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.
34 // Tokens with no info.
57 kw_cfi_def_cfa_register,
58 kw_cfi_def_cfa_offset,
100 StringRef StringValue;
101 std::string StringValueStorage;
105 MIToken() : Kind(Error) {}
107 MIToken &reset(TokenKind Kind, StringRef Range);
109 MIToken &setStringValue(StringRef StrVal);
110 MIToken &setOwnedStringValue(std::string StrVal);
111 MIToken &setIntegerValue(APSInt IntVal);
113 TokenKind kind() const { return Kind; }
115 bool isError() const { return Kind == Error; }
117 bool isRegister() const {
118 return Kind == NamedRegister || Kind == underscore ||
119 Kind == VirtualRegister;
122 bool isRegisterFlag() const {
123 return Kind == kw_implicit || Kind == kw_implicit_define ||
124 Kind == kw_dead || Kind == kw_killed || Kind == kw_undef ||
125 Kind == kw_early_clobber || Kind == kw_debug_use;
128 bool isMemoryOperandFlag() const {
129 return Kind == kw_volatile || Kind == kw_non_temporal ||
130 Kind == kw_invariant;
133 bool is(TokenKind K) const { return Kind == K; }
135 bool isNot(TokenKind K) const { return Kind != K; }
137 StringRef::iterator location() const { return Range.begin(); }
139 StringRef range() const { return Range; }
141 /// Return the token's string value.
142 StringRef stringValue() const { return StringValue; }
144 const APSInt &integerValue() const { return IntVal; }
146 bool hasIntegerValue() const {
147 return Kind == IntegerLiteral || Kind == MachineBasicBlock ||
148 Kind == StackObject || Kind == FixedStackObject ||
149 Kind == GlobalValue || Kind == VirtualRegister ||
150 Kind == ConstantPoolItem || Kind == JumpTableIndex ||
155 /// Consume a single machine instruction token in the given source and return
156 /// the remaining source string.
157 StringRef lexMIToken(
158 StringRef Source, MIToken &Token,
159 function_ref<void(StringRef::iterator, const Twine &)> ErrorCallback);
161 } // end namespace llvm