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Refactor to use Target.getRegisterClasses consistently, which provides

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anonymous regclass definition renaming.

Change the generated code to emit register classes as properly namespace
qualified entities like everything else.

expose the actual class definition as an object, though this isn't quite
usable yet.

llvm-svn: 22920
This commit is contained in:
Chris Lattner 2005-08-19 18:47:59 +00:00
parent 077a4e87c4
commit cef54bfd28
1 changed files with 40 additions and 30 deletions
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70
utils/TableGen/RegisterInfoEmitter.cpp
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@ -61,16 +61,18 @@ void RegisterInfoEmitter::runHeader(std::ostream &OS) {
<< " const unsigned* getCalleeSaveRegs() const;\n"
<< "};\n\n";
std::vector<Record*> RegisterClasses =
Records.getAllDerivedDefinitions("RegisterClass");
const std::vector<CodeGenRegisterClass> &RegisterClasses =
Target.getRegisterClasses();
OS << "namespace " << TargetName << " { // Register classes\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i) {
const std::string &Name = RegisterClasses[i]->getName();
if (Name.size() < 9 || Name[9] != '.') // Ignore anonymous classes
OS << " extern TargetRegisterClass *" << Name << "RegisterClass;\n";
if (!RegisterClasses.empty()) {
OS << "namespace " << RegisterClasses[0].Namespace
<< " { // Register classes\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i) {
const std::string &Name = RegisterClasses[i].getName();
OS << " extern TargetRegisterClass * const "<< Name <<"RegisterClass;\n";
}
OS << "} // end of namespace " << TargetName << "\n\n";
}
OS << "} // end of namespace " << TargetName << "\n\n";
OS << "} // End llvm namespace \n";
}
@ -90,7 +92,6 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
Target.getRegisterClasses();
std::set<Record*> RegistersFound;
std::vector<std::string> RegClassNames;
// Loop over all of the register classes... emitting each one.
OS << "namespace { // Register classes...\n";
@ -102,15 +103,10 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
for (unsigned rc = 0, e = RegisterClasses.size(); rc != e; ++rc) {
const CodeGenRegisterClass &RC = RegisterClasses[rc];
std::string Name = RC.getName();
if (Name.size() > 9 && Name[9] == '.') {
static unsigned AnonCounter = 0;
Name = "AnonRegClass_"+utostr(AnonCounter++);
}
RegClassNames.push_back(Name);
// Emit the register list now...
// Give the register class a legal C name if it's anonymous.
std::string Name = RC.TheDef->getName();
// Emit the register list now.
OS << " // " << Name << " Register Class...\n const unsigned " << Name
<< "[] = {\n ";
for (unsigned i = 0, e = RC.Elements.size(); i != e; ++i) {
@ -130,12 +126,25 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
<< " " << Name << "Class() : TargetRegisterClass("
<< RC.SpillSize/8 << ", " << RC.SpillAlignment/8 << ", " << Name << ", "
<< Name << " + " << RC.Elements.size() << ") {}\n"
<< RC.MethodDefinitions << " } " << Name << "Instance;\n\n";
<< RC.MethodDefinitions << " };\n\n";
}
OS << "} // end anonymous namespace\n\n";
// Now that all of the structs have been emitted, emit the instances.
if (!RegisterClasses.empty()) {
OS << "namespace " << RegisterClasses[0].Namespace
<< " { // Register class instances\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i)
OS << " " << RegisterClasses[i].getName() << "Class\t"
<< RegisterClasses[i].getName() << "RegClassInstance;\n";
OS << "}\n";
}
OS << "\nnamespace {\n";
OS << " const TargetRegisterClass* const RegisterClasses[] = {\n";
for (unsigned i = 0, e = RegClassNames.size(); i != e; ++i)
OS << " &" << RegClassNames[i] << "Instance,\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i)
OS << " &" << getQualifiedName(RegisterClasses[i].TheDef)
<< "RegClassInstance,\n";
OS << " };\n";
// Emit register class aliases...
@ -228,15 +237,16 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
OS << " };\n"; // End of register descriptors...
OS << "}\n\n"; // End of anonymous namespace...
OS << "namespace " << Target.getName() << " { // Register classes\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i) {
const std::string &Name = RegisterClasses[i].getName();
if (Name.size() < 9 || Name[9] != '.') // Ignore anonymous classes
OS << " TargetRegisterClass *" << Name << "RegisterClass = &"
<< Name << "Instance;\n";
if (!RegisterClasses.empty()) {
OS << "namespace " << RegisterClasses[0].Namespace
<< " { // Register classes\n";
for (unsigned i = 0, e = RegisterClasses.size(); i != e; ++i) {
OS << " TargetRegisterClass * const " << RegisterClasses[i].getName()
<< "RegisterClass = &" << getQualifiedName(RegisterClasses[i].TheDef)
<< "RegClassInstance;\n";
}
OS << "} // end of namespace " << RegisterClasses[0].Namespace << "\n\n";
}
OS << "} // end of namespace " << Target.getName() << "\n\n";
std::string ClassName = Target.getName() + "GenRegisterInfo";
@ -245,7 +255,7 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
OS << ClassName << "::" << ClassName
<< "(int CallFrameSetupOpcode, int CallFrameDestroyOpcode)\n"
<< " : MRegisterInfo(RegisterDescriptors, " << Registers.size()+1
<< ", RegisterClasses, RegisterClasses+" << RegClassNames.size() << ",\n "
<< ", RegisterClasses, RegisterClasses+" << RegisterClasses.size() <<",\n "
<< " CallFrameSetupOpcode, CallFrameDestroyOpcode) {}\n\n";
// Emit the getCalleeSaveRegs method...