https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89655
Bug ID: 89655
Summary: GCC crashes building linux kernel for arm 32-bit
(culprit r269453)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: mkuvyrkov at gcc dot gnu.org
Target Milestone: ---
Created attachment 45933
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45933&action=edit
Reproducer tarball
After r269453 GCC ICEs when building linux kernel for AArch32 in allmodconfig
and allyesconfig kernel configurations.
I've reduced the crash down to a single preprocessed file, but could not
eliminate all kernel plugins -- one plugin is still left.
The attached tarball has preprocessed source, binary plugin and GCC's
configuration string.
Culprit:
<cut>
commit 791a496442cb02f7ab6b50e291e1f0669e09e99d
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Mar 7 12:46:44 2019 +0000
2019-03-07 Richard Biener <rguent...@suse.de>
PR tree-optimization/89595
* tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Take
stmt iterator as reference, take boolean output parameter to
indicate whether the stmt was removed and thus the iterator
already advanced.
(dom_opt_dom_walker::before_dom_children): Re-iterate over
stmts created by folding.
* gcc.dg/torture/pr89595.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269453
138bc75d-0d04-0410-961f-82ee72b054a4
</cut>
Reproduction instructions from Linaro TCWG's automated bisections (just in
case):
Reproduce builds:
<cut>
mkdir investigate-gcc-791a496442cb02f7ab6b50e291e1f0669e09e99d
cd investigate-gcc-791a496442cb02f7ab6b50e291e1f0669e09e99d
git clone https://git.linaro.org/toolchain/jenkins-scripts
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh
https://ci.linaro.org/job/tcwg_kernel-bisect-gnu-master-arm-lts-allyesconfig/11/artifact/artifacts/manifests/build-baseline.sh
curl -o artifacts/manifests/build-parameters.sh
https://ci.linaro.org/job/tcwg_kernel-bisect-gnu-master-arm-lts-allyesconfig/11/artifact/artifacts/manifests/build-parameters.sh
curl -o artifacts/test.sh
https://ci.linaro.org/job/tcwg_kernel-bisect-gnu-master-arm-lts-allyesconfig/11/artifact/artifacts/test.sh
chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_kernel-build.sh @@ artifacts/manifests/build-baseline.sh
cd gcc
# Reproduce first_bad build
git checkout --detach 791a496442cb02f7ab6b50e291e1f0669e09e99d
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach 02a7fc594d3a0b1f2b2fc8d5fd8ea425ff45d418
../artifacts/test.sh
cd ..
</cut>
