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Start parsing register classes into a more structured form

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15961 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-08-21 04:05:00 +00:00
parent 7a680c6064
commit 056afeface
4 changed files with 61 additions and 19 deletions
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32
utils/TableGen/CodeGenTarget.cpp
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@@ -121,6 +121,38 @@ const std::string &CodeGenRegister::getName() const {
return TheDef->getName();
}
void CodeGenTarget::ReadRegisterClasses() const {
std::vector<Record*> RegClasses =
Records.getAllDerivedDefinitions("RegisterClass");
if (RegClasses.empty())
throw std::string("No 'RegisterClass' subclasses defined!");
RegisterClasses.reserve(RegClasses.size());
RegisterClasses.assign(RegClasses.begin(), RegClasses.end());
}
CodeGenRegisterClass::CodeGenRegisterClass(Record *R) : TheDef(R) {
SpillSize = R->getValueAsInt("Size");
SpillAlignment = R->getValueAsInt("Alignment");
ListInit *RegList = R->getValueAsListInit("MemberList");
for (unsigned i = 0, e = RegList->getSize(); i != e; ++i) {
DefInit *RegDef = dynamic_cast<DefInit*>(RegList->getElement(i));
if (!RegDef) throw "Register class member is not a record!";
Record *Reg = RegDef->getDef();
if (!Reg->isSubClassOf("Register"))
throw "Register Class member '" + Reg->getName() +
"' does not derive from the Register class!";
Elements.push_back(Reg);
}
}
const std::string &CodeGenRegisterClass::getName() const {
return TheDef->getName();
}
void CodeGenTarget::ReadInstructions() const {
std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");