1 //===- MILexer.h - Lexer for machine instructions -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the function that lexes the machine instruction source
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_LIB_CODEGEN_MIRPARSER_MILEXER_H
16 #define LLVM_LIB_CODEGEN_MIRPARSER_MILEXER_H
18 #include "llvm/ADT/APSInt.h"
19 #include "llvm/ADT/StringRef.h"
20 #include "llvm/ADT/STLExtras.h"
27 /// A token produced by the machine instruction lexer.
35 // Tokens with no info.
64 kw_cfi_def_cfa_register,
65 kw_cfi_def_cfa_offset,
90 // Named metadata keywords
100 MachineBasicBlockLabel,
110 FloatingPointLiteral,
122 StringRef StringValue;
123 std::string StringValueStorage;
127 MIToken() : Kind(Error) {}
129 MIToken &reset(TokenKind Kind, StringRef Range);
131 MIToken &setStringValue(StringRef StrVal);
132 MIToken &setOwnedStringValue(std::string StrVal);
133 MIToken &setIntegerValue(APSInt IntVal);
135 TokenKind kind() const { return Kind; }
137 bool isError() const { return Kind == Error; }
139 bool isNewlineOrEOF() const { return Kind == Newline || Kind == Eof; }
141 bool isErrorOrEOF() const { return Kind == Error || Kind == Eof; }
143 bool isRegister() const {
144 return Kind == NamedRegister || Kind == underscore ||
145 Kind == VirtualRegister;
148 bool isRegisterFlag() const {
149 return Kind == kw_implicit || Kind == kw_implicit_define ||
150 Kind == kw_def || Kind == kw_dead || Kind == kw_killed ||
151 Kind == kw_undef || Kind == kw_internal ||
152 Kind == kw_early_clobber || Kind == kw_debug_use;
155 bool isMemoryOperandFlag() const {
156 return Kind == kw_volatile || Kind == kw_non_temporal ||
157 Kind == kw_invariant;
160 bool is(TokenKind K) const { return Kind == K; }
162 bool isNot(TokenKind K) const { return Kind != K; }
164 StringRef::iterator location() const { return Range.begin(); }
166 StringRef range() const { return Range; }
168 /// Return the token's string value.
169 StringRef stringValue() const { return StringValue; }
171 const APSInt &integerValue() const { return IntVal; }
173 bool hasIntegerValue() const {
174 return Kind == IntegerLiteral || Kind == MachineBasicBlock ||
175 Kind == MachineBasicBlockLabel || Kind == StackObject ||
176 Kind == FixedStackObject || Kind == GlobalValue ||
177 Kind == VirtualRegister || Kind == ConstantPoolItem ||
178 Kind == JumpTableIndex || Kind == IRBlock;
182 /// Consume a single machine instruction token in the given source and return
183 /// the remaining source string.
184 StringRef lexMIToken(
185 StringRef Source, MIToken &Token,
186 function_ref<void(StringRef::iterator, const Twine &)> ErrorCallback);
188 } // end namespace llvm