Revision: 19336
Author: [email protected]
Date: Wed Feb 12 16:07:47 2014 UTC
Log: Merged r19031 into 3.22 branch.
Fix short-circuiting logical and/or in HOptimizedGraphBuilder.
BUG=336148
LOG=N
[email protected]
Review URL: https://codereview.chromium.org/160543002
http://code.google.com/p/v8/source/detail?r=19336
Added:
/branches/3.22/test/mjsunit/regress/regress-crbug-336148.js
Modified:
/branches/3.22/src/hydrogen.cc
/branches/3.22/src/version.cc
=======================================
--- /dev/null
+++ /branches/3.22/test/mjsunit/regress/regress-crbug-336148.js Wed Feb 12
16:07:47 2014 UTC
@@ -0,0 +1,56 @@
+// Copyright 2014 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.
+
+// Flags: --allow-natives-syntax
+
+function f(o) {
+ var a = 1;
+ if (true) return o.v && a;
+}
+
+f({});
+f({});
+%OptimizeFunctionOnNextCall(f);
+assertEquals(1, f({ v: 1 }));
+
+
+function f1() { return 1 && 2; };
+function f2() { return 1 || 2; };
+function f3() { return 0 && 2; };
+function f4() { return 0 || 2; };
+
+function test() {
+ assertEquals(2, f1());
+ assertEquals(1, f2());
+ assertEquals(0, f3());
+ assertEquals(2, f4());
+}
+
+test();
+test();
+[f1, f2, f3, f4].forEach(function(f) { %OptimizeFunctionOnNextCall(f); });
+test();
=======================================
--- /branches/3.22/src/hydrogen.cc Mon Nov 18 08:39:25 2013 UTC
+++ /branches/3.22/src/hydrogen.cc Wed Feb 12 16:07:47 2014 UTC
@@ -8050,11 +8050,14 @@
ASSERT(current_block() != NULL);
HValue* left_value = Top();
- if (left_value->IsConstant()) {
- HConstant* left_constant = HConstant::cast(left_value);
- if ((is_logical_and && left_constant->BooleanValue()) ||
- (!is_logical_and && !left_constant->BooleanValue())) {
- Drop(1); // left_value.
+ // Short-circuit left values that always evaluate to the same boolean
value.
+ if (expr->left()->ToBooleanIsTrue() ||
expr->left()->ToBooleanIsFalse()) {
+ // l (evals true) && r -> r
+ // l (evals true) || r -> l
+ // l (evals false) && r -> l
+ // l (evals false) || r -> r
+ if (is_logical_and == expr->left()->ToBooleanIsTrue()) {
+ Drop(1);
CHECK_ALIVE(VisitForValue(expr->right()));
}
return ast_context()->ReturnValue(Pop());
=======================================
--- /branches/3.22/src/version.cc Wed Jan 29 15:06:47 2014 UTC
+++ /branches/3.22/src/version.cc Wed Feb 12 16:07:47 2014 UTC
@@ -35,7 +35,7 @@
#define MAJOR_VERSION 3
#define MINOR_VERSION 22
#define BUILD_NUMBER 24
-#define PATCH_LEVEL 20
+#define PATCH_LEVEL 21
// 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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