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"
22 /// getValueType - Return the MCV::ValueType that the specified TableGen record
24 MVT::ValueType getValueType(Record *Rec) {
25 return (MVT::ValueType)Rec->getValueAsInt("Value");
28 std::string getName(MVT::ValueType T) {
30 case MVT::Other: return "UNKNOWN";
31 case MVT::i1: return "i1";
32 case MVT::i8: return "i8";
33 case MVT::i16: return "i16";
34 case MVT::i32: return "i32";
35 case MVT::i64: return "i64";
36 case MVT::i128: return "i128";
37 case MVT::f32: return "f32";
38 case MVT::f64: return "f64";
39 case MVT::f80: return "f80";
40 case MVT::f128: return "f128";
41 case MVT::isVoid:return "void";
42 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
46 std::string getEnumName(MVT::ValueType T) {
48 case MVT::Other: return "Other";
49 case MVT::i1: return "i1";
50 case MVT::i8: return "i8";
51 case MVT::i16: return "i16";
52 case MVT::i32: return "i32";
53 case MVT::i64: return "i64";
54 case MVT::i128: return "i128";
55 case MVT::f32: return "f32";
56 case MVT::f64: return "f64";
57 case MVT::f80: return "f80";
58 case MVT::f128: return "f128";
59 case MVT::isVoid:return "isVoid";
60 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
65 std::ostream &operator<<(std::ostream &OS, MVT::ValueType T) {
66 return OS << getName(T);
71 /// getTarget - Return the current instance of the Target class.
73 CodeGenTarget::CodeGenTarget() : PointerType(MVT::Other) {
74 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
75 if (Targets.size() != 1)
76 throw std::string("ERROR: Multiple subclasses of Target defined!");
77 TargetRec = Targets[0];
79 // Read in all of the CalleeSavedRegisters...
80 ListInit *LI = TargetRec->getValueAsListInit("CalleeSavedRegisters");
81 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
82 if (DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i)))
83 CalleeSavedRegisters.push_back(DI->getDef());
85 throw "Target: " + TargetRec->getName() +
86 " expected register definition in CalleeSavedRegisters list!";
88 PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
92 const std::string &CodeGenTarget::getName() const {
93 return TargetRec->getName();
96 Record *CodeGenTarget::getInstructionSet() const {
97 return TargetRec->getValueAsDef("InstructionSet");
100 } // End llvm namespace