//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_PASS_ANALYSIS_SUPPORT_H
-#define LLVM_PASS_ANALYSIS_SUPPORT_H
+#ifndef LLVM_PASSANALYSISSUPPORT_H
+#define LLVM_PASSANALYSISSUPPORT_H
-#include <vector>
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Pass.h"
+#include <vector>
namespace llvm {
-// No need to include Pass.h, we are being included by it!
-
//===----------------------------------------------------------------------===//
// AnalysisUsage - Represent the analysis usage information of a pass. This
// tracks analyses that the pass REQUIRES (must be available when the pass
// addRequired - Add the specified ID to the required set of the usage info
// for a pass.
//
- AnalysisUsage &addRequiredID(AnalysisID ID) {
- assert(ID && "Pass class not registered!");
- Required.push_back(ID);
- return *this;
- }
+ AnalysisUsage &addRequiredID(const void *ID);
+ AnalysisUsage &addRequiredID(char &ID);
template<class PassClass>
AnalysisUsage &addRequired() {
- return addRequiredID(Pass::getClassPassInfo<PassClass>());
+ return addRequiredID(PassClass::ID);
}
- AnalysisUsage &addRequiredTransitiveID(AnalysisID ID) {
- assert(ID && "Pass class not registered!");
- Required.push_back(ID);
- RequiredTransitive.push_back(ID);
- return *this;
- }
+ AnalysisUsage &addRequiredTransitiveID(char &ID);
template<class PassClass>
AnalysisUsage &addRequiredTransitive() {
- AnalysisID ID = Pass::getClassPassInfo<PassClass>();
- return addRequiredTransitiveID(ID);
+ return addRequiredTransitiveID(PassClass::ID);
}
// addPreserved - Add the specified ID to the set of analyses preserved by
// this pass
//
- AnalysisUsage &addPreservedID(AnalysisID ID) {
+ AnalysisUsage &addPreservedID(const void *ID) {
Preserved.push_back(ID);
return *this;
}
+ AnalysisUsage &addPreservedID(char &ID) {
+ Preserved.push_back(&ID);
+ return *this;
+ }
+ // addPreserved - Add the specified Pass class to the set of analyses
+ // preserved by this pass.
+ //
template<class PassClass>
AnalysisUsage &addPreserved() {
- assert(Pass::getClassPassInfo<PassClass>() && "Pass class not registered!");
- Preserved.push_back(Pass::getClassPassInfo<PassClass>());
+ Preserved.push_back(&PassClass::ID);
return *this;
}
+ // addPreserved - Add the Pass with the specified argument string to the set
+ // of analyses preserved by this pass. If no such Pass exists, do nothing.
+ // This can be useful when a pass is trivially preserved, but may not be
+ // linked in. Be careful about spelling!
+ //
+ AnalysisUsage &addPreserved(StringRef Arg);
+
// setPreservesAll - Set by analyses that do not transform their input at all
void setPreservesAll() { PreservesAll = true; }
bool getPreservesAll() const { return PreservesAll; }
class PMDataManager;
class AnalysisResolver {
private:
- AnalysisResolver(); // DO NOT IMPLEMENT
+ AnalysisResolver() LLVM_DELETED_FUNCTION;
public:
explicit AnalysisResolver(PMDataManager &P) : PM(P) { }
inline PMDataManager &getPMDataManager() { return PM; }
// Find pass that is implementing PI.
- Pass *findImplPass(const PassInfo *PI) {
- Pass *ResultPass = 0;
+ Pass *findImplPass(AnalysisID PI) {
+ Pass *ResultPass = nullptr;
for (unsigned i = 0; i < AnalysisImpls.size() ; ++i) {
if (AnalysisImpls[i].first == PI) {
ResultPass = AnalysisImpls[i].second;
}
// Find pass that is implementing PI. Initialize pass for Function F.
- Pass *findImplPass(Pass *P, const PassInfo *PI, Function &F);
+ Pass *findImplPass(Pass *P, AnalysisID PI, Function &F);
- void addAnalysisImplsPair(const PassInfo *PI, Pass *P) {
- std::pair<const PassInfo*, Pass*> pir = std::make_pair(PI,P);
+ void addAnalysisImplsPair(AnalysisID PI, Pass *P) {
+ if (findImplPass(PI) == P)
+ return;
+ std::pair<AnalysisID, Pass*> pir = std::make_pair(PI,P);
AnalysisImpls.push_back(pir);
}
+ /// clearAnalysisImpls - Clear cache that is used to connect a pass to the
+ /// the analysis (PassInfo).
+ void clearAnalysisImpls() {
+ AnalysisImpls.clear();
+ }
+
// getAnalysisIfAvailable - Return analysis result or null if it doesn't exist
Pass *getAnalysisIfAvailable(AnalysisID ID, bool Direction) const;
+private:
// AnalysisImpls - This keeps track of which passes implements the interfaces
// that are required by the current pass (to implement getAnalysis()).
- // NOTE : Remove AnalysisImpls from class Pass, when AnalysisResolver
- // replaces AnalysisResolver
- std::vector<std::pair<const PassInfo*, Pass*> > AnalysisImpls;
+ std::vector<std::pair<AnalysisID, Pass*> > AnalysisImpls;
-private:
// PassManager that is used to resolve analysis info
PMDataManager &PM;
};
AnalysisType *Pass::getAnalysisIfAvailable() const {
assert(Resolver && "Pass not resident in a PassManager object!");
- const PassInfo *PI = getClassPassInfo<AnalysisType>();
- if (PI == 0) return 0;
- return dynamic_cast<AnalysisType*>
- (Resolver->getAnalysisIfAvailable(PI, true));
+ const void *PI = &AnalysisType::ID;
+
+ Pass *ResultPass = Resolver->getAnalysisIfAvailable(PI, true);
+ if (!ResultPass) return nullptr;
+
+ // Because the AnalysisType may not be a subclass of pass (for
+ // AnalysisGroups), we use getAdjustedAnalysisPointer here to potentially
+ // adjust the return pointer (because the class may multiply inherit, once
+ // from pass, once from AnalysisType).
+ return (AnalysisType*)ResultPass->getAdjustedAnalysisPointer(PI);
}
/// getAnalysis<AnalysisType>() - This function is used by subclasses to get
///
template<typename AnalysisType>
AnalysisType &Pass::getAnalysis() const {
- assert(Resolver &&"Pass has not been inserted into a PassManager object!");
-
- return getAnalysisID<AnalysisType>(getClassPassInfo<AnalysisType>());
+ assert(Resolver && "Pass has not been inserted into a PassManager object!");
+ return getAnalysisID<AnalysisType>(&AnalysisType::ID);
}
template<typename AnalysisType>
-AnalysisType &Pass::getAnalysisID(const PassInfo *PI) const {
+AnalysisType &Pass::getAnalysisID(AnalysisID PI) const {
assert(PI && "getAnalysis for unregistered pass!");
assert(Resolver&&"Pass has not been inserted into a PassManager object!");
// PI *must* appear in AnalysisImpls. Because the number of passes used
"'required' by pass!");
// Because the AnalysisType may not be a subclass of pass (for
- // AnalysisGroups), we must use dynamic_cast here to potentially adjust the
- // return pointer (because the class may multiply inherit, once from pass,
- // once from AnalysisType).
- //
- AnalysisType *Result = dynamic_cast<AnalysisType*>(ResultPass);
- assert(Result && "Pass does not implement interface required!");
- return *Result;
+ // AnalysisGroups), we use getAdjustedAnalysisPointer here to potentially
+ // adjust the return pointer (because the class may multiply inherit, once
+ // from pass, once from AnalysisType).
+ return *(AnalysisType*)ResultPass->getAdjustedAnalysisPointer(PI);
}
/// getAnalysis<AnalysisType>() - This function is used by subclasses to get
AnalysisType &Pass::getAnalysis(Function &F) {
assert(Resolver &&"Pass has not been inserted into a PassManager object!");
- return getAnalysisID<AnalysisType>(getClassPassInfo<AnalysisType>(), F);
+ return getAnalysisID<AnalysisType>(&AnalysisType::ID, F);
}
template<typename AnalysisType>
-AnalysisType &Pass::getAnalysisID(const PassInfo *PI, Function &F) {
+AnalysisType &Pass::getAnalysisID(AnalysisID PI, Function &F) {
assert(PI && "getAnalysis for unregistered pass!");
- assert(Resolver&&"Pass has not been inserted into a PassManager object!");
- // PI *must* appear in AnalysisImpls. Because the number of passes used
- // should be a small number, we just do a linear search over a (dense)
- // vector.
- Pass *ResultPass = Resolver->findImplPass(this, PI, F);
- assert (ResultPass &&
- "getAnalysis*() called on an analysis that was not "
- "'required' by pass!");
-
- // Because the AnalysisType may not be a subclass of pass (for
- // AnalysisGroups), we must use dynamic_cast here to potentially adjust the
- // return pointer (because the class may multiply inherit, once from pass,
- // once from AnalysisType).
- //
- AnalysisType *Result = dynamic_cast<AnalysisType*>(ResultPass);
- assert(Result && "Pass does not implement interface required!");
- return *Result;
+ assert(Resolver && "Pass has not been inserted into a PassManager object!");
+ // PI *must* appear in AnalysisImpls. Because the number of passes used
+ // should be a small number, we just do a linear search over a (dense)
+ // vector.
+ Pass *ResultPass = Resolver->findImplPass(this, PI, F);
+ assert(ResultPass && "Unable to find requested analysis info");
+
+ // Because the AnalysisType may not be a subclass of pass (for
+ // AnalysisGroups), we use getAdjustedAnalysisPointer here to potentially
+ // adjust the return pointer (because the class may multiply inherit, once
+ // from pass, once from AnalysisType).
+ return *(AnalysisType*)ResultPass->getAdjustedAnalysisPointer(PI);
}
} // End llvm namespace
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