| // Copyright 2010 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef V8_FAST_CODEGEN_H_ |
| #define V8_FAST_CODEGEN_H_ |
| |
| #include "v8.h" |
| |
| #include "ast.h" |
| #include "compiler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class FastCodeGenSyntaxChecker: public AstVisitor { |
| public: |
| explicit FastCodeGenSyntaxChecker() |
| : info_(NULL), has_supported_syntax_(true) { |
| } |
| |
| void Check(CompilationInfo* info); |
| |
| CompilationInfo* info() { return info_; } |
| bool has_supported_syntax() { return has_supported_syntax_; } |
| |
| private: |
| void VisitDeclarations(ZoneList<Declaration*>* decls); |
| void VisitStatements(ZoneList<Statement*>* stmts); |
| |
| // AST node visit functions. |
| #define DECLARE_VISIT(type) virtual void Visit##type(type* node); |
| AST_NODE_LIST(DECLARE_VISIT) |
| #undef DECLARE_VISIT |
| |
| CompilationInfo* info_; |
| bool has_supported_syntax_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FastCodeGenSyntaxChecker); |
| }; |
| |
| |
| class FastCodeGenerator: public AstVisitor { |
| public: |
| explicit FastCodeGenerator(MacroAssembler* masm) |
| : masm_(masm), info_(NULL), destination_(no_reg), smi_bits_(0) { |
| } |
| |
| static Handle<Code> MakeCode(CompilationInfo* info); |
| |
| void Generate(CompilationInfo* compilation_info); |
| |
| private: |
| MacroAssembler* masm() { return masm_; } |
| CompilationInfo* info() { return info_; } |
| Label* bailout() { return &bailout_; } |
| |
| Register destination() { return destination_; } |
| void set_destination(Register reg) { destination_ = reg; } |
| |
| FunctionLiteral* function() { return info_->function(); } |
| Scope* scope() { return info_->scope(); } |
| |
| // Platform-specific fixed registers, all guaranteed distinct. |
| Register accumulator0(); |
| Register accumulator1(); |
| Register scratch0(); |
| Register scratch1(); |
| Register receiver_reg(); |
| Register context_reg(); |
| |
| Register other_accumulator(Register reg) { |
| ASSERT(reg.is(accumulator0()) || reg.is(accumulator1())); |
| return (reg.is(accumulator0())) ? accumulator1() : accumulator0(); |
| } |
| |
| // Flags are true if the respective register is statically known to hold a |
| // smi. We do not track every register, only the accumulator registers. |
| bool is_smi(Register reg) { |
| ASSERT(!reg.is(no_reg)); |
| return (smi_bits_ & reg.bit()) != 0; |
| } |
| void set_as_smi(Register reg) { |
| ASSERT(!reg.is(no_reg)); |
| smi_bits_ = smi_bits_ | reg.bit(); |
| } |
| void clear_as_smi(Register reg) { |
| ASSERT(!reg.is(no_reg)); |
| smi_bits_ = smi_bits_ & ~reg.bit(); |
| } |
| |
| // AST node visit functions. |
| #define DECLARE_VISIT(type) virtual void Visit##type(type* node); |
| AST_NODE_LIST(DECLARE_VISIT) |
| #undef DECLARE_VISIT |
| |
| // Emit code to load the receiver from the stack into receiver_reg. |
| void EmitLoadReceiver(); |
| |
| // Emit code to load a global variable directly from a global property |
| // cell into the destination register. |
| void EmitGlobalVariableLoad(Handle<Object> cell); |
| |
| // Emit a store to an own property of this. The stored value is expected |
| // in accumulator0 and the receiver in receiver_reg. The receiver |
| // register is preserved and the result (the stored value) is left in the |
| // destination register. |
| void EmitThisPropertyStore(Handle<String> name); |
| |
| // Emit a load from an own property of this. The receiver is expected in |
| // receiver_reg. The receiver register is preserved and the result is |
| // left in the destination register. |
| void EmitThisPropertyLoad(Handle<String> name); |
| |
| // Emit a bitwise or operation. The left operand is in accumulator1 and |
| // the right is in accumulator0. The result should be left in the |
| // destination register. |
| void EmitBitOr(); |
| |
| MacroAssembler* masm_; |
| CompilationInfo* info_; |
| Label bailout_; |
| Register destination_; |
| uint32_t smi_bits_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FastCodeGenerator); |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_FAST_CODEGEN_H_ |