[AArch64 trivial] Don't define a macro when a variable will do

[James Greenhalgh]

Hi,

As title, this use of macros doesn't make much sense to me. We can just
do this as a const unsigned int.

Comitted as obvious as revision 236311.

OK?

Thanks,
James

---
2016-05-17  James Greenhalgh  <james.greenha...@arm.com>

        * config/aarch64/aarch64.c
        (aarch64_output_simd_mov_immediate): Make "buf_size" a variable
        rather than a macro.


diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index e081b16..986262b 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -11845,12 +11845,11 @@ aarch64_output_simd_mov_immediate (rtx const_vector,
         info.value = GEN_INT (0);
       else
 	{
-#define buf_size 20
+	  const unsigned int buf_size = 20;
 	  char float_buf[buf_size] = {'\0'};
 	  real_to_decimal_for_mode (float_buf,
 				    CONST_DOUBLE_REAL_VALUE (info.value),
 				    buf_size, buf_size, 1, mode);
-#undef buf_size
 
 	  if (lane_count == 1)
 	    snprintf (templ, sizeof (templ), "fmov\t%%d0, %s", float_buf);