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Support for property access (named, keyed) in the fast compiler.

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The generated code is similar to the existing code, but we never
inline any IC code in the fast compiler.


Review URL: http://codereview.chromium.org/337045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3152 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
fschneider@chromium.org 2009-10-27 16:11:12 +00:00
parent d05c23dbd0
commit 64e1d3205f
6 changed files with 166 additions and 10 deletions
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39
src/arm/fast-codegen-arm.cc
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@ -497,6 +497,45 @@ void FastCodeGenerator::VisitAssignment(Assignment* expr) {
}
void FastCodeGenerator::VisitProperty(Property* expr) {
Comment cmnt(masm_, "[ Property");
Expression* key = expr->key();
uint32_t dummy;
// Evaluate receiver.
Visit(expr->obj());
if (key->AsLiteral() != NULL && key->AsLiteral()->handle()->IsSymbol() &&
!String::cast(*(key->AsLiteral()->handle()))->AsArrayIndex(&dummy)) {
// Do a NAMED property load.
// The IC expects the property name in ecx and the receiver on the stack.
__ mov(r2, Operand(key->AsLiteral()->handle()));
Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
__ Call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a "test eax,..."
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
} else {
// Do a KEYED property load.
Visit(expr->key());
Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize));
__ Call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a "test eax,..."
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
// Drop key and receiver left on the stack by IC.
__ pop();
}
switch (expr->location().type()) {
case Location::TEMP:
__ str(r0, MemOperand(sp));
break;
case Location::NOWHERE:
__ pop();
}
}
void FastCodeGenerator::VisitCall(Call* expr) {
Comment cmnt(masm_, "[ Call");
Expression* fun = expr->expression();

4
src/compiler.cc
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@ -697,7 +697,9 @@ void CodeGenSelector::VisitThrow(Throw* expr) {
void CodeGenSelector::VisitProperty(Property* expr) {
BAILOUT("Property");
Visit(expr->obj());
CHECK_BAILOUT;
Visit(expr->key());
}

5
src/fast-codegen.cc
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@ -351,11 +351,6 @@ void FastCodeGenerator::VisitThrow(Throw* expr) {
}
void FastCodeGenerator::VisitProperty(Property* expr) {
UNREACHABLE();
}
void FastCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
UNREACHABLE();
}

49
src/ia32/fast-codegen-ia32.cc
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@ -205,11 +205,12 @@ void FastCodeGenerator::VisitVariableProxy(VariableProxy* expr) {
__ mov(ecx, expr->name());
Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
__ call(ic, RelocInfo::CODE_TARGET_CONTEXT);
// By emitting a nop we make sure that we do not have a test eax
// instruction after the call it is treated specially by the LoadIC code
// Remember that the assembler may choose to do peephole optimization
// (eg, push/pop elimination).
__ nop();
// A test eax instruction following the call is used by the IC to
// indicate that the inobject property case was inlined. Ensure there
// is no test eax instruction here. Remember that the assembler may
// choose to do peephole optimization (eg, push/pop elimination).
switch (expr->location().type()) {
case Location::NOWHERE:
__ add(Operand(esp), Immediate(kPointerSize));
@ -492,6 +493,46 @@ void FastCodeGenerator::VisitAssignment(Assignment* expr) {
}
void FastCodeGenerator::VisitProperty(Property* expr) {
Comment cmnt(masm_, "[ Property");
Expression* key = expr->key();
uint32_t dummy;
// Evaluate receiver.
Visit(expr->obj());
if (key->AsLiteral() != NULL && key->AsLiteral()->handle()->IsSymbol() &&
!String::cast(*(key->AsLiteral()->handle()))->AsArrayIndex(&dummy)) {
// Do a NAMED property load.
// The IC expects the property name in ecx and the receiver on the stack.
__ mov(ecx, Immediate(key->AsLiteral()->handle()));
Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
__ call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a test eax
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
} else {
// Do a KEYED property load.
Visit(expr->key());
Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize));
__ call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a "test eax,..."
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
// Drop key left on the stack by IC.
__ add(Operand(esp), Immediate(kPointerSize));
}
switch (expr->location().type()) {
case Location::TEMP:
__ mov(Operand(esp, 0), eax);
break;
case Location::NOWHERE:
__ add(Operand(esp), Immediate(kPointerSize));
break;
}
}
void FastCodeGenerator::VisitCall(Call* expr) {
Expression* fun = expr->expression();
ZoneList<Expression*>* args = expr->arguments();

40
src/x64/fast-codegen-x64.cc
View File

@ -506,6 +506,46 @@ void FastCodeGenerator::VisitAssignment(Assignment* expr) {
}
void FastCodeGenerator::VisitProperty(Property* expr) {
Comment cmnt(masm_, "[ Property");
Expression* key = expr->key();
uint32_t dummy;
// Evaluate receiver.
Visit(expr->obj());
if (key->AsLiteral() != NULL && key->AsLiteral()->handle()->IsSymbol() &&
!String::cast(*(key->AsLiteral()->handle()))->AsArrayIndex(&dummy)) {
// Do a NAMED property load.
// The IC expects the property name in rcx and the receiver on the stack.
__ Move(rcx, key->AsLiteral()->handle());
Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
__ call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a "test eax,..."
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
} else {
// Do a KEYED property load.
Visit(expr->key());
Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize));
__ call(ic, RelocInfo::CODE_TARGET);
// By emitting a nop we make sure that we do not have a "test ..."
// instruction after the call it is treated specially by the LoadIC code.
__ nop();
// Drop key left on the stack by IC.
__ addq(rsp, Immediate(kPointerSize));
}
switch (expr->location().type()) {
case Location::TEMP:
__ movq(Operand(rsp, 0), rax);
break;
case Location::NOWHERE:
__ addq(rsp, Immediate(kPointerSize));
break;
}
}
void FastCodeGenerator::VisitCall(Call* expr) {
Expression* fun = expr->expression();
ZoneList<Expression*>* args = expr->arguments();

39
test/mjsunit/compiler/property-simple.js Normal file
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@ -0,0 +1,39 @@
// Copyright 2009 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.
// Test for property access
var a;
var b;
code = "a = {x:8, y:9}; a.x";
assertEquals(8, eval(code));
code = "b = {z:a}; b.z.y";
assertEquals(9, eval(code));