commit e309cb38072ec909f43bc816b9fb64005d13fecd
author Ben Vanik <ben.vanik@gmail.com> Wed Feb 01 11:59:39 2023 -0800
committer GitHub <noreply@github.com> Wed Feb 01 19:59:39 2023 +0000
tree 07bc39833aa84f154caa5213718c831fd8dffe3e
parent f65c5cb767f8d6a7d83dc3c9a8033f3c350e9b2e

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).