Expose the quantized inputs and output of dynamic quantized int8 FC operator for debugging (#23566)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23566
Currently if we use dynamic quantization we don't have the access to the internally quantized inputs and output for debugging.
To make the debugging easier, this diff adds a debug feature to expose the quantized X, W and Y for debugging if debug outputs are attached to the operator and caffe2_dnnlowp_force_slow_path flag is set.
The quantized inputs and output are exposed as the extra outputs.
The example Int8FC op with debug outputs appended looks like:
```
op {
input: "X"
input: "W"
input: "b"
output: "Y"
output: "X_q"
output: "W_q"
output: "Y_q"
name: ""
type: "Int8FC"
arg {
name: "axis"
i: 1
}
...
}
```
Next need to expose the quantization parameters.
Reviewed By: jspark1105
Differential Revision: D16566753
fbshipit-source-id: acd855a172ee7993ddba8808f2af81b628ff9c02
