From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Hubicka <jh@suse.cz>
To: Richard Henderson <rth@cygnus.com>
Cc: gcc@gcc.gnu.org
Subject: Re: pre_inc/pre_dec/PUSH_ROUNDING inconsistency
Date: Mon, 17 Jul 2000 14:10:00 -0000
Message-id: <20000717231040.F27658@atrey.karlin.mff.cuni.cz>
References: <20000716160420.A26370@atrey.karlin.mff.cuni.cz> <20000717140714.D13024@cygnus.com>
X-SW-Source: 2000-07/msg00531.html

> On Sun, Jul 16, 2000 at 04:04:20PM +0200, Jan Hubicka wrote:
> > What do you think is the correct way off this situation? Modify the
> > emit_push_insn in explow.c to change push insn representation for example
> > to something like:
> > (set (mem/f:DI (pre_dec:DI (reg:DI sp)) (subreg:DI val)))
> > since thats what the instruction does?
> 
> I would think that widening the store like this to reflect the
> actual instruction is the only correct solution.
Yes, but whats about the floating point stores. I remember Jeff claiming
that (subreg:TF (reg:XF)) is incorrect...
is (subreg:TI (reg:XF)) better?
> 
> > (can I easilly convert number of bytes returned by push_rounding to mode?)
> 
> See smallest_mode_for_size.
Duh :)

Honza
> 
> 
> r~