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// 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 "cpu-profiler.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, const char* kind) {
bool print_source = false;
bool print_ast = false;
const char* ftype;
if (info->isolate()->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("[generating %s code for %s function: ", kind, ftype);
if (info->IsStub()) {
const char* name =
CodeStub::MajorName(info->code_stub()->MajorKey(), true);
PrintF("%s", name == NULL ? "<unknown>" : name);
} else {
PrintF("%s", *info->function()->debug_name()->ToCString());
}
PrintF("]\n");
}
#ifdef DEBUG
if (!info->IsStub() && print_source) {
PrintF("--- Source from AST ---\n%s\n",
PrettyPrinter(info->isolate()).PrintProgram(info->function()));
}
if (!info->IsStub() && print_ast) {
PrintF("--- AST ---\n%s\n",
AstPrinter(info->isolate()).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;
bool is_crankshafted =
Code::ExtractKindFromFlags(flags) == Code::OPTIMIZED_FUNCTION ||
info->IsStub();
masm->GetCode(&desc);
Handle<Code> code =
isolate->factory()->NewCode(desc, flags, masm->CodeObject(),
false, is_crankshafted,
info->prologue_offset());
isolate->counters()->total_compiled_code_size()->Increment(
code->instruction_size());
isolate->heap()->IncrementCodeGeneratedBytes(is_crankshafted,
code->instruction_size());
return code;
}
void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) {
#ifdef ENABLE_DISASSEMBLER
AllowDeferredHandleDereference allow_deference_for_print_code;
bool print_code = info->isolate()->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();
bool print_source = code->kind() == Code::OPTIMIZED_FUNCTION ||
code->kind() == Code::FUNCTION;
if (print_source) {
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 (print_source) {
PrintF("source_position = %d\n", function->start_position());
}
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());
}
PrintF("--- End code ---\n");
}
#endif // ENABLE_DISASSEMBLER
}
bool CodeGenerator::ShouldGenerateLog(Isolate* isolate, Expression* type) {
ASSERT(type != NULL);
if (!isolate->logger()->is_logging() &&
!isolate->cpu_profiler()->is_profiling()) {
return false;
}
Handle<String> name = Handle<String>::cast(type->AsLiteral()->value());
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
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