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...d a series of benchmarks comparing Clang 3.4 performance against GCC 4.9 <http://www.phoronix.com/scan.php?page=article&item=llvm34_gcc49_compilers&num=1> ## On the mailing lists * Rafael Espíndola removed support for the 's' modifier in a DataLayout specification in commit [r198287](http://llvm-reviews.chandlerc.com/rL198287) and so writes how to work around this if your out of tree target relied on that modifier <http://article.gmane.org/gmane.comp.compilers.llvm.devel/69143> * Chandler Carruth asks a question about flags for instructions in .td files <http://threa...