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Re: RFA: Avoiding unprofitable speculation

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On 08/18/11 15:59, Richard Henderson wrote:
> On 08/17/2011 12:21 AM, Richard Guenther wrote:
>> The patch itself looks sensible, though I am surprised ifcvt
>> doesn't run in cfglayout mode (so you have to use reg notes to
>> find probabilities ...)
> 
> It does run in cfglayout mode.
> 
> Jeff, I believe you're supposed to get the probabilities from some
> combination of
> 
> bb->frequency edge->probability EDGE_FREQUENCY(edge)
OK.  Here's the revised patch.  There's other places in ifcvt.c that
utilize the notes that I didn't modify.

Bootstrapped & regression tested x86_64-unknown-linux-gnu.  Also
verified performance data hasn't changed materially.

OK for trunk?

Thanks,
jeff


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