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

src/mips/assembler-mips.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 460 matching lines @@
     return o >> 2;
   }
   uint32_t jump_address(Label* L);
 
   // Puts a labels target address at the given position.
   // The high 8 bits are set to zero.
   void label_at_put(Label* L, int at_offset);
 
   // Read/Modify the code target address in the branch/call instruction at pc.
   static Address target_address_at(Address pc);
-  static void set_target_address_at(Address pc, Address target);
+  static void set_target_address_at(Address pc,
+                                    Address target,
+                                    ICacheFlushMode icache_flush_mode =
+                                        FLUSH_ICACHE_IF_NEEDED);
   // On MIPS there is no Constant Pool so we skip that parameter.
   INLINE(static Address target_address_at(Address pc,
                                           ConstantPoolArray* constant_pool)) {
     return target_address_at(pc);
   }
   INLINE(static void set_target_address_at(Address pc,
                                            ConstantPoolArray* constant_pool,
-                                           Address target)) {
-    set_target_address_at(pc, target);
+                                           Address target,
+                                           ICacheFlushMode icache_flush_mode =
+                                               FLUSH_ICACHE_IF_NEEDED)) {
+    set_target_address_at(pc, target, icache_flush_mode);
   }
   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);
 
   static void JumpLabelToJumpRegister(Address pc);
 
   static void QuietNaN(HeapObject* nan);
 
@@ skipping 716 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_