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5 Commits

Author SHA1 Message Date
Simon Pilgrim b08c98f125 [X86][SSE] Add support for combining target shuffles to UNPCKL/UNPCKH. 
llvm-svn: 288663
 2016-12-05 11:25:13 +00:00
Simon Pilgrim 38d245197e [X86][AVX512] Add target shuffle tests showing missing UNPCK combines. 
llvm-svn: 288627
 2016-12-04 22:54:21 +00:00
Craig Topper cada9f2275 [AVX-512] Add support for commuting VPERMT2(B/W/D/Q/PS/PD) to/from VPERMI2(B/W/D/Q/PS/PD). 
Summary:
The index and one of the table operands can be swapped by changing the opcode to the other version. Neither of these operands are the one that can load from memory so this can't be used to increase memory folding opportunities.

We need to handle the unmasked forms and the kz forms. Since the load operand isn't being commuted we can commute the load and broadcast instructions too.

Reviewers: igorb, delena, Ayal, Farhana, RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25652

llvm-svn: 287621
 2016-11-22 04:57:34 +00:00
Simon Pilgrim 56c0524f0f [X86][AVX512] Added support for combining target shuffles to AVX512 VPERMV3 
llvm-svn: 284921
 2016-10-22 19:53:59 +00:00
Simon Pilgrim da814cba0d [X86][AVX512BWVL] Added support for combining target v16i16 shuffles to AVX512BWVL vpermw 
llvm-svn: 284860
 2016-10-21 19:40:29 +00:00