rs6000.c (use_toc_relative_ref): Ignore type-limits warning.

2015-11-18  Alan Modra  <amodra@gmail.com>

        * config/rs6000/rs6000.c (use_toc_relative_ref): Ignore
        type-limits warning.

From-SVN: r230551

gcc/ChangeLog

+2015-11-18  Alan Modra  <amodra@gmail.com>
+
+	* config/rs6000/rs6000.c (use_toc_relative_ref): Ignore
+	type-limits warning.
+
 2015-11-18  Richard Sandiford  <richard.sandiford@arm.com>
 
 	PR bootstrap/68406

gcc/config/rs6000/rs6000.c

@@ -7994,12 +7994,17 @@ rs6000_cannot_force_const_mem (machine_mode mode ATTRIBUTE_UNUSED, rtx x)
 static bool
 use_toc_relative_ref (rtx sym, machine_mode mode)
 {
+/* Silence complaint that the POWERPC64_TOC_POINTER_ALIGNMENT test
+   is always true.  */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wtype-limits"
   return ((constant_pool_expr_p (sym)
 	   && ASM_OUTPUT_SPECIAL_POOL_ENTRY_P (get_pool_constant (sym),
 					       get_pool_mode (sym)))
 	  || (TARGET_CMODEL == CMODEL_MEDIUM
 	      && SYMBOL_REF_LOCAL_P (sym)
 	      && GET_MODE_SIZE (mode) <= POWERPC64_TOC_POINTER_ALIGNMENT));
+#pragma GCC diagnostic pop
 }
 
 /* Our implementation of LEGITIMIZE_RELOAD_ADDRESS.  Returns a value to