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Author SHA1 Message Date
Hal Finkel 2eaadd1a2d BBVectorize: Fix a small bug introduced in r167042. 
We need to make sure that we take the correct load/store alignment
when the inputs are flipped.

llvm-svn: 167044
 2012-10-30 19:47:37 +00:00
Hal Finkel 931c52b84c BBVectorize should ignore unreachable blocks. 
Unreachable blocks can have invalid instructions. For example,
jump threading can produce self-referential instructions in
unreachable blocks. Also, we should not be spending time
optimizing unreachable code. Fixes PR14133.

llvm-svn: 166423
 2012-10-22 18:00:55 +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