Add instanceof stub for ARM.

src/arm/ic-arm.cc

Index: src/arm/ic-arm.cc
===================================================================
--- src/arm/ic-arm.cc	(revision 2127)
+++ src/arm/ic-arm.cc	(working copy)
@@ -223,9 +223,7 @@
   // Check for number.
   __ tst(r1, Operand(kSmiTagMask));
   __ b(eq, &number);
-  __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset));
-  __ ldrb(r3, FieldMemOperand(r3, Map::kInstanceTypeOffset));
-  __ cmp(r3, Operand(HEAP_NUMBER_TYPE));
+  __ CompareObjectType(r1, r3, r3, HEAP_NUMBER_TYPE);
   __ b(ne, &non_number);
   __ bind(&number);
   StubCompiler::GenerateLoadGlobalFunctionPrototype(
@@ -272,9 +270,7 @@
   __ b(eq, miss);
 
   // Check that the value is a JSFunction.
-  __ ldr(r0, FieldMemOperand(r1, HeapObject::kMapOffset));
-  __ ldrb(r0, FieldMemOperand(r0, Map::kInstanceTypeOffset));
-  __ cmp(r0, Operand(JS_FUNCTION_TYPE));
+  __ CompareObjectType(r1, r0, r0, JS_FUNCTION_TYPE);
   __ b(ne, miss);
 
   // Check that the function has been loaded.
@@ -312,10 +308,8 @@
   __ tst(r1, Operand(kSmiTagMask));
   __ b(eq, &miss);
 
-  // Check that the receiver is a valid JS object.
-  __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset));
-  __ ldrb(r0, FieldMemOperand(r3, Map::kInstanceTypeOffset));
-  __ cmp(r0, Operand(FIRST_JS_OBJECT_TYPE));
+  // Check that the receiver is a valid JS object.  Put the map in r3.
+  __ CompareObjectType(r1, r3, r0, FIRST_JS_OBJECT_TYPE);
   __ b(lt, &miss);
 
   // If this assert fails, we have to check upper bound too.
@@ -392,9 +386,7 @@
   __ ldr(r2, MemOperand(sp, argc * kPointerSize));  // receiver
   __ tst(r2, Operand(kSmiTagMask));
   __ b(eq, &invoke);
-  __ ldr(r3, FieldMemOperand(r2, HeapObject::kMapOffset));
-  __ ldrb(r3, FieldMemOperand(r3, Map::kInstanceTypeOffset));
-  __ cmp(r3, Operand(JS_GLOBAL_OBJECT_TYPE));
+  __ CompareObjectType(r2, r3, r3, JS_GLOBAL_OBJECT_TYPE);
   __ b(eq, &global);
   __ cmp(r3, Operand(JS_BUILTINS_OBJECT_TYPE));
   __ b(ne, &invoke);
@@ -447,10 +439,8 @@
   __ tst(r0, Operand(kSmiTagMask));
   __ b(eq, &miss);
 
-  // Check that the receiver is a valid JS object.
-  __ ldr(r3, FieldMemOperand(r0, HeapObject::kMapOffset));
-  __ ldrb(r1, FieldMemOperand(r3, Map::kInstanceTypeOffset));
-  __ cmp(r1, Operand(FIRST_JS_OBJECT_TYPE));
+  // Check that the receiver is a valid JS object.  Put the map in r3.
+  __ CompareObjectType(r0, r3, r1, FIRST_JS_OBJECT_TYPE);
   __ b(lt, &miss);
   // If this assert fails, we have to check upper bound too.
   ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);