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RequiredAnalysis support is buggy and not used at the moment so remove

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the code. Add TODO note.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32313 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2006-12-07 18:47:25 +00:00
parent cbfd29d0da
commit 4045af1175
1 changed files with 10 additions and 41 deletions
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51
lib/VMCore/PassManager.cpp
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@ -107,9 +107,6 @@ public:
return I->second;
}
/// Augment RequiredAnalysis by adding analysis required by pass P.
void noteDownRequiredAnalysis(Pass *P);
/// Augment AvailableAnalysis by adding analysis made available by pass P.
void noteDownAvailableAnalysis(Pass *P);
@ -119,13 +116,12 @@ public:
/// Remove dead passes
void removeDeadPasses(Pass *P);
/// Add pass P into the PassVector. Update RequiredAnalysis and
/// Add pass P into the PassVector. Update
/// AvailableAnalysis appropriately if ProcessAnalysis is true.
void addPassToManager (Pass *P, bool ProcessAnalysis = true);
// Initialize available analysis information.
void initializeAnalysisInfo() {
RequiredAnalysis.clear();
AvailableAnalysis.clear();
LastUser.clear();
}
@ -151,12 +147,6 @@ public:
}
private:
// Analysis required by the passes managed by this manager. This information
// used while selecting pass manager during addPass. If a pass does not
// preserve any analysis required by other passes managed by current
// pass manager then new pass manager is used.
std::vector<AnalysisID> RequiredAnalysis;
// Set of available Analysis. This information is used while scheduling
// pass. If a pass requires an analysis which is not not available then
// equired analysis pass is scheduled to run before the pass itself is
@ -307,37 +297,16 @@ private:
/// manager.
bool PMDataManager::manageablePass(Pass *P) {
AnalysisUsage AnUsage;
P->getAnalysisUsage(AnUsage);
// If this pass is not preserving information that is required by the other
// passes managed by this manager then use new manager
if (!AnUsage.getPreservesAll()) {
const std::vector<AnalysisID> &PreservedSet = AnUsage.getPreservedSet();
for (std::vector<AnalysisID>::iterator I = RequiredAnalysis.begin(),
E = RequiredAnalysis.end(); I != E; ++I) {
if (std::find(PreservedSet.begin(), PreservedSet.end(), *I) ==
PreservedSet.end())
// This analysis is not preserved. Need new manager.
return false;
}
}
// TODO
// If this pass is not preserving information that is required by a
// pass maintained by higher level pass manager then do not insert
// this pass into current manager. Use new manager. For example,
// For example, If FunctionPass F is not preserving ModulePass Info M1
// that is used by another ModulePass M2 then do not insert F in
// current function pass manager.
return true;
}
/// Augment RequiredAnalysis by adding analysis required by pass P.
void PMDataManager::noteDownRequiredAnalysis(Pass *P) {
AnalysisUsage AnUsage;
P->getAnalysisUsage(AnUsage);
const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet();
// FIXME: What about duplicates ?
RequiredAnalysis.insert(RequiredAnalysis.end(), RequiredSet.begin(),
RequiredSet.end());
initializeAnalysisImpl(P);
}
/// Augement AvailableAnalysis by adding analysis made available by pass P.
void PMDataManager::noteDownAvailableAnalysis(Pass *P) {
@ -389,14 +358,14 @@ void PMDataManager::removeDeadPasses(Pass *P) {
}
}
/// Add pass P into the PassVector. Update RequiredAnalysis and
/// Add pass P into the PassVector. Update
/// AvailableAnalysis appropriately if ProcessAnalysis is true.
void PMDataManager::addPassToManager (Pass *P,
bool ProcessAnalysis) {
if (ProcessAnalysis) {
// Take a note of analysis required and made available by this pass
noteDownRequiredAnalysis(P);
initializeAnalysisImpl(P);
noteDownAvailableAnalysis(P);
// Remove the analysis not preserved by this pass