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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
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//===- CodeGenWrappers.cpp - Code Generation Class Wrappers -----*- C++ -*-===//
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//
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// These classes wrap target description classes used by the various code
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// generation TableGen backends. This makes it easier to access the data and
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// provides a single place that needs to check it for validity. All of these
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// classes throw exceptions on error conditions.
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//
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//===----------------------------------------------------------------------===//
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#include "CodeGenWrappers.h"
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#include "Record.h"
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/// getValueType - Return the MCV::ValueType that the specified TableGen record
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/// corresponds to.
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MVT::ValueType getValueType(Record *Rec) {
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return (MVT::ValueType)Rec->getValueAsInt("Value");
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}
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std::ostream &operator<<(std::ostream &OS, MVT::ValueType T) {
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switch (T) {
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case MVT::Other: return OS << "UNKNOWN";
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case MVT::i1: return OS << "i1";
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case MVT::i8: return OS << "i8";
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case MVT::i16: return OS << "i16";
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case MVT::i32: return OS << "i32";
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case MVT::i64: return OS << "i64";
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case MVT::i128: return OS << "i128";
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case MVT::f32: return OS << "f32";
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case MVT::f64: return OS << "f64";
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case MVT::f80: return OS << "f80";
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case MVT::f128: return OS << "f128";
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case MVT::isVoid:return OS << "void";
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}
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return OS;
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}
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/// getTarget - Return the current instance of the Target class.
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///
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CodeGenTarget::CodeGenTarget() {
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std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
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if (Targets.size() != 1)
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throw std::string("ERROR: Multiple subclasses of Target defined!");
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TargetRec = Targets[0];
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// Read in all of the CalleeSavedRegisters...
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ListInit *LI = TargetRec->getValueAsListInit("CalleeSavedRegisters");
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for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
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if (DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i)))
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CalleeSavedRegisters.push_back(DI->getDef());
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else
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throw "Target: " + TargetRec->getName() +
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" expected register definition in CalleeSavedRegisters list!";
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PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
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}
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const std::string &CodeGenTarget::getName() const {
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return TargetRec->getName();
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}
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Record *CodeGenTarget::getInstructionSet() const {
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return TargetRec->getValueAsDef("InstructionSet");
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}
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