Error message on target attribute on power target (PR target/79906)

2017-03-22  Martin Liska  <mliska@suse.cz>

	PR target/79906
	* config/rs6000/rs6000.c (rs6000_inner_target_options): Show
	error message instead of an ICE.
2017-03-22  Martin Liska  <mliska@suse.cz>

	PR target/79906
	* g++.dg/ext/mv8.C: Add power* targets.

From-SVN: r246345

gcc/ChangeLog

+2017-03-22  Martin Liska  <mliska@suse.cz>
+
+	PR target/79906
+	* config/rs6000/rs6000.c (rs6000_inner_target_options): Show
+	error message instead of an ICE.
+
 2017-03-21  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	* doc/extend.texi (6.11 Additional Floating Types): Revise.

gcc/config/rs6000/rs6000.c

@@ -39270,7 +39270,10 @@ rs6000_inner_target_options (tree args, bool attr_p)
     }
 
   else
-    gcc_unreachable ();
+    {
+      error ("attribute %<target%> argument not a string");
+      return false;
+    }
 
   return ret;
 }

gcc/testsuite/ChangeLog

+2017-03-22  Martin Liska  <mliska@suse.cz>
+
+	PR target/79906
+	* g++.dg/ext/mv8.C: Add power* targets.
+
 2017-03-21  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/79548

gcc/testsuite/g++.dg/ext/mv8.C

-// { dg-do compile { target i?86-*-* x86_64-*-* } }
+// { dg-do compile { target i?86-*-* x86_64-*-* powerpc*-*-* } }
 // { dg-options "" }
 
 __attribute__((target (11,12)))