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Side by Side Diff: src/arm/lithium-arm.h

Issue 24957003: Add tool to visualize machine code/lithium. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Final polish before review Created 7 years, 2 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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208 return H##type::cast(hydrogen_value()); \ 208 return H##type::cast(hydrogen_value()); \
209 } 209 }
210 210
211 211
212 class LInstruction : public ZoneObject { 212 class LInstruction : public ZoneObject {
213 public: 213 public:
214 LInstruction() 214 LInstruction()
215 : environment_(NULL), 215 : environment_(NULL),
216 hydrogen_value_(NULL), 216 hydrogen_value_(NULL),
217 bit_field_(IsCallBits::encode(false)) { 217 bit_field_(IsCallBits::encode(false)) {
218 set_position(RelocInfo::kNoPosition);
219 } 218 }
220 219
221 virtual ~LInstruction() {} 220 virtual ~LInstruction() {}
222 221
223 virtual void CompileToNative(LCodeGen* generator) = 0; 222 virtual void CompileToNative(LCodeGen* generator) = 0;
224 virtual const char* Mnemonic() const = 0; 223 virtual const char* Mnemonic() const = 0;
225 virtual void PrintTo(StringStream* stream); 224 virtual void PrintTo(StringStream* stream);
226 virtual void PrintDataTo(StringStream* stream); 225 virtual void PrintDataTo(StringStream* stream);
227 virtual void PrintOutputOperandTo(StringStream* stream); 226 virtual void PrintOutputOperandTo(StringStream* stream);
228 227
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249 virtual bool IsControl() const { return false; } 248 virtual bool IsControl() const { return false; }
250 249
251 void set_environment(LEnvironment* env) { environment_ = env; } 250 void set_environment(LEnvironment* env) { environment_ = env; }
252 LEnvironment* environment() const { return environment_; } 251 LEnvironment* environment() const { return environment_; }
253 bool HasEnvironment() const { return environment_ != NULL; } 252 bool HasEnvironment() const { return environment_ != NULL; }
254 253
255 void set_pointer_map(LPointerMap* p) { pointer_map_.set(p); } 254 void set_pointer_map(LPointerMap* p) { pointer_map_.set(p); }
256 LPointerMap* pointer_map() const { return pointer_map_.get(); } 255 LPointerMap* pointer_map() const { return pointer_map_.get(); }
257 bool HasPointerMap() const { return pointer_map_.is_set(); } 256 bool HasPointerMap() const { return pointer_map_.is_set(); }
258 257
259 // The 31 bits PositionBits is used to store the int position value. And the
260 // position value may be RelocInfo::kNoPosition (-1). The accessor always
261 // +1/-1 so that the encoded value of position in bit_field_ is always >= 0
262 // and can fit into the 31 bits PositionBits.
263 void set_position(int pos) {
264 bit_field_ = PositionBits::update(bit_field_, pos + 1);
265 }
266 int position() { return PositionBits::decode(bit_field_) - 1; }
267
268 void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; } 258 void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; }
269 HValue* hydrogen_value() const { return hydrogen_value_; } 259 HValue* hydrogen_value() const { return hydrogen_value_; }
270 260
271 virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) { } 261 virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) { }
272 262
273 void MarkAsCall() { bit_field_ = IsCallBits::update(bit_field_, true); } 263 void MarkAsCall() { bit_field_ = IsCallBits::update(bit_field_, true); }
274 bool IsCall() const { return IsCallBits::decode(bit_field_); } 264 bool IsCall() const { return IsCallBits::decode(bit_field_); }
275 265
276 // Interface to the register allocator and iterators. 266 // Interface to the register allocator and iterators.
277 bool ClobbersTemps() const { return IsCall(); } 267 bool ClobbersTemps() const { return IsCall(); }
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297 // Iterator support. 287 // Iterator support.
298 friend class InputIterator; 288 friend class InputIterator;
299 virtual int InputCount() = 0; 289 virtual int InputCount() = 0;
300 virtual LOperand* InputAt(int i) = 0; 290 virtual LOperand* InputAt(int i) = 0;
301 291
302 friend class TempIterator; 292 friend class TempIterator;
303 virtual int TempCount() = 0; 293 virtual int TempCount() = 0;
304 virtual LOperand* TempAt(int i) = 0; 294 virtual LOperand* TempAt(int i) = 0;
305 295
306 class IsCallBits: public BitField<bool, 0, 1> {}; 296 class IsCallBits: public BitField<bool, 0, 1> {};
307 class PositionBits: public BitField<int, 1, 31> {};
308 297
309 LEnvironment* environment_; 298 LEnvironment* environment_;
310 SetOncePointer<LPointerMap> pointer_map_; 299 SetOncePointer<LPointerMap> pointer_map_;
311 HValue* hydrogen_value_; 300 HValue* hydrogen_value_;
312 int bit_field_; 301 int bit_field_;
313 }; 302 };
314 303
315 304
316 // R = number of result operands (0 or 1). 305 // R = number of result operands (0 or 1).
317 // I = number of input operands. 306 // I = number of input operands.
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2897 2886
2898 DISALLOW_COPY_AND_ASSIGN(LChunkBuilder); 2887 DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
2899 }; 2888 };
2900 2889
2901 #undef DECLARE_HYDROGEN_ACCESSOR 2890 #undef DECLARE_HYDROGEN_ACCESSOR
2902 #undef DECLARE_CONCRETE_INSTRUCTION 2891 #undef DECLARE_CONCRETE_INSTRUCTION
2903 2892
2904 } } // namespace v8::internal 2893 } } // namespace v8::internal
2905 2894
2906 #endif // V8_ARM_LITHIUM_ARM_H_ 2895 #endif // V8_ARM_LITHIUM_ARM_H_
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