On Wed, Jun 28, 2023 at 12:32:51PM +0000, Richard Biener wrote:
> As said there's nothing run after NRV.
There is expansion but in the <result> case I strongly doubt we are trying
to stack reuse it for other vars, so maybe it is ok.
> > On the other side, could there be partial clobbers for the var -> <result>,
> > var.fld = {CLOBBER};
> > ? Or even worse, indirect clobbers (MEM_REF with SSA_NAME pointing to
> > var or parts of it)?
>
> We know that 'var' is not address taken, not sure about the partial
> clobbers. We could deal with this in the walk_gimple_op case and
> simply remove a clobber when data.modified.
LGTM.
Jakub
