1 //===- ARMConstantPoolValue.cpp - ARM constantpool value --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the ARM specific constantpool value class.
12 //===----------------------------------------------------------------------===//
14 #include "ARMConstantPoolValue.h"
15 #include "llvm/ADT/FoldingSet.h"
16 #include "llvm/Constant.h"
17 #include "llvm/Constants.h"
18 #include "llvm/GlobalValue.h"
19 #include "llvm/Type.h"
20 #include "llvm/Support/raw_ostream.h"
24 ARMConstantPoolValue::ARMConstantPoolValue(Constant *cval, unsigned id,
29 : MachineConstantPoolValue((const Type*)cval->getType()),
30 CVal(cval), S(NULL), LabelId(id), Kind(K), PCAdjust(PCAdj),
31 Modifier(Modif), AddCurrentAddress(AddCA) {}
33 ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C,
34 const char *s, unsigned id,
38 : MachineConstantPoolValue((const Type*)Type::getInt32Ty(C)),
39 CVal(NULL), S(strdup(s)), LabelId(id), Kind(ARMCP::CPExtSymbol),
40 PCAdjust(PCAdj), Modifier(Modif), AddCurrentAddress(AddCA) {}
42 ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, const char *Modif)
43 : MachineConstantPoolValue((const Type*)Type::getInt32Ty(gv->getContext())),
44 CVal(gv), S(NULL), LabelId(0), Kind(ARMCP::CPValue), PCAdjust(0),
47 GlobalValue *ARMConstantPoolValue::getGV() const {
48 return dyn_cast_or_null<GlobalValue>(CVal);
51 BlockAddress *ARMConstantPoolValue::getBlockAddress() const {
52 return dyn_cast_or_null<BlockAddress>(CVal);
55 int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
57 unsigned AlignMask = Alignment - 1;
58 const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
59 for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
60 if (Constants[i].isMachineConstantPoolEntry() &&
61 (Constants[i].getAlignment() & AlignMask) == 0) {
62 ARMConstantPoolValue *CPV =
63 (ARMConstantPoolValue *)Constants[i].Val.MachineCPVal;
64 if (CPV->CVal == CVal &&
65 CPV->LabelId == LabelId &&
66 CPV->PCAdjust == PCAdjust &&
67 (CPV->S == S || strcmp(CPV->S, S) == 0) &&
68 (CPV->Modifier == Modifier || strcmp(CPV->Modifier, Modifier) == 0))
76 ARMConstantPoolValue::~ARMConstantPoolValue() {
81 ARMConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) {
84 ID.AddInteger(LabelId);
85 ID.AddInteger(PCAdjust);
89 ARMConstantPoolValue::hasSameValue(ARMConstantPoolValue *ACPV) {
90 if (ACPV->Kind == Kind &&
92 ACPV->PCAdjust == PCAdjust &&
93 (ACPV->S == S || strcmp(ACPV->S, S) == 0) &&
94 (ACPV->Modifier == Modifier || strcmp(ACPV->Modifier, Modifier) == 0)) {
95 if (ACPV->LabelId == LabelId)
97 // Two PC relative constpool entries containing the same GV address or
98 // external symbols. FIXME: What about blockaddress?
99 if (Kind == ARMCP::CPValue || Kind == ARMCP::CPExtSymbol)
105 void ARMConstantPoolValue::dump() const {
106 errs() << " " << *this;
110 void ARMConstantPoolValue::print(raw_ostream &O) const {
112 O << CVal->getName();
115 if (Modifier) O << "(" << Modifier << ")";
117 O << "-(LPC" << LabelId << "+" << (unsigned)PCAdjust;
118 if (AddCurrentAddress) O << "-.";