[Mlir-commits] [llvm] [mlir] [mlir] API to serialize bytecode to mmap'd buffer (PR #126953)

[River Riddle]

https://github.com/River707 requested changes to this pull request.

It's not yet clear to me the utility of this API. I'd prefer to keep the interface constrained to just going through raw_ostream, instead of adding additional API (especially for this one which has somewhat complex constraints/contract with the user).

It seems like the only thing really missing from the actual bytecode logic is to call `reserveExtraSpace` on the provided raw_ostream before the writeTo call? That would allow for custom ostreams to do whatever logic they need to enable avoiding multiple allocations when writing to a buffer.

https://github.com/llvm/llvm-project/pull/126953