| // Copyright 2012 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. |
| |
| #include "v8.h" |
| |
| #include "bootstrapper.h" |
| #include "codegen.h" |
| #include "compiler.h" |
| #include "debug.h" |
| #include "prettyprinter.h" |
| #include "rewriter.h" |
| #include "runtime.h" |
| #include "stub-cache.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| #define __ ACCESS_MASM(masm_) |
| |
| #ifdef DEBUG |
| |
| Comment::Comment(MacroAssembler* masm, const char* msg) |
| : masm_(masm), msg_(msg) { |
| __ RecordComment(msg); |
| } |
| |
| |
| Comment::~Comment() { |
| if (msg_[0] == '[') __ RecordComment("]"); |
| } |
| |
| #endif // DEBUG |
| |
| #undef __ |
| |
| |
| void CodeGenerator::MakeCodePrologue(CompilationInfo* info) { |
| #ifdef DEBUG |
| bool print_source = false; |
| bool print_ast = false; |
| const char* ftype; |
| |
| if (Isolate::Current()->bootstrapper()->IsActive()) { |
| print_source = FLAG_print_builtin_source; |
| print_ast = FLAG_print_builtin_ast; |
| ftype = "builtin"; |
| } else { |
| print_source = FLAG_print_source; |
| print_ast = FLAG_print_ast; |
| ftype = "user-defined"; |
| } |
| |
| if (FLAG_trace_codegen || print_source || print_ast) { |
| PrintF("*** Generate code for %s function: ", ftype); |
| if (info->IsStub()) { |
| const char* name = |
| CodeStub::MajorName(info->code_stub()->MajorKey(), true); |
| PrintF("%s", name == NULL ? "<unknown>" : name); |
| } else { |
| info->function()->name()->ShortPrint(); |
| } |
| PrintF(" ***\n"); |
| } |
| |
| if (!info->IsStub() && print_source) { |
| PrintF("--- Source from AST ---\n%s\n", |
| PrettyPrinter().PrintProgram(info->function())); |
| } |
| |
| if (!info->IsStub() && print_ast) { |
| PrintF("--- AST ---\n%s\n", |
| AstPrinter().PrintProgram(info->function())); |
| } |
| #endif // DEBUG |
| } |
| |
| |
| Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm, |
| Code::Flags flags, |
| CompilationInfo* info) { |
| Isolate* isolate = info->isolate(); |
| |
| // Allocate and install the code. |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Handle<Code> code = |
| isolate->factory()->NewCode(desc, flags, masm->CodeObject()); |
| |
| if (!code.is_null()) { |
| isolate->counters()->total_compiled_code_size()->Increment( |
| code->instruction_size()); |
| code->set_prologue_offset(info->prologue_offset()); |
| } |
| return code; |
| } |
| |
| |
| void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) { |
| #ifdef ENABLE_DISASSEMBLER |
| bool print_code = Isolate::Current()->bootstrapper()->IsActive() |
| ? FLAG_print_builtin_code |
| : (FLAG_print_code || |
| (info->IsStub() && FLAG_print_code_stubs) || |
| (info->IsOptimizing() && FLAG_print_opt_code)); |
| if (print_code) { |
| // Print the source code if available. |
| FunctionLiteral* function = info->function(); |
| if (code->kind() != Code::COMPILED_STUB) { |
| Handle<Script> script = info->script(); |
| if (!script->IsUndefined() && !script->source()->IsUndefined()) { |
| PrintF("--- Raw source ---\n"); |
| ConsStringIteratorOp op; |
| StringCharacterStream stream(String::cast(script->source()), |
| &op, |
| function->start_position()); |
| // fun->end_position() points to the last character in the stream. We |
| // need to compensate by adding one to calculate the length. |
| int source_len = |
| function->end_position() - function->start_position() + 1; |
| for (int i = 0; i < source_len; i++) { |
| if (stream.HasMore()) PrintF("%c", stream.GetNext()); |
| } |
| PrintF("\n\n"); |
| } |
| } |
| if (info->IsOptimizing()) { |
| if (FLAG_print_unopt_code) { |
| PrintF("--- Unoptimized code ---\n"); |
| info->closure()->shared()->code()->Disassemble( |
| *function->debug_name()->ToCString()); |
| } |
| PrintF("--- Optimized code ---\n"); |
| } else { |
| PrintF("--- Code ---\n"); |
| } |
| if (info->IsStub()) { |
| CodeStub::Major major_key = info->code_stub()->MajorKey(); |
| code->Disassemble(CodeStub::MajorName(major_key, false)); |
| } else { |
| code->Disassemble(*function->debug_name()->ToCString()); |
| } |
| } |
| #endif // ENABLE_DISASSEMBLER |
| } |
| |
| |
| bool CodeGenerator::ShouldGenerateLog(Expression* type) { |
| ASSERT(type != NULL); |
| Isolate* isolate = Isolate::Current(); |
| if (!isolate->logger()->is_logging() && !CpuProfiler::is_profiling(isolate)) { |
| return false; |
| } |
| Handle<String> name = Handle<String>::cast(type->AsLiteral()->handle()); |
| if (FLAG_log_regexp) { |
| if (name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("regexp"))) |
| return true; |
| } |
| return false; |
| } |
| |
| |
| bool CodeGenerator::RecordPositions(MacroAssembler* masm, |
| int pos, |
| bool right_here) { |
| if (pos != RelocInfo::kNoPosition) { |
| masm->positions_recorder()->RecordStatementPosition(pos); |
| masm->positions_recorder()->RecordPosition(pos); |
| if (right_here) { |
| return masm->positions_recorder()->WriteRecordedPositions(); |
| } |
| } |
| return false; |
| } |
| |
| |
| void ArgumentsAccessStub::Generate(MacroAssembler* masm) { |
| switch (type_) { |
| case READ_ELEMENT: |
| GenerateReadElement(masm); |
| break; |
| case NEW_NON_STRICT_FAST: |
| GenerateNewNonStrictFast(masm); |
| break; |
| case NEW_NON_STRICT_SLOW: |
| GenerateNewNonStrictSlow(masm); |
| break; |
| case NEW_STRICT: |
| GenerateNewStrict(masm); |
| break; |
| } |
| } |
| |
| |
| int CEntryStub::MinorKey() { |
| int result = (save_doubles_ == kSaveFPRegs) ? 1 : 0; |
| ASSERT(result_size_ == 1 || result_size_ == 2); |
| #ifdef _WIN64 |
| return result | ((result_size_ == 1) ? 0 : 2); |
| #else |
| return result; |
| #endif |
| } |
| |
| |
| } } // namespace v8::internal |