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Run through the list of globals once and sectionize all types of globlas includeing declarations. Later emit them from their section lists.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71661 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -133,7 +133,7 @@ void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
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// If its a libcall name, record it to decls section.
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if (PAN::getSymbolTag(Sname) == PAN::LIBCALL) {
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Decls.push_back(Sname);
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LibcallDecls.push_back(Sname);
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}
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O << Sname;
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@ -153,16 +153,16 @@ void PIC16AsmPrinter::printCCOperand(const MachineInstr *MI, int opNum) {
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O << PIC16CondCodeToString((PIC16CC::CondCodes)CC);
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}
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void PIC16AsmPrinter::printDecls(void) {
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void PIC16AsmPrinter::printLibcallDecls(void) {
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// If no libcalls used, return.
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if (Decls.empty()) return;
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if (LibcallDecls.empty()) return;
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O << TAI->getCommentString() << "External decls for libcalls - BEGIN." <<"\n";
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// Remove duplicate entries.
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Decls.sort();
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Decls.unique();
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for (std::list<const char*>::const_iterator I = Decls.begin();
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I != Decls.end(); I++) {
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LibcallDecls.sort();
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LibcallDecls.unique();
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for (std::list<const char*>::const_iterator I = LibcallDecls.begin();
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I != LibcallDecls.end(); I++) {
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O << TAI->getExternDirective() << *I << "\n";
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O << TAI->getExternDirective() << PAN::getArgsLabel(*I) << "\n";
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O << TAI->getExternDirective() << PAN::getRetvalLabel(*I) << "\n";
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@ -188,17 +188,22 @@ bool PIC16AsmPrinter::doInitialization (Module &M) {
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I->setSection(TAI->SectionForGlobal(I)->getName());
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}
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EmitExternsAndGlobals (M);
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EmitFunctionDecls(M);
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EmitUndefinedVars(M);
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EmitDefinedVars(M);
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EmitIData(M);
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EmitUData(M);
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EmitAutos(M);
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EmitRomData(M);
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EmitAutos(M);
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return Result;
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}
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void PIC16AsmPrinter::EmitExternsAndGlobals (Module &M) {
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// Emit extern decls for functions imported from other modules, and emit
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// global declarations for function defined in this module and which are
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// available to other modules.
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void PIC16AsmPrinter::EmitFunctionDecls (Module &M) {
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// Emit declarations for external functions.
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O << TAI->getCommentString() << "External defs and decls - BEGIN." <<"\n";
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O << TAI->getCommentString() << "Function Declarations - BEGIN." <<"\n";
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for (Module::iterator I = M.begin(), E = M.end(); I != E; I++) {
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std::string Name = Mang->getValueName(I);
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if (Name.compare("@abort") == 0)
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@ -219,33 +224,38 @@ void PIC16AsmPrinter::EmitExternsAndGlobals (Module &M) {
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O << directive << PAN::getArgsLabel(Name) << "\n";
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}
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// Emit header file to include declaration of library functions
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// FIXME: find out libcall names.
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// O << "\t#include C16IntrinsicCalls.INC\n";
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// Emit declarations for external variable declarations and definitions.
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for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
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I != E; I++) {
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// Any variables reaching here with ".auto." in its name is a local scope
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// variable and should not be printed in global data section.
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std::string Name = Mang->getValueName(I);
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if (PAN::isLocalName(Name))
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continue;
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if (!(I->isDeclaration() || I->hasExternalLinkage() ||
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I->hasCommonLinkage()))
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continue;
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const char *directive = I->isDeclaration() ? TAI->getExternDirective() :
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TAI->getGlobalDirective();
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O << directive << Name << "\n";
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}
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O << TAI->getCommentString() << "External defs and decls - END." <<"\n";
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O << TAI->getCommentString() << "Function Declarations - END." <<"\n";
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}
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// Emit variables imported from other Modules.
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void PIC16AsmPrinter::EmitUndefinedVars (Module &M)
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{
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std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDecls->Items;
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if (! Items.size()) return;
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O << "\n" << TAI->getCommentString() << "Imported Variables - BEGIN" << "\n";
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for (unsigned j = 0; j < Items.size(); j++) {
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O << TAI->getExternDirective() << Mang->getValueName(Items[j]) << "\n";
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}
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O << TAI->getCommentString() << "Imported Variables - END" << "\n";
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}
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// Emit variables defined in this module and are available to other modules.
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void PIC16AsmPrinter::EmitDefinedVars (Module &M)
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{
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std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDefs->Items;
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if (! Items.size()) return;
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O << "\n" << TAI->getCommentString() << "Exported Variables - BEGIN" << "\n";
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for (unsigned j = 0; j < Items.size(); j++) {
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O << TAI->getGlobalDirective() << Mang->getValueName(Items[j]) << "\n";
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}
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O << TAI->getCommentString() << "Exported Variables - END" << "\n";
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}
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// Emit initialized data placed in ROM.
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void PIC16AsmPrinter::EmitRomData (Module &M)
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{
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const PIC16TargetAsmInfo *PTAI = static_cast<const PIC16TargetAsmInfo *>(TAI);
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std::vector<const GlobalVariable*> Items = PTAI->ROSection->Items;
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if (! Items.size()) return;
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@ -262,7 +272,7 @@ void PIC16AsmPrinter::EmitRomData (Module &M)
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}
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bool PIC16AsmPrinter::doFinalization(Module &M) {
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printDecls();
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printLibcallDecls();
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O << "\t" << "END\n";
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bool Result = AsmPrinter::doFinalization(M);
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return Result;
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@ -314,7 +324,6 @@ void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
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}
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void PIC16AsmPrinter::EmitIData (Module &M) {
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const PIC16TargetAsmInfo *PTAI = static_cast<const PIC16TargetAsmInfo *>(TAI);
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// Print all IDATA sections.
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std::vector <PIC16Section *>IDATASections = PTAI->IDATASections;
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@ -333,7 +342,6 @@ void PIC16AsmPrinter::EmitIData (Module &M) {
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}
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void PIC16AsmPrinter::EmitUData (Module &M) {
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const PIC16TargetAsmInfo *PTAI = static_cast<const PIC16TargetAsmInfo *>(TAI);
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const TargetData *TD = TM.getTargetData();
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// Print all BSS sections.
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@ -358,7 +366,6 @@ void PIC16AsmPrinter::EmitAutos (Module &M)
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{
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// Section names for all globals are already set.
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const PIC16TargetAsmInfo *PTAI = static_cast<const PIC16TargetAsmInfo *>(TAI);
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const TargetData *TD = TM.getTargetData();
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// Now print all Autos sections.
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@ -17,6 +17,7 @@
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#include "PIC16.h"
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#include "PIC16TargetMachine.h"
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#include "PIC16TargetAsmInfo.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Target/TargetAsmInfo.h"
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@ -31,6 +32,7 @@ namespace llvm {
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bool V)
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: AsmPrinter(O, TM, T, OL, V) {
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PTLI = TM.getTargetLowering();
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PTAI = static_cast<const PIC16TargetAsmInfo *> (T);
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}
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private :
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virtual const char *getPassName() const {
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@ -42,13 +44,15 @@ namespace llvm {
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void printCCOperand(const MachineInstr *MI, int opNum);
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bool printInstruction(const MachineInstr *MI); // definition autogenerated.
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bool printMachineInstruction(const MachineInstr *MI);
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void EmitExternsAndGlobals (Module &M);
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void EmitFunctionDecls (Module &M);
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void EmitUndefinedVars (Module &M);
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void EmitDefinedVars (Module &M);
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void EmitIData (Module &M);
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void EmitUData (Module &M);
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void EmitAutos (Module &M);
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void EmitRomData (Module &M);
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void emitFunctionData(MachineFunction &MF);
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void printDecls(void);
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void printLibcallDecls(void);
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protected:
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bool doInitialization(Module &M);
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@ -56,7 +60,8 @@ namespace llvm {
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private:
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PIC16TargetLowering *PTLI;
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std::list<const char *> Decls; // List of extern decls.
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const PIC16TargetAsmInfo *PTAI;
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std::list<const char *> LibcallDecls; // List of extern decls.
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};
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} // end of namespace
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@ -45,6 +45,8 @@ PIC16TargetAsmInfo(const PIC16TargetMachine &TM)
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// in BeginModule, and gpasm cribbs for that .text symbol.
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TextSection = getUnnamedSection("", SectionFlags::Code);
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ROSection = new PIC16Section(getReadOnlySection());
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ExternalVarDecls = new PIC16Section(getNamedSection("ExternalVarDecls"));
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ExternalVarDefs = new PIC16Section(getNamedSection("ExternalVarDefs"));
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}
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const char *PIC16TargetAsmInfo::getRomDirective(unsigned size) const
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@ -196,9 +198,18 @@ PIC16TargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV1) const {
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// We select the section based on the initializer here, so it really
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// has to be a GlobalVariable.
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const GlobalVariable *GV = dyn_cast<GlobalVariable>(GV1);
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if (!GV1 || ! GV->hasInitializer())
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if (!GV)
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return TargetAsmInfo::SelectSectionForGlobal(GV1);
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// Record Exteranl Var Decls.
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if (GV->isDeclaration()) {
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ExternalVarDecls->Items.push_back(GV);
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return ExternalVarDecls->S_;
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}
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assert (GV->hasInitializer() && "A def without initializer?");
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// First, if this is an automatic variable for a function, get the section
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// name for it and return.
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const std::string name = GV->getName();
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@ -206,6 +217,11 @@ PIC16TargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV1) const {
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return getSectionForAuto(GV);
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}
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// Record Exteranl Var Defs.
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if (GV->hasExternalLinkage() || GV->hasCommonLinkage()) {
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ExternalVarDefs->Items.push_back(GV);
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}
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// See if this is an uninitialized global.
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const Constant *C = GV->getInitializer();
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if (C->isNullValue())
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@ -240,4 +256,6 @@ PIC16TargetAsmInfo::~PIC16TargetAsmInfo() {
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}
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delete ROSection;
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delete ExternalVarDecls;
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delete ExternalVarDefs;
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}
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@ -45,6 +45,8 @@ namespace llvm {
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mutable std::vector<PIC16Section *> IDATASections;
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mutable std::vector<PIC16Section *> AutosSections;
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mutable PIC16Section *ROSection;
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mutable PIC16Section *ExternalVarDecls;
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mutable PIC16Section *ExternalVarDefs;
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virtual ~PIC16TargetAsmInfo();
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private:
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@ -57,6 +59,8 @@ namespace llvm {
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const Section *getIDATASectionForGlobal(const GlobalVariable *GV) const;
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const Section *getSectionForAuto(const GlobalVariable *GV) const;
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virtual const Section *SelectSectionForGlobal(const GlobalValue *GV) const;
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public:
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void SetSectionForGVs(Module &M);
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std::vector<PIC16Section *> getBSSSections() const {
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