llvm dev - Nov 2018 - llvm-3.9 Intrinsic::masked_gather in Intrinsic.td

I have a pass based on llvm-3.9 and I want to modify it so that it can work on
llvm-3.4.There is an error when I modify it.It is as follows:
error:no member named 'masked_gather' in namespace
'llvm::Intrinsic'
Value *gatherDecl = Intrinsic::getDeclaration(M, Intrinsic::masked_gather,


The 'masked_gather' is defined in Intrinsic.td in
llvm-3.9/include/llvm/IR. But there is no definition of 'masked_gather'
in Intrinsic.td in llvm-3.4/include/llvm/IR. So I want to know if there are some
other methods or variables on llvm-3.4 can implement the same function.Thank you
very much! Look forward to your reply!
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