more on 17107

[Nathan Sidwell]

Here is an example of the sCOND expanders being inconsistent.
Signed greater-than generates a branch sequence (because the sgt expander
is disabled on non-power arches).  Unsigned greater-than generates an
extraction from the CCR (because the sgtu expander is not disabled).
One of these sequences, with the appropriate comparision instruction, must
be better for *both* signed and unsigned greater than -- which one is it?

nathan
-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::     CodeSourcery LLC
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk

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