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Re: [PATCH] Add option for dumping to stderr (issue6190057)
- From: Sharad Singhai <singhai at google dot com>
- To: Xinliang David Li <davidxl at google dot com>
- Cc: Richard Guenther <richard dot guenther at gmail dot com>, Gabriel Dos Reis <gdr at integrable-solutions dot net>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Andrew Pinski <pinskia at gmail dot com>
- Date: Tue, 18 Sep 2012 01:48:57 -0700
- Subject: Re: [PATCH] Add option for dumping to stderr (issue6190057)
- References: <20120509064637.22949A2081@nabu.mtv.corp.google.com> <CAAiZkiCAjA9cLMdqQeMgBuftxQ+oSa0m0yxohs33=qOCVBc17w@mail.gmail.com> <CAKxPW65MhmoGHQ0u2_0tsQc=9VfXCN4+afmqBULDKM=LwZqHvg@mail.gmail.com> <CAAkRFZLRb7ShAzoUSP9eQV8qchJxu_n=DrR19n0OLfKK9f-fSw@mail.gmail.com> <CAFiYyc1eo6=XjhAGz8MWKnVDUQKjkU=Kgfu38vRZyLq3XQSxng@mail.gmail.com> <CAAkRFZ+4b81ucyNgPmTFs25wD9Zm-4jcP02W9LWjjB=hQ-TO_A@mail.gmail.com> <CAFiYyc3o8bZjaMv1gZBMQJodSCH9UsWqohZ9Jw3szN+DXFjRgw@mail.gmail.com> <CAAkRFZJ9_yH-A74=aRkX2+zKgegg+SKobqJNu4a0fA7F90hTRg@mail.gmail.com> <CAAkRFZ+YyLKdsT8LSS88rd9-nxVuGrketu+-2C5qPp-98g1_vg@mail.gmail.com> <CAFiYyc0mfhEyPpY_+qv4StNPiatYKcUKz4vxbX=SeWNPCLJEYg@mail.gmail.com> <CAAkRFZJ3BvP3ytzkZgWqSSzkt+Z26n_zMJKEyhM_1KfEi5mCzQ@mail.gmail.com> <CAAiZkiDz5V2Nysn3AA4-GRgw6_eCEM85z6-gZaMLNq9L+B2DbA@mail.gmail.com> <CAAkRFZKhpk-iMppKWSnKX0Q4SLm7-rWrr2D8cWS8iOP4ypMWzw@mail.gmail.com> <CAFiYyc3xm0xYjLAgpzo7q0ovQKJXR4STyoUC=OKLn4XRiTZw6g@mail.gmail.com> <CAKxPW65FKYwpqaB4DnWd+6aS57ZrNoY91rKiX+L-sS2KQ-VFRw@mail.gmail.com> <CAAkRFZLO4rkLnWR067-=+G94F2pnEgX3Z5jXK0mFu545x2EAzA@mail.gmail.com> <CAKxPW65ar+ZdAwYtG5ECnCNYH+Jw+hiyPbXR2_bQ1OoXsr8_Rg@mail.gmail.com> <CAFiYyc37y7Q_z_7vHdZe98s6kKpgTJi4_ehmk=6gVnirV0TFDA@mail.gmail.com> <CAKxPW66yXwtfo_dnpPSudbrTAMOphwdk=KeAR_2U0P1cvKb4Sw@mail.gmail.com> <CAFiYyc3BF-3z3_QdAZxfSe4jupNbb_Ub_nLbjJQ+MisQxGR_CQ@mail.gmail.com> <CAKxPW67rYndb0AuDBpTfij8vB54Txcg4p6Yba693yTpL9=24fg@mail.gmail.com> <CAFiYyc2neYLHce0EUDCBcVKEw4iHAA0rZhEVTWy4+SaiGYPx+A@mail.gmail.com> <CAKxPW67D5EnOvTMJGcntyXG7WwQud2sW0kS3nHenijp6o0JC7g@mail.gmail.com> <CAKxPW67Nn9YSwH_xwFXBM7=y=32s_HpQ4fUAE+E8GoRSsVjxbA@mail.gmail.com> <CAKxPW66cfyabmH-ZbsMtempBCv5zV=embh=WsR18gAVgpDpFMA@mail.gmail.com> <CAAkRFZ+x+Q6E_6DL8w8JyvHZqGVCxiSc8NDRumc9EhUi1vp++Q@mail.gmail.com> <CAKxPW656sVbeVewS6dZL_d7X+02be16JRZ-4mrXkRLzwyuUxkw@mail.gmail.com> <CAFiYyc3AJ1C92QhZHTk83rZPgLSqwk+=qgYDeY9HG-p4UPRrMA@mail.gmail.com> <CAAkRFZJKbNwtA6cJ+sSn5gm1fdX8cr1yoOZz8RFwQd+5aRUQyQ@mail.gmail.com> <CAFiYyc0Q+JdNc3piYNsZvPBkK3GHWbibysn3dRe0=P_Fc6JYVw@mail.gmail.com> <CAAkRFZLQjn_QtG6F7ecyjvgjT1yZUaoihseEDzWR2fHcbJ8fkQ@mail.gmail.com>
In response to the recent comments, I have updated the patch to do the
following:
- Remove pass handling from -fopt-info
- Support additional flags in regular dumps
I have massaged the options so that they have the following (hopefully
clearer) behavior:
gcc ... -fopt-info .... ---> dump all optimization info on stderr
gcc ... -fopt-info-missed-optimized=file.txt --> dump info about
optimization applied as well as missed opportunities on to file.txt.
If no file.txt is provided, then use stderr.
I have enhanced regular dump flags, so that values accepted by
-fopt-info are also accepted. For example,
gcc ... -O2 -ftree-vectorize -fdump-tree-vect-optimized=foo.dump
Now foo.dump will include the regular tree-vect dump as well as the
output of -fopt-info=optimized. This way developers can get more
detailed dumps when needed.
I have also changed the meaning of dump option "details" to include
optimization details. Thus "-details" flag implies
"-missed-optimized-note" in addition to other dumps.
The pass level filtering of -fopt-info dumps can be done in a follow
up patch. It may even turn out to be unnecessary, because the
equivalent effect can be achieved by
-ftree-PASS-optimized-missed-note.
I have bootstrapped and tested the attached patch on x86_64 and didn't
observe any new failures. Okay for trunk?
Thanks,
Sharad
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