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Re: Minor improvements to alias.c:nonoverlapping_memrefs_p
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Subject: Re: Minor improvements to alias.c:nonoverlapping_memrefs_p
- From: Richard Henderson <rth at redhat dot com>
- Date: Tue, 13 Nov 2001 16:28:39 -0800
- Cc: gcc-patches at gcc dot gnu dot org
- References: <10111111058.AA01544@vlsi1.ultra.nyu.edu>
On Sun, Nov 11, 2001 at 05:58:38AM -0500, Richard Kenner wrote:
> ! return ((CONSTANT_P (basex) && CONSTANT_P (basey))
> ! || (CONSTANT_P (basex) && REG_P (basey)
> ! && REGNO (basey) <= LAST_VIRTUAL_REGISTER)
> ! || (CONSTANT_P (basey) && REG_P (basex)
> ! && REGNO (basex) <= LAST_VIRTUAL_REGISTER));
This does not seem to me to be an appropriate way to test
for frame-pointer-ness. In particular, argument registers
may be base registers.
r~