// 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
-// 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.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
#include "v8.h"
if (cgen_->IsSmiConstant(constant_source)) {
__ Move(dst, cgen_->ToSmi(constant_source));
} else if (cgen_->IsInteger32Constant(constant_source)) {
- __ Set(dst, static_cast<uint32_t>(cgen_->ToInteger32(constant_source)));
+ int32_t constant = cgen_->ToInteger32(constant_source);
+ // Do sign extension only for constant used as de-hoisted array key.
+ // Others only need zero extension, which saves 2 bytes.
+ if (cgen_->IsDehoistedKeyConstant(constant_source)) {
+ __ Set(dst, constant);
+ } else {
+ __ Set(dst, static_cast<uint32_t>(constant));
+ }
} else {
__ Move(dst, cgen_->ToHandle(constant_source));
}
if (cgen_->IsSmiConstant(constant_source)) {
__ Move(dst, cgen_->ToSmi(constant_source));
} else if (cgen_->IsInteger32Constant(constant_source)) {
- // Zero top 32 bits of a 64 bit spill slot that holds a 32 bit untagged
- // value.
+ // Do sign extension to 64 bits when stored into stack slot.
__ movp(dst, Immediate(cgen_->ToInteger32(constant_source)));
} else {
__ Move(kScratchRegister, cgen_->ToHandle(constant_source));