[PATCH][internal-fn.c][committed] Convert conditional compilation on WORD_REGISTER_OPERATIONS

[Kyrill Tkachov]

Hi all,

This is another instance of conditional compilation on WORD_REGISTER_OPERATIONS 
that's trivial to remove.

Bootstrapped and tested on arm, aarch64, x86_64.
Committing to trunk as obvious.

Thanks,
Kyrill

2016-04-28  Kyrylo Tkachov  <kyrylo.tkac...@arm.com>

    * internal-fn.c (expand_arith_overflow): Convert preprocessor check
    for WORD_REGISTER_OPERATIONS to runtime check.

diff --git a/gcc/internal-fn.c b/gcc/internal-fn.c
index 3ceaffe67eaa694afe35de8f7a13a182c46f05ff..2cbe198924c7b3aed34d52c0cc35612e09f5646c 100644
--- a/gcc/internal-fn.c
+++ b/gcc/internal-fn.c
@@ -1807,11 +1807,7 @@ expand_arith_overflow (enum tree_code code, gimple *stmt)
       /* For sub-word operations, retry with a wider type first.  */
       if (orig_precres == precres && precop <= BITS_PER_WORD)
 	{
-#if WORD_REGISTER_OPERATIONS
-	  int p = BITS_PER_WORD;
-#else
-	  int p = precop;
-#endif
+	  int p = WORD_REGISTER_OPERATIONS ? BITS_PER_WORD : precop;
 	  enum machine_mode m = smallest_mode_for_size (p, MODE_INT);
 	  tree optype = build_nonstandard_integer_type (GET_MODE_PRECISION (m),
 							uns0_p && uns1_p