MIPS: remove immediate constraint within CompareAndSwap.

base/atomicops_internals_mips_gcc.h

Index: base/atomicops_internals_mips_gcc.h
diff --git a/base/atomicops_internals_mips_gcc.h b/base/atomicops_internals_mips_gcc.h
index 9111a535b26f8fc0f173b91d7f59b40b5f3922fa..e206e03ae041349db26d9fd773634459a6a1b5c3 100644
--- a/base/atomicops_internals_mips_gcc.h
+++ b/base/atomicops_internals_mips_gcc.h
@@ -38,7 +38,7 @@ inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
                        "2:\n"
                        ".set pop\n"
                        : "=&r" (prev), "=m" (*ptr), "=&r" (tmp)
-                       : "Ir" (old_value), "r" (new_value), "m" (*ptr)
+                       : "r" (old_value), "r" (new_value), "m" (*ptr)
                        : "memory");
   return prev;
 }
@@ -167,7 +167,7 @@ inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
                        "2:\n"
                        ".set pop\n"
                        : "=&r" (prev), "=m" (*ptr), "=&r" (tmp)
-                       : "Ir" (old_value), "r" (new_value), "m" (*ptr)
+                       : "r" (old_value), "r" (new_value), "m" (*ptr)
                        : "memory");
   return prev;
 }