[PATCH] PowerPC Fix ibm128 defaults for pr70117.c test.

[Michael Meissner <meissner@linux.ibm.com>]

From 698d9fd8a5701fa4ed9690ddf71d57765921778c Mon Sep 17 00:00:00 2001
From: Michael Meissner <meissner@linux.ibm.com>
Date: Sun, 15 Nov 2020 00:48:23 -0500
Subject: [PATCH] PowerPC Fix ibm128 defaults for pr70117.c test.

This patch was previously posted as a combined patch with 2 other testsuite
patches.  I moved it to a separate patch.

This patch fixes up a failure that I saw when I built a compiler with the long
double default set to IEEE 128-bit instead of IBM 128-bit.  Now compilers with
either 128-bit long double default pass this test.  Can I check this into the
master branch?

gcc/testsuite/
2020-11-15  Michael Meissner  <meissner@linux.ibm.com>

	PR target/70117
	* gcc.target/powerpc/pr70117.c: Add support for long double being
	IEEE 128-bit.
---
 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..928efe39c7b 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr70117.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr70117.c
@@ -9,9 +9,11 @@
    128-bit floating point, because the type is not enabled on those
    systems.  */
 #define LDOUBLE __ibm128
+#define IBM128_MAX ((__ibm128) 1.79769313486231580793728971405301199e+308L)
 
 #elif defined(__LONG_DOUBLE_IBM128__)
 #define LDOUBLE long double
+#define IBM128_MAX LDBL_MAX
 
 #else
 #error "long double must be either IBM 128-bit or IEEE 128-bit"
@@ -75,10 +77,10 @@ main (void)
   if (__builtin_isnormal (ld))
     __builtin_abort ();
 
-  ld = LDBL_MAX;
+  ld = IBM128_MAX;
   if (!__builtin_isnormal (ld))
     __builtin_abort ();
-  ld = -LDBL_MAX;
+  ld = -IBM128_MAX;
   if (!__builtin_isnormal (ld))
     __builtin_abort ();
 
-- 
2.22.0


-- 
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meissner@linux.ibm.com, phone: +1 (978) 899-4797