1 //===- CodeGenWrappers.cpp - Code Generation Class Wrappers -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // These classes wrap target description classes used by the various code
11 // generation TableGen backends. This makes it easier to access the data and
12 // provides a single place that needs to check it for validity. All of these
13 // classes throw exceptions on error conditions.
15 //===----------------------------------------------------------------------===//
17 #include "CodeGenWrappers.h"
20 /// getValueType - Return the MCV::ValueType that the specified TableGen record
22 MVT::ValueType getValueType(Record *Rec) {
23 return (MVT::ValueType)Rec->getValueAsInt("Value");
26 std::string getName(MVT::ValueType T) {
28 case MVT::Other: return "UNKNOWN";
29 case MVT::i1: return "i1";
30 case MVT::i8: return "i8";
31 case MVT::i16: return "i16";
32 case MVT::i32: return "i32";
33 case MVT::i64: return "i64";
34 case MVT::i128: return "i128";
35 case MVT::f32: return "f32";
36 case MVT::f64: return "f64";
37 case MVT::f80: return "f80";
38 case MVT::f128: return "f128";
39 case MVT::isVoid:return "void";
40 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
44 std::string getEnumName(MVT::ValueType T) {
46 case MVT::Other: return "Other";
47 case MVT::i1: return "i1";
48 case MVT::i8: return "i8";
49 case MVT::i16: return "i16";
50 case MVT::i32: return "i32";
51 case MVT::i64: return "i64";
52 case MVT::i128: return "i128";
53 case MVT::f32: return "f32";
54 case MVT::f64: return "f64";
55 case MVT::f80: return "f80";
56 case MVT::f128: return "f128";
57 case MVT::isVoid:return "isVoid";
58 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
63 std::ostream &operator<<(std::ostream &OS, MVT::ValueType T) {
64 return OS << getName(T);
69 /// getTarget - Return the current instance of the Target class.
71 CodeGenTarget::CodeGenTarget() : PointerType(MVT::Other) {
72 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
73 if (Targets.size() != 1)
74 throw std::string("ERROR: Multiple subclasses of Target defined!");
75 TargetRec = Targets[0];
77 // Read in all of the CalleeSavedRegisters...
78 ListInit *LI = TargetRec->getValueAsListInit("CalleeSavedRegisters");
79 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
80 if (DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i)))
81 CalleeSavedRegisters.push_back(DI->getDef());
83 throw "Target: " + TargetRec->getName() +
84 " expected register definition in CalleeSavedRegisters list!";
86 PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
90 const std::string &CodeGenTarget::getName() const {
91 return TargetRec->getName();
94 Record *CodeGenTarget::getInstructionSet() const {
95 return TargetRec->getValueAsDef("InstructionSet");