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Revert rL344933 from llvm/trunk: [X86][SSE] Tidyup DecodeVPERMILPMask shuffle mask...
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 22 Oct 2018 18:58:32 +0000 (18:58 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 22 Oct 2018 18:58:32 +0000 (18:58 +0000)
commit794f85cd937c7a169050f9c1b9b678357ce04a46
tree8a1bcb5a7e7e1267b4f573400d64d9896632f89btree | snapshot
parent036e54d32ef9ad7f8e1f7f277ec96338bc26eac5commit | diff
Revert rL344933 from llvm/trunk: [X86][SSE] Tidyup DecodeVPERMILPMask shuffle mask decoding
We can't safely assume that certain RawMask entries are UNDEF as most variable shuffles ignore non-index bits.
........
Add support for UNDEF raw mask elements and remove the ConstantPool DecodeVPERMILPMask usage in X86ISelLowering.cpp

llvm-svn: 344936
llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp diff | blob | history
llvm/lib/Target/X86/X86ISelLowering.cpp diff | blob | history
Domain: System / Toolchain;