logo::RemoveForwardNodePass Struct Reference

Use the input of "Forward" node instead. More...

#include <RemoveForwardNodePass.h>

Collaboration diagram for logo::RemoveForwardNodePass:

Public Member Functions
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

Use the input of "Forward" node instead.

BEFORE: [X] -> [Forward] -> [Y]

AFTER: [X] -> [Y] [Forward]

NOTE This transform does not remove "Forward" node

Definition at line 37 of file RemoveForwardNodePass.h.

Member Function Documentation

name()

const char * logo::RemoveForwardNodePass::name ( void  ) const

inlinefinalvirtual

Reimplemented from logo::Pass.

Definition at line 39 of file RemoveForwardNodePass.h.

{ return "RemoveForwardNodePass"; }

run()

bool logo::RemoveForwardNodePass::run ( loco::Graph *  graph )

finalvirtual

Run the pass.

Returns

false if there was nothing changed

Implements logo::Pass.

Definition at line 27 of file RemoveForwardNodePass.cpp.

{
  struct Collector final : public loco::CanonicalNodeMutableVisitor<void>
  {
    void visit(loco::Forward *node) final
    {
      if (node->input() != nullptr)
      {
        candidates.insert(node);
      }
    }
 
    void visit(loco::Node *) final { return; }
 
    std::set<loco::Forward *> candidates;
  };
 
  Collector collector;
 
  for (auto node : loco::all_nodes(g))
  {
    if (node->dialect() == loco::CanonicalDialect::get())
    {
      auto canonical_node = loco::must_cast<loco::CanonicalNode *>(node);
      canonical_node->accept(&collector);
    }
  }
 
  for (auto node : collector.candidates)
  {
    replace(node).with(node->input());
    node->input(nullptr);
  }
 
  return collector.candidates.size() > 0;
}

References loco::all_nodes(), loco::CanonicalDialect::get(), loco::Forward::input(), and loco::Subst< SubstQualifier::Default >::with().

Referenced by package.infer.session::inference().

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

• compiler/logo/include/logo/RemoveForwardNodePass.h
• compiler/logo/src/Passes/RemoveForwardNodePass.cpp