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Author SHA1 Message Date
Chris Lattner 2b459fe7e1 fix indentation of switch statements, no functionality change. 
llvm-svn: 93106
 2010-01-10 06:59:55 +00:00
Chris Lattner a1e223ea10 teach instcombine to delete sign extending shift pairs (sra(shl X, C), C) when 
the input is already sign extended.

llvm-svn: 93019
 2010-01-08 19:04:21 +00:00
Chris Lattner dc67e13442 split instcombine of shifts out to its own file. 
llvm-svn: 92709
 2010-01-05 07:44:46 +00:00