void JITEmitter::emitConstantPool(MachineConstantPool *MCP) {
const std::vector<MachineConstantPoolEntry> &Constants = MCP->getConstants();
if (Constants.empty()) return;
MachineConstantPoolEntry CPE = Constants.back();
unsigned Size = CPE.Offset;
const Type *Ty = CPE.isMachineConstantPoolEntry()
? CPE.Val.MachineCPVal->getType() : CPE.Val.ConstVal->getType();
Size += TheJIT->getTargetData()->getABITypeSize(Ty);
unsigned Align = 1 << MCP->getConstantPoolAlignment();
ConstantPoolBase = allocateSpace(Size, Align);
ConstantPool = MCP;
if (ConstantPoolBase == 0) return; // Buffer overflow.
DOUT << "JIT: Emitted constant pool at [" << ConstantPoolBase
<< "] (size: " << Size << ", alignment: " << Align << ")\n";
// Initialize the memory for all of the constant pool entries.
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
void *CAddr = (char*)ConstantPoolBase+Constants[i].Offset;
if (Constants[i].isMachineConstantPoolEntry()) {
// FIXME: add support to lower machine constant pool values into bytes!
cerr << "Initialize memory with machine specific constant pool entry"
<< " has not been implemented!\n";
abort();
}
TheJIT->InitializeMemory(Constants[i].Val.ConstVal, CAddr);
DOUT << "JIT: CP" << i << " at [" << CAddr << "]\n";
}
}
static unsigned GetConstantPoolSizeInBytes(MachineConstantPool *MCP) {
const std::vector<MachineConstantPoolEntry> &Constants = MCP->getConstants();
if (Constants.empty()) return 0;
MachineConstantPoolEntry CPE = Constants.back();
unsigned Size = CPE.Offset;
const Type *Ty = CPE.isMachineConstantPoolEntry()
? CPE.Val.MachineCPVal->getType() : CPE.Val.ConstVal->getType();
Size += TheJIT->getTargetData()->getABITypeSize(Ty);
return Size;
}
