1 //===- Attributes.cpp - Generate attributes -------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/Support/MemoryBuffer.h"
11 #include "llvm/TableGen/Record.h"
12 #include <algorithm>
13 #include <string>
14 #include <vector>
15 using namespace llvm;
16
17 #define DEBUG_TYPE "attr-enum"
18
19 namespace {
20
21 class Attributes {
22 public:
Attributes(RecordKeeper & R)23 Attributes(RecordKeeper &R) : Records(R) {}
24 void emit(raw_ostream &OS);
25
26 private:
27 void emitTargetIndependentEnums(raw_ostream &OS);
28 void emitConversionFn(raw_ostream &OS);
29 void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
30
31 void printEnumAttrClasses(raw_ostream &OS,
32 const std::vector<Record *> &Records);
33 void printStrBoolAttrClasses(raw_ostream &OS,
34 const std::vector<Record *> &Records);
35
36 RecordKeeper &Records;
37 };
38
39 } // End anonymous namespace.
40
emitTargetIndependentEnums(raw_ostream & OS)41 void Attributes::emitTargetIndependentEnums(raw_ostream &OS) {
42 OS << "#ifdef GET_ATTR_ENUM\n";
43 OS << "#undef GET_ATTR_ENUM\n";
44
45 std::vector<Record*> Attrs =
46 Records.getAllDerivedDefinitions("EnumAttr");
47
48 for (auto A : Attrs)
49 OS << A->getName() << ",\n";
50
51 OS << "#endif\n";
52 }
53
emitConversionFn(raw_ostream & OS)54 void Attributes::emitConversionFn(raw_ostream &OS) {
55 OS << "#ifdef GET_ATTR_KIND_FROM_NAME\n";
56 OS << "#undef GET_ATTR_KIND_FROM_NAME\n";
57
58 std::vector<Record*> Attrs =
59 Records.getAllDerivedDefinitions("EnumAttr");
60
61 OS << "static Attribute::AttrKind getAttrKindFromName(StringRef AttrName) {\n";
62 OS << " return StringSwitch<Attribute::AttrKind>(AttrName)\n";
63
64 for (auto A : Attrs) {
65 OS << " .Case(\"" << A->getValueAsString("AttrString");
66 OS << "\", Attribute::" << A->getName() << ")\n";
67 }
68
69 OS << " .Default(Attribute::None);\n";
70 OS << "}\n\n";
71
72 OS << "#endif\n";
73 }
74
emitFnAttrCompatCheck(raw_ostream & OS,bool IsStringAttr)75 void Attributes::emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr) {
76 OS << "#ifdef GET_ATTR_COMPAT_FUNC\n";
77 OS << "#undef GET_ATTR_COMPAT_FUNC\n";
78
79 OS << "struct EnumAttr {\n";
80 OS << " static bool isSet(const Function &Fn,\n";
81 OS << " Attribute::AttrKind Kind) {\n";
82 OS << " return Fn.hasFnAttribute(Kind);\n";
83 OS << " }\n\n";
84 OS << " static void set(Function &Fn,\n";
85 OS << " Attribute::AttrKind Kind, bool Val) {\n";
86 OS << " if (Val)\n";
87 OS << " Fn.addFnAttr(Kind);\n";
88 OS << " else\n";
89 OS << " Fn.removeFnAttr(Kind);\n";
90 OS << " }\n";
91 OS << "};\n\n";
92
93 OS << "struct StrBoolAttr {\n";
94 OS << " static bool isSet(const Function &Fn,\n";
95 OS << " StringRef Kind) {\n";
96 OS << " auto A = Fn.getFnAttribute(Kind);\n";
97 OS << " return A.getValueAsString().equals(\"true\");\n";
98 OS << " }\n\n";
99 OS << " static void set(Function &Fn,\n";
100 OS << " StringRef Kind, bool Val) {\n";
101 OS << " Fn.addFnAttr(Kind, Val ? \"true\" : \"false\");\n";
102 OS << " }\n";
103 OS << "};\n\n";
104
105 printEnumAttrClasses(OS ,Records.getAllDerivedDefinitions("EnumAttr"));
106 printStrBoolAttrClasses(OS , Records.getAllDerivedDefinitions("StrBoolAttr"));
107
108 OS << "static inline bool hasCompatibleFnAttrs(const Function &Caller,\n"
109 << " const Function &Callee) {\n";
110 OS << " bool Ret = true;\n\n";
111
112 std::vector<Record *> CompatRules =
113 Records.getAllDerivedDefinitions("CompatRule");
114
115 for (auto *Rule : CompatRules) {
116 StringRef FuncName = Rule->getValueAsString("CompatFunc");
117 OS << " Ret &= " << FuncName << "(Caller, Callee);\n";
118 }
119
120 OS << "\n";
121 OS << " return Ret;\n";
122 OS << "}\n\n";
123
124 std::vector<Record *> MergeRules =
125 Records.getAllDerivedDefinitions("MergeRule");
126 OS << "static inline void mergeFnAttrs(Function &Caller,\n"
127 << " const Function &Callee) {\n";
128
129 for (auto *Rule : MergeRules) {
130 StringRef FuncName = Rule->getValueAsString("MergeFunc");
131 OS << " " << FuncName << "(Caller, Callee);\n";
132 }
133
134 OS << "}\n\n";
135
136 OS << "#endif\n";
137 }
138
printEnumAttrClasses(raw_ostream & OS,const std::vector<Record * > & Records)139 void Attributes::printEnumAttrClasses(raw_ostream &OS,
140 const std::vector<Record *> &Records) {
141 OS << "// EnumAttr classes\n";
142 for (const auto *R : Records) {
143 OS << "struct " << R->getName() << "Attr : EnumAttr {\n";
144 OS << " static enum Attribute::AttrKind getKind() {\n";
145 OS << " return llvm::Attribute::" << R->getName() << ";\n";
146 OS << " }\n";
147 OS << "};\n";
148 }
149 OS << "\n";
150 }
151
printStrBoolAttrClasses(raw_ostream & OS,const std::vector<Record * > & Records)152 void Attributes::printStrBoolAttrClasses(raw_ostream &OS,
153 const std::vector<Record *> &Records) {
154 OS << "// StrBoolAttr classes\n";
155 for (const auto *R : Records) {
156 OS << "struct " << R->getName() << "Attr : StrBoolAttr {\n";
157 OS << " static StringRef getKind() {\n";
158 OS << " return \"" << R->getValueAsString("AttrString") << "\";\n";
159 OS << " }\n";
160 OS << "};\n";
161 }
162 OS << "\n";
163 }
164
emit(raw_ostream & OS)165 void Attributes::emit(raw_ostream &OS) {
166 emitTargetIndependentEnums(OS);
167 emitConversionFn(OS);
168 emitFnAttrCompatCheck(OS, false);
169 }
170
171 namespace llvm {
172
EmitAttributes(RecordKeeper & RK,raw_ostream & OS)173 void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
174 Attributes(RK).emit(OS);
175 }
176
177 } // End llvm namespace.
178