PR83680: Inverted test in arm_vectorize_vec_perm_const

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR target/83680
	* config/arm/arm.c (arm_vectorize_vec_perm_const): Fix inverted
	test for d.testing.

From-SVN: r256251

gcc/ChangeLog

+2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	PR target/83680
+	* config/arm/arm.c (arm_vectorize_vec_perm_const): Fix inverted
+	test for d.testing.
+
 2018-01-04  Peter Bergner  <bergner@vnet.ibm.com>
 
 	PR target/83387

gcc/config/arm/arm.c

@@ -29440,7 +29440,7 @@ arm_vectorize_vec_perm_const (machine_mode vmode, rtx target, rtx op0, rtx op1,
 
   d.perm.new_vector (sel.encoding (), d.one_vector_p ? 1 : 2, nelt);
 
-  if (d.testing_p)
+  if (!d.testing_p)
     return arm_expand_vec_perm_const_1 (&d);
 
   d.target = gen_raw_REG (d.vmode, LAST_VIRTUAL_REGISTER + 1);