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Date: Sat, 01 Sep 2012 14:32:00 -0000
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Subject: Re: [PATCH, middle-end]: Introduce TARGET_LEGITIMATE_COMBINED_INSN target hook
From: Uros Bizjak <ubizjak@gmail.com>
To: gcc-patches@gcc.gnu.org
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On Sun, Aug 26, 2012 at 11:00 AM, Uros Bizjak <ubizjak@gmail.com> wrote:

> Actually a v3 of TARGET_REJECT_COMBINED_INSN target hook.
>
> Changes:
> - rename the hook and reverse the return value
>
> 2012-08-25  Uros Bizjak  <ubizjak@gmail.com>
>
>         * target.def (legitimate_combined_insn): New target hook.
>         * doc/tm.texi.in (TARGET_LEGITIMATE_COMBINED_INSN): New hook.
>         * doc/tm.texi: Regenerated.
>         * combine.c (recog_for_combine): Call targetm.legitimate_combined_insn
>         to allow targets to reject combined insn.
>         * hooks.h (hook_bool_rtx_true): New.
>         * hooks.c (hook_bool_rtx_true): Ditto.
>
> Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32},
> also with target-dependant x86 patch that implements the hook.

I have committed the patch to mainline SVN, since the patch is
non-algorithmic and has no impact on non-x86 targets.

Uros.