On Thu, Jan 23, 2014 at 2:56 PM, Chris Lattner <clatt...@apple.com> wrote: > On Jan 23, 2014, at 12:14 PM, Steven Bosscher <stevenb....@gmail.com> wrote: >> (Hint: read http://vmakarov.fedorapeople.org/spec/ as an example of a >> better-supported point of view.) > > Unrelated to this thread, it would be great for this web page to get updated. > You may find it to be "a better-supported point of view", but it is also > comparing against clang 3.2, which is from the end of 2012, and a lot has > changed since then. > > Modern clang versions have its autovectorizor on by default (like GCC's) and > generate much better code in general.
Correction -- unlike LLVM, autovectorizer is not turned on by default at O2 for GCC yet. David > http://www.phoronix.com/ has done some benchmarks across a wider range of > code than just spec (which is notoriously "hacked" by compiler developers) > and Clang generates better code (and faster) than GCC in many cases. > > -Chris
