143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
//===-- llvm/CodeGen/PseudoSourceValue.cpp ----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the PseudoSourceValue class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/CodeGen/PseudoSourceValue.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Mutex.h"
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#include "llvm/Support/raw_ostream.h"
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#include <map>
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using namespace llvm;
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static const char *const PSVNames[] = {
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"Stack", "GOT", "JumpTable", "ConstantPool", "FixedStack",
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"GlobalValueCallEntry", "ExternalSymbolCallEntry"};
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PseudoSourceValue::PseudoSourceValue(PSVKind Kind) : Kind(Kind) {}
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PseudoSourceValue::~PseudoSourceValue() {}
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void PseudoSourceValue::printCustom(raw_ostream &O) const {
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O << PSVNames[Kind];
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}
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bool PseudoSourceValue::isConstant(const MachineFrameInfo *) const {
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if (isStack())
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return false;
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if (isGOT() || isConstantPool() || isJumpTable())
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return true;
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llvm_unreachable("Unknown PseudoSourceValue!");
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}
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bool PseudoSourceValue::isAliased(const MachineFrameInfo *) const {
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if (isStack() || isGOT() || isConstantPool() || isJumpTable())
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return false;
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llvm_unreachable("Unknown PseudoSourceValue!");
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}
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bool PseudoSourceValue::mayAlias(const MachineFrameInfo *) const {
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return !(isGOT() || isConstantPool() || isJumpTable());
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}
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bool FixedStackPseudoSourceValue::isConstant(
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const MachineFrameInfo *MFI) const {
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return MFI && MFI->isImmutableObjectIndex(FI);
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}
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bool FixedStackPseudoSourceValue::isAliased(const MachineFrameInfo *MFI) const {
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if (!MFI)
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return true;
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return MFI->isAliasedObjectIndex(FI);
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}
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bool FixedStackPseudoSourceValue::mayAlias(const MachineFrameInfo *MFI) const {
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if (!MFI)
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return true;
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// Spill slots will not alias any LLVM IR value.
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return !MFI->isSpillSlotObjectIndex(FI);
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}
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void FixedStackPseudoSourceValue::printCustom(raw_ostream &OS) const {
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OS << "FixedStack" << FI;
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}
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CallEntryPseudoSourceValue::CallEntryPseudoSourceValue(PSVKind Kind)
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: PseudoSourceValue(Kind) {}
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bool CallEntryPseudoSourceValue::isConstant(const MachineFrameInfo *) const {
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return false;
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}
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bool CallEntryPseudoSourceValue::isAliased(const MachineFrameInfo *) const {
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return false;
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}
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bool CallEntryPseudoSourceValue::mayAlias(const MachineFrameInfo *) const {
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return false;
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}
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GlobalValuePseudoSourceValue::GlobalValuePseudoSourceValue(
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const GlobalValue *GV)
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: CallEntryPseudoSourceValue(GlobalValueCallEntry), GV(GV) {}
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ExternalSymbolPseudoSourceValue::ExternalSymbolPseudoSourceValue(const char *ES)
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: CallEntryPseudoSourceValue(ExternalSymbolCallEntry), ES(ES) {}
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PseudoSourceValueManager::PseudoSourceValueManager()
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: StackPSV(PseudoSourceValue::Stack), GOTPSV(PseudoSourceValue::GOT),
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JumpTablePSV(PseudoSourceValue::JumpTable),
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ConstantPoolPSV(PseudoSourceValue::ConstantPool) {}
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const PseudoSourceValue *PseudoSourceValueManager::getStack() {
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return &StackPSV;
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}
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const PseudoSourceValue *PseudoSourceValueManager::getGOT() { return &GOTPSV; }
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const PseudoSourceValue *PseudoSourceValueManager::getConstantPool() {
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return &ConstantPoolPSV;
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}
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const PseudoSourceValue *PseudoSourceValueManager::getJumpTable() {
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return &JumpTablePSV;
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}
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const PseudoSourceValue *PseudoSourceValueManager::getFixedStack(int FI) {
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std::unique_ptr<FixedStackPseudoSourceValue> &V = FSValues[FI];
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if (!V)
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V = llvm::make_unique<FixedStackPseudoSourceValue>(FI);
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return V.get();
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}
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const PseudoSourceValue *
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PseudoSourceValueManager::getGlobalValueCallEntry(const GlobalValue *GV) {
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std::unique_ptr<const GlobalValuePseudoSourceValue> &E =
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GlobalCallEntries[GV];
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if (!E)
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E = llvm::make_unique<GlobalValuePseudoSourceValue>(GV);
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return E.get();
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}
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const PseudoSourceValue *
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PseudoSourceValueManager::getExternalSymbolCallEntry(const char *ES) {
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std::unique_ptr<const ExternalSymbolPseudoSourceValue> &E =
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ExternalCallEntries[ES];
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if (!E)
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E = llvm::make_unique<ExternalSymbolPseudoSourceValue>(ES);
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return E.get();
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}
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