[Torch] Clean up usage of try ... infer_value() ... except

[masahi]

This is a follow up to #6449 where some usage of exception-throwing infer_value is introduced. Following the discussion there, I attempted to clean up that usage with a new wrapper API. I think this is a reasonable change to add.

The following API is added. If this looks good, I'll add a doc string. See the example use in the Torch frontend.

def try_infer_value(val, on_success, on_failure):
    try:
        ret = infer_value(val, {}).asnumpy()
        return on_success(ret), True
    except Exception:
        return on_failure(), False

please review @kevinthesun @t-vi @siju-samuel

[masahi]

@tqchen I got a build error from utvm crt https://ci.tvm.ai/blue/organizations/jenkins/tvm/detail/PR-6504/2/pipeline

I don't understand why I'm getting an error from a file like crcccitt.c that doesn't exist. Maybe a build cache problem?

[leandron]

@tqchen I got a build error from utvm crt https://ci.tvm.ai/blue/organizations/jenkins/tvm/detail/PR-6504/2/pipeline

I don't understand why I'm getting an error from a file like crcccitt.c that doesn't exist. Maybe a build cache problem?

Yeah, I'm seeing the same on my PR as well.

[tqchen]

@masahi was due to a cmake cache problem that PR has been merged, please retrigger.

[kevinthesun]

LGTM

[masahi]

Thanks @kevinthesun @yongwww