Enable snapshots on MIPS. This is based on

src/mips/regexp-macro-assembler-mips.cc

 // 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 368 matching lines @@
 
     {
       AllowExternalCallThatCantCauseGC scope(masm_);
       ExternalReference function =
           ExternalReference::re_case_insensitive_compare_uc16(masm_->isolate());
       __ CallCFunction(function, argument_count);
     }
 
     // Restore regexp engine registers.
     __ MultiPop(regexp_registers_to_retain);
-    __ li(code_pointer(), Operand(masm_->CodeObject()));
+    __ li(code_pointer(), Operand(masm_->CodeObject()), CONSTANT_SIZE);
     __ lw(end_of_input_address(), MemOperand(frame_pointer(), kInputEnd));
 
     // Check if function returned non-zero for success or zero for failure.
     BranchOrBacktrack(on_no_match, eq, v0, Operand(zero_reg));
     // On success, increment position by length of capture.
     __ Addu(current_input_offset(), current_input_offset(), Operand(s3));
   }
 
   __ bind(&fallthrough);
 }
@@ skipping 291 matching lines @@
       __ bind(&init_loop);
       __ sw(a0, MemOperand(a1));
       __ Addu(a1, a1, Operand(-kPointerSize));
       __ Subu(a2, a2, Operand(1));
       __ Branch(&init_loop, ne, a2, Operand(zero_reg));
     }
 
     // Initialize backtrack stack pointer.
     __ lw(backtrack_stackpointer(), MemOperand(frame_pointer(), kStackHighEnd));
     // Initialize code pointer register
-    __ li(code_pointer(), Operand(masm_->CodeObject()));
+    __ li(code_pointer(), Operand(masm_->CodeObject()), CONSTANT_SIZE);
     // Load previous char as initial value of current character register.
     Label at_start;
     __ lw(a0, MemOperand(frame_pointer(), kAtStart));
     __ Branch(&at_start, ne, a0, Operand(zero_reg));
     LoadCurrentCharacterUnchecked(-1, 1);  // Load previous char.
     __ jmp(&start_label_);
     __ bind(&at_start);
     __ li(current_character(), Operand('\n'));
     __ jmp(&start_label_);
 
@@ skipping 64 matching lines @@
           current_character().bit() | backtrack_stackpointer().bit();
       __ MultiPush(regexp_registers_to_retain);
       CallCheckStackGuardState(a0);
       __ MultiPop(regexp_registers_to_retain);
       // If returning non-zero, we should end execution with the given
       // result as return value.
       __ Branch(&exit_label_, ne, v0, Operand(zero_reg));
 
       // String might have moved: Reload end of string from frame.
       __ lw(end_of_input_address(), MemOperand(frame_pointer(), kInputEnd));
-      __ li(code_pointer(), Operand(masm_->CodeObject()));
+      __ li(code_pointer(), Operand(masm_->CodeObject()), CONSTANT_SIZE);
       SafeReturn();
     }
 
     // Backtrack stack overflow code.
     if (stack_overflow_label_.is_linked()) {
       SafeCallTarget(&stack_overflow_label_);
       // Reached if the backtrack-stack limit has been hit.
       // Put regexp engine registers on stack first.
       RegList regexp_registers = current_input_offset().bit() |
           current_character().bit();
       __ MultiPush(regexp_registers);
       Label grow_failed;
       // Call GrowStack(backtrack_stackpointer(), &stack_base)
       static const int num_arguments = 3;
       __ PrepareCallCFunction(num_arguments, a0);
       __ mov(a0, backtrack_stackpointer());
       __ Addu(a1, frame_pointer(), Operand(kStackHighEnd));
       __ li(a2, Operand(ExternalReference::isolate_address()));
       ExternalReference grow_stack =
           ExternalReference::re_grow_stack(masm_->isolate());
       __ CallCFunction(grow_stack, num_arguments);
       // Restore regexp registers.
       __ MultiPop(regexp_registers);
       // If return NULL, we have failed to grow the stack, and
       // must exit with a stack-overflow exception.
       __ Branch(&exit_with_exception, eq, v0, Operand(zero_reg));
       // Otherwise use return value as new stack pointer.
       __ mov(backtrack_stackpointer(), v0);
       // Restore saved registers and continue.
-      __ li(code_pointer(), Operand(masm_->CodeObject()));
+      __ li(code_pointer(), Operand(masm_->CodeObject()), CONSTANT_SIZE);
       __ lw(end_of_input_address(), MemOperand(frame_pointer(), kInputEnd));
       SafeReturn();
     }
 
     if (exit_with_exception.is_linked()) {
       // If any of the code above needed to exit with an exception.
       __ bind(&exit_with_exception);
       // Exit with Result EXCEPTION(-1) to signal thrown exception.
       __ li(v0, Operand(EXCEPTION));
       __ jmp(&exit_label_);
@@ skipping 176 matching lines @@
 }
 
 
 // Private methods:
 
 void RegExpMacroAssemblerMIPS::CallCheckStackGuardState(Register scratch) {
   static const int num_arguments = 3;
   __ PrepareCallCFunction(num_arguments, scratch);
   __ mov(a2, frame_pointer());
   // Code* of self.
-  __ li(a1, Operand(masm_->CodeObject()));
+  __ li(a1, Operand(masm_->CodeObject()), CONSTANT_SIZE);
   // a0 becomes return address pointer.
   ExternalReference stack_guard_check =
       ExternalReference::re_check_stack_guard_state(masm_->isolate());
   CallCFunctionUsingStub(stack_guard_check, num_arguments);
 }
 
 
 // Helper function for reading a value out of a stack frame.
 template <typename T>
 static T& frame_entry(Address re_frame, int frame_offset) {
@@ skipping 198 matching lines @@
     ExternalReference function,
     int num_arguments) {
   // Must pass all arguments in registers. The stub pushes on the stack.
   ASSERT(num_arguments <= 4);
   __ li(code_pointer(), Operand(function));
   RegExpCEntryStub stub;
   __ CallStub(&stub);
   if (OS::ActivationFrameAlignment() != 0) {
     __ lw(sp, MemOperand(sp, 16));
   }
-  __ li(code_pointer(), Operand(masm_->CodeObject()));
+  __ li(code_pointer(), Operand(masm_->CodeObject()), CONSTANT_SIZE);
 }
 
 
 void RegExpMacroAssemblerMIPS::LoadCurrentCharacterUnchecked(int cp_offset,
                                                             int characters) {
   Register offset = current_input_offset();
   if (cp_offset != 0) {
     __ Addu(a0, current_input_offset(), Operand(cp_offset * char_size()));
     offset = a0;
   }
@@ skipping 27 matching lines @@
 }
 
 
 #undef __
 
 #endif  // V8_INTERPRETED_REGEXP
 
 }}  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS