Mark x86_64 only tests as such.

2018-12-02  Andi Kleen  <ak@linux.intel.com>

	* gcc.target/i386/returninst1.c: Run on 64bit only.
	* gcc.target/i386/returninst2.c: Dito.
	* gcc.target/i386/returninst3.c: Dito.

From-SVN: r266733

gcc/testsuite/ChangeLog

+2018-12-02  Andi Kleen  <ak@linux.intel.com>
+
+	* gcc.target/i386/returninst1.c: Run on 64bit only.
+	* gcc.target/i386/returninst2.c: Dito.
+	* gcc.target/i386/returninst3.c: Dito.
+
 2018-12-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/88278

gcc/testsuite/gcc.target/i386/returninst1.c

-/* { dg-do compile } */
+/* { dg-do compile { target { ! ia32 } } } */
 /* { dg-options "-pg -mfentry -minstrument-return=call -mrecord-return" } */
 /* { dg-final { scan-assembler "call.*__return__" } } */
 /* { dg-final { scan-assembler "section.*return_loc" } } */

gcc/testsuite/gcc.target/i386/returninst2.c

-/* { dg-do compile } */
+/* { dg-do compile { target { ! ia32 } } } */
 /* { dg-options "-pg -mfentry -minstrument-return=nop5 -mrecord-return" } */
 /* { dg-final { scan-assembler-times "0x0f, 0x1f, 0x44, 0x00, 0x00" 3 } } */
 /* { dg-final { scan-assembler "section.*return_loc" } } */

gcc/testsuite/gcc.target/i386/returninst3.c

-/* { dg-do compile } */
+/* { dg-do compile { target { ! ia32 } } } */
 /* { dg-options "-pg -mfentry -minstrument-return=call" } */
 /* { dg-final { scan-assembler-not "call.*__return__" } } */