[PATCH] Fix PR middle-end/26306

[Mark Mitchell]

Richard Kenner wrote:
>> However, if we do want to do this in the middle end, then checking 
>> TREE_ADDRESSABLE (rather than AGGREGATE_TYPE_P) might be better?  Not 
>> all aggregates have BLK_MODE, so the analogy with 3.4 isn't completely 
>> accurate.
> 
> It would seem to me that you need to check *both*, each for a different reason.

Why treat aggregates differently from scalars in this context?

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Mark Mitchell
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