re PR target/17280 (-mrelax and -O cause .uses directives in assembler to refer…

re PR target/17280 (-mrelax and -O cause .uses directives in assembler to refer to non-existent local labels)

gcc/testsuite/
	PR target/17280
	* gcc.target/sh/torture/pr17280.c: New.

From-SVN: r218998

gcc/testsuite/ChangeLog

+2014-12-21  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/17280
+	* gcc.target/sh/torture/pr17280.c: New.
+
 2014-12-19  Edward Smith-Rowland  <3dw4rd@verizon.net>
 
 	* g++.dg/cpp1y/feat-cxx98-neg.C: Enable __cpp_sized_deallocation test.

gcc/testsuite/gcc.target/sh/torture/pr17280.c

+/* Check that there are no problems with .uses labels when branch relaxation
+   is enabled.  */
+/* { dg-do assemble }  */
+/* { dg-additional-options "-mrelax" }  */
+
+extern void foo (int);
+
+int
+main (void)
+{
+  foo (7);
+  return 0;
+}