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Re: RFC: Simplify rules for ctz/clz patterns and RTL
- From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- To: zack at codesourcery dot com
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 11 Aug 2007 06:57:33 EDT
- Subject: Re: RFC: Simplify rules for ctz/clz patterns and RTL
- References: <46BD5B17.9080009@codesourcery.com>
> * Since no one uses it, we rip out all support for the ffs pattern and
> expression.
There's an ffs builtin! How do we know who uses it?
Moreover, expmed uses it as an option in expanding some comparisons.