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3 Commits

Author SHA1 Message Date
Simon Pilgrim
3b4ac7dc2a [InstCombine][X86][AVX] Add DemandedElts support for VPERMILPD/VPERMILPS instructions 
Simplify a vpermilvar shuffle mask based on the elements of the mask that are actually demanded.

llvm-svn: 292209
 2017-01-17 11:35:03 +00:00
Simon Pilgrim
b3d302c9e0 [InstCombine][AVX] Tests showing missed opportunities to pass demanded elts through a permilpd/permilps shuffle mask 
llvm-svn: 292165
 2017-01-16 21:34:22 +00:00
Craig Topper
e978214668 [AVX-512][InstCombine] Add 512-bit vpermilvar intrinsics to InstCombineCalls to match 128 and 256-bit. 
llvm-svn: 289354
 2016-12-11 01:59:36 +00:00