Revision: 19535
Author: [email protected]
Date: Tue Feb 25 09:55:02 2014 UTC
Log: Fix for a smi stores optimization on x64 with a regression test.
BUG=345715
LOG=N
[email protected]
Review URL: https://codereview.chromium.org/178833002
http://code.google.com/p/v8/source/detail?r=19535
Added:
/branches/bleeding_edge/test/mjsunit/regress/regress-crbug-345715.js
Modified:
/branches/bleeding_edge/src/hydrogen.cc
=======================================
--- /dev/null
+++ /branches/bleeding_edge/test/mjsunit/regress/regress-crbug-345715.js
Tue Feb 25 09:55:02 2014 UTC
@@ -0,0 +1,26 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+a = {y:1.5};
+a.y = 0;
+b = a.y;
+c = {y:{}};
+
+function f() {
+ return 1;
+}
+
+function g() {
+ var e = {y: b};
+ var d = {x:f()};
+ var d = {x:f()};
+ return [e, d];
+}
+
+g();
+g();
+%OptimizeFunctionOnNextCall(g);
+assertEquals(1, g()[1].x);
=======================================
--- /branches/bleeding_edge/src/hydrogen.cc Wed Feb 19 13:51:49 2014 UTC
+++ /branches/bleeding_edge/src/hydrogen.cc Tue Feb 25 09:55:02 2014 UTC
@@ -9924,9 +9924,11 @@
Add<HStoreNamedField>(double_box,
HObjectAccess::ForHeapNumberValue(),
Add<HConstant>(value));
value_instruction = double_box;
- } else if (representation.IsSmi() && value->IsUninitialized()) {
- value_instruction = graph()->GetConstant0();
- // Ensure that Constant0 is stored as smi.
+ } else if (representation.IsSmi()) {
+ value_instruction = value->IsUninitialized()
+ ? graph()->GetConstant0()
+ : Add<HConstant>(value);
+ // Ensure that value is stored as smi.
access = access.WithRepresentation(representation);
} else {
value_instruction = Add<HConstant>(value);
--
--
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