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Re: Fix PR 53743 and other -freorder-blocks-and-partition failures
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: Steven Bosscher <stevenb dot gcc at gmail dot com>
- Cc: Jeff Law <law at redhat dot com>, Teresa Johnson <tejohnson at google dot com>, David Li <davidxl at google dot com>, Diego Novillo <dnovillo at google dot com>, Jan Hubicka <hubicka at ucw dot cz>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 24 May 2013 15:25:05 +0200
- Subject: Re: Fix PR 53743 and other -freorder-blocks-and-partition failures
- References: <20130520025501 dot E9F99805D7 at tjsboxrox dot mtv dot corp dot google dot com> <CABu31nM46y++4yr=SVTHmpr1=REJPtTFjyWZ_ybgvWk64BsDJg at mail dot gmail dot com> <CAAe5K+V1LkiVQxOUjoqL6R1EFgpDMpPy5jvHzYOGT3JnX68=0w at mail dot gmail dot com> <CABu31nP5HKTHp1_cacPCw+oBoe_orUs9+cRMuA4nmzpL24Kx9Q at mail dot gmail dot com> <519D79E1 dot 7070703 at redhat dot com> <CABu31nPPH9Uh94ANTkH+Jq3pJx21pL9ABgZRBkSoxzWCNH5EbA at mail dot gmail dot com> <519E3744 dot 4020501 at redhat dot com> <CABu31nPd9kdUYLnVzETaKwqU=wFjD=PfDRCyEq9S74rYyx99Kg at mail dot gmail dot com>
> On Thu, May 23, 2013 at 5:35 PM, Jeff Law wrote:
> > Thanks. I wasn't aware of that wiki page. I'll be reading it today :-)
>
> The .odp attachment is actually a bit more informative, you should
> take a look at that too, if you have the time.
>
> Comments welcome, so I can include that in the new .texi version I'll
> put together this weekend :-)
Thanks for writting this down ;)
note that the CFG infrastructure also existed in reg-stack.c and flow.c, not only
in Haifa. The original idea behind CFG code was to unify those implementations
into something more generally useful and one developed by Rth for liveness was
taken a as the winner to rule them all.
http://www.ucw.cz/~hubicka/papers/proj.pdf
has some more historical notes, too ;)
Honza
>
> Ciao!
> Steven