llvm-6502/lib/VMCore/PassManager.cpp
Devang Patel c63592b19e Split FunctionPassManager_New into FunctionPassManager_New and FunctionPassManagerImpl_New.
FunctionPassManagerImpl_New implements the pass manager.
FunctionPassManager_New is the public interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31547 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-08 10:44:40 +00:00

426 lines
13 KiB
C++

//===- PassManager.cpp - LLVM Pass Infrastructure Implementation ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Devang Patel and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the LLVM Pass Manager infrastructure.
//
//===----------------------------------------------------------------------===//
#include "llvm/PassManager.h"
#include "llvm/Module.h"
using namespace llvm;
namespace llvm {
/// BasicBlockPassManager_New manages BasicBlockPass. It batches all the
/// pass together and sequence them to process one basic block before
/// processing next basic block.
class BasicBlockPassManager_New : public Pass,
public PassManagerAnalysisHelper {
public:
BasicBlockPassManager_New() { }
/// Add a pass into a passmanager queue.
bool addPass(Pass *p);
/// Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the function, and if so, return true.
bool runOnFunction(Function &F);
private:
// Collection of pass that are managed by this manager
std::vector<Pass *> PassVector;
};
/// FunctionPassManagerImpl_New manages FunctionPasses and BasicBlockPassManagers.
/// It batches all function passes and basic block pass managers together and
/// sequence them to process one function at a time before processing next
/// function.
class FunctionPassManagerImpl_New : public Pass,
public PassManagerAnalysisHelper {
public:
FunctionPassManagerImpl_New(ModuleProvider *P) { /* TODO */ }
FunctionPassManagerImpl_New() {
activeBBPassManager = NULL;
}
~FunctionPassManagerImpl_New() { /* TODO */ };
/// add - Add a pass to the queue of passes to run. This passes
/// ownership of the Pass to the PassManager. When the
/// PassManager_X is destroyed, the pass will be destroyed as well, so
/// there is no need to delete the pass. (TODO delete passes.)
/// This implies that all passes MUST be allocated with 'new'.
void add(Pass *P) { /* TODO*/ }
/// Add pass into the pass manager queue.
bool addPass(Pass *P);
/// Execute all of the passes scheduled for execution. Keep
/// track of whether any of the passes modifies the function, and if
/// so, return true.
bool runOnModule(Module &M);
private:
// Collection of pass that are manged by this manager
std::vector<Pass *> PassVector;
// Active Pass Managers
BasicBlockPassManager_New *activeBBPassManager;
};
/// ModulePassManager_New manages ModulePasses and function pass managers.
/// It batches all Module passes passes and function pass managers together and
/// sequence them to process one module.
class ModulePassManager_New : public Pass,
public PassManagerAnalysisHelper {
public:
ModulePassManager_New() { activeFunctionPassManager = NULL; }
/// Add a pass into a passmanager queue.
bool addPass(Pass *p);
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
bool runOnModule(Module &M);
private:
// Collection of pass that are managed by this manager
std::vector<Pass *> PassVector;
// Active Pass Manager
FunctionPassManagerImpl_New *activeFunctionPassManager;
};
/// PassManager_New manages ModulePassManagers
class PassManagerImpl_New : public Pass,
public PassManagerAnalysisHelper {
public:
/// add - Add a pass to the queue of passes to run. This passes ownership of
/// the Pass to the PassManager. When the PassManager is destroyed, the pass
/// will be destroyed as well, so there is no need to delete the pass. This
/// implies that all passes MUST be allocated with 'new'.
void add(Pass *P);
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
bool run(Module &M);
private:
/// Add a pass into a passmanager queue. This is used by schedulePasses
bool addPass(Pass *p);
/// Schedule all passes collected in pass queue using add(). Add all the
/// schedule passes into various manager's queue using addPass().
void schedulePasses();
// Collection of pass managers
std::vector<ModulePassManager_New *> PassManagers;
// Collection of pass that are not yet scheduled
std::vector<Pass *> PassVector;
// Active Pass Manager
ModulePassManager_New *activeManager;
};
} // End of llvm namespace
// PassManagerAnalysisHelper implementation
/// Return true IFF pass P's required analysis set does not required new
/// manager.
bool PassManagerAnalysisHelper::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
// TODO
return true;
}
/// Return true IFF AnalysisID AID is currently available.
bool PassManagerAnalysisHelper::analysisCurrentlyAvailable(AnalysisID AID) {
// TODO
return false;
}
/// Augment RequiredSet by adding analysis required by pass P.
void PassManagerAnalysisHelper::noteDownRequiredAnalysis(Pass *P) {
// TODO
}
/// Remove AnalysisID from the RequiredSet
void PassManagerAnalysisHelper::removeAnalysis(AnalysisID AID) {
// TODO
}
/// Remove Analyss not preserved by Pass P
void PassManagerAnalysisHelper::removeNotPreservedAnalysis(Pass *P) {
// TODO
}
/// BasicBlockPassManager implementation
/// Add pass P into PassVector and return true. If this pass is not
/// manageable by this manager then return false.
bool
BasicBlockPassManager_New::addPass(Pass *P) {
BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
if (!BP)
return false;
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
if (!manageablePass(P))
return false;
// Take a note of analysis required by this pass.
noteDownRequiredAnalysis(P);
// Add pass
PassVector.push_back(BP);
return true;
}
/// Execute all of the passes scheduled for execution by invoking
/// runOnBasicBlock method. Keep track of whether any of the passes modifies
/// the function, and if so, return true.
bool
BasicBlockPassManager_New::runOnFunction(Function &F) {
bool Changed = false;
for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
for (std::vector<Pass *>::iterator itr = PassVector.begin(),
e = PassVector.end(); itr != e; ++itr) {
Pass *P = *itr;
BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
Changed |= BP->runOnBasicBlock(*I);
}
return Changed;
}
// FunctionPassManager_New implementation
/// Create new Function pass manager
FunctionPassManager_New::FunctionPassManager_New() {
FPM = new FunctionPassManagerImpl_New();
}
/// add - Add a pass to the queue of passes to run. This passes
/// ownership of the Pass to the PassManager. When the
/// PassManager_X is destroyed, the pass will be destroyed as well, so
/// there is no need to delete the pass. (TODO delete passes.)
/// This implies that all passes MUST be allocated with 'new'.
void
FunctionPassManager_New::add(Pass *P) {
FPM->add(P);
}
/// Execute all of the passes scheduled for execution. Keep
/// track of whether any of the passes modifies the function, and if
/// so, return true.
bool
FunctionPassManager_New::runOnModule(Module &M) {
return FPM->runOnModule(M);
}
// FunctionPassManagerImpl_New implementation
// FunctionPassManager
/// Add pass P into the pass manager queue. If P is a BasicBlockPass then
/// either use it into active basic block pass manager or create new basic
/// block pass manager to handle pass P.
bool
FunctionPassManagerImpl_New::addPass(Pass *P) {
// If P is a BasicBlockPass then use BasicBlockPassManager_New.
if (BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P)) {
if (!activeBBPassManager
|| !activeBBPassManager->addPass(BP)) {
activeBBPassManager = new BasicBlockPassManager_New();
PassVector.push_back(activeBBPassManager);
if (!activeBBPassManager->addPass(BP))
assert(0 && "Unable to add Pass");
}
return true;
}
FunctionPass *FP = dynamic_cast<FunctionPass *>(P);
if (!FP)
return false;
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
if (!manageablePass(P))
return false;
// Take a note of analysis required by this pass.
noteDownRequiredAnalysis(P);
PassVector.push_back(FP);
activeBBPassManager = NULL;
return true;
}
/// Execute all of the passes scheduled for execution by invoking
/// runOnFunction method. Keep track of whether any of the passes modifies
/// the function, and if so, return true.
bool
FunctionPassManagerImpl_New::runOnModule(Module &M) {
bool Changed = false;
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
for (std::vector<Pass *>::iterator itr = PassVector.begin(),
e = PassVector.end(); itr != e; ++itr) {
Pass *P = *itr;
FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
Changed |= FP->runOnFunction(*I);
}
return Changed;
}
// ModulePassManager implementation
/// Add P into pass vector if it is manageble. If P is a FunctionPass
/// then use FunctionPassManagerImpl_New to manage it. Return false if P
/// is not manageable by this manager.
bool
ModulePassManager_New::addPass(Pass *P) {
// If P is FunctionPass then use function pass maanager.
if (FunctionPass *FP = dynamic_cast<FunctionPass*>(P)) {
activeFunctionPassManager = NULL;
if (!activeFunctionPassManager
|| !activeFunctionPassManager->addPass(P)) {
activeFunctionPassManager = new FunctionPassManagerImpl_New();
PassVector.push_back(activeFunctionPassManager);
if (!activeFunctionPassManager->addPass(FP))
assert(0 && "Unable to add pass");
}
return true;
}
ModulePass *MP = dynamic_cast<ModulePass *>(P);
if (!MP)
return false;
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
if (!manageablePass(P))
return false;
// Take a note of analysis required by this pass.
noteDownRequiredAnalysis(P);
PassVector.push_back(MP);
activeFunctionPassManager = NULL;
return true;
}
/// Execute all of the passes scheduled for execution by invoking
/// runOnModule method. Keep track of whether any of the passes modifies
/// the module, and if so, return true.
bool
ModulePassManager_New::runOnModule(Module &M) {
bool Changed = false;
for (std::vector<Pass *>::iterator itr = PassVector.begin(),
e = PassVector.end(); itr != e; ++itr) {
Pass *P = *itr;
ModulePass *MP = dynamic_cast<ModulePass*>(P);
Changed |= MP->runOnModule(M);
}
return Changed;
}
/// Schedule all passes from the queue by adding them in their
/// respective manager's queue.
void
PassManagerImpl_New::schedulePasses() {
/* TODO */
}
/// Add pass P to the queue of passes to run.
void
PassManagerImpl_New::add(Pass *P) {
/* TODO */
}
// PassManager_New implementation
/// Add P into active pass manager or use new module pass manager to
/// manage it.
bool
PassManagerImpl_New::addPass(Pass *P) {
if (!activeManager) {
activeManager = new ModulePassManager_New();
PassManagers.push_back(activeManager);
}
return activeManager->addPass(P);
}
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
bool
PassManagerImpl_New::run(Module &M) {
schedulePasses();
bool Changed = false;
for (std::vector<ModulePassManager_New *>::iterator itr = PassManagers.begin(),
e = PassManagers.end(); itr != e; ++itr) {
ModulePassManager_New *pm = *itr;
Changed |= pm->runOnModule(M);
}
return Changed;
}
/// Create new pass manager
PassManager_New::PassManager_New() {
PM = new PassManagerImpl_New();
}
/// add - Add a pass to the queue of passes to run. This passes ownership of
/// the Pass to the PassManager. When the PassManager is destroyed, the pass
/// will be destroyed as well, so there is no need to delete the pass. This
/// implies that all passes MUST be allocated with 'new'.
void
PassManager_New::add(Pass *P) {
PM->add(P);
}
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
bool
PassManager_New::run(Module &M) {
return PM->run(M);
}