Support StringCharCodeAt in hydrogen/lithium.

src/ia32/lithium-ia32.h

 // 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 87 matching lines @@
 //   LOsrEntry
 //   LParameter
 //   LRegExpConstructResult
 //   LStackCheck
 //   LStoreKeyed
 //     LStoreKeyedFastElement
 //     LStoreKeyedGeneric
 //   LStoreNamed
 //     LStoreNamedField
 //     LStoreNamedGeneric
+//   LStringCharCodeAt
 //   LUnaryOperation
 //     LBitNotI
 //     LBranch
 //     LCallNew
 //     LCheckFunction
 //     LCheckInstanceType
 //     LCheckMap
 //     LCheckSmi
 //     LClassOfTest
 //     LClassOfTestAndBranch
@@ skipping 14 matching lines @@
 //     LJSArrayLength
 //     LLoadNamedField
 //     LLoadNamedGeneric
 //     LLoadFunctionPrototype
 //     LNumberTagD
 //     LNumberTagI
 //     LPushArgument
 //     LReturn
 //     LSmiTag
 //     LStoreGlobal
+//     LStringLength
 //     LTaggedToI
 //     LThrow
 //     LTypeof
 //     LTypeofIs
 //     LTypeofIsAndBranch
 //     LUnaryMathOperation
 //     LValueOf
 //   LUnknownOSRValue
 
 #define LITHIUM_ALL_INSTRUCTION_LIST(V)         \
@@ skipping 94 matching lines @@
   V(Return)                                     \
   V(ShiftI)                                     \
   V(SmiTag)                                     \
   V(SmiUntag)                                   \
   V(StackCheck)                                 \
   V(StoreGlobal)                                \
   V(StoreKeyedFastElement)                      \
   V(StoreKeyedGeneric)                          \
   V(StoreNamedField)                            \
   V(StoreNamedGeneric)                          \
+  V(StringCharCodeAt)                           \
+  V(StringLength)                               \
   V(SubI)                                       \
   V(TaggedToI)                                  \
   V(Throw)                                      \
   V(Typeof)                                     \
   V(TypeofIs)                                   \
   V(TypeofIsAndBranch)                          \
   V(UnaryMathOperation)                         \
   V(UnknownOSRValue)                            \
   V(ValueOf)
 
@@ skipping 1367 matching lines @@
 
 class LStoreKeyedGeneric: public LStoreKeyed {
  public:
   LStoreKeyedGeneric(LOperand* obj, LOperand* key, LOperand* val)
       : LStoreKeyed(obj, key, val) { }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedGeneric, "store-keyed-generic")
 };
 
 
+class LStringCharCodeAt: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LStringCharCodeAt(LOperand* string, LOperand* index) {
+    this->SetInputAt(0, string);
+    this->SetInputAt(1, index);
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
+  DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
+
+  LOperand* string() const { return this->InputAt(0); }
+  LOperand* index() const { return this->InputAt(1); }
+};
+
+
+class LStringLength: public LUnaryOperation<1> {
+ public:
+  explicit LStringLength(LOperand* string) : LUnaryOperation<1>(string) {}
+
+  DECLARE_CONCRETE_INSTRUCTION(StringLength, "string-length")
+  DECLARE_HYDROGEN_ACCESSOR(StringLength)
+};
+
+
 class LCheckFunction: public LUnaryOperation<0> {
  public:
   explicit LCheckFunction(LOperand* use) : LUnaryOperation<0>(use) { }
 
   DECLARE_CONCRETE_INSTRUCTION(CheckFunction, "check-function")
   DECLARE_HYDROGEN_ACCESSOR(CheckFunction)
 };
 
 
 class LCheckInstanceType: public LUnaryOperation<0> {
@@ skipping 379 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_IA32_H_