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Author SHA1 Message Date
Ulrich Weigand
020e6c5a45 [SystemZ] Support load-and-zero-rightmost-byte facility 
This adds support for the LZRF/LZRG/LLZRGF instructions that were
added on z13, and uses them for code generation were appropriate.

SystemZDAGToDAGISel::tryRISBGZero is updated again to prefer LLZRGF
over RISBG where both would be possible.

llvm-svn: 286586
 2016-11-11 12:46:28 +00:00