[turbofan] Add support for inlining accessors into try-blocks.

test/mjsunit/compiler/inline-accessors.js

-// Copyright 2012 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 --inline-accessors
-
-var accessorCallCount, setterArgument, setterValue, obj, forceDeopt;
-
-// -----------------------------------------------------------------------------
-// Helpers for testing inlining of getters.
-
-function TestInlinedGetter(context, obj, expected) {
-  forceDeopt = { deopt: 0 };
-  accessorCallCount = 0;
-
-  assertEquals(expected, context(obj));
-  assertEquals(1, accessorCallCount);
-
-  assertEquals(expected, context(obj));
-  assertEquals(2, accessorCallCount);
-
-  %OptimizeFunctionOnNextCall(context);
-  assertEquals(expected, context(obj));
-  assertEquals(3, accessorCallCount);
-
-  forceDeopt = { /* empty*/ };
-  assertEquals(expected, context(obj));
-  assertEquals(4, accessorCallCount);
-}
-
-
-function value_context_for_getter(obj) {
-  return obj.getterProperty;
-}
-
-function test_context_for_getter(obj) {
-  if (obj.getterProperty) {
-    return 111;
-  } else {
-    return 222;
-  }
-}
-
-function effect_context_for_getter(obj) {
-  obj.getterProperty;
-  return 5678;
-}
-
-function TryGetter(context, getter, obj, expected, expectException) {
-  try {
-    TestInlinedGetter(context, obj, expected);
-    assertFalse(expectException);
-  } catch (exception) {
-    assertTrue(expectException);
-    assertEquals(7, exception.stack.split('\n').length);
-  }
-  %DeoptimizeFunction(context);
-  %ClearFunctionFeedback(context);
-  %ClearFunctionFeedback(getter);
-}
-
-function TestGetterInAllContexts(getter, obj, expected, expectException) {
-  TryGetter(value_context_for_getter, getter, obj, expected, expectException);
-  TryGetter(test_context_for_getter, getter, obj, expected ? 111 : 222,
-            expectException);
-  TryGetter(effect_context_for_getter, getter, obj, 5678, expectException);
-}
-
-// -----------------------------------------------------------------------------
-// Test getter returning something 'true'ish in all contexts.
-
-function getter1() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  return 1234;
-}
-
-function ConstrG1() { }
-obj = Object.defineProperty(new ConstrG1(), "getterProperty", { get: getter1 });
-TestGetterInAllContexts(getter1, obj, 1234, false);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter1, obj, 1234, false);
-
-// -----------------------------------------------------------------------------
-// Test getter returning false in all contexts.
-
-function getter2() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  return false;
-}
-
-function ConstrG2() { }
-obj = Object.defineProperty(new ConstrG2(), "getterProperty", { get: getter2 });
-TestGetterInAllContexts(getter2, obj, false, false);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter2, obj, false, false);
-
-// -----------------------------------------------------------------------------
-// Test getter without a return in all contexts.
-
-function getter3() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-}
-
-function ConstrG3() { }
-obj = Object.defineProperty(new ConstrG3(), "getterProperty", { get: getter3 });
-TestGetterInAllContexts(getter3, obj, undefined, false);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter3, obj, undefined, false);
-
-// -----------------------------------------------------------------------------
-// Test getter with too many arguments without a return in all contexts.
-
-function getter4(a) {
-  assertSame(obj, this);
-  assertEquals(undefined, a);
-  accessorCallCount++;
-  forceDeopt.deopt;
-}
-
-function ConstrG4() { }
-obj = Object.defineProperty(new ConstrG4(), "getterProperty", { get: getter4 });
-TestGetterInAllContexts(getter4, obj, undefined, false);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter4, obj, undefined, false);
-
-// -----------------------------------------------------------------------------
-// Test getter with too many arguments with a return in all contexts.
-
-function getter5(a) {
-  assertSame(obj, this);
-  assertEquals(undefined, a);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  return 9876;
-}
-
-function ConstrG5() { }
-obj = Object.defineProperty(new ConstrG5(), "getterProperty", { get: getter5 });
-TestGetterInAllContexts(getter5, obj, 9876, false);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter5, obj, 9876, false);
-
-// -----------------------------------------------------------------------------
-// Test getter which throws from optimized code.
-
-function getter6() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  if (accessorCallCount == 4) { 123 in null; }
-  return 13579;
-}
-
-function ConstrG6() { }
-obj = Object.defineProperty(new ConstrG6(), "getterProperty", { get: getter6 });
-TestGetterInAllContexts(getter6, obj, 13579, true);
-obj = Object.create(obj);
-TestGetterInAllContexts(getter6, obj, 13579, true);
-
-// -----------------------------------------------------------------------------
-// Helpers for testing inlining of setters.
-
-function TestInlinedSetter(context, obj, value, expected) {
-  forceDeopt = { deopt: 0 };
-  accessorCallCount = 0;
-  setterArgument = value;
-
-  assertEquals(expected, context(obj, value));
-  assertEquals(value, setterValue);
-  assertEquals(1, accessorCallCount);
-
-  assertEquals(expected, context(obj, value));
-  assertEquals(value, setterValue);
-  assertEquals(2, accessorCallCount);
-
-  %OptimizeFunctionOnNextCall(context);
-  assertEquals(expected, context(obj, value));
-  assertEquals(value, setterValue);
-  assertEquals(3, accessorCallCount);
-
-  forceDeopt = { /* empty*/ };
-  assertEquals(expected, context(obj, value));
-  assertEquals(value, setterValue);
-  assertEquals(4, accessorCallCount);
-}
-
-function value_context_for_setter(obj, value) {
-  return obj.setterProperty = value;
-}
-
-function test_context_for_setter(obj, value) {
-  if (obj.setterProperty = value) {
-    return 333;
-  } else {
-    return 444;
-  }
-}
-
-function effect_context_for_setter(obj, value) {
-  obj.setterProperty = value;
-  return 666;
-}
-
-function TrySetter(context, setter, obj, expectException, value, expected) {
-  try {
-    TestInlinedSetter(context, obj, value, expected);
-    assertFalse(expectException);
-  } catch (exception) {
-    assertTrue(expectException);
-    assertEquals(7, exception.stack.split('\n').length);
-  }
-  %DeoptimizeFunction(context);
-  %ClearFunctionFeedback(context);
-  %ClearFunctionFeedback(setter);
-}
-
-function TestSetterInAllContexts(setter, obj, expectException) {
-  TrySetter(value_context_for_setter, setter, obj, expectException, 111, 111);
-  TrySetter(test_context_for_setter, setter, obj, expectException, true, 333);
-  TrySetter(test_context_for_setter, setter, obj, expectException, false, 444);
-  TrySetter(effect_context_for_setter, setter, obj, expectException, 555, 666);
-}
-
-// -----------------------------------------------------------------------------
-// Test setter without a return in all contexts.
-
-function setter1(value) {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = value;
-}
-
-function ConstrS1() { }
-obj = Object.defineProperty(new ConstrS1(), "setterProperty", { set: setter1 });
-TestSetterInAllContexts(setter1, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter1, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter returning something different than the RHS in all contexts.
-
-function setter2(value) {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = value;
-  return 1000000;
-}
-
-function ConstrS2() { }
-obj = Object.defineProperty(new ConstrS2(), "setterProperty", { set: setter2 });
-TestSetterInAllContexts(setter2, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter2, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter with too few arguments without a return in all contexts.
-
-function setter3() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = setterArgument;
-}
-
-function ConstrS3() { }
-obj = Object.defineProperty(new ConstrS3(), "setterProperty", { set: setter3 });
-TestSetterInAllContexts(setter3, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter3, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter with too few arguments with a return in all contexts.
-
-function setter4() {
-  assertSame(obj, this);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = setterArgument;
-  return 2000000;
-}
-
-function ConstrS4() { }
-obj = Object.defineProperty(new ConstrS4(), "setterProperty", { set: setter4 });
-TestSetterInAllContexts(setter4, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter4, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter with too many arguments without a return in all contexts.
-
-function setter5(value, foo) {
-  assertSame(obj, this);
-  assertEquals(undefined, foo);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = value;
-}
-
-function ConstrS5() { }
-obj = Object.defineProperty(new ConstrS5(), "setterProperty", { set: setter5 });
-TestSetterInAllContexts(setter5, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter5, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter with too many arguments with a return in all contexts.
-
-function setter6(value, foo) {
-  assertSame(obj, this);
-  assertEquals(undefined, foo);
-  accessorCallCount++;
-  forceDeopt.deopt;
-  setterValue = value;
-  return 3000000;
-}
-
-function ConstrS6() { }
-obj = Object.defineProperty(new ConstrS6(), "setterProperty", { set: setter6 });
-TestSetterInAllContexts(setter6, obj, false);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter6, obj, false);
-
-// -----------------------------------------------------------------------------
-// Test setter which throws from optimized code.
-
-function setter7(value) {
-  accessorCallCount++;
-  forceDeopt.deopt;
-  if (accessorCallCount == 4) { 123 in null; }
-  setterValue = value;
-}
-
-function ConstrS7() { }
-obj = Object.defineProperty(new ConstrS7(), "setterProperty", { set: setter7 });
-TestSetterInAllContexts(setter7, obj, true);
-obj = Object.create(obj);
-TestSetterInAllContexts(setter7, obj, true);