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llvm-project/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp

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//===- ARMConstantPoolValue.cpp - ARM constantpool value --------*- C++ -*-===//
//
// 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 ARM specific constantpool value class.
//
//===----------------------------------------------------------------------===//
#include "ARMConstantPoolValue.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/Constant.h"
#include "llvm/Constants.h"
#include "llvm/GlobalValue.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdlib>
using namespace llvm;
//===----------------------------------------------------------------------===//
// ARMConstantPoolValue
//===----------------------------------------------------------------------===//
ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
ARMCP::ARMCPKind kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier modifier,
bool addCurrentAddress)
: MachineConstantPoolValue(Ty), LabelId(id), Kind(kind),
PCAdjust(PCAdj), Modifier(modifier),
AddCurrentAddress(addCurrentAddress) {}
ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C, unsigned id,
ARMCP::ARMCPKind kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier modifier,
bool addCurrentAddress)
: MachineConstantPoolValue((Type*)Type::getInt32Ty(C)),
LabelId(id), Kind(kind), PCAdjust(PCAdj), Modifier(modifier),
AddCurrentAddress(addCurrentAddress) {}
ARMConstantPoolValue::~ARMConstantPoolValue() {}
const char *ARMConstantPoolValue::getModifierText() const {
switch (Modifier) {
default: llvm_unreachable("Unknown modifier!");
// FIXME: Are these case sensitive? It'd be nice to lower-case all the
// strings if that's legal.
case ARMCP::no_modifier: return "none";
case ARMCP::TLSGD: return "tlsgd";
case ARMCP::GOT: return "GOT";
case ARMCP::GOTOFF: return "GOTOFF";
case ARMCP::GOTTPOFF: return "gottpoff";
case ARMCP::TPOFF: return "tpoff";
}
}
int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment) {
assert(false && "Shouldn't be calling this directly!");
return -1;
}
void
ARMConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddInteger(LabelId);
ID.AddInteger(PCAdjust);
}
bool
ARMConstantPoolValue::hasSameValue(ARMConstantPoolValue *ACPV) {
if (ACPV->Kind == Kind &&
ACPV->PCAdjust == PCAdjust &&
ACPV->Modifier == Modifier) {
if (ACPV->LabelId == LabelId)
return true;
// Two PC relative constpool entries containing the same GV address or
// external symbols. FIXME: What about blockaddress?
if (Kind == ARMCP::CPValue || Kind == ARMCP::CPExtSymbol)
return true;
}
return false;
}
void ARMConstantPoolValue::dump() const {
errs() << " " << *this;
}
void ARMConstantPoolValue::print(raw_ostream &O) const {
if (Modifier) O << "(" << getModifierText() << ")";
if (PCAdjust != 0) {
O << "-(LPC" << LabelId << "+" << (unsigned)PCAdjust;
if (AddCurrentAddress) O << "-.";
O << ")";
}
}
//===----------------------------------------------------------------------===//
// ARMConstantPoolConstant
//===----------------------------------------------------------------------===//
ARMConstantPoolConstant::ARMConstantPoolConstant(Type *Ty,
const Constant *C,
unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress)
: ARMConstantPoolValue(Ty, ID, Kind, PCAdj, Modifier, AddCurrentAddress),
CVal(C) {}
ARMConstantPoolConstant::ARMConstantPoolConstant(const Constant *C,
unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress)
: ARMConstantPoolValue((Type*)C->getType(), ID, Kind, PCAdj, Modifier,
AddCurrentAddress),
CVal(C) {}
ARMConstantPoolConstant *
ARMConstantPoolConstant::Create(const Constant *C, unsigned ID) {
return new ARMConstantPoolConstant(C, ID, ARMCP::CPValue, 0,
ARMCP::no_modifier, false);
}
ARMConstantPoolConstant *
ARMConstantPoolConstant::Create(const GlobalValue *GV,
ARMCP::ARMCPModifier Modifier) {
return new ARMConstantPoolConstant((Type*)Type::getInt32Ty(GV->getContext()),
GV, 0, ARMCP::CPValue, 0,
Modifier, false);
}
ARMConstantPoolConstant *
ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
ARMCP::ARMCPKind Kind, unsigned char PCAdj) {
return new ARMConstantPoolConstant(C, ID, Kind, PCAdj,
ARMCP::no_modifier, false);
}
ARMConstantPoolConstant *
ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
ARMCP::ARMCPKind Kind, unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress) {
return new ARMConstantPoolConstant(C, ID, Kind, PCAdj, Modifier,
AddCurrentAddress);
}
const GlobalValue *ARMConstantPoolConstant::getGV() const {
return dyn_cast_or_null<GlobalValue>(CVal);
}
const BlockAddress *ARMConstantPoolConstant::getBlockAddress() const {
return dyn_cast_or_null<BlockAddress>(CVal);
}
int ARMConstantPoolConstant::getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment) {
unsigned AlignMask = Alignment - 1;
const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
if (Constants[i].isMachineConstantPoolEntry() &&
(Constants[i].getAlignment() & AlignMask) == 0) {
ARMConstantPoolValue *CPV =
(ARMConstantPoolValue *)Constants[i].Val.MachineCPVal;
ARMConstantPoolConstant *APC = dyn_cast<ARMConstantPoolConstant>(CPV);
if (!APC) continue;
if (APC->CVal == CVal && equals(APC))
return i;
}
}
return -1;
}
bool ARMConstantPoolConstant::hasSameValue(ARMConstantPoolValue *ACPV) {
const ARMConstantPoolConstant *ACPC = dyn_cast<ARMConstantPoolConstant>(ACPV);
return ACPC && ACPC->CVal == CVal && ARMConstantPoolValue::hasSameValue(ACPV);
}
void ARMConstantPoolConstant::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddPointer(CVal);
ARMConstantPoolValue::addSelectionDAGCSEId(ID);
}
void ARMConstantPoolConstant::print(raw_ostream &O) const {
O << CVal->getName();
ARMConstantPoolValue::print(O);
}
//===----------------------------------------------------------------------===//
// ARMConstantPoolSymbol
//===----------------------------------------------------------------------===//
ARMConstantPoolSymbol::ARMConstantPoolSymbol(LLVMContext &C, const char *s,
unsigned id,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress)
: ARMConstantPoolValue(C, id, ARMCP::CPExtSymbol, PCAdj, Modifier,
AddCurrentAddress),
S(strdup(s)) {}
ARMConstantPoolSymbol::~ARMConstantPoolSymbol() {
free((void*)S);
}
ARMConstantPoolSymbol *
ARMConstantPoolSymbol::Create(LLVMContext &C, const char *s,
unsigned ID, unsigned char PCAdj) {
return new ARMConstantPoolSymbol(C, s, ID, PCAdj, ARMCP::no_modifier, false);
}
static bool CPV_streq(const char *S1, const char *S2) {
if (S1 == S2)
return true;
if (S1 && S2 && strcmp(S1, S2) == 0)
return true;
return false;
}
int ARMConstantPoolSymbol::getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment) {
unsigned AlignMask = Alignment - 1;
const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
if (Constants[i].isMachineConstantPoolEntry() &&
(Constants[i].getAlignment() & AlignMask) == 0) {
ARMConstantPoolValue *CPV =
(ARMConstantPoolValue *)Constants[i].Val.MachineCPVal;
ARMConstantPoolSymbol *APS = dyn_cast<ARMConstantPoolSymbol>(CPV);
if (!APS) continue;
if (CPV_streq(APS->S, S) && equals(APS))
return i;
}
}
return -1;
}
bool ARMConstantPoolSymbol::hasSameValue(ARMConstantPoolValue *ACPV) {
const ARMConstantPoolSymbol *ACPS = dyn_cast<ARMConstantPoolSymbol>(ACPV);
return ACPS && CPV_streq(ACPS->S, S) &&
ARMConstantPoolValue::hasSameValue(ACPV);
}
void ARMConstantPoolSymbol::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddPointer(S);
ARMConstantPoolValue::addSelectionDAGCSEId(ID);
}
void ARMConstantPoolSymbol::print(raw_ostream &O) const {
O << S;
ARMConstantPoolValue::print(O);
}
//===----------------------------------------------------------------------===//
// ARMConstantPoolMBB
//===----------------------------------------------------------------------===//
ARMConstantPoolMBB::ARMConstantPoolMBB(LLVMContext &C,
const MachineBasicBlock *mbb,
unsigned id, unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress)
: ARMConstantPoolValue(C, id, ARMCP::CPMachineBasicBlock, PCAdj,
Modifier, AddCurrentAddress),
MBB(mbb) {}
ARMConstantPoolMBB *ARMConstantPoolMBB::Create(LLVMContext &C,
const MachineBasicBlock *mbb,
unsigned ID,
unsigned char PCAdj) {
return new ARMConstantPoolMBB(C, mbb, ID, PCAdj, ARMCP::no_modifier, false);
}
int ARMConstantPoolMBB::getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment) {
unsigned AlignMask = Alignment - 1;
const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
if (Constants[i].isMachineConstantPoolEntry() &&
(Constants[i].getAlignment() & AlignMask) == 0) {
ARMConstantPoolValue *CPV =
(ARMConstantPoolValue *)Constants[i].Val.MachineCPVal;
ARMConstantPoolMBB *APMBB = dyn_cast<ARMConstantPoolMBB>(CPV);
if (!APMBB) continue;
if (APMBB->MBB == MBB && equals(APMBB))
return i;
}
}
return -1;
}
bool ARMConstantPoolMBB::hasSameValue(ARMConstantPoolValue *ACPV) {
const ARMConstantPoolMBB *ACPMBB = dyn_cast<ARMConstantPoolMBB>(ACPV);
return ACPMBB && ACPMBB->MBB == MBB &&
ARMConstantPoolValue::hasSameValue(ACPV);
}
void ARMConstantPoolMBB::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddPointer(MBB);
ARMConstantPoolValue::addSelectionDAGCSEId(ID);
}
void ARMConstantPoolMBB::print(raw_ostream &O) const {
O << "BB#" << MBB->getNumber();
ARMConstantPoolValue::print(O);
}
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