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//===- ARMConstantPoolValue.cpp - ARM constantpool value ------------------===//
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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 ARM specific constantpool value class.
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//
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//===----------------------------------------------------------------------===//
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#include "ARMConstantPoolValue.h"
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#include "llvm/ADT/FoldingSet.h"
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/IR/Constant.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/IR/Type.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// ARMConstantPoolValue
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//===----------------------------------------------------------------------===//
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ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
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ARMCP::ARMCPKind kind,
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unsigned char PCAdj,
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ARMCP::ARMCPModifier modifier,
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bool addCurrentAddress)
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: MachineConstantPoolValue(Ty), LabelId(id), Kind(kind),
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PCAdjust(PCAdj), Modifier(modifier),
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AddCurrentAddress(addCurrentAddress) {}
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ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C, unsigned id,
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ARMCP::ARMCPKind kind,
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unsigned char PCAdj,
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ARMCP::ARMCPModifier modifier,
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bool addCurrentAddress)
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: MachineConstantPoolValue((Type*)Type::getInt32Ty(C)),
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LabelId(id), Kind(kind), PCAdjust(PCAdj), Modifier(modifier),
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AddCurrentAddress(addCurrentAddress) {}
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ARMConstantPoolValue::~ARMConstantPoolValue() = default;
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StringRef ARMConstantPoolValue::getModifierText() const {
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switch (Modifier) {
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// FIXME: Are these case sensitive? It'd be nice to lower-case all the
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// strings if that's legal.
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case ARMCP::no_modifier:
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return "none";
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case ARMCP::TLSGD:
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return "tlsgd";
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case ARMCP::GOT_PREL:
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return "GOT_PREL";
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case ARMCP::GOTTPOFF:
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return "gottpoff";
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case ARMCP::TPOFF:
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return "tpoff";
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case ARMCP::SBREL:
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return "SBREL";
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case ARMCP::SECREL:
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return "secrel32";
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}
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llvm_unreachable("Unknown modifier!");
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}
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int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
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unsigned Alignment) {
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llvm_unreachable("Shouldn't be calling this directly!");
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}
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void
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ARMConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
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ID.AddInteger(LabelId);
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ID.AddInteger(PCAdjust);
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}
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bool
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ARMConstantPoolValue::hasSameValue(ARMConstantPoolValue *ACPV) {
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if (ACPV->Kind == Kind &&
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ACPV->PCAdjust == PCAdjust &&
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ACPV->Modifier == Modifier &&
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ACPV->LabelId == LabelId &&
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ACPV->AddCurrentAddress == AddCurrentAddress) {
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// Two PC relative constpool entries containing the same GV address or
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// external symbols. FIXME: What about blockaddress?
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if (Kind == ARMCP::CPValue || Kind == ARMCP::CPExtSymbol)
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return true;
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}
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return false;
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}
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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LLVM_DUMP_METHOD void ARMConstantPoolValue::dump() const {
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errs() << " " << *this;
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}
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#endif
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void ARMConstantPoolValue::print(raw_ostream &O) const {
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if (Modifier) O << "(" << getModifierText() << ")";
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if (PCAdjust != 0) {
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O << "-(LPC" << LabelId << "+" << (unsigned)PCAdjust;
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if (AddCurrentAddress) O << "-.";
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O << ")";
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}
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}
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//===----------------------------------------------------------------------===//
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// ARMConstantPoolConstant
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//===----------------------------------------------------------------------===//
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ARMConstantPoolConstant::ARMConstantPoolConstant(Type *Ty,
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const Constant *C,
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unsigned ID,
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ARMCP::ARMCPKind Kind,
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unsigned char PCAdj,
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ARMCP::ARMCPModifier Modifier,
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bool AddCurrentAddress)
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: ARMConstantPoolValue(Ty, ID, Kind, PCAdj, Modifier, AddCurrentAddress),
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CVal(C) {}
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ARMConstantPoolConstant::ARMConstantPoolConstant(const Constant *C,
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unsigned ID,
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ARMCP::ARMCPKind Kind,
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unsigned char PCAdj,
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ARMCP::ARMCPModifier Modifier,
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bool AddCurrentAddress)
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: ARMConstantPoolValue((Type*)C->getType(), ID, Kind, PCAdj, Modifier,
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AddCurrentAddress),
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CVal(C) {}
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ARMConstantPoolConstant::ARMConstantPoolConstant(const GlobalVariable *GV,
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const Constant *C)
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: ARMConstantPoolValue((Type *)C->getType(), 0, ARMCP::CPPromotedGlobal, 0,
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ARMCP::no_modifier, false), CVal(C) {
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GVars.insert(GV);
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}
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ARMConstantPoolConstant *
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ARMConstantPoolConstant::Create(const Constant *C, unsigned ID) {
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return new ARMConstantPoolConstant(C, ID, ARMCP::CPValue, 0,
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ARMCP::no_modifier, false);
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}
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ARMConstantPoolConstant *
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ARMConstantPoolConstant::Create(const GlobalVariable *GVar,
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const Constant *Initializer) {
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return new ARMConstantPoolConstant(GVar, Initializer);
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}
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ARMConstantPoolConstant *
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ARMConstantPoolConstant::Create(const GlobalValue *GV,
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ARMCP::ARMCPModifier Modifier) {
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return new ARMConstantPoolConstant((Type*)Type::getInt32Ty(GV->getContext()),
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GV, 0, ARMCP::CPValue, 0,
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Modifier, false);
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}
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ARMConstantPoolConstant *
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ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
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ARMCP::ARMCPKind Kind, unsigned char PCAdj) {
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return new ARMConstantPoolConstant(C, ID, Kind, PCAdj,
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ARMCP::no_modifier, false);
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}
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ARMConstantPoolConstant *
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ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
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ARMCP::ARMCPKind Kind, unsigned char PCAdj,
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ARMCP::ARMCPModifier Modifier,
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bool AddCurrentAddress) {
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return new ARMConstantPoolConstant(C, ID, Kind, PCAdj, Modifier,
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AddCurrentAddress);
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}
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const GlobalValue *ARMConstantPoolConstant::getGV() const {
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return dyn_cast_or_null<GlobalValue>(CVal);
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}
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const BlockAddress *ARMConstantPoolConstant::getBlockAddress() const {
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return dyn_cast_or_null<BlockAddress>(CVal);
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}
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int ARMConstantPoolConstant::getExistingMachineCPValue(MachineConstantPool *CP,
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unsigned Alignment) {
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int index =
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getExistingMachineCPValueImpl<ARMConstantPoolConstant>(CP, Alignment);
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if (index != -1) {
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auto *CPV = static_cast<ARMConstantPoolValue*>(
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CP->getConstants()[index].Val.MachineCPVal);
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auto *Constant = cast<ARMConstantPoolConstant>(CPV);
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Constant->GVars.insert(GVars.begin(), GVars.end());
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}
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return index;
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}
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bool ARMConstantPoolConstant::hasSameValue(ARMConstantPoolValue *ACPV) {
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const ARMConstantPoolConstant *ACPC = dyn_cast<ARMConstantPoolConstant>(ACPV);
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return ACPC && ACPC->CVal == CVal && ARMConstantPoolValue::hasSameValue(ACPV);
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}
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void ARMConstantPoolConstant::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
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ID.AddPointer(CVal);
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for (const auto *GV : GVars)
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ID.AddPointer(GV);
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ARMConstantPoolValue::addSelectionDAGCSEId(ID);
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}
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void ARMConstantPoolConstant::print(raw_ostream &O) const {
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O << CVal->getName();
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ARMConstantPoolValue::print(O);
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}
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//===----------------------------------------------------------------------===//
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// ARMConstantPoolSymbol
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//===----------------------------------------------------------------------===//
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ARMConstantPoolSymbol::ARMConstantPoolSymbol(LLVMContext &C, StringRef s,
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unsigned id, unsigned char PCAdj,
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ARMCP::ARMCPModifier Modifier,
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bool AddCurrentAddress)
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: ARMConstantPoolValue(C, id, ARMCP::CPExtSymbol, PCAdj, Modifier,
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AddCurrentAddress),
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S(s) {}
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ARMConstantPoolSymbol *ARMConstantPoolSymbol::Create(LLVMContext &C,
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StringRef s, unsigned ID,
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unsigned char PCAdj) {
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return new ARMConstantPoolSymbol(C, s, ID, PCAdj, ARMCP::no_modifier, false);
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}
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int ARMConstantPoolSymbol::getExistingMachineCPValue(MachineConstantPool *CP,
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unsigned Alignment) {
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return getExistingMachineCPValueImpl<ARMConstantPoolSymbol>(CP, Alignment);
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}
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bool ARMConstantPoolSymbol::hasSameValue(ARMConstantPoolValue *ACPV) {
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const ARMConstantPoolSymbol *ACPS = dyn_cast<ARMConstantPoolSymbol>(ACPV);
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return ACPS && ACPS->S == S && ARMConstantPoolValue::hasSameValue(ACPV);
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}
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void ARMConstantPoolSymbol::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
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ID.AddString(S);
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ARMConstantPoolValue::addSelectionDAGCSEId(ID);
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}
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void ARMConstantPoolSymbol::print(raw_ostream &O) const {
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O << S;
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ARMConstantPoolValue::print(O);
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}
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//===----------------------------------------------------------------------===//
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// ARMConstantPoolMBB
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//===----------------------------------------------------------------------===//
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ARMConstantPoolMBB::ARMConstantPoolMBB(LLVMContext &C,
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const MachineBasicBlock *mbb,
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unsigned id, unsigned char PCAdj,
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ARMCP::ARMCPModifier Modifier,
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bool AddCurrentAddress)
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: ARMConstantPoolValue(C, id, ARMCP::CPMachineBasicBlock, PCAdj,
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Modifier, AddCurrentAddress),
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MBB(mbb) {}
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ARMConstantPoolMBB *ARMConstantPoolMBB::Create(LLVMContext &C,
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const MachineBasicBlock *mbb,
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unsigned ID,
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unsigned char PCAdj) {
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return new ARMConstantPoolMBB(C, mbb, ID, PCAdj, ARMCP::no_modifier, false);
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}
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int ARMConstantPoolMBB::getExistingMachineCPValue(MachineConstantPool *CP,
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unsigned Alignment) {
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return getExistingMachineCPValueImpl<ARMConstantPoolMBB>(CP, Alignment);
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}
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bool ARMConstantPoolMBB::hasSameValue(ARMConstantPoolValue *ACPV) {
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const ARMConstantPoolMBB *ACPMBB = dyn_cast<ARMConstantPoolMBB>(ACPV);
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return ACPMBB && ACPMBB->MBB == MBB &&
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ARMConstantPoolValue::hasSameValue(ACPV);
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}
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void ARMConstantPoolMBB::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
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ID.AddPointer(MBB);
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ARMConstantPoolValue::addSelectionDAGCSEId(ID);
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}
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void ARMConstantPoolMBB::print(raw_ostream &O) const {
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O << printMBBReference(*MBB);
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ARMConstantPoolValue::print(O);
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}
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