public inbox for
 help / color / mirror / Atom feed
From: Alexandre Oliva <>
To: "Kewen.Lin" <>
Cc: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>,
	Mike Stump <>,
	David Edelsohn <>,
	Segher Boessenkool <>,
	Kewen Lin <>,
Subject: Re: [PATCH] [PR99708] [rs6000] don't expect __ibm128 with 64-bit long double
Date: Thu, 06 Apr 2023 22:48:22 -0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <> (Kewen Lin's message of "Thu, 6 Apr 2023 14:17:00 +0800")

On Apr  6, 2023, "Kewen.Lin" <> wrote:

> The reason why personally I preferred to fix it with xfail is that:

Got it.  I'm convinced, and I agree.

I tried an xfail in the initial dg-do, but that is no good for a compile
error, so I went for a dg-bogus xfail.  I hope that will still have the
intended effect when __ibm128 is defined when it currently isn't.

There is a dg-skip-if in this test on the trunk, covering some targets,
that IIRC are longdouble64, so maybe that's related and I could have
dropped them, but I wasn't sure, so I left them alone.

Regstrapped on ppc64-linux-gnu (pass), also tested on ppc64-vx7r2/gcc-12
(xfail).  Ok to install?

[PR99708] [rs6000] don't expect __ibm128 with 64-bit long double

When long double is 64-bit wide, as on vxworks, the rs6000 backend
defines neither the __ibm128 type nor the __SIZEOF_IBM128__ macro, but
pr99708.c expected both to be always defined.  Adjust the test to
match the implementation.

for  gcc/testsuite/ChangeLog

	* Accept lack of
	__SIZEOF_IBM128__ when long double is 64-bit wide.
 gcc/testsuite/ |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/ b/gcc/testsuite/
index 02b40ebc40d3d..66a5f88479330 100644
--- a/gcc/testsuite/
+++ b/gcc/testsuite/
@@ -14,7 +14,7 @@
 int main (void)
   if (__SIZEOF_FLOAT128__ != sizeof (__float128)
-      || __SIZEOF_IBM128__ != sizeof (__ibm128))
+      || __SIZEOF_IBM128__ != sizeof (__ibm128)) /* { dg-bogus "undeclared" "" { xfail longdouble64 } } */
     abort ();
   return 0;

Alexandre Oliva, happy hacker      
   Free Software Activist                       GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts.  Ask me about <>

  reply	other threads:[~2023-04-07  1:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-25  8:37 Alexandre Oliva
2023-03-27  7:05 ` Kewen.Lin
2023-04-06  4:43   ` Alexandre Oliva
2023-04-06  6:17     ` Kewen.Lin
2023-04-07  1:48       ` Alexandre Oliva [this message]
2023-04-07  9:49         ` Kewen.Lin
2023-04-15  2:55           ` Alexandre Oliva

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \
    --cc=ro@CeBiTec.Uni-Bielefeld.DE \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).