Craig Topper e7ca6f5456 [DAGCombiner] When combining zero_extend of a truncate, only mask before extending for vectors. ...

Masking first, prevents the extend from being combine with loads. Its also interfering with some vXi1 extraction code.

Differential Revision: https://reviews.llvm.org/D42679

llvm-svn: 326500

2018-03-01 22:32:25 +00:00

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