K6 patch (was: -march=k6 broken in 2.96 ?)

[Jeffrey A Law]

  In message < 19991114164920.F11046@pingoo.ifn.fr >you write:
  > 
  > Does this patch makes any sense ? 
  > With it I can bootstrap the 1999-11-10 snapshot with BOOT_CFLAGS="-O2 -marc
  > h=k6".
  > And the compiler still transform, for example, "movl %eax,(%esi)" to 
  > "movl %eax,0(%esi)".
It's basically correct.  We generally use REG_P (x) to verify that x is a
register instead of GET_CODE (x) == REG.   I modified the patch to use
REG_P and installed it.

Thanks,
jeff