.c (rs6000_override_options): Alias power7 to
        power5.
        * config/rs6000/rs6000.h (ASM_CPU_POWER7_SPEC): Define.
        (ASM_CPU_SPEC): Pass %(asm_cpu_power7) for -mcpu=power7.
        (EXTRA_SPECS): Add asm_cpu_power7 spec string.

From-SVN: r138887