Introduce ENABLE_LATIN_1 compile flag

src/heap.h

 // Copyright 2012 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 681 matching lines @@
   //     result will be ASCII encoded, otherwise it will converted to two
   //     byte.
   //   - ...FromTwoByte initializes the string from a buffer that is two-byte
   //     encoded.  If the characters are all single-byte characters, the
   //     result will be converted to ASCII, otherwise it will be left as
   //     two-byte.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateStringFromOneByte(
+      Vector<const uint8_t> str,
+      PretenureFlag pretenure = NOT_TENURED);
+  // TODO(dcarney): remove this function.
+  MUST_USE_RESULT inline MaybeObject* AllocateStringFromOneByte(
       Vector<const char> str,
-      PretenureFlag pretenure = NOT_TENURED);
+      PretenureFlag pretenure = NOT_TENURED) {
+    return AllocateStringFromOneByte(Vector<const uint8_t>::cast(str),
+                                     pretenure);
+  }
   MUST_USE_RESULT inline MaybeObject* AllocateStringFromUtf8(
       Vector<const char> str,
       PretenureFlag pretenure = NOT_TENURED);
   MUST_USE_RESULT MaybeObject* AllocateStringFromUtf8Slow(
       Vector<const char> str,
       int non_ascii_start,
       PretenureFlag pretenure = NOT_TENURED);
   MUST_USE_RESULT MaybeObject* AllocateStringFromTwoByte(
       Vector<const uc16> str,
       PretenureFlag pretenure = NOT_TENURED);
 
   // Allocates a symbol in old space based on the character stream.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this function does not perform a garbage collection.
-  MUST_USE_RESULT inline MaybeObject* AllocateSymbol(Vector<const char> str,
-                                                     int chars,
-                                                     uint32_t hash_field);
+  MUST_USE_RESULT inline MaybeObject* AllocateSymbolFromUtf8(
+      Vector<const char> str,
+      int chars,
+      uint32_t hash_field);
 
-  MUST_USE_RESULT inline MaybeObject* AllocateAsciiSymbol(
-        Vector<const char> str,
+  MUST_USE_RESULT inline MaybeObject* AllocateOneByteSymbol(
+        Vector<const uint8_t> str,
         uint32_t hash_field);
 
   MUST_USE_RESULT inline MaybeObject* AllocateTwoByteSymbol(
         Vector<const uc16> str,
         uint32_t hash_field);
 
   template<typename T>
   static inline bool IsOneByte(T t, int chars);
 
   template<typename T>
@@ skipping 296 matching lines @@
 
   // Finds the symbol for string in the symbol table.
   // If not found, a new symbol is added to the table and returned.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if allocation
   // failed.
   // Please note this function does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* LookupUtf8Symbol(Vector<const char> str);
   MUST_USE_RESULT MaybeObject* LookupUtf8Symbol(const char* str) {
     return LookupUtf8Symbol(CStrVector(str));
   }
-  MUST_USE_RESULT MaybeObject* LookupOneByteSymbol(Vector<const char> str);
+  MUST_USE_RESULT MaybeObject* LookupOneByteSymbol(Vector<const uint8_t> str);
   MUST_USE_RESULT MaybeObject* LookupTwoByteSymbol(Vector<const uc16> str);
   MUST_USE_RESULT MaybeObject* LookupSymbol(String* str);
   MUST_USE_RESULT MaybeObject* LookupOneByteSymbol(
       Handle<SeqOneByteString> string, int from, int length);
 
   bool LookupSymbolIfExists(String* str, String** symbol);
   bool LookupTwoCharsSymbolIfExists(String* str, String** symbol);
 
   // Compute the matching symbol map for a string if possible.
   // NULL is returned if string is in new space or not flattened.
@@ skipping 1789 matching lines @@
   AssertNoAllocation no_alloc;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_