251f57160a
This PR updated the intrinsic lowering pass to support the new op registry and avoid overloading the global tvm registry. Meanwhile, it kept the fallback mechanism to find the most suitable lower intrinsic function, e.g., llvm.FLowerIntrinsic vs. default.FLowerIntrinsic. All previous op registration are ported to new functions, and some missing ops would be added in separate PR.