This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH] (Partial) Implementation of simplificaiton of CSHIFT
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Steve Kargl <sgk at troutmask dot apl dot washington dot edu>
- Cc: Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>, "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 21 Nov 2015 11:19:22 -0800
- Subject: Re: [PATCH] (Partial) Implementation of simplificaiton of CSHIFT
- Authentication-results: sourceware.org; auth=none
- References: <20151120005836 dot GA53763 at troutmask dot apl dot washington dot edu> <20151120200947 dot GA61350 at troutmask dot apl dot washington dot edu> <CAGkQGi+bvMEzo_xk_=Ugu5GdrtV28peFvOQHnAAqAUoSTJaVxw at mail dot gmail dot com> <20151121162657 dot GA23304 at troutmask dot apl dot washington dot edu> <CAMe9rOqOJKti4JRKbRMB-QRRJ1HMCdNTL8F14GYo9uNNgOQBSQ at mail dot gmail dot com> <20151121182014 dot GA23753 at troutmask dot apl dot washington dot edu>
On Sat, Nov 21, 2015 at 10:20 AM, Steve Kargl
<sgk@troutmask.apl.washington.edu> wrote:
> On Sat, Nov 21, 2015 at 10:07:35AM -0800, H.J. Lu wrote:
>> On Sat, Nov 21, 2015 at 8:26 AM, Steve Kargl
>> <sgk@troutmask.apl.washington.edu> wrote:
>> > On Sat, Nov 21, 2015 at 11:41:51AM +0100, Paul Richard Thomas wrote:
>> >>
>> >> Just a couple of small typos:
>> >> "Unexpected expr_type cause an ICE" ; causes?
>> >> "! An array of derived types workd too." ; works?
>> >>
>> >> Apart from that it's OK for trunk.
>> >>
>> >> Thanks for the patch
>> >>
>> >
>> > Thanks for the the review. I don't have a clue as
>> > to how to do simplification for rank > 2. :(
>> >
>>
>> It breaks bootstrap:
>>
>> int dm;
>>
>> /* DIM is only useful for rank > 1, but deal with it here as one can
>> set DIM = 1 for rank = 1. */
>> if (dim)
>> {
>> if (!gfc_is_constant_expr (dim))
>> return NULL;
>> dm = mpz_get_si (dim->value.integer);
>> }
>> else
>> dm = 1;
>>
>> dm is set, but never used.
>>
>
> Perhaps, bootstrap needs to set appropriate warning levels.
https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00648.html
--
H.J.