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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 01:43:00 -0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <> (Kewen Lin's message of "Mon, 27 Mar 2023 15:05:33 +0800")

Hello, Kewen,

Thanks for the feedback.

On Mar 27, 2023, "Kewen.Lin" <> wrote:

> on 2023/3/25 16:37, Alexandre Oliva via Gcc-patches wrote:
>> 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.

> There is one patch from Mike to define type __ibm128 even without
> IEEE 128-bit floating point support, it's at the link:


> I would expect this issue would be gone if the adjustment on the
> support of type __ibm128 gets landed in future.

Yeah, the issue would then be gone, but the patch is compatible with
that proposed change: if __ibm128 and the corresponding SIZEOF macro are
defined, the proposed change is a no-op.

> So maybe we can just xfail this for longdouble64?  What do you
> think?

I wouldn't object to that, and I could even write and test the alternate
patch for that, but I fail to understand why that would be more
desirable.  Would you be so kind as to enlighten me?


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:[~2023-04-06  4:43 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 [this message]
2023-04-06  6:17     ` Kewen.Lin
2023-04-07  1:48       ` Alexandre Oliva
2023-04-07  9:49         ` Kewen.Lin
2023-04-15  2:55           ` Alexandre Oliva

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