#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Mangler.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "PIC16GenAsmWriter.inc"
-inline static bool isLocalToFunc (std::string &FuncName, std::string &VarName) {
- if (VarName.find(FuncName + ".auto.") != std::string::npos
- || VarName.find(FuncName + ".arg.") != std::string::npos)
- return true;
-
- return false;
-}
-
-inline static bool isLocalName (std::string &Name) {
- if (Name.find(".auto.") != std::string::npos
- || Name.find(".arg.") != std::string::npos)
- return true;
-
- return false;
-}
-
bool PIC16AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- std::string NewBank = "";
- unsigned Operands = MI->getNumOperands();
- if (Operands > 1) {
- // Global address or external symbol should be second operand from last
- // if we want to print banksel for it.
- unsigned BankSelVar = Operands - 2;
- // In cases where an instruction has a def or use defined in td file,
- // that def or use becomes a machine instruction operand.
- // eg. addfw_1 instruction defines STATUS register. So the machine
- // instruction for it has MO_Register Operand as its last operand.
- while ((MI->getOperand(BankSelVar + 1).getType() ==
- MachineOperand::MO_Register) && (BankSelVar > 0))
- BankSelVar--;
- const MachineOperand &Op = MI->getOperand(BankSelVar);
- unsigned OpType = Op.getType();
- if (OpType == MachineOperand::MO_GlobalAddress ||
- OpType == MachineOperand::MO_ExternalSymbol) {
- if (OpType == MachineOperand::MO_GlobalAddress )
- NewBank = Op.getGlobal()->getSection();
- else {
- // External Symbol is generated for temp data. Temp data in in
- // fdata.<functionname>.# section.
- NewBank = "fdata." + CurrentFnName +".#";
- }
- // Operand after global address or external symbol should be banksel.
- // Value 1 for this operand means we need to generate banksel else do not
- // generate banksel.
- const MachineOperand &BS = MI->getOperand(BankSelVar+1);
- // If Section names are same then the variables are in same section.
- // This is not true for external variables as section names for global
- // variables in all files are same at this time. For eg. initialized
- // data in put in idata.# section in all files.
- if (((int)BS.getImm() == 1) &&
- ((Op.isGlobal() && Op.getGlobal()->hasExternalLinkage()) ||
- (NewBank.compare(CurBank) != 0))) {
- O << "\tbanksel ";
- printOperand(MI, BankSelVar);
- O << "\n";
- CurBank = NewBank;
- }
- }
- }
printInstruction(MI);
return true;
}
-/// runOnMachineFunction - This uses the printInstruction()
-/// method to print assembly for each instruction.
+/// runOnMachineFunction - This emits the frame section, autos section and
+/// assembly for each instruction. Also takes care of function begin debug
+/// directive and file begin debug directive (if required) for the function.
///
bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
this->MF = &MF;
const Function *F = MF.getFunction();
CurrentFnName = Mang->getValueName(F);
- // Emit the function variables.
- emitFunctionData(MF);
- std::string codeSection;
- codeSection = "code." + CurrentFnName + ".# " + "CODE";
- const Section *fCodeSection = TAI->getNamedSection(codeSection.c_str(),
- SectionFlags::Code);
+ // Emit the function frame (args and temps).
+ EmitFunctionFrame(MF);
+
+ DbgInfo.BeginFunction(MF);
+
+ // Emit the autos section of function.
+ EmitAutos(CurrentFnName);
+
+ // Now emit the instructions of function in its code section.
+ const char *codeSection = PAN::getCodeSectionName(CurrentFnName).c_str();
+
+ const Section *fCodeSection = TAI->getNamedSection(codeSection,
+ SectionFlags::Code);
+ // Start the Code Section.
O << "\n";
SwitchToSection (fCodeSection);
- O << CurrentFnName << ":\n";
- O << " retlw low(" << CurrentFnName << ".frame)\n";
- O << " retlw high(" << CurrentFnName << ".frame)\n";
+ // Emit the frame address of the function at the beginning of code.
+ O << "\tretlw low(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
+ O << "\tretlw high(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
+
+ // Emit function start label.
+ O << CurrentFnName << ":\n";
+ DebugLoc CurDL;
+ O << "\n";
// Print out code for the function.
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
+
// Print a label for the basic block.
if (I != MF.begin()) {
printBasicBlockLabel(I, true);
O << '\n';
}
- CurBank = "";
+
+ // Print a basic block.
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II) {
+
+ // Emit the line directive if source line changed.
+ const DebugLoc DL = II->getDebugLoc();
+ if (!DL.isUnknown() && DL != CurDL) {
+ DbgInfo.ChangeDebugLoc(MF, DL);
+ CurDL = DL;
+ }
+
// Print the assembly for the instruction.
- printMachineInstruction(II);
+ printMachineInstruction(II);
}
}
+
+ // Emit function end debug directives.
+ DbgInfo.EndFunction(MF);
+
return false; // we didn't modify anything.
}
///
FunctionPass *llvm::createPIC16CodePrinterPass(raw_ostream &o,
PIC16TargetMachine &tm,
- bool fast, bool verbose) {
- return new PIC16AsmPrinter(o, tm, tm.getTargetAsmInfo(), fast, verbose);
+ bool verbose) {
+ return new PIC16AsmPrinter(o, tm, tm.getTargetAsmInfo(), verbose);
}
+
+// printOperand - print operand of insn.
void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
const MachineOperand &MO = MI->getOperand(opNum);
if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
else
- assert(0 && "not implemented");
- return;
+ LLVM_UNREACHABLE("not implemented");
+ return;
case MachineOperand::MO_Immediate:
O << (int)MO.getImm();
return;
- case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_GlobalAddress: {
O << Mang->getValueName(MO.getGlobal());
break;
+ }
+ case MachineOperand::MO_ExternalSymbol: {
+ const char *Sname = MO.getSymbolName();
- case MachineOperand::MO_ExternalSymbol:
- O << MO.getSymbolName();
- break;
+ // If its a libcall name, record it to decls section.
+ if (PAN::getSymbolTag(Sname) == PAN::LIBCALL) {
+ LibcallDecls.push_back(Sname);
+ }
+ O << Sname;
+ break;
+ }
case MachineOperand::MO_MachineBasicBlock:
printBasicBlockLabel(MO.getMBB());
return;
default:
- assert(0 && " Operand type not supported.");
+ LLVM_UNREACHABLE(" Operand type not supported.");
}
}
+/// printCCOperand - Print the cond code operand.
+///
void PIC16AsmPrinter::printCCOperand(const MachineInstr *MI, int opNum) {
int CC = (int)MI->getOperand(opNum).getImm();
O << PIC16CondCodeToString((PIC16CC::CondCodes)CC);
}
+/// printLibcallDecls - print the extern declarations for compiler
+/// intrinsics.
+///
+void PIC16AsmPrinter::printLibcallDecls(void) {
+ // If no libcalls used, return.
+ if (LibcallDecls.empty()) return;
+
+ O << TAI->getCommentString() << "External decls for libcalls - BEGIN." <<"\n";
+ // Remove duplicate entries.
+ LibcallDecls.sort();
+ LibcallDecls.unique();
+ for (std::list<const char*>::const_iterator I = LibcallDecls.begin();
+ I != LibcallDecls.end(); I++) {
+ O << TAI->getExternDirective() << *I << "\n";
+ O << TAI->getExternDirective() << PAN::getArgsLabel(*I) << "\n";
+ O << TAI->getExternDirective() << PAN::getRetvalLabel(*I) << "\n";
+ }
+ O << TAI->getCommentString() << "External decls for libcalls - END." <<"\n";
+}
+/// doInitialization - Perfrom Module level initializations here.
+/// One task that we do here is to sectionize all global variables.
+/// The MemSelOptimizer pass depends on the sectionizing.
+///
bool PIC16AsmPrinter::doInitialization (Module &M) {
bool Result = AsmPrinter::doInitialization(M);
+
// FIXME:: This is temporary solution to generate the include file.
// The processor should be passed to llc as in input and the header file
// should be generated accordingly.
- O << "\t#include P16F1937.INC\n";
- MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
- assert(MMI);
- DwarfWriter *DW = getAnalysisIfAvailable<DwarfWriter>();
- assert(DW && "Dwarf Writer is not available");
- DW->BeginModule(&M, MMI, O, this, TAI);
-
- EmitExternsAndGlobals (M);
- EmitInitData (M);
- EmitUnInitData(M);
+ O << "\n\t#include P16F1937.INC\n";
+
+ // Set the section names for all globals.
+ for (Module::global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
+ I->setSection(TAI->SectionForGlobal(I)->getName());
+ }
+
+ DbgInfo.BeginModule(M);
+ EmitFunctionDecls(M);
+ EmitUndefinedVars(M);
+ EmitDefinedVars(M);
+ EmitIData(M);
+ EmitUData(M);
EmitRomData(M);
return Result;
}
-void PIC16AsmPrinter::EmitExternsAndGlobals (Module &M) {
+/// Emit extern decls for functions imported from other modules, and emit
+/// global declarations for function defined in this module and which are
+/// available to other modules.
+///
+void PIC16AsmPrinter::EmitFunctionDecls (Module &M) {
// Emit declarations for external functions.
- O << "section.0" <<"\n";
+ O <<"\n"<<TAI->getCommentString() << "Function Declarations - BEGIN." <<"\n";
for (Module::iterator I = M.begin(), E = M.end(); I != E; I++) {
std::string Name = Mang->getValueName(I);
- if (Name.compare("abort") == 0)
+ if (Name.compare("@abort") == 0)
continue;
- if (I->isDeclaration()) {
- O << "\textern " <<Name << "\n";
- O << "\textern " << Name << ".retval\n";
- O << "\textern " << Name << ".args\n";
- }
- else if (I->hasExternalLinkage()) {
- O << "\tglobal " << Name << "\n";
- O << "\tglobal " << Name << ".retval\n";
- O << "\tglobal " << Name << ".args\n";
- }
- }
-
- // Emit header file to include declaration of library functions
- O << "\t#include C16IntrinsicCalls.INC\n";
-
- // Emit declarations for external globals.
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; I++) {
- // Any variables reaching here with ".auto." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string Name = Mang->getValueName(I);
- if (isLocalName (Name))
+
+ // If it is llvm intrinsic call then don't emit
+ if (Name.find("llvm.") != std::string::npos)
continue;
- if (I->isDeclaration())
- O << "\textern "<< Name << "\n";
- else if (I->hasCommonLinkage() || I->hasExternalLinkage())
- O << "\tglobal "<< Name << "\n";
- }
-}
-
-void PIC16AsmPrinter::EmitInitData (Module &M) {
- SwitchToSection(TAI->getDataSection());
- for (Module::global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) // External global require no code.
+ if (! (I->isDeclaration() || I->hasExternalLinkage()))
continue;
- Constant *C = I->getInitializer();
- const PointerType *PtrTy = I->getType();
- int AddrSpace = PtrTy->getAddressSpace();
+ const char *directive = I->isDeclaration() ? TAI->getExternDirective() :
+ TAI->getGlobalDirective();
+
+ O << directive << Name << "\n";
+ O << directive << PAN::getRetvalLabel(Name) << "\n";
+ O << directive << PAN::getArgsLabel(Name) << "\n";
+ }
- if ((!C->isNullValue()) && (AddrSpace == PIC16ISD::RAM_SPACE)) {
-
- if (EmitSpecialLLVMGlobal(I))
- continue;
+ O << TAI->getCommentString() << "Function Declarations - END." <<"\n";
+}
- // Any variables reaching here with "." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string Name = Mang->getValueName(I);
- if (isLocalName(Name))
- continue;
+// Emit variables imported from other Modules.
+void PIC16AsmPrinter::EmitUndefinedVars (Module &M)
+{
+ std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDecls->Items;
+ if (! Items.size()) return;
- I->setSection(TAI->getDataSection()->getName());
- O << Name;
- EmitGlobalConstant(C, AddrSpace);
- }
+ O << "\n" << TAI->getCommentString() << "Imported Variables - BEGIN" << "\n";
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << TAI->getExternDirective() << Mang->getValueName(Items[j]) << "\n";
}
+ O << TAI->getCommentString() << "Imported Variables - END" << "\n";
}
-void PIC16AsmPrinter::EmitRomData (Module &M)
+// Emit variables defined in this module and are available to other modules.
+void PIC16AsmPrinter::EmitDefinedVars (Module &M)
{
- SwitchToSection(TAI->getReadOnlySection());
- IsRomData = true;
- for (Module::global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) // External global require no code.
- continue;
-
- Constant *C = I->getInitializer();
- const PointerType *PtrTy = I->getType();
- int AddrSpace = PtrTy->getAddressSpace();
- if ((!C->isNullValue()) && (AddrSpace == PIC16ISD::ROM_SPACE)) {
+ std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDefs->Items;
+ if (! Items.size()) return;
- if (EmitSpecialLLVMGlobal(I))
- continue;
-
- // Any variables reaching here with "." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string name = Mang->getValueName(I);
- if (name.find(".") != std::string::npos)
- continue;
-
- I->setSection(TAI->getReadOnlySection()->getName());
- O << name;
- EmitGlobalConstant(C, AddrSpace);
- O << "\n";
- }
+ O << "\n" << TAI->getCommentString() << "Exported Variables - BEGIN" << "\n";
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << TAI->getGlobalDirective() << Mang->getValueName(Items[j]) << "\n";
}
- IsRomData = false;
+ O << TAI->getCommentString() << "Exported Variables - END" << "\n";
}
-void PIC16AsmPrinter::EmitUnInitData (Module &M)
+// Emit initialized data placed in ROM.
+void PIC16AsmPrinter::EmitRomData (Module &M)
{
- SwitchToSection(TAI->getBSSSection_());
- const TargetData *TD = TM.getTargetData();
-
- for (Module::global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) // External global require no code.
- continue;
-
- Constant *C = I->getInitializer();
- if (C->isNullValue()) {
-
- if (EmitSpecialLLVMGlobal(I))
- continue;
-
- // Any variables reaching here with "." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string name = Mang->getValueName(I);
- if (name.find(".") != std::string::npos)
- continue;
-
- I->setSection(TAI->getBSSSection_()->getName());
-
- const Type *Ty = C->getType();
- unsigned Size = TD->getTypePaddedSize(Ty);
-
- O << name << " " <<"RES"<< " " << Size ;
- O << "\n";
+ // Print ROM Data section.
+ std::vector <PIC16Section *>ROSections = PTAI->ROSections;
+ for (unsigned i = 0; i < ROSections.size(); i++) {
+ std::vector<const GlobalVariable*> Items = ROSections[i]->Items;
+ if (! Items.size()) continue;
+ O << "\n";
+ SwitchToSection(PTAI->ROSections[i]->S_);
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ EmitGlobalConstant(C, AddrSpace);
}
}
}
bool PIC16AsmPrinter::doFinalization(Module &M) {
- O << "\t" << "END\n";
+ printLibcallDecls();
+ EmitRemainingAutos();
+ DbgInfo.EndModule(M);
+ O << "\n\t" << "END\n";
bool Result = AsmPrinter::doFinalization(M);
return Result;
}
-void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
+void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
const Function *F = MF.getFunction();
std::string FuncName = Mang->getValueName(F);
- Module *M = const_cast<Module *>(F->getParent());
const TargetData *TD = TM.getTargetData();
- unsigned FrameSize = 0;
// Emit the data section name.
O << "\n";
- std::string SectionName = "fdata." + CurrentFnName + ".# " + "UDATA";
+ const char *SectionName = PAN::getFrameSectionName(CurrentFnName).c_str();
- const Section *fDataSection = TAI->getNamedSection(SectionName.c_str(),
- SectionFlags::Writeable);
- SwitchToSection(fDataSection);
+ const Section *fPDataSection = TAI->getNamedSection(SectionName,
+ SectionFlags::Writeable);
+ SwitchToSection(fPDataSection);
-
// Emit function frame label
- O << CurrentFnName << ".frame:\n";
+ O << PAN::getFrameLabel(CurrentFnName) << ":\n";
const Type *RetType = F->getReturnType();
unsigned RetSize = 0;
if (RetType->getTypeID() != Type::VoidTyID)
- RetSize = TD->getTypePaddedSize(RetType);
+ RetSize = TD->getTypeAllocSize(RetType);
//Emit function return value space
+ // FIXME: Do not emit RetvalLable when retsize is zero. To do this
+ // we will need to avoid printing a global directive for Retval label
+ // in emitExternandGloblas.
if(RetSize > 0)
- O << CurrentFnName << ".retval RES " << RetSize << "\n";
+ O << PAN::getRetvalLabel(CurrentFnName) << " RES " << RetSize << "\n";
else
- O << CurrentFnName << ".retval:\n";
+ O << PAN::getRetvalLabel(CurrentFnName) << ": \n";
// Emit variable to hold the space for function arguments
unsigned ArgSize = 0;
for (Function::const_arg_iterator argi = F->arg_begin(),
arge = F->arg_end(); argi != arge ; ++argi) {
const Type *Ty = argi->getType();
- ArgSize += TD->getTypePaddedSize(Ty);
+ ArgSize += TD->getTypeAllocSize(Ty);
}
- O << CurrentFnName << ".args RES " << ArgSize << "\n";
- // Emit the function variables.
-
- // In PIC16 all the function arguments and local variables are global.
- // Therefore to get the variable belonging to this function entire
- // global list will be traversed and variables belonging to this function
- // will be emitted in the current data section.
- for (Module::global_iterator I = M->global_begin(), E = M->global_end();
- I != E; ++I) {
- std::string VarName = Mang->getValueName(I);
-
- // The variables of a function are of form FuncName.* . If this variable
- // does not belong to this function then continue.
- // Static local varilabes of a function does not have .auto. in their
- // name. They are not printed as part of function data but module
- // level global data.
- if (! isLocalToFunc(FuncName, VarName))
- continue;
-
- I->setSection("fdata." + CurrentFnName + ".#");
- Constant *C = I->getInitializer();
- const Type *Ty = C->getType();
- unsigned Size = TD->getTypePaddedSize(Ty);
- FrameSize += Size;
- // Emit memory reserve directive.
- O << VarName << " RES " << Size << "\n";
- }
+ O << PAN::getArgsLabel(CurrentFnName) << " RES " << ArgSize << "\n";
+ // Emit temporary space
int TempSize = PTLI->GetTmpSize();
if (TempSize > 0 )
- O << CurrentFnName << ".tmp RES " << TempSize <<"\n";
+ O << PAN::getTempdataLabel(CurrentFnName) << " RES " << TempSize <<"\n";
+}
+
+void PIC16AsmPrinter::EmitIData (Module &M) {
+
+ // Print all IDATA sections.
+ std::vector <PIC16Section *>IDATASections = PTAI->IDATASections;
+ for (unsigned i = 0; i < IDATASections.size(); i++) {
+ O << "\n";
+ if (IDATASections[i]->S_->getName().find("llvm.") != std::string::npos)
+ continue;
+ SwitchToSection(IDATASections[i]->S_);
+ std::vector<const GlobalVariable*> Items = IDATASections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ O << Name;
+ EmitGlobalConstant(C, AddrSpace);
+ }
+ }
}
+
+void PIC16AsmPrinter::EmitUData (Module &M) {
+ const TargetData *TD = TM.getTargetData();
+
+ // Print all BSS sections.
+ std::vector <PIC16Section *>BSSSections = PTAI->BSSSections;
+ for (unsigned i = 0; i < BSSSections.size(); i++) {
+ O << "\n";
+ SwitchToSection(BSSSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = BSSSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypeAllocSize(Ty);
+
+ O << Name << " " <<"RES"<< " " << Size ;
+ O << "\n";
+ }
+ }
+}
+
+void PIC16AsmPrinter::EmitAutos (std::string FunctName)
+{
+ // Section names for all globals are already set.
+
+ const TargetData *TD = TM.getTargetData();
+
+ // Now print Autos section for this function.
+ std::string SectionName = PAN::getAutosSectionName(FunctName);
+ std::vector <PIC16Section *>AutosSections = PTAI->AutosSections;
+ for (unsigned i = 0; i < AutosSections.size(); i++) {
+ O << "\n";
+ if (AutosSections[i]->S_->getName() == SectionName) {
+ // Set the printing status to true
+ AutosSections[i]->setPrintedStatus(true);
+ SwitchToSection(AutosSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = AutosSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string VarName = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypeAllocSize(Ty);
+ // Emit memory reserve directive.
+ O << VarName << " RES " << Size << "\n";
+ }
+ break;
+ }
+ }
+}
+
+// Print autos that were not printed during the code printing of functions.
+// As the functions might themselves would have got deleted by the optimizer.
+void PIC16AsmPrinter::EmitRemainingAutos()
+{
+ const TargetData *TD = TM.getTargetData();
+
+ // Now print Autos section for this function.
+ std::vector <PIC16Section *>AutosSections = PTAI->AutosSections;
+ for (unsigned i = 0; i < AutosSections.size(); i++) {
+
+ // if the section is already printed then don't print again
+ if (AutosSections[i]->isPrinted())
+ continue;
+
+ // Set status as printed
+ AutosSections[i]->setPrintedStatus(true);
+
+ O << "\n";
+ SwitchToSection(AutosSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = AutosSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string VarName = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypeAllocSize(Ty);
+ // Emit memory reserve directive.
+ O << VarName << " RES " << Size << "\n";
+ }
+ }
+}
+
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