On Mon, May 2, 2016 at 1:15 PM, Bernd Schmidt <bschm...@redhat.com> wrote:
> On 05/02/2016 01:12 PM, Uros Bizjak wrote:
>
>>> On 04/17/2016 08:59 PM, Jeff Law wrote:
>>>
>>>> invoke.texi has an independent list (probably incomplete! ;( of all the
>>>> things that -O2 enables.  Make sure to add -frename-registers to that
>>>> list and this is Ok for the trunk (gcc-7).
>>>
>>>
>>> This is what I committed.
>>
>>
>> The patch introduced bootstrap failure on alpha-linux-gnu.
>>
>> Non-bootstrapped build regresses:
>>
>> FAIL: gcc.dg/torture/pr69542.c   -O2  (test for excess errors)
>> FAIL: gcc.dg/torture/pr69542.c   -O2 -flto -fno-use-linker-plugin
>> -flto-partition=none  (test for excess errors)
>> FAIL: gcc.dg/torture/pr69542.c   -Os  (test for excess errors)
>>
>> where all failures are -fcompare-debug failures.
>
>
> Is the bootstrap failure also of this nature, or do you suspect something
> else?

I'm analysing the dumps, but I strongly suspect that it is the same problem.

(Please also note that the compiler includes Eric's PR 70886 patch [1]).

[1] https://gcc.gnu.org/ml/gcc-patches/2016-05/msg00026.html

Uros.

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