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Re: [PATCH 3/3] Loop flattening on loop-SSA.

From: Sebastian Pop <sebpop at gmail dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: Richard Guenther <rguenther at suse dot de>, gcc-patches at gcc dot gnu dot org
Date: Mon, 15 Nov 2010 17:12:39 -0600
Subject: Re: [PATCH 3/3] Loop flattening on loop-SSA.
References: <alpine.LNX.2.00.1011031606420.23074@zhemvz.fhfr.qr> <1288799546-29668-3-git-send-email-sebpop@gmail.com> <alpine.LNX.2.00.1011051309130.23074@zhemvz.fhfr.qr> <AANLkTi=T9D3cxkPf0=Fth_g8pLR5ZuFVByMGwWW9KVow@mail.gmail.com> <alpine.LNX.2.00.1011081706171.23074@zhemvz.fhfr.qr> <AANLkTintpBJCQ6qAt-oMfPoybukMRgAfizff63M2JBM1@mail.gmail.com> <AANLkTinFO511=ftfJsvQUK=+pvaYjmAUB5CpDZuE7C7_@mail.gmail.com> <AANLkTi=eqkAkTnPU8Ltg=1Ky+6irhz6m1Tc1XhR1wqxr@mail.gmail.com>

On Mon, Nov 15, 2010 at 17:04, Richard Guenther
<richard.guenther@gmail.com> wrote:
> Oh, so you're not removing the loop you are applying to (flattening it to its
> superloop) but flattening all subloops in loop.
>

Right.

> Well. ?Then there's indeed no suitable order for you (there's no
> LI_FROM_OUTERMOST which would then make sense).
>
> Which means that IMHO it makes sense to only apply flattening
> to parents of innermost loops (which is what I tried to suggest).
>
> Any benchmark results yet?

Not yet.  I haven't run the spec with loop flattening on.

Sebastian

References:
- Re: [PATCH 0/6] Loop flattening and improved if-conversion
  - From: Richard Guenther
- [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Sebastian Pop
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Richard Guenther
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Sebastian Pop
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Richard Guenther
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Sebastian Pop
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Sebastian Pop
- Re: [PATCH 3/3] Loop flattening on loop-SSA.
  - From: Richard Guenther

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