Refactor HCheckInstanceType to allow mask/tag tests.

src/hydrogen.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 3778 matching lines @@
   expr->RecordTypeFeedback(oracle());
 
   if (TryArgumentsAccess(expr)) return;
 
   CHECK_ALIVE(VisitForValue(expr->obj()));
 
   HInstruction* instr = NULL;
   if (expr->IsArrayLength()) {
     HValue* array = Pop();
     AddInstruction(new(zone()) HCheckNonSmi(array));
-    AddInstruction(new(zone()) HCheckInstanceType(array,
-                                                  JS_ARRAY_TYPE,
-                                                  JS_ARRAY_TYPE));
+    AddInstruction(HCheckInstanceType::NewIsJSArray(array));
     instr = new(zone()) HJSArrayLength(array);
 
   } else if (expr->IsStringLength()) {
     HValue* string = Pop();
     AddInstruction(new(zone()) HCheckNonSmi(string));
-    AddInstruction(new(zone()) HCheckInstanceType(string,
-                                                  FIRST_STRING_TYPE,
-                                                  LAST_STRING_TYPE));
+    AddInstruction(HCheckInstanceType::NewIsString(string));
     instr = new(zone()) HStringLength(string);
   } else if (expr->IsStringAccess()) {
     CHECK_ALIVE(VisitForValue(expr->key()));
     HValue* index = Pop();
     HValue* string = Pop();
     HStringCharCodeAt* char_code = BuildStringCharCodeAt(string, index);
     AddInstruction(char_code);
     instr = new(zone()) HStringCharFromCode(char_code);
 
   } else if (expr->IsFunctionPrototype()) {
@@ skipping 994 matching lines @@
 
   } else {
     return Bailout("invalid lhs in count operation");
   }
 }
 
 
 HStringCharCodeAt* HGraphBuilder::BuildStringCharCodeAt(HValue* string,
                                                         HValue* index) {
   AddInstruction(new(zone()) HCheckNonSmi(string));
-  AddInstruction(new(zone()) HCheckInstanceType(
-      string, FIRST_STRING_TYPE, LAST_STRING_TYPE));
+  AddInstruction(HCheckInstanceType::NewIsString(string));
   HStringLength* length = new(zone()) HStringLength(string);
   AddInstruction(length);
   AddInstruction(new(zone()) HBoundsCheck(index, length));
   return new(zone()) HStringCharCodeAt(string, index);
 }
 
 
 HInstruction* HGraphBuilder::BuildBinaryOperation(BinaryOperation* expr,
                                                   HValue* left,
                                                   HValue* right) {
   TypeInfo info = oracle()->BinaryType(expr);
   HInstruction* instr = NULL;
   switch (expr->op()) {
     case Token::ADD:
       if (info.IsString()) {
         AddInstruction(new(zone()) HCheckNonSmi(left));
-        AddInstruction(new(zone()) HCheckInstanceType(
-            left, FIRST_STRING_TYPE, LAST_STRING_TYPE));
+        AddInstruction(HCheckInstanceType::NewIsString(left));
         AddInstruction(new(zone()) HCheckNonSmi(right));
-        AddInstruction(new(zone()) HCheckInstanceType(
-            right, FIRST_STRING_TYPE, LAST_STRING_TYPE));
+        AddInstruction(HCheckInstanceType::NewIsString(right));
         instr = new(zone()) HStringAdd(left, right);
       } else {
         instr = new(zone()) HAdd(left, right);
       }
       break;
     case Token::SUB:
       instr = new(zone()) HSub(left, right);
       break;
     case Token::MUL:
       instr = new(zone()) HMul(left, right);
@@ skipping 1240 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify();
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal