MIPS64: Fix exception return from regexp CheckStackGuardState().

src/mips64/regexp-macro-assembler-mips64.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 #ifndef V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_
 #define V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_
 
 #include "src/macro-assembler.h"
 #include "src/mips64/assembler-mips64-inl.h"
@@ skipping 72 matching lines @@
   virtual void SetRegister(int register_index, int to);
   virtual bool Succeed();
   virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
   virtual void ClearRegisters(int reg_from, int reg_to);
   virtual void WriteStackPointerToRegister(int reg);
   virtual bool CanReadUnaligned();
 
   // Called from RegExp if the stack-guard is triggered.
   // If the code object is relocated, the return address is fixed before
   // returning.
-  static int CheckStackGuardState(Address* return_address,
-                                  Code* re_code,
-                                  Address re_frame);
+  static int64_t CheckStackGuardState(Address* return_address, Code* re_code,
+                                      Address re_frame);
 
   void print_regexp_frame_constants();
 
  private:
 #if defined(MIPS_ABI_N64)
   // Offsets from frame_pointer() of function parameters and stored registers.
   static const int kFramePointer = 0;
 
   // Above the frame pointer - Stored registers and stack passed parameters.
   // Registers s0 to s7, fp, and ra.
@@ skipping 155 matching lines @@
   Label stack_overflow_label_;
   Label internal_failure_label_;
 };
 
 #endif  // V8_INTERPRETED_REGEXP
 
 
 }}  // namespace v8::internal
 
 #endif  // V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_