Avoid flushing the icache unnecessarily when updating target addresses in code.

src/arm/assembler-arm.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 745 matching lines @@
   // Return the address in the constant pool of the code target address used by
   // the branch/call instruction at pc, or the object in a mov.
   INLINE(static Address target_constant_pool_address_at(
     Address pc, ConstantPoolArray* constant_pool));
 
   // Read/Modify the code target address in the branch/call instruction at pc.
   INLINE(static Address target_address_at(Address pc,
                                           ConstantPoolArray* constant_pool));
   INLINE(static void set_target_address_at(Address pc,
                                            ConstantPoolArray* constant_pool,
-                                           Address target));
+                                           Address target,
+                                           ICacheFlushMode icache_flush_mode =
+                                               FLUSH_ICACHE_IF_NEEDED));
   INLINE(static Address target_address_at(Address pc, Code* code)) {
     ConstantPoolArray* constant_pool = code ? code->constant_pool() : NULL;
     return target_address_at(pc, constant_pool);
   }
   INLINE(static void set_target_address_at(Address pc,
                                            Code* code,
-                                           Address target)) {
+                                           Address target,
+                                           ICacheFlushMode icache_flush_mode =
+                                               FLUSH_ICACHE_IF_NEEDED)) {
     ConstantPoolArray* constant_pool = code ? code->constant_pool() : NULL;
-    set_target_address_at(pc, constant_pool, target);
+    set_target_address_at(pc, constant_pool, target, icache_flush_mode);
   }
 
   // Return the code target address at a call site from the return address
   // of that call in the instruction stream.
   INLINE(static Address target_address_from_return_address(Address pc));
 
   // Given the address of the beginning of a call, return the address
   // in the instruction stream that the call will return from.
   INLINE(static Address return_address_from_call_start(Address pc));
 
@@ skipping 839 matching lines @@
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_ARM_H_