Enumerate the SCCs of a directed graph in reverse topological order of the SCC DAG. More...
#include "llvm/ADT/SCCIterator.h"
Public Member Functions | |
| bool | isAtEnd () const |
Direct loop termination test which is more efficient than comparison with end(). | |
| bool | operator== (const scc_iterator &x) const |
| scc_iterator & | operator++ () |
| reference | operator* () const |
| bool | hasCycle () const |
| Test if the current SCC has a cycle. | |
| void | ReplaceNode (NodeRef Old, NodeRef New) |
This informs the scc_iterator that the specified Old node has been deleted, and New is to be used in its place. | |
 Public Member Functions inherited from llvm::iterator_facade_base< DerivedT, IteratorCategoryT, T, DifferenceTypeT, PointerT, ReferenceT > | |
| DerivedT | operator+ (DifferenceTypeT n) const |
| DerivedT | operator- (DifferenceTypeT n) const |
| DerivedT & | operator++ () |
| DerivedT | operator++ (int) |
| DerivedT & | operator-- () |
| DerivedT | operator-- (int) |
| bool | operator!= (const DerivedT &RHS) const |
| bool | operator> (const DerivedT &RHS) const |
| bool | operator<= (const DerivedT &RHS) const |
| bool | operator>= (const DerivedT &RHS) const |
| PointerProxy | operator-> () const |
| ReferenceProxy | operator[] (DifferenceTypeT n) const |
Static Public Member Functions | |
| static scc_iterator | begin (const GraphT &G) |
| static scc_iterator | end (const GraphT &) |
Additional Inherited Members | |
| Public Types inherited from llvm::iterator_facade_base< DerivedT, IteratorCategoryT, T, DifferenceTypeT, PointerT, ReferenceT > | |
| using | iterator_category = IteratorCategoryT |
| using | value_type = T |
| using | difference_type = DifferenceTypeT |
| using | pointer = PointerT |
| using | reference = ReferenceT |
| Protected Types inherited from llvm::iterator_facade_base< DerivedT, IteratorCategoryT, T, DifferenceTypeT, PointerT, ReferenceT > | |
| enum | { IsRandomAccess , IsBidirectional } |
Detailed Description
class llvm::scc_iterator< GraphT, GT >
Enumerate the SCCs of a directed graph in reverse topological order of the SCC DAG.
This is implemented using Tarjan's DFS algorithm using an internal stack to build up a vector of nodes in a particular SCC. Note that it is a forward iterator and thus you cannot backtrack or re-visit nodes.
Definition at line 46 of file SCCIterator.h.
Member Function Documentation
◆ begin()
|
inlinestatic |
◆ end()
|
inlinestatic |
Definition at line 108 of file SCCIterator.h.
Referenced by llvm::scc_end().
◆ hasCycle()
| bool llvm::scc_iterator< GraphT, GT >::hasCycle |
Test if the current SCC has a cycle.
If the SCC has more than one node, this is trivially true. If not, it may still contain a cycle if the node has an edge back to itself.
Definition at line 219 of file SCCIterator.h.
◆ isAtEnd()
|
inline |
Direct loop termination test which is more efficient than comparison with end().
Definition at line 112 of file SCCIterator.h.
References assert().
◆ operator*()
|
inline |
Definition at line 126 of file SCCIterator.h.
References assert().
◆ operator++()
|
inline |
Definition at line 121 of file SCCIterator.h.
◆ operator==()
|
inline |
Definition at line 117 of file SCCIterator.h.
◆ ReplaceNode()
|
inline |
This informs the scc_iterator that the specified Old node has been deleted, and New is to be used in its place.
Definition at line 139 of file SCCIterator.h.
References assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::erase().
Referenced by llvm::CallGraphSCC::ReplaceNode().
The documentation for this class was generated from the following file:
- include/llvm/ADT/SCCIterator.h
