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Author SHA1 Message Date
Richard Sandiford 84f54a3bc9 [SystemZ] Use zeroing form of RISBG for some AND sequences 
RISBG can handle some ANDs for which no AND IMMEDIATE exists.
It also acts as a three-operand AND for some cases where an
AND IMMEDIATE could be used instead.

It might be worth adding a pass to replace RISBG with AND IMMEDIATE
in cases where the register operands end up being the same and where
AND IMMEDIATE is smaller.

llvm-svn: 186072
 2013-07-11 08:59:12 +00:00
Ulrich Weigand 9e3577ff44 [SystemZ] Add CodeGen test cases 
This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.

llvm-svn: 181204
 2013-05-06 16:17:29 +00:00