On Sun, Jan 19, 2014 at 6:01 PM, Swati Rathi <swatira...@cse.iitb.ac.in> wrote: > We are writing a GIMPLE pass and would like to use some information computed > in > pass_vectorize. However, we are not able to use the data structures which > gets populated in pass_vectorize > because the information is not made available across passes. > > In particular, we wish to access the structures "stmt_vec_info" and > "data_reference". > > How do we access this information? Should we invoke pass_vectorize as a > sub-pass of our pass? Should > we explicitly call the execute function of pass_vectorize in our pass? Or > should we modify pass_vectorize > code and make a deep copy in a global variable? Is there any other way of > getting this information?
It really depends on what kind of information you want to access. You can re-compute things in your pass, or you can make your pass part of the vectorizer (thus, modify the vectorizer pass). In particular data_reference is just what the data-reference analysis usable from any pass (tree-data-ref.h) produces. But without more information on what information exactly you want to access (and where - where is your pass placed compared to the vectorizer?) it is hard to suggest anything. Richard.
