Only send null or undefined as receiver for es5 natives, not generally

src/arm/builtins-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1225 matching lines @@
     // Change context eagerly in case we need the global receiver.
     __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
 
     // Do not transform the receiver for strict mode functions.
     __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
     __ ldr(r3, FieldMemOperand(r2, SharedFunctionInfo::kCompilerHintsOffset));
     __ tst(r3, Operand(1 << (SharedFunctionInfo::kStrictModeFunction +
                              kSmiTagSize)));
     __ b(ne, &shift_arguments);
 
-    // Do not transform the receiver for native (shared already in r2).
-    __ ldr(r2, FieldMemOperand(r2, SharedFunctionInfo::kScriptOffset));
-    __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
-    __ cmp(r2, r3);
-    __ b(eq, &shift_arguments);
-    __ ldr(r2, FieldMemOperand(r2, Script::kTypeOffset));
-    __ mov(r2, Operand(r2, ASR, kSmiTagSize));
-    __ cmp(r2, Operand(Script::TYPE_NATIVE));
-    __ b(eq, &shift_arguments);
+    // Do not transform the receiver for native (Compilerhints already in r3).
+    __ tst(r3, Operand(1 << (SharedFunctionInfo::kES5Native +
+                             kSmiTagSize)));
+    __ b(ne, &shift_arguments);
 
     // Compute the receiver in non-strict mode.
     __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2));
     __ ldr(r2, MemOperand(r2, -kPointerSize));
     // r0: actual number of arguments
     // r1: function
     // r2: first argument
     __ tst(r2, Operand(kSmiTagMask));
     __ b(eq, &convert_to_object);
 
-    // Heap::kUndefinedValueRootIndex is already in r3.
+    __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
     __ cmp(r2, r3);
     __ b(eq, &use_global_receiver);
     __ LoadRoot(r3, Heap::kNullValueRootIndex);
     __ cmp(r2, r3);
     __ b(eq, &use_global_receiver);
 
     __ CompareObjectType(r2, r3, r3, FIRST_JS_OBJECT_TYPE);
     __ b(lt, &convert_to_object);
     __ cmp(r3, Operand(LAST_JS_OBJECT_TYPE));
     __ b(le, &shift_arguments);
@@ skipping 148 matching lines @@
   // Compute the receiver.
   Label call_to_object, use_global_receiver, push_receiver;
   __ ldr(r0, MemOperand(fp, kRecvOffset));
 
   // Do not transform the receiver for strict mode functions.
   __ ldr(r2, FieldMemOperand(r1, SharedFunctionInfo::kCompilerHintsOffset));
   __ tst(r2, Operand(1 << (SharedFunctionInfo::kStrictModeFunction +
                            kSmiTagSize)));
   __ b(ne, &push_receiver);
 
-  // Do not transform the receiver for native (shared already in r1).
-  __ ldr(r1, FieldMemOperand(r1, SharedFunctionInfo::kScriptOffset));
-  __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
-  __ cmp(r1, r2);
-  __ b(eq, &push_receiver);
-  __ ldr(r1, FieldMemOperand(r1, Script::kTypeOffset));
-  __ mov(r1, Operand(r1, ASR, kSmiTagSize));
-  __ cmp(r1, Operand(Script::TYPE_NATIVE));
-  __ b(eq, &push_receiver);
+  // Do not transform the receiver for strict mode functions.
+  __ tst(r2, Operand(1 << (SharedFunctionInfo::kES5Native +
+                           kSmiTagSize)));
+  __ b(ne, &push_receiver);
 
   // Compute the receiver in non-strict mode.
   __ tst(r0, Operand(kSmiTagMask));
   __ b(eq, &call_to_object);
   __ LoadRoot(r1, Heap::kNullValueRootIndex);
   __ cmp(r0, r1);
   __ b(eq, &use_global_receiver);
-  // Heap::kUndefinedValueRootIndex is already in r2.
-  __ cmp(r0, r2);
+  __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
+  __ cmp(r0, r1);
   __ b(eq, &use_global_receiver);
 
   // Check if the receiver is already a JavaScript object.
   // r0: receiver
   __ CompareObjectType(r0, r1, r1, FIRST_JS_OBJECT_TYPE);
   __ b(lt, &call_to_object);
   __ cmp(r1, Operand(LAST_JS_OBJECT_TYPE));
   __ b(le, &push_receiver);
 
   // Convert the receiver to a regular object.
@@ skipping 183 matching lines @@
   __ bind(&dont_adapt_arguments);
   __ Jump(r3);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM