PPro and egcs

Jeffrey A Law law@cygnus.com
Fri Oct 31 17:23:00 GMT 1997


  In message < 199711010110.BAA00592@phal.cygnus.co.uk >you write:
  > >   > # 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
  > > Well, I've got my ppro running, and I've actually been able to trip this
  > > problem.  No clue why I couldn't get it to trip with my cross compiler.
  > > 
  > > It's a tough little nut to crack, largly because of reload's insistence
  > > on replacing regs with CONST_INTs when the register has a REG_EQUIV note.
  > 
  > movsicc_1 uses general_operand as constraint, which is clearly wrong if
  > a CONST_INT isn't acceptable.  Have you tried to replace this with
  > nonimmediate_operand?
Yes.
jeff



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