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Re: Vector types and type conversions

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: GCC Development <gcc at gcc dot gnu dot org>, aph at redhat dot com
Date: Wed, 19 Apr 2006 17:08:36 +0200
Subject: Re: Vector types and type conversions
References: <17478.12537.51193.943633@zapata.pink>

Andrew Haley wrote:

Converting a vector of floats (via a cast) to a vector of ints of the
same size uses a VIEW_CONVERT_EXPR, so the data are simply copied, not
converted.  This is different from a cast from scalar float to int,
where a conversion is performed.

From what I can see of the source, this is deliberate.

The short answer is that AltiVec dictated this behavior. :-( Longer answers were given by Ian and Paul, and I agree with them.

Paolo

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