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3 Commits

Author SHA1 Message Date
Simon Pilgrim 09832e33b4 [SLPVectorizer] Ensure alternate/passthrough doesn't vectorize sdiv with undef elts 
llvm-svn: 336809
 2018-07-11 14:34:43 +00:00
Simon Pilgrim 9d3ef8ee2b [SLPVectorizer] Support alternate opcodes in tryToVectorizeList 
Enable tryToVectorizeList to support InstructionsState alternate opcode patterns at a root (build vector etc.) as well as further down the vectorization tree.

NOTE: This patch reduces some of the debug reporting if there are opcode mismatches - I can try to add it back if it proves a problem. But it could get rather messy trying to provide equivalent verbose debug strings via getSameOpcode etc.

Differential Revision: https://reviews.llvm.org/D48488

llvm-svn: 335364
 2018-06-22 16:37:34 +00:00
Simon Pilgrim 229a781214 [SLPVectorizer][X86] Add alternate opcode tests for simple build vector cases 
llvm-svn: 335348
 2018-06-22 13:53:58 +00:00