areusch opened a new pull request #7398:
URL: https://github.com/apache/tvm/pull/7398
This PR is a follow-on to #7002 and continues its work to support BYOC
functions with the `llvm` TVM target with the C runtime. Though the BYOC flow
is supported with the TVM C++ runtime, this support depends heavily on `dlsym`
and shared library support, neither of which are required to use the TVM C
runtime.
This PR can roughly be thought of in these parts:
- Build a corresponding `runtime.CreateLLVMCrtMetadataModule` PackedFunc to
the `runtime.CreateCSourceCrtMetadataModule`. Also add `crt` here to
distinguish between these metadata modules (which are intended to be compiled)
and runtime::MetadataModule (which is intended to be directly loaded into the
TVM compiler c++ runtime)
- Move FuncRegistry and TVMSystemLibEntryPoint LLVM generator into a new
LLVMModule instance. Change function registry to declare extern functions
rather than using internal linkage.
- Allow `tvm.micro.build_static_runtime` to accept object files from the
LLVM backend. This temporarily solution allows us to build `llvm`-targeted code
using microTVM.
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