1 //===- CodeGenTarget.cpp - CodeGen Target Class Wrapper ---------*- 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 // This class 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 "CodeGenTarget.h"
21 /// getValueType - Return the MCV::ValueType that the specified TableGen record
23 MVT::ValueType llvm::getValueType(Record *Rec) {
24 return (MVT::ValueType)Rec->getValueAsInt("Value");
27 std::string llvm::getName(MVT::ValueType T) {
29 case MVT::Other: return "UNKNOWN";
30 case MVT::i1: return "i1";
31 case MVT::i8: return "i8";
32 case MVT::i16: return "i16";
33 case MVT::i32: return "i32";
34 case MVT::i64: return "i64";
35 case MVT::i128: return "i128";
36 case MVT::f32: return "f32";
37 case MVT::f64: return "f64";
38 case MVT::f80: return "f80";
39 case MVT::f128: return "f128";
40 case MVT::isVoid:return "void";
41 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
45 std::string llvm::getEnumName(MVT::ValueType T) {
47 case MVT::Other: return "Other";
48 case MVT::i1: return "i1";
49 case MVT::i8: return "i8";
50 case MVT::i16: return "i16";
51 case MVT::i32: return "i32";
52 case MVT::i64: return "i64";
53 case MVT::i128: return "i128";
54 case MVT::f32: return "f32";
55 case MVT::f64: return "f64";
56 case MVT::f80: return "f80";
57 case MVT::f128: return "f128";
58 case MVT::isVoid:return "isVoid";
59 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
64 std::ostream &llvm::operator<<(std::ostream &OS, MVT::ValueType T) {
65 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() == 0)
74 throw std::string("ERROR: No 'Target' subclasses defined!");
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");