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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in REE, FWPROP and x86 specific passes
Date: Mon, 01 Feb 2021 12:07:17 +0000 [thread overview]
Message-ID: <bug-98863-4-FPaEuHnD1n@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-98863-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98863
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*
Summary|WRF with LTO consumes a lot |WRF with LTO consumes a lot
|of memory in REE, CPROP, |of memory in REE, FWPROP
|PRE and LRA passes |and x86 specific passes
--- Comment #33 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the remaining two 7GB peaks are fwprop SSA build consuming 5GB over the
otherwise ~2GB peak RSS. Unfortunately it escapes -fmem-report and seems
to implement its own LIVE dataflow problem rather than using the LIVE from DF
and/or its USE/DEF chains.
I'm not sure how much of a regression this is (the old fwprop implementation
is gone and I've not yet backported the various memory fixes though probably
will do so). Old fwprop used MD and built its own single def-use links as
well.
Richard, I think we need to do something about this for GCC 11.
next prev parent reply other threads:[~2021-02-01 12:07 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 11:19 [Bug rtl-optimization/98863] New: WRF with LTO consumes a lot of memory in split2 pass marxin at gcc dot gnu.org
2021-01-28 11:20 ` [Bug rtl-optimization/98863] " marxin at gcc dot gnu.org
2021-01-28 13:18 ` rguenth at gcc dot gnu.org
2021-01-28 13:21 ` marxin at gcc dot gnu.org
2021-01-28 14:14 ` marxin at gcc dot gnu.org
2021-01-28 14:20 ` rguenth at gcc dot gnu.org
2021-01-28 14:24 ` rguenth at gcc dot gnu.org
2021-01-28 15:09 ` marxin at gcc dot gnu.org
2021-01-28 15:15 ` rguenth at gcc dot gnu.org
2021-01-28 15:17 ` rguenth at gcc dot gnu.org
2021-01-28 15:18 ` rguenth at gcc dot gnu.org
2021-01-28 15:30 ` rguenth at gcc dot gnu.org
2021-01-29 8:47 ` rguenth at gcc dot gnu.org
2021-01-29 9:03 ` rguenth at gcc dot gnu.org
2021-01-29 9:47 ` rguenth at gcc dot gnu.org
2021-01-29 9:56 ` marxin at gcc dot gnu.org
2021-01-29 10:18 ` marxin at gcc dot gnu.org
2021-01-29 10:24 ` rguenther at suse dot de
2021-01-29 11:03 ` rguenth at gcc dot gnu.org
2021-01-29 11:03 ` [Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in REE pass rguenth at gcc dot gnu.org
2021-01-29 11:38 ` marxin at gcc dot gnu.org
2021-01-29 12:13 ` rguenth at gcc dot gnu.org
2021-01-29 12:50 ` [Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in REE, CPROP, PRE and LRA passes rguenth at gcc dot gnu.org
2021-01-29 12:57 ` marxin at gcc dot gnu.org
2021-01-29 13:01 ` cvs-commit at gcc dot gnu.org
2021-01-29 13:23 ` rguenth at gcc dot gnu.org
2021-01-29 13:37 ` marxin at gcc dot gnu.org
2021-01-29 14:39 ` rguenth at gcc dot gnu.org
2021-01-29 15:01 ` rguenth at gcc dot gnu.org
2021-01-29 15:56 ` hjl.tools at gmail dot com
2021-01-29 16:32 ` cvs-commit at gcc dot gnu.org
2021-02-01 8:22 ` cvs-commit at gcc dot gnu.org
2021-02-01 9:31 ` marxin at gcc dot gnu.org
2021-02-01 10:41 ` rguenth at gcc dot gnu.org
2021-02-01 12:07 ` rguenth at gcc dot gnu.org [this message]
2021-02-01 12:30 ` [Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in REE, FWPROP and x86 specific passes rsandifo at gcc dot gnu.org
2021-02-01 12:32 ` rguenth at gcc dot gnu.org
2021-02-01 12:45 ` [Bug rtl-optimization/98863] [11 Regression] " rguenth at gcc dot gnu.org
2021-02-01 13:35 ` cvs-commit at gcc dot gnu.org
2021-02-03 10:27 ` cvs-commit at gcc dot gnu.org
2021-02-03 12:33 ` cvs-commit at gcc dot gnu.org
2021-02-08 8:45 ` rsandifo at gcc dot gnu.org
2021-02-08 9:01 ` rguenther at suse dot de
2021-02-08 9:23 ` richard.sandiford at arm dot com
2021-02-08 9:46 ` rguenth at gcc dot gnu.org
2021-02-08 12:44 ` rguenth at gcc dot gnu.org
2021-02-09 12:07 ` cvs-commit at gcc dot gnu.org
2021-02-09 12:40 ` rguenth at gcc dot gnu.org
2021-02-10 13:51 ` rguenth at gcc dot gnu.org
2021-02-15 15:06 ` cvs-commit at gcc dot gnu.org
2021-02-15 15:34 ` rsandifo at gcc dot gnu.org
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