the motivations:
* make the actual input size available to the backends.
(currently the backends have to make a guess from shape/type.)
* make the host logic look a bit similar to wasi_ephemeral_nn.
this is a backend api/abi change.
- wasi_nn.h: make this compatible with wasi_ephemeral_nn
cf. https://github.com/bytecodealliance/wasm-micro-runtime/issues/4323
- fix WASM_ENABLE_WASI_EPHEMERAL_NN build
this structure is used by host logic as well.
ideally definitions for wasm and host should be separated.
until it happens, check __wasm__ to avoid the breakage.
* this enum is (@witx tag u8) in witx
* it seems that some wasm modules actually use non-zero padding
and cause errors
* it's a bad practice to use C enum for ABI description anyway
sync with a more appropriate version of the definitions.
as we use the "wasi_ephemeral_nn", which is p1-based, it seems
more appropriate to use definitions from witx, not wit.
it's a bit unfortunate p2-based wasi-nn made gratuitous changes
like this from p1.
note: this is an ABI change.
- All files under *core/iwasm/libraries/wasi-nn* are compiled as shared libraries
- *wasi-nn.c* is shared between backends
- Every backend has a separated shared library
- If wasi-nn feature is enabled, iwasm will depend on shared library libiwasm.so
instead of linking static library libvmlib.a
Major changes:
- Public headers inside `wasi-nn/include`
- Put cmake files in `cmake` folder
- Make linux iwasm link with `${WASI_NN_LIBS}` so iwasm can enable wasi-nn
