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Re: Dead-code elimination can't remove string copy insns?

From: Richard Henderson <rth at redhat dot com>
To: Michael Matz <matz at suse dot de>
Cc: Zack Weinberg <zack at codesourcery dot com>, gcc at gcc dot gnu dot org
Date: Tue, 13 May 2003 14:55:28 -0700
Subject: Re: Dead-code elimination can't remove string copy insns?
References: <87addrpu7r.fsf@egil.codesourcery.com> <Pine.LNX.4.44.0305131128250.15564-100000@wotan.suse.de>

On Tue, May 13, 2003 at 11:30:12AM +0200, Michael Matz wrote:
> Exactly.  We don't track dead stores to memory.

Well, we do, but it only works on tail blocks.  See
the end of init_propagate_block_info and insn_dead_p.


r~

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