Remove support for branch hints from the IA32 and X64 assembler.

src/ia32/regexp-macro-assembler-ia32.h

 // Copyright 2008-2009 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 150 matching lines @@
 
   // The register containing the backtrack stack top. Provides a meaningful
   // name to the register.
   inline Register backtrack_stackpointer() { return ecx; }
 
   // Byte size of chars in the string to match (decided by the Mode argument)
   inline int char_size() { return static_cast<int>(mode_); }
 
   // Equivalent to a conditional branch to the label, unless the label
   // is NULL, in which case it is a conditional Backtrack.
-  void BranchOrBacktrack(Condition condition, Label* to, Hint hint = no_hint);
+  void BranchOrBacktrack(Condition condition, Label* to);
 
   // Call and return internally in the generated code in a way that
   // is GC-safe (i.e., doesn't leave absolute code addresses on the stack)
   inline void SafeCall(Label* to);
   inline void SafeReturn();
   inline void SafeCallTarget(Label* name);
 
   // Pushes the value of a register on the backtrack stack. Decrements the
   // stack pointer (ecx) by a word size and stores the register's value there.
   inline void Push(Register source);
@@ skipping 25 matching lines @@
   Label backtrack_label_;
   Label exit_label_;
   Label check_preempt_label_;
   Label stack_overflow_label_;
 };
 #endif  // V8_INTERPRETED_REGEXP
 
 }}  // namespace v8::internal
 
 #endif  // V8_IA32_REGEXP_MACRO_ASSEMBLER_IA32_H_