re PR target/84154 (PowerPC GCC 7 and 8 have regression in converting fp to…

re PR target/84154 (PowerPC GCC 7 and 8 have regression in converting fp to short/char and returning it)

2018-02-06  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/84154
	* config/rs6000/rs6000.md (su code attribute): Use "u" for
	unsigned_fix, not "s".

From-SVN: r257429

gcc/ChangeLog

+2018-02-06  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/84154
+	* config/rs6000/rs6000.md (su code attribute): Use "u" for
+	unsigned_fix, not "s".
+
 2018-02-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* configure.ac (gcc_fn_eh_frame_ro): New function.

gcc/config/rs6000/rs6000.md

@@ -550,7 +550,7 @@
 (define_code_attr su [(sign_extend	"s")
 		      (zero_extend	"u")
 		      (fix		"s")
-		      (unsigned_fix	"s")
+		      (unsigned_fix	"u")
 		      (float		"s")
 		      (unsigned_float	"u")])