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

test/mjsunit/compiler/inline-accessors1.js

+// Copyright 2017 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
+
+(function() {
+  class O {
+    get x() {
+      return 1;
+    }
+  }
+  var o = new O;
+
+  function foo(o) {
+    try {
+      return o.x;
+    } catch (e) {
+      return 0;
+    }
+  }
+
+  assertEquals(1, foo(o));
+  assertEquals(1, foo(o));
+  %OptimizeFunctionOnNextCall(foo);
+  assertEquals(1, foo(o));
+})();
+
+(function() {
+  class O {
+    get x() {
+      %DeoptimizeFunction(foo);
+      return 1;
+    }
+  }
+  var o = new O;
+
+  function foo(o) {
+    try {
+      return o.x;
+    } catch (e) {
+      return 0;
+    }
+  }
+
+  assertEquals(1, foo(o));
+  assertEquals(1, foo(o));
+  %OptimizeFunctionOnNextCall(foo);
+  assertEquals(1, foo(o));
+})();
+
+(function() {
+  function bar(x) {
+    throw x;
+  }
+
+  class O {
+    get x() {
+      %DeoptimizeFunction(foo);
+      return bar("x");
+    }
+  }
+  var o = new O;
+
+  function foo(o) {
+    try {
+      return o.x;
+    } catch (e) {
+      return 0;
+    }
+  }
+
+  assertEquals(0, foo(o));
+  assertEquals(0, foo(o));
+  %OptimizeFunctionOnNextCall(foo);
+  assertEquals(0, foo(o));
+})();