Implement inline %_IsJSProxy() for full codegen and Hydrogen

src/x64/full-codegen-x64.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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 3312 matching lines @@
 
   __ JumpIfSmi(rax, if_false);
   __ CmpObjectType(rax, JS_REGEXP_TYPE, rbx);
   PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
   Split(equal, if_true, if_false, fall_through);
 
   context()->Plug(if_true, if_false);
 }
 
 
+void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 1);
+
+  VisitForAccumulatorValue(args->at(0));
+
+  Label materialize_true, materialize_false;
+  Label* if_true = NULL;
+  Label* if_false = NULL;
+  Label* fall_through = NULL;
+  context()->PrepareTest(&materialize_true, &materialize_false, &if_true,
+                         &if_false, &fall_through);
+
+  __ JumpIfSmi(rax, if_false);
+  Register map = rbx;
+  __ movp(map, FieldOperand(rax, HeapObject::kMapOffset));
+  __ CmpInstanceType(map, FIRST_JS_PROXY_TYPE);
+  __ j(less, if_false);
+  __ CmpInstanceType(map, LAST_JS_PROXY_TYPE);
+  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+  Split(less_equal, if_true, if_false, fall_through);
+
+  context()->Plug(if_true, if_false);
+}
+
 
 void FullCodeGenerator::EmitIsConstructCall(CallRuntime* expr) {
   DCHECK(expr->arguments()->length() == 0);
 
   Label materialize_true, materialize_false;
   Label* if_true = NULL;
   Label* if_false = NULL;
   Label* fall_through = NULL;
   context()->PrepareTest(&materialize_true, &materialize_false,
                          &if_true, &if_false, &fall_through);
@@ skipping 1782 matching lines @@
   DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64