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Add an ARMConstantPool class for external symbols. This will split out the support for external symbols from the base class.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140938 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-10-01 08:36:59 +00:00
parent 3f4e4592c3
commit ff4a8023ec
2 changed files with 118 additions and 5 deletions
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82
lib/Target/ARM/ARMConstantPoolValue.cpp
View File

@ -35,6 +35,15 @@ ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
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(LLVMContext &C,
const MachineBasicBlock *mbb,
unsigned id,
@ -55,6 +64,10 @@ ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C,
S(strdup(s)), LabelId(id), Kind(ARMCP::CPExtSymbol),
PCAdjust(PCAdj), Modifier(Modif), AddCurrentAddress(AddCA) {}
ARMConstantPoolValue::~ARMConstantPoolValue() {
free((void*)S);
}
const MachineBasicBlock *ARMConstantPoolValue::getMBB() const {
return MBB;
}
@ -101,10 +114,6 @@ int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
return -1;
}
ARMConstantPoolValue::~ARMConstantPoolValue() {
free((void*)S);
}
void
ARMConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
ID.AddPointer(S);
@ -245,3 +254,68 @@ 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,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress) {
return new ARMConstantPoolSymbol(C, s, ID, PCAdj, Modifier,
AddCurrentAddress);
}
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 (APS->getLabelId() == this->getLabelId() &&
APS->getPCAdjustment() == this->getPCAdjustment() &&
CPV_streq(APS->getSymbol(), this->getSymbol()) &&
APS->getModifier() == this->getModifier())
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);
}

41
lib/Target/ARM/ARMConstantPoolValue.h
View File

@ -63,6 +63,9 @@ protected:
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
ARMConstantPoolValue(LLVMContext &C, unsigned id, ARMCP::ARMCPKind Kind,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
ARMConstantPoolValue(LLVMContext &C, const MachineBasicBlock *mbb,unsigned id,
ARMCP::ARMCPKind Kind = ARMCP::CPValue,
@ -73,7 +76,7 @@ public:
unsigned char PCAdj = 0,
ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier,
bool AddCurrentAddress = false);
~ARMConstantPoolValue();
virtual ~ARMConstantPoolValue();
const char *getSymbol() const { return S; }
const MachineBasicBlock *getMBB() const;
@ -166,6 +169,42 @@ public:
static bool classof(const ARMConstantPoolConstant *) { return true; }
};
/// ARMConstantPoolSymbol - ARM-specific constantpool values for external
/// symbols.
class ARMConstantPoolSymbol : public ARMConstantPoolValue {
const char *S; // ExtSymbol being loaded.
ARMConstantPoolSymbol(LLVMContext &C, const char *s, unsigned id,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
~ARMConstantPoolSymbol();
static ARMConstantPoolSymbol *Create(LLVMContext &C, const char *s,
unsigned ID, unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
const char *getSymbol() const { return S; }
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
/// hasSameValue - Return true if this ARM constpool value can share the same
/// constantpool entry as another ARM constpool value.
virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
virtual void print(raw_ostream &O) const;
static bool classof(const ARMConstantPoolValue *ACPV) {
return ACPV->isExtSymbol();
}
static bool classof(const ARMConstantPoolSymbol *) { return true; }
};
} // End llvm namespace
#endif