//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#define LLVM_PASS_ANALYSIS_SUPPORT_H
#include <vector>
+#include "llvm/ADT/SmallVector.h"
namespace llvm {
// Pass infrastructure through the getAnalysisUsage virtual function.
//
class AnalysisUsage {
+public:
+ typedef SmallVector<AnalysisID, 32> VectorType;
+
+private:
// Sets of analyses required and preserved by a pass
- std::vector<AnalysisID> Required, RequiredTransitive, Preserved;
+ VectorType Required, RequiredTransitive, Preserved;
bool PreservesAll;
+
public:
AnalysisUsage() : PreservesAll(false) {}
// for a pass.
//
AnalysisUsage &addRequiredID(AnalysisID ID) {
+ assert(ID && "Pass class not registered!");
Required.push_back(ID);
return *this;
}
template<class PassClass>
AnalysisUsage &addRequired() {
- assert(Pass::getClassPassInfo<PassClass>() && "Pass class not registered!");
- Required.push_back(Pass::getClassPassInfo<PassClass>());
- return *this;
+ return addRequiredID(Pass::getClassPassInfo<PassClass>());
}
- template<class PassClass>
- AnalysisUsage &addRequiredTransitive() {
- AnalysisID ID = Pass::getClassPassInfo<PassClass>();
+ AnalysisUsage &addRequiredTransitiveID(AnalysisID ID) {
assert(ID && "Pass class not registered!");
Required.push_back(ID);
RequiredTransitive.push_back(ID);
return *this;
}
+ template<class PassClass>
+ AnalysisUsage &addRequiredTransitive() {
+ AnalysisID ID = Pass::getClassPassInfo<PassClass>();
+ return addRequiredTransitiveID(ID);
+ }
// addPreserved - Add the specified ID to the set of analyses preserved by
// this pass
///
void setPreservesCFG();
- const std::vector<AnalysisID> &getRequiredSet() const { return Required; }
- const std::vector<AnalysisID> &getRequiredTransitiveSet() const {
+ const VectorType &getRequiredSet() const { return Required; }
+ const VectorType &getRequiredTransitiveSet() const {
return RequiredTransitive;
}
- const std::vector<AnalysisID> &getPreservedSet() const { return Preserved; }
+ const VectorType &getPreservedSet() const { return Preserved; }
};
//===----------------------------------------------------------------------===//
// the pass.
//
class PMDataManager;
-class AnalysisResolver_New {
+class AnalysisResolver {
private:
- AnalysisResolver_New(); // DO NOT IMPLEMENT
+ AnalysisResolver(); // DO NOT IMPLEMENT
public:
- AnalysisResolver_New(PMDataManager &P) : PM(P) { }
+ explicit AnalysisResolver(PMDataManager &P) : PM(P) { }
inline PMDataManager &getPMDataManager() { return PM; }
return ResultPass;
}
+ // Find pass that is implementing PI. Initialize pass for Function F.
+ Pass *findImplPass(Pass *P, const PassInfo *PI, Function &F);
+
void addAnalysisImplsPair(const PassInfo *PI, Pass *P) {
std::pair<const PassInfo*, Pass*> pir = std::make_pair(PI,P);
AnalysisImpls.push_back(pir);
// 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_New
+ // NOTE : Remove AnalysisImpls from class Pass, when AnalysisResolver
// replaces AnalysisResolver
std::vector<std::pair<const PassInfo*, Pass*> > AnalysisImpls;
PMDataManager &PM;
};
-//===----------------------------------------------------------------------===//
-// AnalysisResolver - Simple interface implemented by PassManager objects that
-// is used to pull analysis information out of them.
-//
-struct AnalysisResolver {
- virtual ~AnalysisResolver();
- virtual Pass *getAnalysisOrNullUp(AnalysisID ID) const = 0;
- virtual Pass *getAnalysisOrNullDown(AnalysisID ID) const = 0;
- virtual void addPass(ImmutablePass *IP, AnalysisUsage &AU) = 0;
- Pass *getAnalysis(AnalysisID ID) const {
- Pass *Result = getAnalysisOrNullUp(ID);
- assert(Result && "Pass has an incorrect analysis uses set!");
- return Result;
- }
-
- // getAnalysisToUpdate - Return an analysis result or null if it doesn't exist
- Pass *getAnalysisToUpdate(AnalysisID ID) const {
- return getAnalysisOrNullUp(ID);
- }
-
- // Methods for introspecting into pass manager objects...
- virtual unsigned getDepth() const = 0;
- virtual unsigned getNumContainedPasses() const = 0;
- virtual const Pass *getContainedPass(unsigned N) const = 0;
-
- virtual void markPassUsed(AnalysisID P, Pass *User) = 0;
-
- void startPass(Pass *P) {}
- void endPass(Pass *P) {}
-protected:
- void setAnalysisResolver(Pass *P, AnalysisResolver *AR);
-};
-
/// getAnalysisToUpdate<AnalysisType>() - This function is used by subclasses
/// to get to the analysis information that might be around that needs to be
/// updated. This is different than getAnalysis in that it can fail (ie the
template<typename AnalysisType>
AnalysisType *Pass::getAnalysisToUpdate() 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->getAnalysisToUpdate(PI));
+ return dynamic_cast<AnalysisType*>
+ (Resolver->getAnalysisToUpdate(PI, true));
+}
+
+/// getAnalysis<AnalysisType>() - This function is used by subclasses to get
+/// to the analysis information that they claim to use by overriding the
+/// getAnalysisUsage function.
+///
+template<typename AnalysisType>
+AnalysisType &Pass::getAnalysis() const {
+ assert(Resolver &&"Pass has not been inserted into a PassManager object!");
+
+ return getAnalysisID<AnalysisType>(getClassPassInfo<AnalysisType>());
+}
+
+template<typename AnalysisType>
+AnalysisType &Pass::getAnalysisID(const PassInfo *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
+ // should be a small number, we just do a linear search over a (dense)
+ // vector.
+ Pass *ResultPass = Resolver->findImplPass(PI);
+ 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;
+}
+
+/// getAnalysis<AnalysisType>() - This function is used by subclasses to get
+/// to the analysis information that they claim to use by overriding the
+/// getAnalysisUsage function.
+///
+template<typename AnalysisType>
+AnalysisType &Pass::getAnalysis(Function &F) {
+ assert(Resolver &&"Pass has not been inserted into a PassManager object!");
+
+ return getAnalysisID<AnalysisType>(getClassPassInfo<AnalysisType>(), F);
+}
+
+template<typename AnalysisType>
+AnalysisType &Pass::getAnalysisID(const PassInfo *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;
}
} // End llvm namespace
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