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Author SHA1 Message Date
Matt Arsenault 98f2946ab3 AMDGPU: Make better use of op_sel with high components 
Handle more general swizzles.

llvm-svn: 303296
 2017-05-17 20:30:58 +00:00
Matt Arsenault 786eeea23e AMDGPU: Try to use op_sel when selecting packed instructions 
Avoids instructions to pack a vector when the source is really
a scalar being broadcast.

Also be smarter and look for per-component fneg.

Doesn't yet handle scalar from upper half of register
or other swizzles.

llvm-svn: 303291
 2017-05-17 20:00:00 +00:00