Fix the receiver check in the HandleFastApiCall builtin.

src/mips64/builtins-mips64.cc

Index: src/mips64/builtins-mips64.cc
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index 584946ab9fdcc204021d33d49d8fea517494ef21..3a9980beabd405d60fba64d5deba848350f98d32 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -1312,16 +1312,10 @@ static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
                 &receiver_check_passed);
 
   // Walk the prototype chain.
+  __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
   Label prototype_loop_start;
   __ bind(&prototype_loop_start);
 
-  // End if the receiver is null or if it's a hidden type.
-  __ JumpIfRoot(receiver, Heap::kNullValueRootIndex, receiver_check_failed);
-  __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ lwu(scratch, FieldMemOperand(map, Map::kBitField3Offset));
-  __ DecodeField<Map::IsHiddenPrototype>(scratch);
-  __ Branch(receiver_check_failed, ne, scratch, Operand(zero_reg));
-
   // Get the constructor, if any.
   __ GetMapConstructor(constructor, map, scratch, scratch);
   Label next_prototype;
@@ -1350,9 +1344,16 @@ static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
         FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
   __ Branch(&function_template_loop);
 
-  // Load the next prototype and iterate.
+  // Load the next prototype.
   __ bind(&next_prototype);
   __ ld(receiver, FieldMemOperand(map, Map::kPrototypeOffset));
+  // End if the prototype is null or not hidden.
+  __ JumpIfRoot(receiver, Heap::kNullValueRootIndex, receiver_check_failed);
+  __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ lwu(scratch, FieldMemOperand(map, Map::kBitField3Offset));
+  __ DecodeField<Map::IsHiddenPrototype>(scratch);
+  __ Branch(receiver_check_failed, eq, scratch, Operand(zero_reg));
+  // Iterate.
   __ Branch(&prototype_loop_start);
 
   __ bind(&receiver_check_passed);