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Re: Regarding bug 22480, vectorisation of shifts
- From: Richard Henderson <rth at redhat dot com>
- To: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
- Cc: ubizjak at gmail dot com, GCC Development <gcc at gcc dot gnu dot org>
- Date: Thu, 1 Sep 2005 10:23:19 -0700
- Subject: Re: Regarding bug 22480, vectorisation of shifts
- References: <1125556035.43169f43ba4b3@ssl.kss-loka.si> <4316ACAA.50404@lu.unisi.ch>
On Thu, Sep 01, 2005 at 09:24:26AM +0200, Paolo Bonzini wrote:
> 1) in the vectorizer, check in the optab if the predicate for each
> operand of an insn accepts a register. If not, refuse vectorization if
> the corresponding gimple operand is not constant.
That sounds plausible, yes.
> By the way, it is time to remove the mmx_ prefix from the MMX insns!
No, it isn't. The emms patch doesn't work yet.
r~