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[PATCH v2, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Oleg Endo <oleg dot endo at t-online dot de>, Georg-Johann Lay <avr at gjlay dot de>, Richard Guenther <richard dot guenther at gmail dot com>, Jakub Jelinek <jakub at redhat dot com>, Yuri Rumyantsev <ysrumyan at gmail dot com>, Igor Zamyatin <izamyatin at gmail dot com>, "Joseph S. Myers" <joseph at codesourcery dot com>
Date: Sat, 25 Aug 2012 17:04:05 +0200
Subject: [PATCH v2, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
References: <CAFULd4Y2NZXtpiyqLFWJc1r-H7qmrN7Gtb6q99V0P_FNXjyd5w@mail.gmail.com> <50366DE2.1010502@gjlay.de> <1345746440.2312.23.camel@yam-132-YW-E178-FTW> <5036969F.1050507@gjlay.de> <CAFULd4afGfZdRLUphcuKymKGjywD_x0NmB8DzKnPjEfointOFQ@mail.gmail.com> <5038A118.6040904@gjlay.de> <CAFULd4bXQzT_1_ot9C2DDTrjzE0Q-c06cOCXOF=dszzc6aRDDg@mail.gmail.com>

Hello!

v2 patch differences:
- moves hook description text to target.def
- fixes error path to clear clobbers, as expected by recog_for_combine callers

2012-08-25  Uros Bizjak  <ubizjak@gmail.com>

	* target.def (reject_combined_insn): New target hook.
	* doc/tm.texi.in (TARGET_REJECT_COMBINED_INSN): New hook.
	* doc/tm.texi: Regenerated.
	* combine.c (recog_for_combine): Call targetm.reject_combined_insn
	to allow targets to reject combined insn.

Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32}.

OK for mainline?

Uros.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH v2, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Georg-Johann Lay
- Re: [PATCH v2, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Hans-Peter Nilsson

References:
- [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Uros Bizjak
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Georg-Johann Lay
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Oleg Endo
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Georg-Johann Lay
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Uros Bizjak
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Georg-Johann Lay
- Re: [PATCH, middle-end]: Introduce TARGET_REJECT_COMBINED_INSN target hook
  - From: Uros Bizjak

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