[AArch64] Fix vrbit_1.c test failure

The vrbit_1 test which was missing a flag to disable code sharing.
Committed as obvious.

    testsuite/
	* gcc.target/aarch64/simd/vrbit_1.c: Add -fno-ipa-icf.

From-SVN: r278519

gcc/testsuite/ChangeLog

 2019-11-20  Wilco Dijkstra  <wdijkstr@arm.com>
 
+	* gcc.target/aarch64/simd/vrbit_1.c: Add -fno-ipa-icf.
+
+2019-11-20  Wilco Dijkstra  <wdijkstr@arm.com>
+
 	PR85678
 	* g++.dg/lto/odr-6_1.c: Add -fcommon.
 	* gcc.dg/alias-15.c: Likewise.

gcc/testsuite/gcc.target/aarch64/simd/vrbit_1.c

 /* { dg-do run } */
-/* { dg-options "-O2 --save-temps -fno-inline" } */
+/* { dg-options "-O2 --save-temps -fno-inline -fno-ipa-icf" } */
 
 #include <arm_neon.h>