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Re: PPro and egcs
- To: law at cygnus dot com
- Subject: Re: PPro and egcs
- From: Joern Rennecke <amylaar at cygnus dot co dot uk>
- Date: Sat, 1 Nov 1997 01:10:36 +0000 (GMT)
- Cc: hjl at lucon dot org, egcs at cygnus dot com
> > # 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?