[llvm-dev] Using ConstantDataVector instead of ConstantVector
Alex Susu via llvm-dev
llvm-dev at lists.llvm.org
Wed Nov 9 01:30:06 PST 2016
I'm curious why can't I convert a Value like
<16 x i16> <i16 2, i16 2, i16 2, i16 2, i16 2, i16 2, i16 2... i16 2>
to ConstantVector - using llvm::dyn_cast<llvm::ConstantVector>() returns NULL.
However, converting it with dyn_cast to ConstantDataVector fortunately works.
Note that at http://llvm.org/docs/doxygen/html/classllvm_1_1ConstantDataVector.html
it is written "A vector constant whose element type is a simple 1/2/4/8-byte integer or
float/double", etc. This is a bit misleading, since vectors of bigger sizes can be used.
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