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Re: Question on scalar replacement

From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
To: dnovillo at redhat dot com
Cc: gcc at gcc dot gnu dot org
Date: Mon, 14 Jun 04 11:11:07 EDT
Subject: Re: Question on scalar replacement

    The C gimplifier always creates a scalar LHS:

	a.f = foo ()

    is gimplified into

	temp = foo ()
	a.f = temp

Note that if a.f is not a scalar, this is a transformation that can
cause a large copy.

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