[turbofan] Add support for accessor inlining.

test/mjsunit/compiler/deopt-accessors5.js

Index: test/mjsunit/compiler/deopt-accessors5.js
diff --git a/test/mjsunit/regress/regress-crbug-595615.js b/test/mjsunit/compiler/deopt-accessors5.js
similarity index 52%
copy from test/mjsunit/regress/regress-crbug-595615.js
copy to test/mjsunit/compiler/deopt-accessors5.js
index 33095013fa1726d140a411af963c789274ef6594..1b23c532dc169ade6c414c706632f94a877beb10 100644
--- a/test/mjsunit/regress/regress-crbug-595615.js
+++ b/test/mjsunit/compiler/deopt-accessors5.js
@@ -6,10 +6,18 @@
 
 "use strict";
 
-function f(o) {
-  return o.x();
+function f(v) {
+  %DeoptimizeFunction(test);
+  return 153;
 }
-try { f({ x: 1 }); } catch(e) {}
-try { f({ x: 1 }); } catch(e) {}
-%OptimizeFunctionOnNextCall(f);
-try { f({ x: 1 }); } catch(e) {}
+
+function test() {
+  var o = {};
+  o.__defineSetter__('q', f);
+  assertEquals(1, o.q = 1);
+}
+
+test();
+test();
+%OptimizeFunctionOnNextCall(test);
+test();