Class to propagate quantization parameters of an operator's output to input. More...

#include <PropagateQParamBackwardPass.h>

Collaboration diagram for luci::PropagateQParamBackwardPass:

Public Member Functions
	PropagateQParamBackwardPass (loco::DataType output)

const char *	name (void) const final

bool	run (loco::Graph *g) final
	Run the pass.

Public Member Functions inherited from logo::Pass
virtual	~Pass ()=default

Detailed Description

Class to propagate quantization parameters of an operator's output to input.

Definition at line 28 of file PropagateQParamBackwardPass.h.

Constructor & Destructor Documentation

◆ PropagateQParamBackwardPass()

luci::PropagateQParamBackwardPass::PropagateQParamBackwardPass ( loco::DataType output )

inline

Definition at line 30 of file PropagateQParamBackwardPass.h.

30: _output_model_dtype(output) {}

Member Function Documentation

◆ name()

const char * luci::PropagateQParamBackwardPass::name ( void ) const

inlinefinalvirtual

Reimplemented from logo::Pass.

Definition at line 32 of file PropagateQParamBackwardPass.h.

32{ return "luci::PropagateQParamBackwardPass"; }

◆ run()

bool luci::PropagateQParamBackwardPass::run ( loco::Graph * graph )

finalvirtual

Run the pass.

Returns: false if there was nothing changed

Implements logo::Pass.

Definition at line 512 of file PropagateQParamBackwardPass.cpp.

{
  LOGGER(l);
 
  // We use reverse post-order traversal as qparam is propagated backward
  auto nodes = loco::postorder_traversal(loco::output_nodes(g));
  std::reverse(nodes.begin(), nodes.end());
  for (auto node : nodes)
  {
    auto circle_node = loco::must_cast<luci::CircleNode *>(node);
    INFO(l) << "PropagateQParamBackwardPass visit node: " << circle_node->name() << std::endl;
 
    // We can't propagate non-existent qparam
    if (circle_node->quantparam() == nullptr)
      continue;
 
    PropagateQParamBackward pqb;
    circle_node->accept(&pqb);
  }
 
  // This pass is only run once, so return false
  // TODO Refactoring not to return meaningless value
  return false;
}

References INFO, LOGGER, loco::output_nodes(), and loco::postorder_traversal().

Referenced by luci::QuantizeOnnxFakeQuantModelPass::run(), and luci::QuantizeWithMinMaxPass::run().

The documentation for this struct was generated from the following files: