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Re: [PATCH][auto-inc-dec.c] Account for cost of move operation in FORM_PRE_ADD and FORM_POST_ADD cases

From: Jeff Law <law at redhat dot com>
To: Bernd Schmidt <bschmidt at redhat dot com>, Kyrill Tkachov <kyrylo dot tkachov at arm dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, richard dot sandiford at arm dot com
Date: Mon, 26 Oct 2015 15:42:15 -0600
Subject: Re: [PATCH][auto-inc-dec.c] Account for cost of move operation in FORM_PRE_ADD and FORM_POST_ADD cases
Authentication-results: sourceware.org; auth=none
References: <562E030B dot 7090908 at arm dot com> <562E0AB4 dot 7050809 at redhat dot com> <878u6pvcj6 dot fsf at e105548-lin dot cambridge dot arm dot com>

On 10/26/2015 10:07 AM, Richard Sandiford wrote:

Bernd Schmidt <bschmidt@redhat.com> writes:

I seem to recall Richard had a rewrite of all the autoinc code. I wonder
what happened to that?


Although it produced more autoincs, it didn't really improve performance
that much on the targets I was looking at at the time.

I'm afraid the patch is long lost now, and would probably be in an
uncertain copyright situation anyway.

Yup.  I wouldn't want to untangle that mess of legal opinions.

Out of curiosity, what was the basic premise behind what you did to getmore autoincs?

jeff

References:
- [PATCH][auto-inc-dec.c] Account for cost of move operation in FORM_PRE_ADD and FORM_POST_ADD cases
  - From: Kyrill Tkachov
- Re: [PATCH][auto-inc-dec.c] Account for cost of move operation in FORM_PRE_ADD and FORM_POST_ADD cases
  - From: Bernd Schmidt
- Re: [PATCH][auto-inc-dec.c] Account for cost of move operation in FORM_PRE_ADD and FORM_POST_ADD cases
  - From: Richard Sandiford

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