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-rw-r--r--lib/VMCore/Pass.cpp297
1 files changed, 0 insertions, 297 deletions
diff --git a/lib/VMCore/Pass.cpp b/lib/VMCore/Pass.cpp
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--- a/lib/VMCore/Pass.cpp
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-//===- Pass.cpp - LLVM Pass Infrastructure Implementation -----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the LLVM Pass infrastructure. It is primarily
-// responsible with ensuring that passes are executed and batched together
-// optimally.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Pass.h"
-#include "llvm/PassRegistry.h"
-#include "llvm/Assembly/PrintModulePass.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/PassNameParser.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-//===----------------------------------------------------------------------===//
-// Pass Implementation
-//
-
-// Force out-of-line virtual method.
-Pass::~Pass() {
- delete Resolver;
-}
-
-// Force out-of-line virtual method.
-ModulePass::~ModulePass() { }
-
-Pass *ModulePass::createPrinterPass(raw_ostream &O,
- const std::string &Banner) const {
- return createPrintModulePass(&O, false, Banner);
-}
-
-PassManagerType ModulePass::getPotentialPassManagerType() const {
- return PMT_ModulePassManager;
-}
-
-bool Pass::mustPreserveAnalysisID(char &AID) const {
- return Resolver->getAnalysisIfAvailable(&AID, true) != 0;
-}
-
-// dumpPassStructure - Implement the -debug-pass=Structure option
-void Pass::dumpPassStructure(unsigned Offset) {
- dbgs().indent(Offset*2) << getPassName() << "\n";
-}
-
-/// getPassName - Return a nice clean name for a pass. This usually
-/// implemented in terms of the name that is registered by one of the
-/// Registration templates, but can be overloaded directly.
-///
-const char *Pass::getPassName() const {
- AnalysisID AID = getPassID();
- const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(AID);
- if (PI)
- return PI->getPassName();
- return "Unnamed pass: implement Pass::getPassName()";
-}
-
-void Pass::preparePassManager(PMStack &) {
- // By default, don't do anything.
-}
-
-PassManagerType Pass::getPotentialPassManagerType() const {
- // Default implementation.
- return PMT_Unknown;
-}
-
-void Pass::getAnalysisUsage(AnalysisUsage &) const {
- // By default, no analysis results are used, all are invalidated.
-}
-
-void Pass::releaseMemory() {
- // By default, don't do anything.
-}
-
-void Pass::verifyAnalysis() const {
- // By default, don't do anything.
-}
-
-void *Pass::getAdjustedAnalysisPointer(AnalysisID AID) {
- return this;
-}
-
-ImmutablePass *Pass::getAsImmutablePass() {
- return 0;
-}
-
-PMDataManager *Pass::getAsPMDataManager() {
- return 0;
-}
-
-void Pass::setResolver(AnalysisResolver *AR) {
- assert(!Resolver && "Resolver is already set");
- Resolver = AR;
-}
-
-// print - Print out the internal state of the pass. This is called by Analyze
-// to print out the contents of an analysis. Otherwise it is not necessary to
-// implement this method.
-//
-void Pass::print(raw_ostream &O,const Module*) const {
- O << "Pass::print not implemented for pass: '" << getPassName() << "'!\n";
-}
-
-// dump - call print(cerr);
-void Pass::dump() const {
- print(dbgs(), 0);
-}
-
-//===----------------------------------------------------------------------===//
-// ImmutablePass Implementation
-//
-// Force out-of-line virtual method.
-ImmutablePass::~ImmutablePass() { }
-
-void ImmutablePass::initializePass() {
- // By default, don't do anything.
-}
-
-//===----------------------------------------------------------------------===//
-// FunctionPass Implementation
-//
-
-Pass *FunctionPass::createPrinterPass(raw_ostream &O,
- const std::string &Banner) const {
- return createPrintFunctionPass(Banner, &O);
-}
-
-bool FunctionPass::doInitialization(Module &) {
- // By default, don't do anything.
- return false;
-}
-
-bool FunctionPass::doFinalization(Module &) {
- // By default, don't do anything.
- return false;
-}
-
-PassManagerType FunctionPass::getPotentialPassManagerType() const {
- return PMT_FunctionPassManager;
-}
-
-//===----------------------------------------------------------------------===//
-// BasicBlockPass Implementation
-//
-
-Pass *BasicBlockPass::createPrinterPass(raw_ostream &O,
- const std::string &Banner) const {
-
- llvm_unreachable("BasicBlockPass printing unsupported.");
-}
-
-bool BasicBlockPass::doInitialization(Module &) {
- // By default, don't do anything.
- return false;
-}
-
-bool BasicBlockPass::doInitialization(Function &) {
- // By default, don't do anything.
- return false;
-}
-
-bool BasicBlockPass::doFinalization(Function &) {
- // By default, don't do anything.
- return false;
-}
-
-bool BasicBlockPass::doFinalization(Module &) {
- // By default, don't do anything.
- return false;
-}
-
-PassManagerType BasicBlockPass::getPotentialPassManagerType() const {
- return PMT_BasicBlockPassManager;
-}
-
-const PassInfo *Pass::lookupPassInfo(const void *TI) {
- return PassRegistry::getPassRegistry()->getPassInfo(TI);
-}
-
-const PassInfo *Pass::lookupPassInfo(StringRef Arg) {
- return PassRegistry::getPassRegistry()->getPassInfo(Arg);
-}
-
-Pass *Pass::createPass(AnalysisID ID) {
- const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(ID);
- if (!PI)
- return NULL;
- return PI->createPass();
-}
-
-Pass *PassInfo::createPass() const {
- assert((!isAnalysisGroup() || NormalCtor) &&
- "No default implementation found for analysis group!");
- assert(NormalCtor &&
- "Cannot call createPass on PassInfo without default ctor!");
- return NormalCtor();
-}
-
-//===----------------------------------------------------------------------===//
-// Analysis Group Implementation Code
-//===----------------------------------------------------------------------===//
-
-// RegisterAGBase implementation
-//
-RegisterAGBase::RegisterAGBase(const char *Name, const void *InterfaceID,
- const void *PassID, bool isDefault)
- : PassInfo(Name, InterfaceID) {
- PassRegistry::getPassRegistry()->registerAnalysisGroup(InterfaceID, PassID,
- *this, isDefault);
-}
-
-//===----------------------------------------------------------------------===//
-// PassRegistrationListener implementation
-//
-
-// PassRegistrationListener ctor - Add the current object to the list of
-// PassRegistrationListeners...
-PassRegistrationListener::PassRegistrationListener() {
- PassRegistry::getPassRegistry()->addRegistrationListener(this);
-}
-
-// dtor - Remove object from list of listeners...
-PassRegistrationListener::~PassRegistrationListener() {
- PassRegistry::getPassRegistry()->removeRegistrationListener(this);
-}
-
-// enumeratePasses - Iterate over the registered passes, calling the
-// passEnumerate callback on each PassInfo object.
-//
-void PassRegistrationListener::enumeratePasses() {
- PassRegistry::getPassRegistry()->enumerateWith(this);
-}
-
-PassNameParser::~PassNameParser() {}
-
-//===----------------------------------------------------------------------===//
-// AnalysisUsage Class Implementation
-//
-
-namespace {
- struct GetCFGOnlyPasses : public PassRegistrationListener {
- typedef AnalysisUsage::VectorType VectorType;
- VectorType &CFGOnlyList;
- GetCFGOnlyPasses(VectorType &L) : CFGOnlyList(L) {}
-
- void passEnumerate(const PassInfo *P) {
- if (P->isCFGOnlyPass())
- CFGOnlyList.push_back(P->getTypeInfo());
- }
- };
-}
-
-// setPreservesCFG - This function should be called to by the pass, iff they do
-// not:
-//
-// 1. Add or remove basic blocks from the function
-// 2. Modify terminator instructions in any way.
-//
-// This function annotates the AnalysisUsage info object to say that analyses
-// that only depend on the CFG are preserved by this pass.
-//
-void AnalysisUsage::setPreservesCFG() {
- // Since this transformation doesn't modify the CFG, it preserves all analyses
- // that only depend on the CFG (like dominators, loop info, etc...)
- GetCFGOnlyPasses(Preserved).enumeratePasses();
-}
-
-AnalysisUsage &AnalysisUsage::addPreserved(StringRef Arg) {
- const PassInfo *PI = Pass::lookupPassInfo(Arg);
- // If the pass exists, preserve it. Otherwise silently do nothing.
- if (PI) Preserved.push_back(PI->getTypeInfo());
- return *this;
-}
-
-AnalysisUsage &AnalysisUsage::addRequiredID(const void *ID) {
- Required.push_back(ID);
- return *this;
-}
-
-AnalysisUsage &AnalysisUsage::addRequiredID(char &ID) {
- Required.push_back(&ID);
- return *this;
-}
-
-AnalysisUsage &AnalysisUsage::addRequiredTransitiveID(char &ID) {
- Required.push_back(&ID);
- RequiredTransitive.push_back(&ID);
- return *this;
-}
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