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Re: [PATCH] Fix *two* AVR backend bugs (PR19293 + PR19329)

Paul Schlie wrote: 
From: Paul Schlie <schlie@comcast.net>
...         (minimally, likely doing nothing for out-of-range shifts, as
generating code to implement an undefined behavior may not be necessarily
prudent?)


Although acknowledge that a saturating behavior for non-negative shifts may
be desirable if the middle-end presumes ((x >> y) >> y) :: (x >> (2 * y)),
or it's analogy for left-shifts; but it's not clear that it officially does?


For arithmetical right shifts > N, we may also want to
fill the result with the sign bit instead of clearing.

--
 // Bernardo Innocenti - Develer S.r.l., R&D dept.
\X/  http://www.develer.com/

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