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Re: A potential bug in lra-constraints.c for special_memory_constraint?
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: Qing Zhao <qing dot zhao at oracle dot com>
- Cc: gcc-patches at gcc dot gnu dot org, David Miller <davem at davemloft dot net>
- Date: Wed, 12 Jul 2017 09:59:02 +0200
- Subject: Re: A potential bug in lra-constraints.c for special_memory_constraint?
- Authentication-results: sourceware.org; auth=none
- References: <1716229.J62mpvjAe0@polaris> <20170711.174035.1377666667845231722.davem@davemloft.net> <1B4A781A-504A-4816-9D0B-55F4385853BC@oracle.com>
> Actually, My major question is whether the current handling of
> special_memory_constraint in lra_constraints.c is correct or NOT based on
> GCC internal documentation. I thought that’s independent from this
> misaligned insns generation for M8, but looks I was wrong.
The answer is yes, the current handling is definitely correct, which probably
means that a special_memory_constraint ought not to be used here and that a
usual memory_constraint should work just fine.
--
Eric Botcazou