v8/test/mjsunit/compiler/lazy-const-lookup.js

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Reapply r9870 "Remove some initialization checks based on source positions.". This reverts r9896 "Revert r9870 due to browser-test failures." See below for the diff from the previous version for the ia32 platform. The code for other platforms has been changed accordingly. TEST=mjsunit/compiler/lazy-const-lookup.js diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc index 2cbf518..1990f2f 100644 --- a/src/ia32/full-codegen-ia32.cc +++ b/src/ia32/full-codegen-ia32.cc @@ -1258,13 +1258,17 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy) { // binding is initialized: // function() { f(); let x = 1; function f() { x = 2; } } // - // Check that we always have valid source position. - ASSERT(var->initializer_position() != RelocInfo::kNoPosition); - ASSERT(proxy->position() != RelocInfo::kNoPosition); - bool skip_init_check = - var->mode() != CONST && - var->scope()->DeclarationScope() == scope()->DeclarationScope() && - var->initializer_position() < proxy->position(); + bool skip_init_check; + if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) { + skip_init_check = false; + } else { + // Check that we always have valid source position. + ASSERT(var->initializer_position() != RelocInfo::kNoPosition); + ASSERT(proxy->position() != RelocInfo::kNoPosition); + skip_init_check = var->mode() != CONST && + var->initializer_position() < proxy->position(); + } + if (!skip_init_check) { // Let and const need a read barrier. Label done; Review URL: http://codereview.chromium.org/8479034 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9915 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-11-08 13:28:53 +00:00
// Copyright 2011 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
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//
// 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.
// Flags: --allow-natives-syntax
function outer() {
const x = 1;
function inner() {
return x;
}
inner();
%OptimizeFunctionOnNextCall(inner);
inner();
}
outer();