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Re: 2.95, x86: severe performance problems with short arithmetic
- To: Zack Weinberg <zack@bitmover.com>
- Subject: Re: 2.95, x86: severe performance problems with short arithmetic
- From: Jeffrey A Law <law@cygnus.com>
- Date: Wed, 11 Aug 1999 13:01:23 -0600
- cc: Richard Henderson <rth@cygnus.com>, John Wehle <john@feith.com>, gcc@gcc.gnu.org
- Reply-To: law@cygnus.com
In message <199908111829.LAA04319@zack.bitmover.com>you write:
> Right... then we should focus on improving the new backend for 2.96.
> An approach occurred to me in the shower:
>
> At RTL generation time, pretend that there are no HImode operations
> other than load/store. For example, we'd produce
rth has already tried this and reported that it was generally a lose.
We already have these kinds of capabilities because most risc chips work in
this manner.
jeff