CIRCT  19.0.0git
HWInstanceGraph.cpp
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1 //===- HWInstanceGraph.cpp - Instance Graph ---------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
10 
11 using namespace circt;
12 using namespace hw;
13 
14 InstanceGraph::InstanceGraph(Operation *operation)
15  : igraph::InstanceGraph(operation) {
16  for (auto &node : nodes) {
17  // Note: we dyn_cast here because we cannot assume that _all_ nodes are
18  // HWModuleLike - there may be cases where hw.module's are mixed with
19  // other ops that implement the igraph::ModuleOpInterface.
20  auto hwModuleLikeNode =
21  dyn_cast<HWModuleLike>(node.getModule().getOperation());
22  if (hwModuleLikeNode && hwModuleLikeNode.isPublic())
23  entry.addInstance({}, &node);
24  }
25 }
26 
29  cast<igraph::ModuleOpInterface>(module.getOperation()));
30  if (module.isPublic())
31  entry.addInstance({}, node);
32  return node;
33 }
34 
36  for (auto *instance : llvm::make_early_inc_range(entry)) {
37  if (instance->getTarget() == node)
38  instance->erase();
39  }
41 }
HW-specific instance graph with a virtual entry node linking to all publicly visible modules.
void erase(igraph::InstanceGraphNode *node) override
Erases a module, updating links to entry.
igraph::InstanceGraphNode * addHWModule(HWModuleLike module)
Adds a module, updating links to entry.
InstanceGraph(Operation *operation)
igraph::InstanceGraphNode entry
This is a Node in the InstanceGraph.
InstanceRecord * addInstance(InstanceOpInterface instance, InstanceGraphNode *target)
Record a new instance op in the body of this module.
virtual InstanceGraphNode * addModule(ModuleOpInterface module)
Add a newly created module to the instance graph.
NodeList nodes
The storage for graph nodes, with deterministic iteration.
virtual void erase(InstanceGraphNode *node)
Remove this module from the instance graph.
This file defines an intermediate representation for circuits acting as an abstraction for constraint...
Definition: DebugAnalysis.h:21
Definition: hw.py:1