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Re: Patch: scheduling vs variable arrays


On Thursday, August 8, 2002, at 04:56 PM, Geoff Keating wrote:
- I think it would be better to use (clobber (mem:BLK (reg:P sp)))
  because that makes it clear that only stack memory is involved.
On second thought Richard Henderson's comment below suggests this won't
work:

 Ideally we'd just clobber all stack memory, but
we need this special form in order to match bits marked
with RTX_UNCHANGING_P.  Which IMO is sort of a historical
mistake for any stack variable.






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