Revision: 19574
Author: [email protected]
Date: Thu Feb 27 12:57:31 2014 UTC
Log: Merged r19535 into 3.23 branch.
Fix for a smi stores optimization on x64 with a regression test.
BUG=345715
LOG=N
[email protected]
Review URL: https://codereview.chromium.org/182993004
http://code.google.com/p/v8/source/detail?r=19574
Added:
/branches/3.23/test/mjsunit/regress/regress-crbug-345715.js
Modified:
/branches/3.23/src/hydrogen.cc
/branches/3.23/src/version.cc
=======================================
--- /dev/null
+++ /branches/3.23/test/mjsunit/regress/regress-crbug-345715.js Thu Feb 27
12:57:31 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 --debug-code
+
+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/3.23/src/hydrogen.cc Wed Feb 26 09:04:55 2014 UTC
+++ /branches/3.23/src/hydrogen.cc Thu Feb 27 12:57:31 2014 UTC
@@ -9475,7 +9475,7 @@
Add<HStoreNamedField>(object, access, result);
} else {
Representation representation = details.representation();
- HInstruction* value_instruction = Add<HConstant>(value);
+ HInstruction* value_instruction;
if (representation.IsDouble()) {
// Allocate a HeapNumber box and store the value into it.
@@ -9490,8 +9490,16 @@
AddStoreMapConstant(double_box,
isolate()->factory()->heap_number_map());
Add<HStoreNamedField>(double_box,
HObjectAccess::ForHeapNumberValue(),
- value_instruction);
+ Add<HConstant>(value));
value_instruction = double_box;
+ } 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);
}
Add<HStoreNamedField>(object, access, value_instruction);
=======================================
--- /branches/3.23/src/version.cc Wed Feb 26 09:04:55 2014 UTC
+++ /branches/3.23/src/version.cc Thu Feb 27 12:57:31 2014 UTC
@@ -35,7 +35,7 @@
#define MAJOR_VERSION 3
#define MINOR_VERSION 23
#define BUILD_NUMBER 17
-#define PATCH_LEVEL 15
+#define PATCH_LEVEL 16
// Use 1 for candidates and 0 otherwise.
// (Boolean macro values are not supported by all preprocessors.)
#define IS_CANDIDATE_VERSION 0
--
--
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