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4 Commits

Author SHA1 Message Date
Nadav Rotem fdce33a495 The LIT tests below do not specify the exact cpu model and fail on AVX2 machines, because we select different instructions such as vbroadcast, new shuffles, etc. 
Patch by Michael Liao.

llvm-svn: 160129
 2012-07-12 13:45:15 +00:00
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