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Author SHA1 Message Date
Hal Finkel 5cad8742cc Correctly vectorize powi. 
The powi intrinsic requires special handling because it always takes a single
integer power regardless of the result type. As a result, we can vectorize
only if the powers are equal. Fixes PR12364.

llvm-svn: 153797
 2012-03-31 03:38:40 +00:00
Hal Finkel c34e51132c Add a basic-block autovectorization pass. 
This is the initial checkin of the basic-block autovectorization pass along with some supporting vectorization infrastructure.
Special thanks to everyone who helped review this code over the last several months (especially Tobias Grosser).

llvm-svn: 149468
 2012-02-01 03:51:43 +00:00