[llvm-dev] How to insert vector type input parameter for function in C/C++ API? (original) (raw)
Craig Topper via llvm-dev llvm-dev at lists.llvm.org
Mon Apr 10 16:59:30 PDT 2017
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There are quite a few different ways to make constant vectors. You can create a splat of integer constants by using ConstantInt::get(, ) The scalar value can be an uint64_t or an APInt. Of if you have a Constant * you want to splat you can use ConstantVector::getSplat. If it's not a splat, you can use ConstantDataVector::get which will take an array of uint8_t, uint16_t, uint32_t, or uin64_t and auto infer the width and element count. Or you can use ConstantVector::get which will take an array of individual Constant * that all have the same scalar type.
I don't have any complete code for implementing a function. Most of my interaction with these APIs has been in converting intrinsics into native IR in lib/IR/AutoUpgrade.cpp and clang's lib/CodeGen/CGBuiltin.cpp. I'm sure you'll find every function I mentioned above used in one or both of those files. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170410/df2e2db7/attachment-0001.html>
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