[llvm-dev] How to understand LLVM-C API?
Peng Yu via llvm-dev
llvm-dev at lists.llvm.org
Mon Feb 18 10:53:01 PST 2019
I am learning LLVM-C API (I don't plan to learn the C++ API at this
moment.). I am able to get this example to compile and run.
However, I don't understand the usage of LLVMReplaceAllUsesWith().
// replace all uses of the old instruction with the new one
How can a value replace an instruction?
The reference is not helpful either. It shows both OldVal, NewVal are
just LLVMValueRef, why an instruction can be used as a value?
In general, the reference generated by doxygen is not good for
learning and the type hierarchy is too complex. Is there any more
effective materials for learning the C API.
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