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Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words

From: Nick Clifton <nickc at redhat dot com>
To: Carrot Wei <carrot at google dot com>
Cc: Paul Brook <paul at codesourcery dot com>, Richard Earnshaw <rearnsha at arm dot com>, gcc-patches at gcc dot gnu dot org, ramana dot radhakrishnan at arm dot com
Date: Tue, 11 Jan 2011 14:19:39 +0000
Subject: Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words
References: <AANLkTim+nD_6m5PwDBkz0BVz1Ftr+DYyih17nXX5LMue@mail.gmail.com> <1283354531.25967.50.camel@e102346-lin.cambridge.arm.com> <AANLkTimrgAq8=-=mne6F5f4WJOv+x2N8RxxYeDMJGBAi@mail.gmail.com> <201010131201.18075.paul@codesourcery.com> <AANLkTi=obfc3R-sguDE4uaU_Ni+ciNz5gtPVKnG-JBVB@mail.gmail.com> <AANLkTinRP8nnpH3pf1tQQEGmf4jQBPDfC0nZsBE=PUwE@mail.gmail.com> <AANLkTik0xyadAWfpdX4h8E+1g4a9ExMrQjZ0uzwWukCR@mail.gmail.com> <AANLkTinsJxUc3H_naUR4cvYeioHim3dn4=BMscmiDokZ@mail.gmail.com> <AANLkTi=VYKUFBLhd==hLOx=xpPO8kGF7uu11A_-0hazv@mail.gmail.com> <AANLkTim0BRLUezvJ_U16jNunvvPR1Yn=cv2QdWwrxepQ@mail.gmail.com> <AANLkTi=rdaKqDmLppspFbPuVKdtuw-PiXF89+w3Jk6u=@mail.gmail.com>

Hi Carrot,

ChangeLog:
2010-10-16  Wei Guozhi<carrot@google.com>

        PR target/45335
        * gcc/config/arm/thumb2.md (thumb2_ldrd, thumb2_ldrd_reg1,
        thumb2_ldrd_reg2 and peephole2): New insn pattern and related
        peephole2.
        (thumb2_strd, thumb2_strd_reg1, thumb2_strd_reg2 and peephole2):
        New insn pattern and related peephole2.
        * gcc/config/arm/arm.c (thumb2_legitimate_ldrd_p): New function.
        (thumb2_check_ldrd_operands): New function.
        (thumb2_prefer_ldmstm): New function.
        * gcc/config/arm/arm-protos.h (thumb2_legitimate_ldrd_p): New prototype.
        (thumb2_check_ldrd_operands): New prototype.
        (thumb2_prefer_ldmstm): New prototype.
        * gcc/config/arm/ldmstm.md (ldm2_ia, stm2_ia, ldm2_db, stm2_db):
        Change the ldm/stm patterns with 2 words to ARM only.

Approved - please apply.

Happy New Year!

Cheers
  Nick

Follow-Ups:
- Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words
  - From: Richard Earnshaw
- Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words
  - From: Paul Brook

References:
- Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words
  - From: Carrot Wei

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