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* [Bug sanitizer/94191] New: ubsan bootstrap memory hog with -enable-checking=rtl
@ 2020-03-16 9:50 zhroma at gcc dot gnu.org
2020-03-16 9:57 ` [Bug sanitizer/94191] " jakub at gcc dot gnu.org
2020-03-16 11:00 ` rguenth at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: zhroma at gcc dot gnu.org @ 2020-03-16 9:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94191
Bug ID: 94191
Summary: ubsan bootstrap memory hog with -enable-checking=rtl
Product: gcc
Version: 9.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: zhroma at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
On 64Gb RAM x86_64 box using 9.3 sources and running:
<src>/configure --enable-languages=c,c++ --with-build-config=bootstrap-ubsan
--enable-checking=rtl; make
During stage2 insn-extract.c compilation was stopped by OOM killer. It really
wants 60+ Gb of memory.
--
Yeah, it's a bit crazy checking options and not sure we have to bother about
it.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug sanitizer/94191] ubsan bootstrap memory hog with -enable-checking=rtl
2020-03-16 9:50 [Bug sanitizer/94191] New: ubsan bootstrap memory hog with -enable-checking=rtl zhroma at gcc dot gnu.org
@ 2020-03-16 9:57 ` jakub at gcc dot gnu.org
2020-03-16 11:00 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-03-16 9:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94191
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Don't do it or buy enough memory.
RTL checking alone already creates lots of basic blocks due to all the checks
it performs (in the code the compiler is compiling) and ubsan as well (in the
instrumentation it adds for it), and when you compile the huge auto-generated
files, it is costly.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug sanitizer/94191] ubsan bootstrap memory hog with -enable-checking=rtl
2020-03-16 9:50 [Bug sanitizer/94191] New: ubsan bootstrap memory hog with -enable-checking=rtl zhroma at gcc dot gnu.org
2020-03-16 9:57 ` [Bug sanitizer/94191] " jakub at gcc dot gnu.org
@ 2020-03-16 11:00 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-03-16 11:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94191
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |memory-hog
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I suggest to use -O1, that should help.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-03-16 11:00 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-03-16 9:50 [Bug sanitizer/94191] New: ubsan bootstrap memory hog with -enable-checking=rtl zhroma at gcc dot gnu.org
2020-03-16 9:57 ` [Bug sanitizer/94191] " jakub at gcc dot gnu.org
2020-03-16 11:00 ` rguenth at gcc dot gnu.org
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