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Re: cfg merge part 11 - high level branch predictors
- From: Richard Henderson <rth at redhat dot com>
- To: Jan Hubicka <jh at suse dot cz>
- Cc: gcc-patches at gcc dot gnu dot org, gcc-pdo at atrey dot karlin dot mff dot cuni dot cz
- Date: Tue, 7 May 2002 10:26:20 -0700
- Subject: Re: cfg merge part 11 - high level branch predictors
- References: <20020306200917.GE14080@atrey.karlin.mff.cuni.cz> <20020506151319.F13494@redhat.com> <20020507102409.GJ24313@atrey.karlin.mff.cuni.cz>
On Tue, May 07, 2002 at 12:24:09PM +0200, Jan Hubicka wrote:
> > Why bother deleting unreachable blocks before tagging jump insns?
>
> Because we can't compute dominatorship otherwise (the Tarjan's algorithm
> just fails for disconnected graphs).
Ah, ok.
r~