Darwin, testsuite - Fix pr71694 fail for m32.

This test fails for Darwin m32 because it's scanning for absence
of an instruction that's validly used in PIC code.  Fixed, in this
case, by using non-PIC codegen.

2019-06-13  Iain Sandoe  <iain@sandoe.co.uk>

	* g++.dg/pr71694.C: Use non-PIC codegen for Darwin m32.

From-SVN: r272257

gcc/testsuite/ChangeLog

+2019-06-13  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* g++.dg/pr71694.C: Use non-PIC codegen for Darwin m32.
+
 2019-06-13  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/89344

gcc/testsuite/g++.dg/pr71694.C

 /* { dg-do compile } */
 /* { dg-options "-O2 -fno-store-merging" } */
+/* { dg-additional-options "-fno-common -mdynamic-no-pic" { target { ia32 && { x86_64-*-darwin* i?86-*-darwin* } } } } */
 
 struct B {
     B() {}