PPro and egcs

[Jeffrey A Law]

  In message < m0xPI2T-0004edC@ocean.lucon.org >you write:
  > Hi,
  > 
  > Has anyone tried egcs on PPro? I got an error.
  > 
  > # gcc -O -march=i686 -S foo.c -fomit-frame-pointer
  > foo.c: In function `nfs_readpage_sync':
  > foo.c:1618: internal error--insn does not satisfy its constraints:
  > (insn 317 316 139 (parallel[ 
  >             (set (reg/v:SI 3 %ebx)
  >                 (if_then_else:SI (ne (cc0)
  >                         (const_int 0))
  >                     (reg:SI 0 %eax)
  >                     (const_int -22)))
  >             (clobber (reg:SI 0 %eax))
  >         ] ) 374 {movsicc_1} (nil)
  >     (expr_list:REG_DEAD (reg:SI 0 %eax)
  >         (expr_list:REG_UNUSED (reg:SI 0 %eax)
  >             (nil))))
  > gcc: Internal compiler error: program cc1 got fatal signal 6
I don't have a ppro, nor do I know anything about the architecture.

Can the cmov instruction accept a constant as a source operand?

If so, then I would think that changing "rm,0" to "rmi,0" and "0,rm" to "0,rmi"
in movsicc_1 would fix this problem (and generate better code).  A similar change
to the other conditional move patterns would probably also be desirable.

Otherwise we'll have to come up with a more complicated fix.

jeff