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Date: Thu, 12 Aug 2021 16:19:35 +0000
From: Joseph Myers <joseph@codesourcery.com>
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To: Patrick McGehearty <patrick.mcgehearty@oracle.com>
CC: <gcc-patches@gcc.gnu.org>, <segher@kernel.crashing.org>
Subject: Re: [PATCH v3] Fix for powerpc64 long double complex divide
 failure
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On Thu, 12 Aug 2021, Patrick McGehearty via Gcc-patches wrote:

> This patch resolves the failure of powerpc64 long double complex divide
> in native ibm long double format after the patch "Practical improvement
> to libgcc complex divide".

This description is not consistent with the patch.

__divkc3 should always be using IEEE binary128 format, not IBM long 
double.  If this code is being built for IBM long double, something is 
wrong somewhere else.

Using the DFmode values probably makes sense for IBM long double, but not 
for IEEE binary128.

-- 
Joseph S. Myers
joseph@codesourcery.com