testsuite: Adjust fold-vec-extract-double.p9.c for powerpc BE [PR108810]

On BE, the extracted index for the leftmost element is 0
rather than 1, adjust the test case accordingly.

	PR testsuite/108810

gcc/testsuite/ChangeLog:

	* gcc.target/powerpc/fold-vec-extract-double.p9.c (testd_cst): Adjust
	the extracted index for BE.

diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-extract-double.p9.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-extract-double.p9.c
index 6c51503..880f424 100644 (file)
--- a/gcc/testsuite/gcc.target/powerpc/fold-vec-extract-double.p9.c
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-extract-double.p9.c
@@ -18,9 +18,15 @@ testd_var (vector double vd2, signed int si)
   return vec_extract (vd2, si);
 }
 
+#ifdef __BIG_ENDIAN__
+#define LEFTMOST_ELEMENT_INDEX 0
+#else
+#define LEFTMOST_ELEMENT_INDEX 1
+#endif
+
 double
 testd_cst (vector double vd2)
 {
-  return vec_extract (vd2, 1);
+  return vec_extract (vd2, LEFTMOST_ELEMENT_INDEX);
 }