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Re: [PATCH: ARM] PR 45335 Use ldrd and strd to access two consecutive words
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: Nick Clifton <nickc at redhat dot com>
- Cc: Carrot Wei <carrot at google dot com>, Paul Brook <paul at codesourcery dot com>, gcc-patches at gcc dot gnu dot org, ramana dot radhakrishnan at arm dot com
- Date: Tue, 11 Jan 2011 14:49:06 +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> <4D2C66FB.9090100@redhat.com>
On Tue, 2011-01-11 at 14:19 +0000, Nick Clifton wrote:
> 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.
>
No, this is not yet ready. It certainly isn't ready to go in this late
in gcc-4.6, which is now in regression-only fixes stage.
Sorry, I still think this needs more work, but I'm dashing off to yet
another meeting right now.
R.
> Happy New Year!
>
> Cheers
> Nick
>
>
>