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Re: [patch] extend.texi MIPS PS/3D Support

From: Paolo Bonzini <bonzini at gnu dot org>
To: Dorit Naishlos <DORIT at il dot ibm dot com>
Cc: Chao-ying Fu <fu at mips dot com>, gcc-patches at gcc dot gnu dot org, "Stephens, Nigel" <nigel at mercury dot mips dot com>, "Thekkath, Radhika" <radhika at mercury dot mips dot com>, Richard Sandiford <rsandifo at redhat dot com>, "Uhler, Mike" <uhler at mercury dot mips dot com>, Jim Wilson <wilson at specifixinc dot com>
Date: Tue, 28 Sep 2004 15:46:45 +0200
Subject: Re: [patch] extend.texi MIPS PS/3D Support
References: <20040927234323.GA31317@redhat.com> <OF5912A435.A1C0FA27-ONC2256F1D.0048F9FF-C2256F1D.0049C2B1@il.ibm.com>

The real problem is that you're pulling out SImode and deciding
that add_optab[SImode] is the vector addition operation.


but how come we get SImode here? we call build_vector_type with
innertype = SI, and
nunits = UNITS_PER_SIMD_WORD / nbytes = 8 / 4 = 2
so it should return a V2SI vectype, which is not supported by the target
and therefore should have a BLKmode. no?

Yes, it should. Generic vectors should not be created by the vectorizer (yet).

Paolo

Follow-Ups:
- Re: [patch] extend.texi MIPS PS/3D Support
  - From: Paolo Bonzini

References:
- Re: [patch] extend.texi MIPS PS/3D Support
  - From: Richard Henderson
- Re: [patch] extend.texi MIPS PS/3D Support
  - From: Dorit Naishlos

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