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[PATCH][ARM] Restrict store_minmaxsi

From: "Kyrylo Tkachov" <kyrylo dot tkachov at arm dot com>
To: <gcc-patches at gcc dot gnu dot org>
Cc: "Richard Earnshaw" <Richard dot Earnshaw at arm dot com>, "Ramana Radhakrishnan" <Ramana dot Radhakrishnan at arm dot com>
Date: Mon, 29 Apr 2013 12:33:33 +0100
Subject: [PATCH][ARM] Restrict store_minmaxsi

Hi all,

With this patch, we now only use the store_minmaxsi pattern when we're not
in a hot path.

We have found that this pattern can cause memory access bottlenecks in some
cases
(one benchmark was 45% slower when this pattern was enabled).

Tested arm-none-eabi on qemu.

Ok for trunk?

Thanks,
Kyrill

2013-04-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm.md (store_minmaxsi): Use only when
	optimize_insn_for_size_p.

Attachment: disable_store_minmaxsi.patch
Description: Binary data

Follow-Ups:
- Re: [PATCH][ARM] Restrict store_minmaxsi
  - From: Richard Earnshaw

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