Closes tensorflow/mlir#172 COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/mlir/pull/172 from kiszk:quantops e27b57eac8f4c6ef7ee6a6f7b497d3e2f56f6798 PiperOrigin-RevId: 273879164
Closes tensorflow/mlir#172 COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/mlir/pull/172 from kiszk:quantops e27b57eac8f4c6ef7ee6a6f7b497d3e2f56f6798 PiperOrigin-RevId: 273879164