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3 Commits

Author SHA1 Message Date
NAKAMURA Takumi 83c40bc7ad Relax expressions and add explicit triplets -linux and -win32. 
llvm-svn: 126200
 2011-02-22 07:19:46 +00:00
Benjamin Kramer 45d183ccf0 Fix an off-by-one error in ctpop combining. 
llvm-svn: 123664
 2011-01-17 18:00:28 +00:00
Benjamin Kramer 24c5184dca Add a DAGCombine to turn (ctpop x) u< 2 into (x & x-1) == 0. 
This shaves off 4 popcounts from the hacked 186.crafty source.

This is enabled even when a native popcount instruction is available. The
combined code is one operation longer but it should be faster nevertheless.

llvm-svn: 123621
 2011-01-17 12:04:57 +00:00