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Commit Graph

5 Commits

Author SHA1 Message Date
Nadav Rotem
0740239f87 Revert r169638 because it broke Mesa llvmpipe tests.
Fix PR15239.

llvm-svn: 175985
2013-02-24 07:09:35 +00:00
Nadav Rotem
d3d6e7cfb2 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
79f1692fe0 Revert 147426 because it caused pr11696.
llvm-svn: 147485
2012-01-03 22:19:42 +00:00
Nadav Rotem
6929a8868b 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
d8c4880903 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