gas: run the hwcaps-bump tests with 64-bit sparc objects only.

gas/ChangeLog:

2016-11-23  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* testsuite/gas/sparc/sparc.exp (gas_64_check): Make sure the
	hwcaps-bump test is run with 64-bit objects.
diff --git a/gas/ChangeLog b/gas/ChangeLog
index fc50a3e..2715fcb 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2016-11-23  Jose E. Marchesi  <jose.marchesi@oracle.com>
+
+	* testsuite/gas/sparc/sparc.exp (gas_64_check): Make sure the
+	hwcaps-bump test is run with 64-bit objects.
+
 2016-11-23  Kuan-Lin Chen  <kuanlinchentw@gmail.com>
 
 	* config/tc-riscv.c: Add missing break.
diff --git a/gas/testsuite/gas/sparc/sparc.exp b/gas/testsuite/gas/sparc/sparc.exp
index 1dc8125..8311b7c 100644
--- a/gas/testsuite/gas/sparc/sparc.exp
+++ b/gas/testsuite/gas/sparc/sparc.exp
@@ -90,7 +90,7 @@
 	run_dump_test "pcrel64"
 	run_dump_test "plt64"
 	run_dump_test "gotop64"
-        run_list_test "hwcaps-bump" "-bump"
+        run_list_test "hwcaps-bump" "-64 -bump"
     }
 
     run_dump_test "synth"