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Re: [PATCH,ARM][4/5] Fix calls in cortex-a7 pipeline description

From: Ramana Radhakrishnan <ramrad01 at arm dot com>
To: Greta Yorsh <Greta dot Yorsh at arm dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Richard Earnshaw <Richard dot Earnshaw at arm dot com>, "nickc at redhat dot com" <nickc at redhat dot com>, "paul at codesourcery dot com" <paul at codesourcery dot com>
Date: Tue, 29 Jan 2013 17:47:51 +0000
Subject: Re: [PATCH,ARM][4/5] Fix calls in cortex-a7 pipeline description
References: <000401cdfb27$da2f1f30$8e8d5d90$@yorsh@arm.com> <001601cdfb29$38714270$a953c750$@yorsh@arm.com>
Reply-to: ramrad01 at arm dot com

On 01/25/13 18:24, Greta Yorsh wrote:

Improve handling of call insns in cortex-a7 pipeline description, as
follows.

A call can dual-issue as a younger instruction but not as an older
instruction (from compiler's point of view). This patch adjusts the function
cortexa7_younger (used by the implementation of TARGET_SCHED_REORDER hook)
to return true for calls. The patch also updates the pipeline description
for calls to allow either dual-issue as a younger instruction or
single-issue.

gcc/

2013-01-03 Greta Yorsh <Greta.Yorsh@arm.com>

         * config/arm/arm.c (cortexa7_younger): Return true for TYPE_CALL.
         * config/arm/cortex-a7.md (cortex_a7_call): Update required units.

Ok.

Ramana

References:
- [PATCH,ARM][0/5] Updates to cortex-a7 pipeline description
  - From: Greta Yorsh
- [PATCH,ARM][4/5] Fix calls in cortex-a7 pipeline description
  - From: Greta Yorsh

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