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Date: Thu, 9 Mar 2023 16:16:21 -0600
From: Segher Boessenkool <segher@kernel.crashing.org>
To: Michael Meissner <meissner@linux.ibm.com>, gcc-patches@gcc.gnu.org,
        "Kewen.Lin" <linkw@linux.ibm.com>, David Edelsohn <dje.gcc@gmail.com>,
        Peter Bergner <bergner@linux.ibm.com>,
        Will Schmidt <will_schmidt@vnet.ibm.com>
Subject: Re: [PATCH 2/2] Rework 128-bit complex multiply and divide.
Message-ID: <20230309221621.GV25951@gate.crashing.org>
References: <Y9yfDC9bMaaB86ZP@toto.the-meissners.org> <Y9yhQQdUaM+z6IYD@toto.the-meissners.org> <20230303213544.GJ25951@gate.crashing.org> <ZAoFNio109zhqNt7@toto.the-meissners.org>
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On Thu, Mar 09, 2023 at 11:11:34AM -0500, Michael Meissner wrote:
> On Fri, Mar 03, 2023 at 03:35:44PM -0600, Segher Boessenkool wrote:
> > > +/* { dg-final { scan-assembler "bl __divtc3" } } */
> > 
> > This name depends on what object format and ABI is in use (some have an
> > extra leading underscore, or a dot, or whatever).
> 
> Yes it is needed if GCC is configured against an older GLIBC before the full
> IEEE 128-bit support was added.  For example, on my big endian test system, you
> get warnings if you switch the floating point format.  I would imagine it would
> also fail on little endian system with older libraries.

The regexp is not good enough, that is all.  Maybe
  {bl .?__divtc3}
or similar?  We have many examples in the tests already.


Segher