#include "llvm/Function.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/Support/FormattedStream.h"
#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"
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;
// Get the mangled name.
const Function *F = MF.getFunction();
- CurrentFnName = Mang->getValueName(F);
+ CurrentFnName = Mang->getMangledName(F);
- // Emit the function variables.
- emitFunctionData(MF);
+ // 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);
- O << "\n";
// Start the Code Section.
- SwitchToSection (fCodeSection);
+ O << "\n";
+ SwitchToSection(fCodeSection);
// Emit the frame address of the function at the beginning of code.
O << "\tretlw low(" << 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';
}
- // For emitting line directives, we need to keep track of the current
- // source line. When it changes then only emit the line directive.
- unsigned CurLine = 0;
+ // 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()) {
- unsigned line = MF.getDebugLocTuple(DL).Line;
- if (line != CurLine) {
- O << "\t.line " << line << "\n";
- CurLine = line;
- }
+ if (!DL.isUnknown() && DL != CurDL) {
+ DbgInfo.ChangeDebugLoc(MF, DL);
+ CurDL = DL;
}
// Print the assembly for the instruction.
printMachineInstruction(II);
}
}
+
+ // Emit function end debug directives.
+ DbgInfo.EndFunction(MF);
+
return false; // we didn't modify anything.
}
/// using the given target machine description. This should work
/// regardless of whether the function is in SSA form.
///
-FunctionPass *llvm::createPIC16CodePrinterPass(raw_ostream &o,
- PIC16TargetMachine &tm,
- CodeGenOpt::Level OptLevel,
+FunctionPass *llvm::createPIC16CodePrinterPass(formatted_raw_ostream &o,
+ TargetMachine &tm,
bool verbose) {
- return new PIC16AsmPrinter(o, tm, tm.getTargetAsmInfo(), OptLevel, verbose);
+ return new PIC16AsmPrinter(o, tm, tm.getTargetAsmInfo(), verbose);
}
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: {
- O << Mang->getValueName(MO.getGlobal());
+ O << Mang->getMangledName(MO.getGlobal());
break;
}
case MachineOperand::MO_ExternalSymbol: {
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 - END." <<"\n";
}
-bool PIC16AsmPrinter::doInitialization (Module &M) {
+/// 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);
+ 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->setSection(TAI->SectionForGlobal(I)->getName());
}
+ DbgInfo.BeginModule(M);
EmitFunctionDecls(M);
EmitUndefinedVars(M);
EmitDefinedVars(M);
EmitIData(M);
EmitUData(M);
EmitRomData(M);
- EmitAutos(M);
return Result;
}
-// 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 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 << TAI->getCommentString() << "Function Declarations - BEGIN." <<"\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 (I->isIntrinsic())
+ continue;
+
+ std::string Name = Mang->getMangledName(I);
if (Name.compare("@abort") == 0)
continue;
- // If it is llvm intrinsic call then don't emit
- if (Name.find("llvm.") != std::string::npos)
- continue;
-
- if (! (I->isDeclaration() || I->hasExternalLinkage()))
+ if (!I->isDeclaration() && !I->hasExternalLinkage())
continue;
const char *directive = I->isDeclaration() ? TAI->getExternDirective() :
}
// Emit variables imported from other Modules.
-void PIC16AsmPrinter::EmitUndefinedVars (Module &M)
-{
+void PIC16AsmPrinter::EmitUndefinedVars(Module &M) {
std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDecls->Items;
- if (! Items.size()) return;
+ if (!Items.size()) return;
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->getExternDirective() << Mang->getMangledName(Items[j]) << "\n";
}
O << TAI->getCommentString() << "Imported Variables - END" << "\n";
}
// Emit variables defined in this module and are available to other modules.
-void PIC16AsmPrinter::EmitDefinedVars (Module &M)
-{
+void PIC16AsmPrinter::EmitDefinedVars(Module &M) {
std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDefs->Items;
- if (! Items.size()) return;
+ if (!Items.size()) return;
- O << "\n" << TAI->getCommentString() << "Exported Variables - BEGIN" << "\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";
+ O << TAI->getGlobalDirective() << Mang->getMangledName(Items[j]) << "\n";
}
O << TAI->getCommentString() << "Exported Variables - END" << "\n";
}
// Emit initialized data placed in ROM.
-void PIC16AsmPrinter::EmitRomData (Module &M)
-{
-
- std::vector<const GlobalVariable*> Items = PTAI->ROSection->Items;
- if (! Items.size()) return;
-
- // Print ROData ection.
- O << "\n";
- SwitchToSection(PTAI->ROSection->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);
+void PIC16AsmPrinter::EmitRomData(Module &M) {
+ // Print ROM Data section.
+ const std::vector<PIC16Section*> &ROSections = PTAI->ROSections;
+ for (unsigned i = 0; i < ROSections.size(); i++) {
+ const 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->getMangledName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ EmitGlobalConstant(C, AddrSpace);
+ }
}
}
bool PIC16AsmPrinter::doFinalization(Module &M) {
printLibcallDecls();
- EmitVarDebugInfo(M);
- O << "\t" << ".EOF\n";
- O << "\t" << "END\n";
- bool Result = AsmPrinter::doFinalization(M);
- return Result;
+ EmitRemainingAutos();
+ DbgInfo.EndModule(M);
+ O << "\n\t" << "END\n";
+ return AsmPrinter::doFinalization(M);
}
-void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
+void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
const Function *F = MF.getFunction();
- std::string FuncName = Mang->getValueName(F);
+ std::string FuncName = Mang->getMangledName(F);
const TargetData *TD = TM.getTargetData();
// Emit the data section name.
O << "\n";
// Emit temporary space
int TempSize = PTLI->GetTmpSize();
- if (TempSize > 0 )
- O << PAN::getTempdataLabel(CurrentFnName) << " RES " << TempSize <<"\n";
+ if (TempSize > 0)
+ O << PAN::getTempdataLabel(CurrentFnName) << " RES " << TempSize << '\n';
}
-void PIC16AsmPrinter::EmitIData (Module &M) {
+void PIC16AsmPrinter::EmitIData(Module &M) {
// Print all IDATA sections.
- std::vector <PIC16Section *>IDATASections = PTAI->IDATASections;
+ const 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]);
+ std::string Name = Mang->getMangledName(Items[j]);
Constant *C = Items[j]->getInitializer();
int AddrSpace = Items[j]->getType()->getAddressSpace();
O << Name;
}
}
-void PIC16AsmPrinter::EmitUData (Module &M) {
+void PIC16AsmPrinter::EmitUData(Module &M) {
const TargetData *TD = TM.getTargetData();
// Print all BSS sections.
- std::vector <PIC16Section *>BSSSections = PTAI->BSSSections;
+ const 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]);
+ std::string Name = Mang->getMangledName(Items[j]);
Constant *C = Items[j]->getInitializer();
const Type *Ty = C->getType();
unsigned Size = TD->getTypeAllocSize(Ty);
- O << Name << " " <<"RES"<< " " << Size ;
- O << "\n";
+ O << Name << " RES " << Size << "\n";
}
}
}
-void PIC16AsmPrinter::EmitAutos (Module &M)
-{
+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);
+ const 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_);
+ const std::vector<const GlobalVariable*> &Items = AutosSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string VarName = Mang->getMangledName(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 all Autos sections.
+ // 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;
+ const std::vector<const GlobalVariable*> &Items = AutosSections[i]->Items;
for (unsigned j = 0; j < Items.size(); j++) {
- std::string VarName = Mang->getValueName(Items[j]);
+ std::string VarName = Mang->getMangledName(Items[j]);
Constant *C = Items[j]->getInitializer();
const Type *Ty = C->getType();
unsigned Size = TD->getTypeAllocSize(Ty);
}
}
-void PIC16AsmPrinter::EmitVarDebugInfo(Module &M) {
- GlobalVariable *Root = M.getGlobalVariable("llvm.dbg.global_variables");
- if (!Root)
- return;
-
- O << TAI->getCommentString() << " Debug Information:";
- Constant *RootC = cast<Constant>(*Root->use_begin());
- for (Value::use_iterator UI = RootC->use_begin(), UE = Root->use_end();
- UI != UE; ++UI) {
- for (Value::use_iterator UUI = UI->use_begin(), UUE = UI->use_end();
- UUI != UUE; ++UUI) {
- DIGlobalVariable DIGV(cast<GlobalVariable>(*UUI));
- DIType Ty = DIGV.getType();
- unsigned short TypeNo = 0;
- bool HasAux = false;
- int Aux[20] = { 0 };
- std::string TypeName = "";
- std::string VarName = TAI->getGlobalPrefix()+DIGV.getGlobal()->getName();
- DbgInfo.PopulateDebugInfo(Ty, TypeNo, HasAux, Aux, TypeName);
- // Emit debug info only if type information is availaible.
- if (TypeNo != PIC16Dbg::T_NULL) {
- O << "\n\t.type " << VarName << ", " << TypeNo;
- short ClassNo = DbgInfo.getClass(DIGV);
- O << "\n\t.class " << VarName << ", " << ClassNo;
- if (HasAux) {
- if (TypeName != "") {
- // Emit debug info for structure and union objects after
- // .dim directive supports structure/union tag name in aux entry.
- /* O << "\n\t.dim " << VarName << ", 1," << TypeName;
- for (int i = 0; i<20; i++)
- O << "," << Aux[i];*/
- }
- else {
- O << "\n\t.dim " << VarName << ", 1" ;
- for (int i = 0; i<20; i++)
- O << "," << Aux[i];
- }
- }
- }
- }
- }
- O << "\n";
-}
-
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