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Re: i386/x86_64 HARD_REGNO_NREGS/ fix
- To: Jan Hubicka <jh at suse dot cz>
- Subject: Re: i386/x86_64 HARD_REGNO_NREGS/ fix
- From: Richard Henderson <rth at redhat dot com>
- Date: Sun, 8 Apr 2001 12:30:54 -0700
- Cc: gcc-patches at gcc dot gnu dot org, aj at suse dot de, patches at x86-64 dot org
- References: <20010408165907.A4872@atrey.karlin.mff.cuni.cz>
On Sun, Apr 08, 2001 at 04:59:07PM +0200, Jan Hubicka wrote:
> Can I add following testcase?
Yes.
> Whats about elliminating all clobber insns after reload?
No. That will badly affect post-reload register allocation
in peep2 and regrename.
> Has anyone considered possibility to teach flow about
> recognizing such per-partes loads?
Thought about, but done nothing.
> * i386.h (HARD_REGNO_NREGS): Handle properly TF and TCmodes on 64bit;
> handle properly complex values.
> (CLASS_MAX_NREGS): Likewise; update comment.
Ok.
r~