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6 Commits

Author SHA1 Message Date
Benjamin Kramer 99c68dd964 X86: Do splat promotion later, so the optimizer can chew on it first. 
This catches many cases where we can emit a more efficient shuffle for a
specific mask or when the mask contains undefs. Once the splat is lowered to
unpacks we can't do that anymore.

There is a possibility of moving the promotion after pshufb matching, but I'm
not sure if pshufb with a mask loaded from memory is faster than 3 shuffles, so
I avoided that for now.

llvm-svn: 173569
 2013-01-26 11:44:21 +00:00
Benjamin Kramer 7268a05178 FileCheckize and merge some tests. 
llvm-svn: 173568
 2013-01-26 11:14:32 +00:00
Craig Topper e57b49ee16 Add mcpu to tests to prevent them from using AVX instructions on Sandy Bridge after r155618. 
llvm-svn: 155696
 2012-04-27 07:11:58 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman 0d4bbf2c4a Remove obsolete -f flags. 
llvm-svn: 79992
 2009-08-25 15:38:29 +00:00
Mon P Wang f566eea614 Added shuffle and splat test cases for r61365. 
llvm-svn: 61366
 2008-12-23 04:05:08 +00:00