sp-switch.c: Match zero or more underscores in alt_stack symbol.

gcc/testsuite/
	* gcc.target/sh/sp-switch.c: Match zero or more underscores in
	alt_stack symbol.

From-SVN: r218706

gcc/testsuite/ChangeLog

+2014-12-13  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	* gcc.target/sh/sp-switch.c: Match zero or more underscores in
+	alt_stack symbol.
+
 2014-12-13  Tobias Burnus  <burnus@net-b.de>
 
 	* gfortran.dg/realloc_on_assign_21.f90: Update dg-error.

gcc/testsuite/gcc.target/sh/sp-switch.c

 /* { dg-do compile }  */
 /* { dg-final { scan-assembler "mov\tr0,r15" } } */
-/* { dg-final { scan-assembler ".long\t_alt_stack" } } */
+/* { dg-final { scan-assembler ".long\t\[_\]*alt_stack" } } */
 
 void *alt_stack;
 void f() __attribute__ ((interrupt_handler, sp_switch ("alt_stack")));