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* Simplify a lot of the inlining stuff.  There are still problems, but not
  many
* Break up the Function representation to have a vector for every different
  node type so it is fast to find nodes of a particular flavor.
* Do more intelligent merging of call values
* Allow elimination of unreachable shadow and allocation nodes
* Generalize indistinguishability testing to allow merging of identical calls.
* Increase shadow node merging power


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2010 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-03-28 17:56:03 +00:00
parent 1d8ec6194a
commit 1120c8b34a
6 changed files with 389 additions and 320 deletions
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19
lib/Analysis/DataStructure/FunctionRepBuilder.cpp
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@ -44,7 +44,7 @@ void InitVisitor::visitOperand(Value *V) {
if (!Rep->ValueMap.count(V)) // Only process it once...
if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
GlobalDSNode *N = new GlobalDSNode(GV);
Rep->Nodes.push_back(N);
Rep->GlobalNodes.push_back(N);
Rep->ValueMap[V].add(N);
Rep->addAllUsesToWorkList(GV);
@ -60,7 +60,7 @@ void InitVisitor::visitOperand(Value *V) {
//
void InitVisitor::visitCallInst(CallInst *CI) {
CallDSNode *C = new CallDSNode(CI);
Rep->Nodes.push_back(C);
Rep->CallNodes.push_back(C);
Rep->CallMap[CI] = C;
if (isa<PointerType>(CI->getType())) {
@ -95,8 +95,8 @@ void InitVisitor::visitCallInst(CallInst *CI) {
// global vars...
//
void InitVisitor::visitAllocationInst(AllocationInst *AI) {
NewDSNode *N = new NewDSNode(AI);
Rep->Nodes.push_back(N);
AllocDSNode *N = new AllocDSNode(AI);
Rep->AllocNodes.push_back(N);
Rep->ValueMap[AI].add(N, AI);
@ -144,7 +144,7 @@ void FunctionRepBuilder::initializeWorkList(Function *Func) {
// Only process arguments that are of pointer type...
if (isa<PointerType>((*I)->getType())) {
ArgDSNode *Arg = new ArgDSNode(*I);
Nodes.push_back(Arg);
ArgNodes.push_back(Arg);
// Add a critical shadow value for it to represent what it is pointing
// to and add this to the value map...
@ -326,10 +326,13 @@ void FunctionRepBuilder::visitPHINode(PHINode *PN) {
//
FunctionDSGraph::FunctionDSGraph(Function *F) : Func(F) {
FunctionRepBuilder Builder(this);
Nodes = Builder.getNodes();
ArgNodes = Builder.getArgNodes();
AllocNodes = Builder.getAllocNodes();
ShadowNodes = Builder.getShadowNodes();
RetNode = Builder.getRetNode();
ValueMap = Builder.getValueMap();
GlobalNodes = Builder.getGlobalNodes();
CallNodes = Builder.getCallNodes();
RetNode = Builder.getRetNode();
ValueMap = Builder.getValueMap();
bool Changed = true;
while (Changed) {