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Author SHA1 Message Date
Nadav Rotem b532fca92c Revert r169638 because it broke Mesa llvmpipe tests. 
Fix PR15239.

llvm-svn: 175985
 2013-02-24 07:09:35 +00:00
Nadav Rotem ad0b5fbe8c When we use the BLEND instruction that uses the MSB as a mask, we can remove 
the VSRI instruction before it since it does not affect the MSB.

Thanks Craig Topper for suggesting this.

llvm-svn: 169638
 2012-12-07 21:43:11 +00:00
Nadav Rotem 6d31bac85e Revert 147426 because it caused pr11696. 
llvm-svn: 147485
 2012-01-03 22:19:42 +00:00
Nadav Rotem 6c7a0e6c8b Optimize the sequence blend(sign_extend(x)) to blend(shl(x)) since SSE blend instructions only look at the highest bit. 
llvm-svn: 147426
 2012-01-02 08:05:46 +00:00
Nadav Rotem 3c3dd6e588 PR11662. 
Promotion of the mask operand needs to be done using PromoteTargetBoolean, and not padded with garbage.

llvm-svn: 147309
 2011-12-28 13:08:20 +00:00