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Andrew Lenharth 5e177826fd Implement count leading zeros (ctlz), count trailing zeros (cttz), and count
population (ctpop).  Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.

More coming soon.

llvm-svn: 21676
2005-05-03 17:19:30 +00:00
llvm Implement count leading zeros (ctlz), count trailing zeros (cttz), and count 2005-05-03 17:19:30 +00:00