Fix PR target/48328 part 1

From-SVN: r177705

gcc/ChangeLog

+2011-08-12  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>
+
+        PR target/48328
+	* config/arm/arm.h (CASE_VECTOR_SHORTEN_MODE): Fix distance
+	for tbh instructions.
+
 2011-08-12   Diego Novillo  <dnovillo@google.com>
 
 	* data-streamer.h (streamer_write_zero): Rename from output_zero.

gcc/config/arm/arm.h

@@ -1906,7 +1906,7 @@ typedef struct
       : min >= -4096 && max < 4096					\
       ? (ADDR_DIFF_VEC_FLAGS (body).offset_unsigned = 0, HImode)	\
       : SImode)								\
-   : ((min < 0 || max >= 0x2000 || !TARGET_THUMB2) ? SImode		\
+   : ((min < 0 || max >= 0x20000 || !TARGET_THUMB2) ? SImode		\
       : (max >= 0x200) ? HImode						\
       : QImode))