Hi,
  This patch xfails a float128 comparison test case on powerpc64 that
fails due to a longstanding issue with floating-point compares.
  See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684 for more
information.

  The patch passed regression test on Power Linux platforms.

Thanks
Gui Haochen

ChangeLog
rs6000: xfail float128 comparison test case that fails on powerpc64.

This patch xfails a float128 comparison test case on powerpc64 that
fails due to a longstanding issue with floating-point compares.

See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684 for more information.

gcc/testsuite/
        PR target/108728
        * gcc.dg/torture/float128-cmp-invalid.c: Add xfail.

patch.diff
diff --git a/gcc/testsuite/gcc.dg/torture/float128-cmp-invalid.c 
b/gcc/testsuite/gcc.dg/torture/float128-cmp-invalid.c
index 1f675efdd61..f52686e0a24 100644
--- a/gcc/testsuite/gcc.dg/torture/float128-cmp-invalid.c
+++ b/gcc/testsuite/gcc.dg/torture/float128-cmp-invalid.c
@@ -1,5 +1,5 @@
 /* Test for "invalid" exceptions from __float128 comparisons.  */
-/* { dg-do run } */
+/* { dg-do run { xfail { powerpc*-*-* } } } */
 /* { dg-options "" } */
 /* { dg-require-effective-target __float128 } */
 /* { dg-require-effective-target base_quadfloat_support } */

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