rs6000.c (rs6000_adjust_atomic_subword): Use BYTES_BIG_ENDIAN rather than…

rs6000.c (rs6000_adjust_atomic_subword): Use BYTES_BIG_ENDIAN rather than WORDS_BIG_ENDIAN to check for byte endianness.

	* config/rs6000/rs6000.c (rs6000_adjust_atomic_subword): Use
	BYTES_BIG_ENDIAN rather than WORDS_BIG_ENDIAN to check for byte
	endianness.

From-SVN: r212258

gcc/ChangeLog

+2014-07-03  Maciej W. Rozycki  <macro@codesourcery.com>
+
+	* config/rs6000/rs6000.c (rs6000_adjust_atomic_subword): Use
+	BYTES_BIG_ENDIAN rather than WORDS_BIG_ENDIAN to check for byte
+	endianness.
+
 2014-07-03  Zhenqiang Chen  <zhenqiang.chen@linaro.org>
 
 	* loop-invariant.c (struct invariant): Add a new member: eqno;

gcc/config/rs6000/rs6000.c

@@ -19897,7 +19897,7 @@ rs6000_adjust_atomic_subword (rtx orig_mem, rtx *pshift, rtx *pmask)
   shift = gen_reg_rtx (SImode);
   addr = gen_lowpart (SImode, addr);
   emit_insn (gen_rlwinm (shift, addr, GEN_INT (3), GEN_INT (shift_mask)));
-  if (WORDS_BIG_ENDIAN)
+  if (BYTES_BIG_ENDIAN)
     shift = expand_simple_binop (SImode, XOR, shift, GEN_INT (shift_mask),
 			         shift, 1, OPTAB_LIB_WIDEN);
   *pshift = shift;