[arm] Fix testsuite nit when compiling for thumb2

In thumb2 we now generate a NEGS instruction rather than RSBS, so this
test needs updating.

	* gcc.target/arm/negdi-3.c: Update expected output to allow NEGS.

From-SVN: r277192

gcc/testsuite/ChangeLog

 2019-10-18  Richard Earnshaw  <rearnsha@arm.com>
 
+	* gcc.target/arm/negdi-3.c: Update expected output to allow NEGS.
+
+2019-10-18  Richard Earnshaw  <rearnsha@arm.com>
+
 	* gcc.dg/builtin-arith-overflow-3.c: New test.
 
 2019-10-18  Richard Earnshaw  <rearnsha@arm.com>

gcc/testsuite/gcc.target/arm/negdi-3.c

@@ -8,10 +8,10 @@ signed long long negdi_zero_extendsidi (unsigned int x)
 }
 /*
 Expected output:
-        rsbs    r0, r0, #0
+        rsbs    r0, r0, #0 (arm) | negs	r0, r0 (thumb2)
         sbc     r1, r1, r1
 */
-/* { dg-final { scan-assembler-times "rsb" 1 } } */
+/* { dg-final { scan-assembler-times "rsbs|negs" 1 } } */
 /* { dg-final { scan-assembler-times "sbc" 1 } } */
 /* { dg-final { scan-assembler-times "mov" 0 } } */
 /* { dg-final { scan-assembler-times "rsc" 0 } } */