Blackfin patch: Work around some more hardware anomalies

[Mark Mitchell]

Bernd Schmidt wrote:
> This patch renames a target option for clarity, and adds a new one to 
> work around another hardware erratum.  CSYNC/SSYNC instructions are not 
> supposed to occur too soon after predicted not taken conditional 
> branches, or at destinations of predicted taken conditional branches.
> 
> Mark, as a target maintainer, am I free to check in changes like this on 
> the 4.0 branch even though it is not a regression fix?

Yes.

For non-primary targets, I'm particularly lenient, but I do expect you 
to use your judgement to apply only critical changes, and not generic 
"nice to have" changes.

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com
(916) 791-8304