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2 Commits

Author SHA1 Message Date
Evan Cheng 0e6408124e Fix ctlz and cttz. llvm definition requires them to return number of bits in of the src type when value is zero. 
llvm-svn: 45029
 2007-12-14 08:30:15 +00:00
Evan Cheng e9fbc3f014 Implement ctlz and cttz with bsr and bsf. 
llvm-svn: 45024
 2007-12-14 02:13:44 +00:00