[gcc(refs/users/meissner/heads/work048)] Force long double to be IBM 128-bit on PowerPC test, PR target/70117.

[gcc(refs/users/meissner/heads/work048)] Force long double to be IBM 128-bit on PowerPC test, PR target/70117.

[Michael Meissner]

https://gcc.gnu.org/g:2e3abd8d3d1b834692f7cedf8744974aff8c3f53

commit 2e3abd8d3d1b834692f7cedf8744974aff8c3f53
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Thu Apr 15 13:17:16 2021 -0400

    Force long double to be IBM 128-bit on PowerPC test, PR target/70117.
    
    This patch fixes the pr70117 test to use IBM 128-bit long double.
    
    I have run tests on a little endian power9 system with 3 compilers.  There
    were no regressions with these patches, and the two tests in the following
    patches now work if the default long double is not IBM 128-bit:
    
        *   One compiler using the default IBM 128-bit format;
        *   One compiler using the IEEE 128-bit format; (and)
        *   One compiler using 64-bit long doubles.
    
    I have also tested compilers on a big endian power8 system with a compiler
    defaulting to power8 code generation and another with the default cpu
    set.  There were no regressions.
    
    Can I check this patch into the master branch?
    
    gcc/testsuite/
    2021-04-15  Michael Meissner  <meissner@linux.ibm.com>
    
            PR target/70117
            * gcc.target/powerpc/pr70117.c: Force the long double type to use
            the IBM 128-bit format.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/pr70117.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/powerpc/pr70117.c b/gcc/testsuite/gcc.target/powerpc/pr70117.c
index 3bbd2c595e0..8a5fad1dee0 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr70117.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr70117.c
@@ -1,5 +1,7 @@
-/* { dg-do run { target { powerpc*-*-linux* powerpc*-*-darwin* powerpc*-*-aix* rs6000-*-* } } } */
-/* { dg-options "-std=c99 -mlong-double-128 -O2" } */
+/* { dg-do run } */
+/* { dg-require-effective-target ppc_long_double_override_ibm128 } */
+/* { dg-options "-std=c99 -O2" } */
+/* { dg-add-options ppc_long_double_override_ibm128 } */
 
 #include <float.h>