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::ostream &operator<<(std::ostream &OS, MVT::ValueType T) {
21 case MVT::Other: return OS << "UNKNOWN";
22 case MVT::i1: return OS << "i1";
23 case MVT::i8: return OS << "i8";
24 case MVT::i16: return OS << "i16";
25 case MVT::i32: return OS << "i32";
26 case MVT::i64: return OS << "i64";
27 case MVT::i128: return OS << "i128";
28 case MVT::f32: return OS << "f32";
29 case MVT::f64: return OS << "f64";
30 case MVT::f80: return OS << "f80";
31 case MVT::f128: return OS << "f128";
32 case MVT::isVoid:return OS << "void";
39 /// getTarget - Return the current instance of the Target class.
41 CodeGenTarget::CodeGenTarget() {
42 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
43 if (Targets.size() != 1)
44 throw std::string("ERROR: Multiple subclasses of Target defined!");
45 TargetRec = Targets[0];
47 // Read in all of the CalleeSavedRegisters...
48 ListInit *LI = TargetRec->getValueAsListInit("CalleeSavedRegisters");
49 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
50 if (DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i)))
51 CalleeSavedRegisters.push_back(DI->getDef());
53 throw "Target: " + TargetRec->getName() +
54 " expected register definition in CalleeSavedRegisters list!";
56 PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
60 const std::string &CodeGenTarget::getName() const {
61 return TargetRec->getName();
64 Record *CodeGenTarget::getInstructionSet() const {
65 return TargetRec->getValueAsDef("InstructionSet");