[gcc r13-3805] testsuite: Fix failure in test pr105586.c [PR107171]

[Surya Kumari Jangala]

https://gcc.gnu.org/g:7ca912b46e0eb45ebefeb0eda4c28afe1513d272

commit r13-3805-g7ca912b46e0eb45ebefeb0eda4c28afe1513d272
Author: Surya Kumari Jangala <jskumari@linux.ibm.com>
Date:   Thu Oct 13 09:18:15 2022 -0500

    testsuite: Fix failure in test pr105586.c [PR107171]
    
    The test pr105586.c fails on a big endian system when run in 32bit
    mode. The failure occurs as the test case does not guard against
    unsupported __int128.
    
    2022-10-13  Surya Kumari Jangala  <jskumari@linux.ibm.com>
    
    gcc/testsuite/
            PR testsuite/107171
            * gcc.target/powerpc/pr105586.c: Guard against unsupported
            __int128.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/pr105586.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/gcc.target/powerpc/pr105586.c b/gcc/testsuite/gcc.target/powerpc/pr105586.c
index bd397f58bc0..3f88a09983b 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr105586.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr105586.c
@@ -1,4 +1,5 @@
 /* { dg-options "-mdejagnu-tune=power4 -O2 -fcompare-debug -fno-if-conversion -fno-guess-branch-probability" } */
+/* { dg-require-effective-target int128 } */
 
 extern int bar(int i);