Tyler Nowicki c1a86f5866 Late evaluation of the fast-math vectorization requirement. ...

This patch moves the verification of fast-math to just before vectorization is done. This way we can tell clang to append the command line options would that allow floating-point commutativity. Specifically those are enableing fast-math or specifying a loop hint. 

llvm-svn: 244489

2015-08-10 19:51:46 +00:00

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