pr70669.c: Use unary minus instead of addition.

2018-11-23  Vladimir Makarov  <vmakarov@redhat.com>

	* gcc.target/powerpc/pr70669.c: Use unary minus instead of
	addition.

From-SVN: r266421

gcc/testsuite/ChangeLog

+2018-11-23  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* gcc.target/powerpc/pr70669.c: Use unary minus instead of
+	addition.
+
 2018-11-23  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/87756

gcc/testsuite/gcc.target/powerpc/pr70669.c

@@ -13,7 +13,7 @@ void foo (TYPE *p, TYPE *q)
 #ifndef NO_ASM
   __asm__ (" # %0" : "+r" (r));
 #endif
-  *p = r + r;
+  *p = -r;
 }
 
 /* { dg-final { scan-assembler       "mfvsrd"    } } */