cunroll-15.c: Add XFAILs for arm and powerpc.

2018-10-04  Richard Biener  <rguenther@suse.de>

	* gcc.dg/tree-ssa/cunroll-15.c: Add XFAILs for arm and powerpc.

From-SVN: r264836

gcc/testsuite/ChangeLog

+2018-10-04  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/tree-ssa/cunroll-15.c: Add XFAILs for arm and powerpc.
+
 2018-10-03  Ian Lance Taylor  <iant@google.com>
 
 	* go.test/go-test.exp (go-set-goarch): Use amd64p32 on x32.

gcc/testsuite/gcc.dg/tree-ssa/cunroll-15.c

@@ -19,4 +19,5 @@ int Test(void)
 /* { dg-final { scan-tree-dump-times "optimized:\[^\n\r\]*completely unrolled" 2 "cunroll" } } */
 /* When SLP vectorization is enabled the following will fail because DOM
    doesn't know how to deal with the vectorized initializer of in.  */
-/* { dg-final { scan-tree-dump "return 1;" "optimized" } } */
+/* DOM also doesn't know to CSE in[1] with in = *.LC0 thus the list of targets this fails.  */
+/* { dg-final { scan-tree-dump "return 1;" "optimized" { xfail { arm*-*-* powerpc-*-* } } } } */