[PATCH, rs6000] Correct return value of check_p9modulo_hw_available

[HAO CHEN GUI via Gcc-patches]

Hi,
  This patch corrects return value of check_p9modulo_hw_available. It should
return 0 when p9modulo is supported.

  Bootstrapped and tested on powerpc64-linux BE and LE with no regressions.
Is this okay for trunk? Any recommendations? Thanks a lot.

ChangeLog
2022-08-04  Haochen Gui  <guih...@linux.ibm.com>

gcc/testsuite/
        * lib/target-supports.exp (check_p9modulo_hw_available): Correct return
        value.


patch.diff
diff --git a/gcc/testsuite/lib/target-supports.exp 
b/gcc/testsuite/lib/target-supports.exp
index 4ed7b25b9a4..04a2a8e8659 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -2288,7 +2288,7 @@ proc check_p9modulo_hw_available { } {
                {
                    int i = 5, j = 3, r = -1;
                    asm ("modsw %0,%1,%2" : "+r" (r) : "r" (i), "r" (j));
-                   return (r == 2);
+                   return (r != 2);
                }
            } $options
        }