1 //===- CodeGenWrappers.cpp - Code Generation Class Wrappers -----*- C++ -*-===//
3 // These classes wrap target description classes used by the various code
4 // generation TableGen backends. This makes it easier to access the data and
5 // provides a single place that needs to check it for validity. All of these
6 // classes throw exceptions on error conditions.
8 //===----------------------------------------------------------------------===//
10 #include "CodeGenWrappers.h"
13 /// getValueType - Return the MCV::ValueType that the specified TableGen record
15 MVT::ValueType getValueType(Record *Rec) {
16 return (MVT::ValueType)Rec->getValueAsInt("Value");
19 std::string getName(MVT::ValueType T) {
21 case MVT::Other: return "UNKNOWN";
22 case MVT::i1: return "i1";
23 case MVT::i8: return "i8";
24 case MVT::i16: return "i16";
25 case MVT::i32: return "i32";
26 case MVT::i64: return "i64";
27 case MVT::i128: return "i128";
28 case MVT::f32: return "f32";
29 case MVT::f64: return "f64";
30 case MVT::f80: return "f80";
31 case MVT::f128: return "f128";
32 case MVT::isVoid:return "void";
33 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
38 std::ostream &operator<<(std::ostream &OS, MVT::ValueType T) {
39 return OS << getName(T);
44 /// getTarget - Return the current instance of the Target class.
46 CodeGenTarget::CodeGenTarget() {
47 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
48 if (Targets.size() != 1)
49 throw std::string("ERROR: Multiple subclasses of Target defined!");
50 TargetRec = Targets[0];
52 // Read in all of the CalleeSavedRegisters...
53 ListInit *LI = TargetRec->getValueAsListInit("CalleeSavedRegisters");
54 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
55 if (DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i)))
56 CalleeSavedRegisters.push_back(DI->getDef());
58 throw "Target: " + TargetRec->getName() +
59 " expected register definition in CalleeSavedRegisters list!";
61 PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
65 const std::string &CodeGenTarget::getName() const {
66 return TargetRec->getName();
69 Record *CodeGenTarget::getInstructionSet() const {
70 return TargetRec->getValueAsDef("InstructionSet");