rs6000.h (PROMOTE_MODE): Correct test for when -m32 -mpowerpc64 is active.

	* config/rs6000/rs6000.h (PROMOTE_MODE): Correct test for when -m32
	-mpowerpc64 is active.

From-SVN: r219750

gcc/ChangeLog

+2015-01-16  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* config/rs6000/rs6000.h (PROMOTE_MODE): Correct test for when -m32
+	-mpowerpc64 is active.
+
 2015-01-16  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	PR middle-end/64353

gcc/config/rs6000/rs6000.h

@@ -733,7 +733,7 @@ extern unsigned char rs6000_recip_bits[];
 
 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE)	\
   if (GET_MODE_CLASS (MODE) == MODE_INT		\
-      && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
+      && GET_MODE_SIZE (MODE) < (TARGET_32BIT ? 4 : 8)) \
     (MODE) = TARGET_32BIT ? SImode : DImode;
 
 /* Define this if most significant bit is lowest numbered