search for: scalariezd

Duncan, I also noticed cases where vector IR is scalariezd by the codegen. From what I have seen (which is based on a different vectorizer with a different code model, etc) there are two main areas for improvements: 1. Complex instructions - Instructions such as shuffles are very sensitive to the ability of the codegen to lower them. If a vectorizer gene...

Hi Hal, > As some of you may know, I committed my basic-block autovectorization > pass a few days ago. I encourage anyone interested to try it out (pass > -vectorize to opt or -mllvm -vectorize to clang) and provide feedback. > Especially in combination with -unroll-allow-partial, I have observed > some significant benchmark speedups, but, I have also observed some > significant

As some of you may know, I committed my basic-block autovectorization pass a few days ago. I encourage anyone interested to try it out (pass -vectorize to opt or -mllvm -vectorize to clang) and provide feedback. Especially in combination with -unroll-allow-partial, I have observed some significant benchmark speedups, but, I have also observed some significant slowdowns. I would like to share my