[Bug target/86383] [9 Regression] arm-netbsdelf cross compiler fails in selftests

["richard.earnshaw at arm dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86383

--- Comment #3 from richard.earnshaw at arm dot com ---
On 06/07/18 11:32, Kamil Rytarowski wrote:
> On 04.07.2018 20:55, rearnsha at gcc dot gnu.org wrote:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86383
>>
>> --- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
>> I'm not sure how relevant the netbsd-elf port is these days.  I believe they've
>> now moved onto an EABI based ABI.  But no GCC port of that has been
>> contributed.
>>
> 
> NetBSD switched on newer ARM CPUs to EABI and keeps compat with OABI. A
> user is free to build either EABI and OABI for ARMv4+ CPUs. Older pre
> ARMv4 CPUs use OABI only.
> 

GCC-9 will drop support for pre-armv4 CPUs.  Such support has been
marked as deprecated for about 3 years now.
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Subject: [Bug target/84711] AArch32 big-endian fails when taking subreg of a vector mode to a scalar mode.
Date: Fri, 06 Jul 2018 10:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84711

--- Comment #14 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Fri Jul  6 10:44:35 2018
New Revision: 262472

URL: https://gcc.gnu.org/viewcvs?rev=262472&root=gcc&view=rev
Log:
Require sse for testcase on i686.

        PR target/84711
        * gcc.dg/vect/pr84711.c: Add -msse for i686 targets.


Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/pr84711.c
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86417] [9 Regression] FAIL: libgomp.fortran/alloc-comp-3.f90   -O0  (test for excess errors)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86417

--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Thomas Koenig from comment #4)
> The idea of the warning is to ensure that we have
> Location information everywhere, and that patches
> Which do not correctly set the location should cause
> something visible during testing. We do not have this for
> release.

Thanks for the explanation. Makes sense.

Do you have any idea what might have caused the regression?


> We should take care to always regression test libgomp.fortran
> as well...

Yes, I finally got into this habit, after repeatedly breaking libgomp tests
with my patches without noticing it.

I also tried to document how to do this at the bottom of this wiki page:

https://gcc.gnu.org/wiki/TestCaseWriting

It took me a while to figure out how to actually run the Fortran subset of the
libgomp suite (which is not very well documented, or I'm too stupid to find
it).
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Subject: Re: [Bug target/86383] [9 Regression] arm-netbsdelf cross compiler fails in selftests
To: "Richard Earnshaw (lists)" <Richard.Earnshaw@arm.com>, "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>, gcc-bugs@gcc.gnu.org
References: <bug-86383-4@http.gcc.gnu.org/bugzilla/> <bug-86383-4-roe7g6Jp7o@http.gcc.gnu.org/bugzilla/> <ab84a63d-cc85-0cfd-a3a6-d6deab95488c@gmx.com> <471e8255-162f-4cdd-45bc-274271cfe973@arm.com>
From: Kamil Rytarowski <n54@gmx.com>
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From: Kamil Rytarowski <n54@gmx.com>
To: "Richard Earnshaw (lists)" <Richard.Earnshaw@arm.com>,
 "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>,
 gcc-bugs@gcc.gnu.org
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Subject: Re: [Bug target/86383] [9 Regression] arm-netbsdelf cross compiler
 fails in selftests
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On 06.07.2018 12:38, Richard Earnshaw (lists) wrote:
> On 06/07/18 11:32, Kamil Rytarowski wrote:
>> On 04.07.2018 20:55, rearnsha at gcc dot gnu.org wrote:
>>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86383
>>>
>>> --- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
>>> I'm not sure how relevant the netbsd-elf port is these days.  I believe they've
>>> now moved onto an EABI based ABI.  But no GCC port of that has been
>>> contributed.
>>>
>>
>> NetBSD switched on newer ARM CPUs to EABI and keeps compat with OABI. A
>> user is free to build either EABI and OABI for ARMv4+ CPUs. Older pre
>> ARMv4 CPUs use OABI only.
>>
> 
> GCC-9 will drop support for pre-armv4 CPUs.  Such support has been
> marked as deprecated for about 3 years now.
> 

We verify these ports on real hardware.

NetBSD/shark is prepared to be switched to Clang/LLVM as GCC is
obsoleting it and surprisingly LLVM soon might have support for a wider
range of ARM CPUs.


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