jkummerow@chromium.org | d8a3a14 | 2013-10-03 12:15:05 +0000 | [diff] [blame] | 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 |
| 4 | // met: |
| 5 | // |
| 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. |
| 15 | // |
| 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, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_LITHIUM_CODEGEN_H_ |
| 29 | #define V8_LITHIUM_CODEGEN_H_ |
| 30 | |
| 31 | #include "v8.h" |
| 32 | |
| 33 | #include "compiler.h" |
| 34 | |
| 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
| 38 | class LInstruction; |
| 39 | class LPlatformChunk; |
| 40 | |
| 41 | class LCodeGenBase BASE_EMBEDDED { |
| 42 | public: |
| 43 | LCodeGenBase(LChunk* chunk, |
| 44 | MacroAssembler* assembler, |
| 45 | CompilationInfo* info); |
| 46 | virtual ~LCodeGenBase() {} |
| 47 | |
| 48 | // Simple accessors. |
| 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; |
| 57 | |
| 58 | void FPRINTF_CHECKING Comment(const char* format, ...); |
| 59 | |
| 60 | bool GenerateBody(); |
| 61 | virtual void GenerateBodyInstructionPre(LInstruction* instr) {} |
| 62 | virtual void GenerateBodyInstructionPost(LInstruction* instr) {} |
| 63 | |
| 64 | virtual void EnsureSpaceForLazyDeopt(int space_needed) = 0; |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 65 | virtual void RecordAndWritePosition(int position) = 0; |
jkummerow@chromium.org | d8a3a14 | 2013-10-03 12:15:05 +0000 | [diff] [blame] | 66 | |
| 67 | int GetNextEmittedBlock() const; |
| 68 | |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 69 | void RegisterWeakObjectsInOptimizedCode(Handle<Code> code); |
machenbach@chromium.org | ddf3811 | 2013-12-04 09:42:52 +0000 | [diff] [blame] | 70 | |
machenbach@chromium.org | 4edebd5 | 2014-04-03 00:05:17 +0000 | [diff] [blame] | 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(); |
| 75 | |
jkummerow@chromium.org | d8a3a14 | 2013-10-03 12:15:05 +0000 | [diff] [blame] | 76 | protected: |
| 77 | enum Status { |
| 78 | UNUSED, |
| 79 | GENERATING, |
| 80 | DONE, |
| 81 | ABORTED |
| 82 | }; |
| 83 | |
| 84 | LPlatformChunk* const chunk_; |
| 85 | MacroAssembler* const masm_; |
| 86 | CompilationInfo* const info_; |
| 87 | Zone* zone_; |
| 88 | Status status_; |
| 89 | int current_block_; |
| 90 | int current_instruction_; |
| 91 | const ZoneList<LInstruction*>* instructions_; |
| 92 | int last_lazy_deopt_pc_; |
| 93 | |
| 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; } |
| 98 | }; |
| 99 | |
| 100 | |
| 101 | } } // namespace v8::internal |
| 102 | |
| 103 | #endif // V8_LITHIUM_CODEGEN_H_ |