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Author SHA1 Message Date
Erik Eckstein
6ca2d8b7c7 fix: SLPVectorizer crashes for unreachable blocks containing not schedulable instructions. 
In unreachable blocks it's legal to have instructions like "%x = op %x".
Such instuctions are not schedulable. Therefore the SLPVectorizer has to check for
unreachable blocks and ignore them.

Fixes bug 20646.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216256 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-08-22 01:18:39 +00:00