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Re: disabling branch probability guessing (patch)
- To: Aldy Hernandez <aldyh at redhat dot com>
- Subject: Re: disabling branch probability guessing (patch)
- From: Richard Henderson <rth at redhat dot com>
- Date: Mon, 15 Jan 2001 14:34:19 -0800
- Cc: gcc-patches at gcc dot gnu dot org, wilson at redhat dot com
- References: <20010115181006.A8129@redhat.com>
On Mon, Jan 15, 2001 at 06:10:06PM -0400, Aldy Hernandez wrote:
> + /* This will try to guess branch probabilities. */
> + int flag_guess_branch_prob = 0;
Please default this to on, or ...
> + flag_guess_branch_prob = 1;
... do this at -O1, not -O2. This data is used in
if-conversion in addition to block reordering.
r~