tree 07bc39833aa84f154caa5213718c831fd8dffe3e
parent f65c5cb767f8d6a7d83dc3c9a8033f3c350e9b2e
author Ben Vanik <ben.vanik@gmail.com> 1675281579 -0800
committer GitHub <noreply@github.com> 1675281579 +0000
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Add `--output=` flag to iree-run-module/iree-run-mlir. (#12016)

This allows for ignoring outputs, routing them to stdout, or writing
them to numpy .npy files that can be easily loaded in python.

Example writing two outputs to an npy file:
`iree-run-module ... --output=@file.npy --output=+file.npy`
```py
with open('file.npy', 'rb') as f:
  print(numpy.load(f))
  print(numpy.load(f))
```

The `@` sigil will create/overwrite a file while the `+` sigil will
create/append. This allows for multiple outputs to route to the same
file even across runs (so you could run several times and accumulate the
results in a single npy to process later). Shorthand for writing all
outputs to an npy would be useful but is not yet implemented. We can
extend this in many ways in the future by supporting binary payload
writing (ala `--input=2xf32=@file.bin`), merging functionality with the
`--expected_output=` flags, etc. For now this is better than users
trying to string parse stdout, though :)

Progress on #9462 (still need to rename/clean up vm_util).