On Fri, Sep 19, 2014 at 5:31 PM, Matt Turner <matts...@gmail.com> wrote:
> On Fri, Sep 19, 2014 at 1:10 PM, Jason Ekstrand <ja...@jlekstrand.net> > wrote: > > The original vgrf splitting code was written assuming that with the > > assumption that vgrfs came in two types: those that can be split into > > s/ with the assumption that// > > > single registers and those that can't be split at all > > Period > > > It was very > > conservative and bailed as soon as more than one element of a register > was > > read or written. This won't work once we start allowing a regular MOV or > > ADD operation to operate on multiple registers. This rewrite allows for > > the case where a vgrf of size 5 may appropreately be split in to one > > appropriately > Typos fixed. > > > register of size 1 and two registers of size 2. > > I'm not sure I understand enough yet to review.
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