Scott Michel 16627a542f 1. Insert custom lowering hooks for ISD::ROTR and ISD::ROTL. ...

2. Help DAGCombiner recognize zero/sign/any-extended versions of ROTR and ROTL
patterns. This was motivated by the X86/rotate.ll testcase, which should now
generate code for other platforms (and soon-to-come platforms.) Rewrote code
slightly to make it easier to read.

llvm-svn: 35605

2007-04-02 21:36:32 +00:00

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