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Do not do horrible things to the CBU graphs. In particular, we do NOT own

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the CBU graphs, copy them instead of hacking on the CBU graphs.

Also, instead of forwarding request from ECGraphs clients to the CBU graphs
clients, service them ourselves.

Finally, remove a broken "optimization"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17378 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-10-31 21:56:11 +00:00
parent 3b7b81b814
commit ab8544aa75
2 changed files with 44 additions and 61 deletions
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26
include/llvm/Analysis/DataStructure/EquivClassGraphs.h
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@ -1,4 +1,4 @@
//===-- EquivClassGraphs.h - Merge equiv-class graphs & inline bottom-up --===//
//===-- EquivClassGraphs.h - Merge equiv-class graphs -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
@ -7,14 +7,13 @@
//
//===----------------------------------------------------------------------===//
//
// This pass is the same as the complete bottom-up graphs, but
// with functions partitioned into equivalence classes and a single merged
// DS graph for all functions in an equivalence class. After this merging,
// graphs are inlined bottom-up on the SCCs of the final (CBU) call graph.
// This pass is the same as the complete bottom-up graphs, but with functions
// partitioned into equivalence classes and a single merged DS graph for all
// functions in an equivalence class. After this merging, graphs are inlined
// bottom-up on the SCCs of the final (CBU) call graph.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/DataStructure/DataStructure.h"
#include "llvm/Analysis/DataStructure/DSGraph.h"
#include "llvm/ADT/EquivalenceClasses.h"
@ -49,6 +48,8 @@ namespace PA {
struct EquivClassGraphs : public ModulePass {
CompleteBUDataStructures *CBU;
DSGraph *GlobalsGraph;
// FoldedGraphsMap, one graph for each function
hash_map<const Function*, DSGraph*> FoldedGraphsMap;
@ -69,7 +70,7 @@ namespace PA {
/// EquivClassGraphs - Computes the equivalence classes and then the
/// folded DS graphs for each class.
///
virtual bool runOnModule(Module &M) { computeFoldedGraphs(M); return true; }
virtual bool runOnModule(Module &M);
/// getCBUDataStructures - Get the CompleteBUDataStructures object
///
@ -117,15 +118,8 @@ namespace PA {
return GraphInfo;
}
/// sameAsCBUGraph - Check if the folded graph for this function is
/// the same as the CBU graph.
bool sameAsCBUGraph(const Function &F) const {
DSGraph& foldedGraph = getDSGraph(F);
return (&foldedGraph == &CBU->getDSGraph(F));
}
DSGraph &getGlobalsGraph() const {
return CBU->getGlobalsGraph();
return *GlobalsGraph;
}
typedef llvm::BUDataStructures::ActualCalleesTy ActualCalleesTy;
@ -143,8 +137,6 @@ namespace PA {
void print(std::ostream &O, const Module *M) const { CBU->print(O, M); }
private:
void computeFoldedGraphs(Module &M);
void buildIndirectFunctionSets(Module &M);
unsigned processSCC(DSGraph &FG, Function &F, std::vector<Function*> &Stack,