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Substantial revamp: DSGraphs now may contain the graphs for multiple functions

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in the same graph


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6991 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-06-30 03:14:23 +00:00
parent 1a36443c2f
commit 17fefa3ac3
2 changed files with 82 additions and 48 deletions
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65
include/llvm/Analysis/DSGraph.h
View File

@ -15,16 +15,25 @@
struct DSGraph {
// Public data-type declarations...
typedef hash_map<Value*, DSNodeHandle> ScalarMapTy;
typedef hash_map<Function*, DSNodeHandle> ReturnNodesTy;
/// NodeMapTy - This data type is used when cloning one graph into another to
/// keep track of the correspondence between the nodes in the old and new
/// graphs.
typedef hash_map<const DSNode*, DSNodeHandle> NodeMapTy;
private:
Function *Func; // Func - The LLVM function this graph corresponds to
DSGraph *GlobalsGraph; // Pointer to the common graph of global objects
bool PrintAuxCalls; // Should this graph print the Aux calls vector?
DSNodeHandle RetNode; // The node that gets returned...
std::vector<DSNode*> Nodes;
ScalarMapTy ScalarMap;
// ReturnNodes - A return value for every function merged into this graph.
// Each DSGraph may have multiple functions merged into it at any time, which
// is used for representing SCCs.
//
ReturnNodesTy ReturnNodes;
// FunctionCalls - This vector maintains a single entry for each call
// instruction in the current graph. The first entry in the vector is the
// scalar that holds the return value for the call, the second is the function
@ -42,7 +51,7 @@ private:
void operator=(const DSGraph &); // DO NOT IMPLEMENT
public:
// Create a new, empty, DSGraph.
DSGraph() : Func(0), GlobalsGraph(0), PrintAuxCalls(false) {}
DSGraph() : GlobalsGraph(0), PrintAuxCalls(false) {}
DSGraph(Function &F, DSGraph *GlobalsGraph); // Compute the local DSGraph
// Copy ctor - If you want to capture the node mapping between the source and
@ -54,15 +63,9 @@ public:
// method.
//
DSGraph(const DSGraph &DSG);
DSGraph(const DSGraph &DSG, hash_map<const DSNode*, DSNodeHandle> &NodeMap);
DSGraph(const DSGraph &DSG, NodeMapTy &NodeMap);
~DSGraph();
bool hasFunction() const { return Func != 0; }
Function &getFunction() const {
assert(hasFunction() && "Cannot call getFunction on graph without a fn!");
return *Func;
}
DSGraph *getGlobalsGraph() const { return GlobalsGraph; }
void setGlobalsGraph(DSGraph *G) { GlobalsGraph = G; }
@ -116,14 +119,27 @@ public:
return I->second;
}
const DSNodeHandle &getRetNode() const { return RetNode; }
DSNodeHandle &getRetNode() { return RetNode; }
/// getReturnNodes - Return the mapping of functions to their return nodes for
/// this graph.
const ReturnNodesTy &getReturnNodes() const { return ReturnNodes; }
ReturnNodesTy &getReturnNodes() { return ReturnNodes; }
/// getReturnNodeFor - Return the return node for the specified function.
///
DSNodeHandle &getReturnNodeFor(Function &F) {
ReturnNodesTy::iterator I = ReturnNodes.find(&F);
assert(I != ReturnNodes.end() && "F not in this DSGraph!");
return I->second;
}
/// getGraphSize - Return the number of nodes in this graph.
///
unsigned getGraphSize() const {
return Nodes.size();
}
/// print - Print a dot graph to the specified ostream...
///
void print(std::ostream &O) const;
/// dump - call print(std::cerr), for use from the debugger...
@ -170,8 +186,8 @@ public:
};
void removeDeadNodes(unsigned Flags);
// CloneFlags enum - Bits that may be passed into the cloneInto method to
// specify how to clone the function graph.
/// CloneFlags enum - Bits that may be passed into the cloneInto method to
/// specify how to clone the function graph.
enum CloneFlags {
StripAllocaBit = 1 << 0, KeepAllocaBit = 0 << 0,
DontCloneCallNodes = 1 << 1, CloneCallNodes = 0 << 0,
@ -179,15 +195,15 @@ public:
StripModRefBits = 1 << 3, KeepModRefBits = 0 << 0,
};
// cloneInto - Clone the specified DSGraph into the current graph, returning
// the Return node of the graph. The translated ScalarMap for the old
// function is filled into the OldValMap member. If StripAllocas is set to
// 'StripAllocaBit', Alloca markers are removed from the graph as the graph is
// being cloned.
//
DSNodeHandle cloneInto(const DSGraph &G, ScalarMapTy &OldValMap,
hash_map<const DSNode*, DSNodeHandle> &OldNodeMap,
unsigned CloneFlags = 0);
/// cloneInto - Clone the specified DSGraph into the current graph. The
/// translated ScalarMap for the old function is filled into the OldValMap
/// member, and the translated ReturnNodes map is returned into ReturnNodes.
///
/// The CloneFlags member controls various aspects of the cloning process.
///
void cloneInto(const DSGraph &G, ScalarMapTy &OldValMap,
ReturnNodesTy &OldReturnNodes, NodeMapTy &OldNodeMap,
unsigned CloneFlags = 0);
/// mergeInGraph - The method is used for merging graphs together. If the
/// argument graph is not *this, it makes a clone of the specified graph, then
@ -195,7 +211,8 @@ public:
/// the graph. If the StripAlloca's argument is 'StripAllocaBit' then Alloca
/// markers are removed from nodes.
///
void mergeInGraph(DSCallSite &CS, const DSGraph &Graph, unsigned CloneFlags);
void mergeInGraph(DSCallSite &CS, Function &F, const DSGraph &Graph,
unsigned CloneFlags);
// Methods for checking to make sure graphs are well formed...
void AssertNodeInGraph(const DSNode *N) const {

65
include/llvm/Analysis/DataStructure/DSGraph.h
View File

@ -15,16 +15,25 @@
struct DSGraph {
// Public data-type declarations...
typedef hash_map<Value*, DSNodeHandle> ScalarMapTy;
typedef hash_map<Function*, DSNodeHandle> ReturnNodesTy;
/// NodeMapTy - This data type is used when cloning one graph into another to
/// keep track of the correspondence between the nodes in the old and new
/// graphs.
typedef hash_map<const DSNode*, DSNodeHandle> NodeMapTy;
private:
Function *Func; // Func - The LLVM function this graph corresponds to
DSGraph *GlobalsGraph; // Pointer to the common graph of global objects
bool PrintAuxCalls; // Should this graph print the Aux calls vector?
DSNodeHandle RetNode; // The node that gets returned...
std::vector<DSNode*> Nodes;
ScalarMapTy ScalarMap;
// ReturnNodes - A return value for every function merged into this graph.
// Each DSGraph may have multiple functions merged into it at any time, which
// is used for representing SCCs.
//
ReturnNodesTy ReturnNodes;
// FunctionCalls - This vector maintains a single entry for each call
// instruction in the current graph. The first entry in the vector is the
// scalar that holds the return value for the call, the second is the function
@ -42,7 +51,7 @@ private:
void operator=(const DSGraph &); // DO NOT IMPLEMENT
public:
// Create a new, empty, DSGraph.
DSGraph() : Func(0), GlobalsGraph(0), PrintAuxCalls(false) {}
DSGraph() : GlobalsGraph(0), PrintAuxCalls(false) {}
DSGraph(Function &F, DSGraph *GlobalsGraph); // Compute the local DSGraph
// Copy ctor - If you want to capture the node mapping between the source and
@ -54,15 +63,9 @@ public:
// method.
//
DSGraph(const DSGraph &DSG);
DSGraph(const DSGraph &DSG, hash_map<const DSNode*, DSNodeHandle> &NodeMap);
DSGraph(const DSGraph &DSG, NodeMapTy &NodeMap);
~DSGraph();
bool hasFunction() const { return Func != 0; }
Function &getFunction() const {
assert(hasFunction() && "Cannot call getFunction on graph without a fn!");
return *Func;
}
DSGraph *getGlobalsGraph() const { return GlobalsGraph; }
void setGlobalsGraph(DSGraph *G) { GlobalsGraph = G; }
@ -116,14 +119,27 @@ public:
return I->second;
}
const DSNodeHandle &getRetNode() const { return RetNode; }
DSNodeHandle &getRetNode() { return RetNode; }
/// getReturnNodes - Return the mapping of functions to their return nodes for
/// this graph.
const ReturnNodesTy &getReturnNodes() const { return ReturnNodes; }
ReturnNodesTy &getReturnNodes() { return ReturnNodes; }
/// getReturnNodeFor - Return the return node for the specified function.
///
DSNodeHandle &getReturnNodeFor(Function &F) {
ReturnNodesTy::iterator I = ReturnNodes.find(&F);
assert(I != ReturnNodes.end() && "F not in this DSGraph!");
return I->second;
}
/// getGraphSize - Return the number of nodes in this graph.
///
unsigned getGraphSize() const {
return Nodes.size();
}
/// print - Print a dot graph to the specified ostream...
///
void print(std::ostream &O) const;
/// dump - call print(std::cerr), for use from the debugger...
@ -170,8 +186,8 @@ public:
};
void removeDeadNodes(unsigned Flags);
// CloneFlags enum - Bits that may be passed into the cloneInto method to
// specify how to clone the function graph.
/// CloneFlags enum - Bits that may be passed into the cloneInto method to
/// specify how to clone the function graph.
enum CloneFlags {
StripAllocaBit = 1 << 0, KeepAllocaBit = 0 << 0,
DontCloneCallNodes = 1 << 1, CloneCallNodes = 0 << 0,
@ -179,15 +195,15 @@ public:
StripModRefBits = 1 << 3, KeepModRefBits = 0 << 0,
};
// cloneInto - Clone the specified DSGraph into the current graph, returning
// the Return node of the graph. The translated ScalarMap for the old
// function is filled into the OldValMap member. If StripAllocas is set to
// 'StripAllocaBit', Alloca markers are removed from the graph as the graph is
// being cloned.
//
DSNodeHandle cloneInto(const DSGraph &G, ScalarMapTy &OldValMap,
hash_map<const DSNode*, DSNodeHandle> &OldNodeMap,
unsigned CloneFlags = 0);
/// cloneInto - Clone the specified DSGraph into the current graph. The
/// translated ScalarMap for the old function is filled into the OldValMap
/// member, and the translated ReturnNodes map is returned into ReturnNodes.
///
/// The CloneFlags member controls various aspects of the cloning process.
///
void cloneInto(const DSGraph &G, ScalarMapTy &OldValMap,
ReturnNodesTy &OldReturnNodes, NodeMapTy &OldNodeMap,
unsigned CloneFlags = 0);
/// mergeInGraph - The method is used for merging graphs together. If the
/// argument graph is not *this, it makes a clone of the specified graph, then
@ -195,7 +211,8 @@ public:
/// the graph. If the StripAlloca's argument is 'StripAllocaBit' then Alloca
/// markers are removed from nodes.
///
void mergeInGraph(DSCallSite &CS, const DSGraph &Graph, unsigned CloneFlags);
void mergeInGraph(DSCallSite &CS, Function &F, const DSGraph &Graph,
unsigned CloneFlags);
// Methods for checking to make sure graphs are well formed...
void AssertNodeInGraph(const DSNode *N) const {