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Re: Why the V4QImode vector operations are expanded into many SImode at "oplower" pass?

From: Ian Lance Taylor <ian at airs dot com>
To: "Ling-hua Tseng" <uranus at it dot muds dot net>
Cc: Paolo Bonzini <bonzini at gnu dot org>, gcc at gcc dot gnu dot org
Date: 18 May 2005 12:54:03 -0400
Subject: Re: Why the V4QImode vector operations are expanded into many SImode at "oplower" pass?
References: <000301c55bbb$c896dfb0$0201a8c0@uranus><d6fmnv$37j$1@sea.gmane.org> <20050518153652.M44026@it.muds.net>

"Ling-hua Tseng" <uranus@it.muds.net> writes:

> I have tried to adjust the constraints to 'r' (general registers) for 
> the "movv4qi" and "addv4qi" insn patterns,
> but I got the same problem.

What about HARD_REGNO_MODE_OK?

Ian

Follow-Ups:
- Re: Why the V4QImode vector operations are expanded into many SImode at "oplower" pass?
  - From: Ling-hua Tseng

References:
- Why the V4QImode vector operations are expanded into many SImode at "oplower" pass?
  - From: Ling-hua Tseng
- Re: Why the V4QImode vector operations are expanded into many SImodeat "oplower" pass?
  - From: Paolo Bonzini
- Re: Why the V4QImode vector operations are expanded into many SImode at "oplower" pass?
  - From: Ling-hua Tseng

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