testsuite: Fix up pr116037.c test [PR116245]

The test FAILs on big endian targets, because VV is a vector of unsigned __int128
and VC vector of unsigned char and so ((VC) vv)[0] is 0x01 on little endian
but 0xff on big endian and PDP endian.
As I believe it is intentional to test it as it is written on little endian,
the following patch just adds another case for big endian and for other
endians instead of figuring out what exactly to fetch it fetches the whole
unsigned __int128 and casts it to unsigned char.  Not that pdp11 has
__int128 support...

2024-08-06  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/116037
	PR testsuite/116245
	* gcc.dg/torture/pr116037.c (foo): Fix up for big end middle endian.

diff --git a/gcc/testsuite/gcc.dg/torture/pr116037.c b/gcc/testsuite/gcc.dg/torture/pr116037.c
index 86ab50de4b2f3713c1cf12ba2a9d5f687de5f861..5bab24107fc2a330773099f15e5e6e459aebae5a 100644 (file)
--- a/gcc/testsuite/gcc.dg/torture/pr116037.c
+++ b/gcc/testsuite/gcc.dg/torture/pr116037.c
@@ -16,7 +16,13 @@ VL vl;
 VV
 foo (unsigned long long x, VV vv)
 {
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   x &= -((VC) vv)[0];
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+  x &= -((VC) vv)[sizeof (__int128) - 1];
+#else
+  x &= -(unsigned char) (vv[0]);
+#endif
   vi *= (VI) (VS){ -vs[0], vc[0], vs[1], vi[7], vs[7], vl[7], x, vi[5] };
   return x + vv;
 }