[LLVMdev] target specific ways to extend ConstantExpr

[Yuan Lin]

I am looking for a way to allow ConstantExpr to express target specific operations, which will be used in global initializers.

The recommended way to extend LLVM IR is using intrinsic functions. But this does not work for ConstantExpr, which the global initializer uses.

Should we make ConstantExpr to support some kind of side-effect free intrinsic function calls? If we want to work on such a patch, what are the things we should look out for?

http://llvm.org/bugs/show_bug.cgi?id=10368 seems also express this desire.

Thanks.

Yuan




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