1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef V8_LITHIUM_CODEGEN_H_
29 #define V8_LITHIUM_CODEGEN_H_
41 class LCodeGenBase BASE_EMBEDDED {
43 LCodeGenBase(LChunk* chunk,
44 MacroAssembler* assembler,
45 CompilationInfo* info);
46 virtual ~LCodeGenBase() {}
49 MacroAssembler* masm() const { return masm_; }
50 CompilationInfo* info() const { return info_; }
51 Isolate* isolate() const { return info_->isolate(); }
52 Factory* factory() const { return isolate()->factory(); }
53 Heap* heap() const { return isolate()->heap(); }
54 Zone* zone() const { return zone_; }
55 LPlatformChunk* chunk() const { return chunk_; }
56 HGraph* graph() const;
58 void FPRINTF_CHECKING Comment(const char* format, ...);
61 virtual void GenerateBodyInstructionPre(LInstruction* instr) {}
62 virtual void GenerateBodyInstructionPost(LInstruction* instr) {}
64 virtual void EnsureSpaceForLazyDeopt(int space_needed) = 0;
65 virtual void RecordAndWritePosition(int position) = 0;
67 int GetNextEmittedBlock() const;
69 void RegisterWeakObjectsInOptimizedCode(Handle<Code> code);
71 // Check that an environment assigned via AssignEnvironment is actually being
72 // used. Redundant assignments keep things alive longer than necessary, and
73 // consequently lead to worse code, so it's important to minimize this.
74 void CheckEnvironmentUsage();
84 LPlatformChunk* const chunk_;
85 MacroAssembler* const masm_;
86 CompilationInfo* const info_;
90 int current_instruction_;
91 const ZoneList<LInstruction*>* instructions_;
92 int last_lazy_deopt_pc_;
94 bool is_unused() const { return status_ == UNUSED; }
95 bool is_generating() const { return status_ == GENERATING; }
96 bool is_done() const { return status_ == DONE; }
97 bool is_aborted() const { return status_ == ABORTED; }
101 } } // namespace v8::internal
103 #endif // V8_LITHIUM_CODEGEN_H_