#ifndef LLVM_PASS_H
#define LLVM_PASS_H
+#include "llvm/Module.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Streams.h"
-#include <vector>
-#include <map>
-#include <iosfwd>
#include <cassert>
+#include <iosfwd>
+#include <utility>
+#include <vector>
namespace llvm {
-class Value;
class BasicBlock;
class Function;
class Module;
class PMStack;
class AnalysisResolver;
class PMDataManager;
+class LLVMContext;
// AnalysisID - Use the PassInfo to identify a pass...
typedef const PassInfo* AnalysisID;
AnalysisResolver *Resolver; // Used to resolve analysis
intptr_t PassID;
- // AnalysisImpls - This keeps track of which passes implement the interfaces
- // that are required by the current pass (to implement getAnalysis()).
- //
- std::vector<std::pair<const PassInfo*, Pass*> > AnalysisImpls;
-
void operator=(const Pass&); // DO NOT IMPLEMENT
Pass(const Pass &); // DO NOT IMPLEMENT
+
+protected:
+ LLVMContext *Context;
+
public:
- explicit Pass(intptr_t pid) : Resolver(0), PassID(pid) {}
- explicit Pass(const void *pid) : Resolver(0), PassID((intptr_t)pid) {}
+ explicit Pass(intptr_t pid) : Resolver(0), PassID(pid) {
+ assert(pid && "pid cannot be 0");
+ }
+ explicit Pass(const void *pid) : Resolver(0), PassID((intptr_t)pid) {
+ assert(pid && "pid cannot be 0");
+ }
virtual ~Pass();
/// getPassName - Return a nice clean name for a pass. This usually
/// Each pass is responsible for assigning a pass manager to itself.
/// PMS is the stack of available pass manager.
- virtual void assignPassManager(PMStack &PMS,
- PassManagerType T = PMT_Unknown) {}
+ virtual void assignPassManager(PMStack &,
+ PassManagerType = PMT_Unknown) {}
/// Check if available pass managers are suitable for this pass or not.
- virtual void preparePassManager(PMStack &PMS) {}
+ virtual void preparePassManager(PMStack &) {}
/// Return what kind of Pass Manager can manage this pass.
virtual PassManagerType getPotentialPassManagerType() const {
Resolver = AR;
}
inline AnalysisResolver *getResolver() {
- assert (Resolver && "Resolver is not set");
return Resolver;
}
- /// isAnalysis - Return true if this pass is implementing an analysis pass.
- virtual bool isAnalysis() const {
- return false;
- }
-
/// getAnalysisUsage - This function should be overriden by passes that need
/// analysis information to do their job. If a pass specifies that it uses a
/// particular analysis result to this function, it can then use the
/// getAnalysis<AnalysisType>() function, below.
///
- virtual void getAnalysisUsage(AnalysisUsage &Info) const {
+ virtual void getAnalysisUsage(AnalysisUsage &) const {
// By default, no analysis results are used, all are invalidated.
}
// or null if it is not known.
static const PassInfo *lookupPassInfo(intptr_t TI);
- /// 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
- /// analysis results haven't been computed), so should only be used if you
- /// provide the capability to update an analysis that exists. This method is
- /// often used by transformation APIs to update analysis results for a pass
- /// automatically as the transform is performed.
+ /// getAnalysisIfAvailable<AnalysisType>() - Subclasses use this function to
+ /// get analysis information that might be around, for example to update it.
+ /// This is different than getAnalysis in that it can fail (if the analysis
+ /// results haven't been computed), so should only be used if you can handle
+ /// the case when the analysis is not available. This method is often used by
+ /// transformation APIs to update analysis results for a pass automatically as
+ /// the transform is performed.
///
- template<typename AnalysisType>
- AnalysisType *getAnalysisToUpdate() const; // Defined in PassAnalysisSupport.h
+ template<typename AnalysisType> AnalysisType *
+ getAnalysisIfAvailable() const; // Defined in PassAnalysisSupport.h
/// mustPreserveAnalysisID - This method serves the same function as
- /// getAnalysisToUpdate, but works if you just have an AnalysisID. This
+ /// getAnalysisIfAvailable, but works if you just have an AnalysisID. This
/// obviously cannot give you a properly typed instance of the class if you
- /// don't have the class name available (use getAnalysisToUpdate if you do),
- /// but it can tell you if you need to preserve the pass at least.
+ /// don't have the class name available (use getAnalysisIfAvailable if you
+ /// do), but it can tell you if you need to preserve the pass at least.
///
bool mustPreserveAnalysisID(const PassInfo *AnalysisID) const;
/// ImmutablePasses are never run.
///
- bool runOnModule(Module &M) { return false; }
+ bool runOnModule(Module &) { return false; }
explicit ImmutablePass(intptr_t pid) : ModulePass(pid) {}
- explicit ImmutablePass(const void *pid) : ModulePass(pid) {}
+ explicit ImmutablePass(const void *pid)
+ : ModulePass(pid) {}
// Force out-of-line virtual method.
virtual ~ImmutablePass();
/// doInitialization - Virtual method overridden by subclasses to do
/// any necessary per-module initialization.
///
- virtual bool doInitialization(Module &M) { return false; }
+ virtual bool doInitialization(Module &M) {
+ Context = &M.getContext();
+ return false;
+ }
/// runOnFunction - Virtual method overriden by subclasses to do the
/// per-function processing of the pass.
/// doFinalization - Virtual method overriden by subclasses to do any post
/// processing needed after all passes have run.
///
- virtual bool doFinalization(Module &M) { return false; }
+ virtual bool doFinalization(Module &) { return false; }
/// runOnModule - On a module, we run this pass by initializing,
/// ronOnFunction'ing once for every function in the module, then by
/// doInitialization - Virtual method overridden by subclasses to do
/// any necessary per-module initialization.
///
- virtual bool doInitialization(Module &M) { return false; }
+ virtual bool doInitialization(Module &M) {
+ Context = &M.getContext();
+ return false;
+ }
/// doInitialization - Virtual method overridden by BasicBlockPass subclasses
/// to do any necessary per-function initialization.
///
- virtual bool doInitialization(Function &F) { return false; }
+ virtual bool doInitialization(Function &) { return false; }
/// runOnBasicBlock - Virtual method overriden by subclasses to do the
/// per-basicblock processing of the pass.
/// doFinalization - Virtual method overriden by BasicBlockPass subclasses to
/// do any post processing needed after all passes have run.
///
- virtual bool doFinalization(Function &F) { return false; }
+ virtual bool doFinalization(Function &) { return false; }
/// doFinalization - Virtual method overriden by subclasses to do any post
/// processing needed after all passes have run.
///
- virtual bool doFinalization(Module &M) { return false; }
+ virtual bool doFinalization(Module &) { return false; }
// To run this pass on a function, we simply call runOnBasicBlock once for
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