[proxies] InstanceOfStub should bailout to %HasInPrototypeChain for proxies.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 2570 matching lines @@
   __ bind(&function_prototype_valid);
   __ AssertNotSmi(function_prototype);
 
   // Update the global instanceof cache with the current {object} map and
   // {function}.  The cached answer will be set when it is known below.
   __ StoreRoot(function, scratch, Heap::kInstanceofCacheFunctionRootIndex);
   __ StoreRoot(object_map, scratch, Heap::kInstanceofCacheMapRootIndex);
 
   // Loop through the prototype chain looking for the {function} prototype.
   // Assume true, and change to false if not found.
-  Register const object_prototype = object_map;
-  Label done, loop;
+  Label done, loop, proxy_case;
   __ mov(eax, isolate()->factory()->true_value());
   __ bind(&loop);
-  __ mov(object_prototype, FieldOperand(object_map, Map::kPrototypeOffset));
-  __ cmp(object_prototype, function_prototype);
+  __ CmpInstanceType(object_map, JS_PROXY_TYPE);
+  __ j(equal, &proxy_case, Label::kNear);
+  __ mov(object, FieldOperand(object_map, Map::kPrototypeOffset));
+  __ cmp(object, function_prototype);
   __ j(equal, &done, Label::kNear);
-  __ cmp(object_prototype, isolate()->factory()->null_value());
-  __ mov(object_map, FieldOperand(object_prototype, HeapObject::kMapOffset));
+  __ cmp(object, isolate()->factory()->null_value());
+  __ mov(object_map, FieldOperand(object, HeapObject::kMapOffset));
   __ j(not_equal, &loop);
   __ mov(eax, isolate()->factory()->false_value());
   __ bind(&done);
   __ StoreRoot(eax, scratch, Heap::kInstanceofCacheAnswerRootIndex);
   __ ret(0);
 
-  // Slow-case: Call the runtime function.
+  // Proxy-case: Call the %HasInPrototypeChain runtime function.
+  __ bind(&proxy_case);
+  __ PopReturnAddressTo(scratch);
+  __ Push(object);
+  __ Push(function_prototype);
+  __ PushReturnAddressFrom(scratch);
+  // Invalidate the instanceof cache.
+  __ Move(eax, Immediate(Smi::FromInt(0)));
+  __ StoreRoot(eax, scratch, Heap::kInstanceofCacheFunctionRootIndex);
+  __ TailCallRuntime(Runtime::kHasInPrototypeChain, 2, 1);
+
+  // Slow-case: Call the %InstanceOf runtime function.
   __ bind(&slow_case);
-  __ pop(scratch);    // Pop return address.
-  __ push(object);    // Push {object}.
-  __ push(function);  // Push {function}.
-  __ push(scratch);   // Push return address.
+  __ PopReturnAddressTo(scratch);
+  __ Push(object);
+  __ Push(function);
+  __ PushReturnAddressFrom(scratch);
   __ TailCallRuntime(Runtime::kInstanceOf, 2, 1);
 }
 
 
 // -------------------------------------------------------------------------
 // StringCharCodeAtGenerator
 
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   // If the receiver is a smi trigger the non-string case.
   STATIC_ASSERT(kSmiTag == 0);
@@ skipping 3033 matching lines @@
                            Operand(ebp, 7 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32