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Re: RFC: LRA for x86/x86-64 [0/9]
- From: Steven Bosscher <stevenb dot gcc at gmail dot com>
- To: Vladimir Makarov <vmakarov at redhat dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Paolo Bonzini <bonzini at gnu dot org>
- Date: Tue, 2 Oct 2012 09:28:17 +0200
- Subject: Re: RFC: LRA for x86/x86-64 [0/9]
- References: <5064D9AD.5070504@redhat.com> <CABu31nPaws_d+QoBdO_PxSXjHsZ8Kb10aOM_9GeWQKhoyG6_mA@mail.gmail.com> <5065C066.4040600@redhat.com> <5066486B.70205@redhat.com> <CABu31nP-19ZPkW6twoWZbPqThsY6zhyvhiW445Co+Gr_CykL=A@mail.gmail.com> <CABu31nMthTq9vgtKkbcx_4h1Vtf_Kpa0CKA39A0Q=UjRq128ew@mail.gmail.com> <506A3FDE.8040709@redhat.com>
On Tue, Oct 2, 2012 at 3:14 AM, Vladimir Makarov <vmakarov@redhat.com> wrote:
> My experience shows that these lists are usually 1-2 elements. Although in
> this case, there are pseudos with huge number elements (hundreeds). I tried
> -fweb for this tests because it can decrease the number elements but GCC (I
> don't know what pass) scales even worse: after 20 min of waiting and when
> virt memory achieved 20GB I stoped it.
Ouch :-)
The webizer itself never even runs, the compiler blows up somewhere
during the df_analyze call from web_main. The issue here is probably
in the DF_UD_CHAIN problem or in the DF_RD problem.
Ciao!
Steven