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Re: CPS common subexpression elimination landed

From: Andy Wingo
Subject: Re: CPS common subexpression elimination landed
Date: Tue, 08 Apr 2014 09:13:37 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

On Mon 07 Apr 2014 09:44, Andy Wingo <address@hidden> writes:

> The differences are these:

One more difference.  The old pass did a form of interprocedural CSE,
which was pretty neat.  The new pass does not do that.  Mostly the
reason it does not do so is to reduce complexity.  The other reason is
that the new pass runs after contification, so it sees bigger functions
than the old pass did, which had no way to understand contification.

Still, it's a limitation.  Oh well.


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