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RE: Problem with peephole optimizing the register

From: "Naveen H. S" <Naveen dot S at kpitcummins dot com>
To: Ian Lance Taylor <iant at google dot com>
Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
Date: Wed, 5 Oct 2011 06:18:41 +0000
Subject: RE: Problem with peephole optimizing the register
References: <5CD0E437A05A514A90A1B12527F331540E4182@KCHJEXMB02.kpit.com> <mcrhb4os4lw.fsf@coign.corp.google.com> <5CD0E437A05A514A90A1B12527F33154176B9EAB@KCHJEXMB02.kpit.com> <mcrzkhgoh2k.fsf@coign.corp.google.com>

Hi,

>> Show us the RTL and the define_peephole2.

Thanks for looking at the issue.
Please find attached the file tbit.txt which has complete information
of RTL pattern generated and defined peephole patterns.

>> From what you have described so far peep2_reg_dead_p ought to work.

To use far peep2_reg_dead_p; peephole2 patterns were defined.
far peep2_reg_dead_p masked the generation of tbit instruction completely.
Hence, tbit instructions were not at all generated in any instance.

>> Also, which version of gcc?

We are using gcc-4.5.1 version.

Thanks & Regards,
Naveen

Attachment: tbit.txt
Description: tbit.txt

Follow-Ups:
- Re: Problem with peephole optimizing the register
  - From: Ian Lance Taylor

References:
- Problem with peephole optimizing the register
  - From: Naveen H. S
- Re: Problem with peephole optimizing the register
  - From: Ian Lance Taylor

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