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Re: Using shifts by 1 on K6,K7 and i386
- To: Martin Erhardsen <MartinErhardsen at mail dot tele dot dk>
- Subject: Re: Using shifts by 1 on K6,K7 and i386
- From: Richard Henderson <rth at cygnus dot com>
- Date: Thu, 6 Jul 2000 17:24:47 -0700
- Cc: gcc at gcc dot gnu dot org
- References: <000701bfe33f$1e751e60$b495f9c3@mincomputer>
On Sat, Jul 01, 2000 at 11:30:56AM +0200, Martin Erhardsen wrote:
> I propose that the current predicate for using shifts
> and rotates by 1
>
> (TARGET_PENTIUM || TARGET_PENTIUMPRO)
>
> be replaced by this
>
> (!TARGET_I486 || optimize_size)
Actaully, if any change is made, it should be of the form
`TARGET_USE_SHIFT1', much like the existing TARGET_USE_LEAVE
and friends.
r~