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3 Commits

Author SHA1 Message Date
NAKAMURA Takumi
e51a69c8fd Relax expressions and add explicit triplets -linux and -win32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126200 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-22 07:19:46 +00:00
Benjamin Kramer
c9b6a3eb90 Fix an off-by-one error in ctpop combining. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123664 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 18:00:28 +00:00
Benjamin Kramer
d822892455 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123621 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 12:04:57 +00:00