Hello, I am also interested in working on polyhedral model guided auto-vectorization. I went through the paper "Polyhedral-Model Guided Loop-Nest Auto-Vectorization", that you suggested. Does it use the GCC auto-vectorization algorithm to rewrite scalar instructions into vector instructions? Anywhere I can find the implementation prototype that you are talking about?
Regards, Umesh B. >Hi, > >Auto-Vectorization is still implemented in the 'old'- non polyhedral way. >Polyhedral model can only help drive the vectorization strategies. >What is happening is that Graphite (polyhedral model framework inside GCC) >is setting the flag on the loop that it thinks should be vectorized. >Later, the vectorizer pass is performing the vectorization - by rewritting >scalar instructions into vector instructions. > >Please have a look at the paper "Polyhedral-Model Guided Loop-Nest >Auto-Vectorization". > >Konrad > > >2011/11/15 steven su <steven.kn...@gmail.com>: >> Hi, >> Can anyone explain whether GCC has implemented Auto-Vectorization >> based on Polyhedral Model? >> Are there any related projects shooting at this, and ?in progress? >> >> Steven. >>
