On Mon, Nov 29, 2021 at 8:46 AM liuhongt wrote:
>
> As discussed in PR, this patch do optimizations:
> 1. No memory is needed to move HI/HFmode between GPR and SSE registers
> under TARGET_SSE2 and above, pinsrw/pextrw are used for them w/o
> AVX512FP16.
> 2. Use
On Mon, Nov 29, 2021 at 2:32 AM liuhongt wrote:
>
> There're several failures reported in [1]:
> 1. unsupported instruction `pextrw` for "pextrw $0, %xmm31, 16(%rax)"
> %vpextrw should be used in output templates.
> 2. ICE in get_attr_memory for movhi_internal since some alternatives
> are
As discussed in PR, this patch do optimizations:
1. No memory is needed to move HI/HFmode between GPR and SSE registers
under TARGET_SSE2 and above, pinsrw/pextrw are used for them w/o
AVX512FP16.
2. Use gen_sse2_pinsrph/gen_vec_setv4sf_0 to replace
ix86_expand_vector_set in extendhfsf2/truncsfhf2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103463
Hongtao.liu changed:
What|Removed |Added
CC||crazylht at gmail dot com
--- Comment #1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103458
Richard Biener changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Hi All,
CSE uses equivalence classes to keep track of expressions that all have the same
values at the current point in the program.
Normal equivalences through SETs only insert and perform lookups in this set but
equivalence determined from comparisons, e.g.
(insn 46 44 47 7 (set (reg:CCZ 17
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103463
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |12.0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103451
Richard Biener changed:
What|Removed |Added
CC||aldyh at gcc dot gnu.org,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61713
Andrew Pinski changed:
What|Removed |Added
CC||mans at mansr dot com
--- Comment #9
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56964
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |DUPLICATE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103463
Bug ID: 103463
Summary: [12 Regression] ICE: in
ix86_attr_length_immediate_default, at
config/i386/i386.c:16686 with -Os
-fno-tree-dominator-opts -fno-tree-vrp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46476
Bug 46476 depends on bug 103439, which changed state.
Bug 103439 Summary: genemit emits dead code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103439
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103439
Richard Biener changed:
What|Removed |Added
Resolution|--- |WONTFIX
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60412
Andrew Pinski changed:
What|Removed |Added
CC||l_belev at yahoo dot com
--- Comment #2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70274
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |DUPLICATE
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60412
Andrew Pinski changed:
What|Removed |Added
Ever confirmed|0 |1
Severity|normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98782
--- Comment #8 from Tamar Christina ---
>
> I wonder how the situation looks on AArch64?
The situation didn't improve, up until the end of stage-1 we were seeing a 6%
perf uplift from somewhere which seems to have gone away now (in a commit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46143
Bug 46143 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52555
Bug 52555 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47315
Bug 47315 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45478
Bug 45478 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45325
Bug 45325 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41206
Bug 41206 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38018
Bug 38018 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37394
Bug 37394 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53776
Bug 53776 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39840
Bug 39840 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
Bug 39787 depends on bug 37565, which changed state.
Bug 37565 Summary: __optimize__ attribute doesn't work correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37565
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |FIXED
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102239
--- Comment #7 from luoxhu at gcc dot gnu.org ---
1| Dump of assembler code for function foo:
2|0x15e0 <+0>: rldicr. r3,r3,29,1
3+> 0x15e4 <+4>: beq 0x15f0
4|0x15e8 <+8>: blr
5|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49946
Andrew Pinski changed:
What|Removed |Added
Keywords||needs-bisection
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87210
Andrew Pinski changed:
What|Removed |Added
Status|NEW |RESOLVED
Target Milestone|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96159
Martin Uecker changed:
What|Removed |Added
Summary|atomic creates incorrect|atomic creates incorrect
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19676
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103462
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103462
Andrew Pinski changed:
What|Removed |Added
Keywords||missed-optimization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103462
--- Comment #2 from Hongtao.liu ---
bit clear and induction variable could be simplified to `& CONSTANT`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103462
--- Comment #1 from Hongtao.liu ---
Should it be done in vectorizer or ldist(just like memory op), or somewhere
else?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47769
--- Comment #7 from Hongtao.liu ---
>
> This is obviously horrible, but the right answer isn't btr in a loop, it's
> what clang does:
>
> movabsq $7905747460161236406, %rax # imm = 0x6DB6DB6DB6DB6DB6 every
> third bit unset
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103462
Bug ID: 103462
Summary: vectorizer failed to reduce bit_clear in loop.
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103461
--- Comment #2 from Andrew Pinski ---
The first one is a dup of bug 103451.
, at ipa-fnsummary.c:516
19 | }
| ^
0x6d8bdb evaluate_conditions_for_known_args
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211128/work/gcc-12-20211128/gcc/ipa-fnsummary.c:516
0xc4732d do_estimate_edge_size(cgraph_edge*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211128/work/gcc-12
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103461
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |12.0
lt
14 | }
| ^
0xeaadef crash_signal
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211128/work/gcc-12-20211128/gcc/toplev.c:322
0x1d1e040 operator_div::wi_fold(irange&, tree_node*,
generic_wide_int const&, generic_wide_int
const&, generic_wide_int const&,
generic_wide_int const&
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60070
--- Comment #3 from Andrew Pinski ---
For x86_64, the option was added with PR 70738.
I don't know if this would be an useful option that is general though. Each
target will implement it differently too.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61810
--- Comment #6 from Andrew Pinski ---
https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577192.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64992
Andrew Pinski changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot
gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102239
--- Comment #6 from luoxhu at gcc dot gnu.org ---
(In reply to Segher Boessenkool from comment #5)
> (In reply to luoxhu from comment #4)
> > Simply adjust the sequence of dot instruction could produce expected code,
> > is this correct?
>
> No
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102811
--- Comment #20 from Hongtao.liu ---
(In reply to Uroš Bizjak from comment #18)
> (In reply to Uroš Bizjak from comment #17)
> > (In reply to Hongtao.liu from comment #16)
> >
> > > ix86_expand_vector_set is mainly used by vec_set_optab which
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50677
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60089
Andrew Pinski changed:
What|Removed |Added
Keywords||missed-optimization
--- Comment #5 from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53875
Andrew Pinski changed:
What|Removed |Added
CC||roger at nextmovesoftware dot
com
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53875
--- Comment #4 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #3)
> The code which introduced this was
> g:8c6a82695b85f8ed74cdc67f2cf74c5a62d0d91d .
https://gcc.gnu.org/pipermail/gcc-patches/2003-May/104797.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53875
Andrew Pinski changed:
What|Removed |Added
Known to work||3.3.3
Known to fail|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102811
--- Comment #19 from Hongtao.liu ---
(In reply to Uroš Bizjak from comment #17)
> (In reply to Hongtao.liu from comment #16)
>
> > ix86_expand_vector_set is mainly used by vec_set_optab which exactly takes
> > target as both input and output,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59711
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |6.0
See Also|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103460
Bug ID: 103460
Summary: GCC rejected operator[](auto[]...) after P2128
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50463
Andrew Pinski changed:
What|Removed |Added
CC||strasbur at chkw386 dot
ch.pwr.wro
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58270
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50808
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed|2011-10-20 00:00:00 |2021-11-28
--- Comment #4 from Andrew
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46554
Andrew Pinski changed:
What|Removed |Added
Component|middle-end |ipa
Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97681
Andrew Pinski changed:
What|Removed |Added
Keywords||wrong-debug
See Also|
on 2021/11/27 上午12:24, Segher Boessenkool wrote:
> Hi!
>
> On Thu, Nov 25, 2021 at 11:20:57AM +0800, Kewen.Lin wrote:
>> This patch is to add a test case similar to the one in i386
>> to add testing coverage for 510.parest_r hotspots.
>
>> gcc/testsuite/ChangeLog:
>> *
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93008
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65503
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103021
Eric Gallager changed:
What|Removed |Added
Keywords||patch
URL|
The attached patch allows users to specify a path to their `etags`
executable for use when doing `make tags`, which is meant to close PR
other/103021: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103021
I based this patch off of this one from upstream automake:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98782
--- Comment #7 from Jiangning Liu ---
Without reverting the commit g:1118a3ff9d3ad6a64bba25dc01e7703325e23d92, we
still see exchange2 performance issue for aarch64. BTW, we have been using
-fno-inline-functions-called-once to get the best
There're several failures reported in [1]:
1. unsupported instruction `pextrw` for "pextrw $0, %xmm31, 16(%rax)"
%vpextrw should be used in output templates.
2. ICE in get_attr_memory for movhi_internal since some alternatives
are marked as TYPE_SSELOG.
Explicitly set memory_attr for those
On Sun, Nov 28, 2021 at 12:25 PM Jeff Law via Gcc-patches
wrote:
>
>
>
> On 11/28/2021 10:56 AM, apinski--- via Gcc-patches wrote:
> > From: Andrew Pinski
> >
> > This just adds a simplification to simplify_vector_constructor for
> > vector of 1 element to be VCE which should reduce memory usage
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19089
Andrew Pinski changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19089
--- Comment #6 from CVS Commits ---
The trunk branch has been updated by Andrew Pinski :
https://gcc.gnu.org/g:68332ab7ec58a89660db82569c5f4c2251d59741
commit r12-5568-g68332ab7ec58a89660db82569c5f4c2251d59741
Author: Andrew Pinski
Date:
On Sun, Nov 28, 2021 at 12:14 PM Jeff Law via Gcc-patches
wrote:
>
>
>
> On 11/27/2021 7:49 PM, apinski--- via Gcc-patches wrote:
> > From: Andrew Pinski
> >
> > Even though I cannot reproduce the ICE any more, this is still
> > a bug. We check already to see if we can access the directory
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24551
Eric Gallager changed:
What|Removed |Added
CC||egallager at gcc dot gnu.org,
Excerpts from Iain Buclaw's message of November 26, 2021 1:35 pm:
> Excerpts from Martin Liška's message of November 25, 2021 3:09 pm:
>> On 7/30/21 13:01, Iain Buclaw via Gcc-patches wrote:
>>> |Covers cases where functions that handle the extracted strings ignore the
>>> explicit length. This
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90885
Eric Gallager changed:
What|Removed |Added
Summary|GCC should warn about 2^16 |GCC should warn about 2^16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103459
Bug ID: 103459
Summary: Make configury regenerate cleanly with `autoreconf
-Wall`
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: build
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103458
Andrew Pinski changed:
What|Removed |Added
Ever confirmed|0 |1
Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103458
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |12.0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103456
Andrew Pinski changed:
What|Removed |Added
Severity|normal |blocker
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81174
Andrew Pinski changed:
What|Removed |Added
Keywords||needs-bisection
See Also|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103457
--- Comment #2 from Roland Illig ---
Cool, thank you for taking this optimization.
Just to give you a bit of background: I discovered this while converting some
of the enum types in BSD Make to proper bitfields, which theoretically should
be
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90782
Andrew Pinski changed:
What|Removed |Added
Keywords||needs-bisection
--- Comment #7 from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103455
--- Comment #5 from Andrew Pinski ---
Reduced:
template
struct rp {
T* operator->() const;
operator T*() const;
template explicit operator U*() const;
};
struct b {};
typedef void (b::*fptr)();
void foo(rp n, fptr h) {
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100987
Bug 100987 depends on bug 62157, which changed state.
Bug 62157 Summary: make distclean error when libsanitizer is configured not to
build 'tsan'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62157
What|Removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3415
Bug 3415 depends on bug 62157, which changed state.
Bug 62157 Summary: make distclean error when libsanitizer is configured not to
build 'tsan'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62157
What|Removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62157
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |FIXED
Target Milestone|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62157
--- Comment #7 from CVS Commits ---
The trunk branch has been updated by Andrew Pinski :
https://gcc.gnu.org/g:32377c101934477e3d27fec9c6a22f1c97ccf730
commit r12-5566-g32377c101934477e3d27fec9c6a22f1c97ccf730
Author: Andrew Pinski
Date:
Snapshot gcc-12-20211128 is now available on
https://gcc.gnu.org/pub/gcc/snapshots/12-20211128/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 12 git branch
with the following options: git://gcc.gnu.org/git/gcc.git branch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103457
Andrew Pinski changed:
What|Removed |Added
Keywords||missed-optimization
libstdc++: In _Hashtable, use insertion hint as much as possible.
Make use in unordered containers of the user provided hint iterator
as much as possible.
Hint is now used:
- As a hint for allocation, in order to limit memory fragmentation when
allocator is making use of
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103302
--- Comment #5 from Alexandre Oliva ---
Hello, Jim,
Thanks for the investigation, that's useful. I guess the register allocator
shouldn't choose to coalesce registers when there's a clobber afterwards, or it
should drop the clobber, since
On 11/28/2021 10:56 AM, apinski--- via Gcc-patches wrote:
From: Andrew Pinski
This just adds a simplification to simplify_vector_constructor for
vector of 1 element to be VCE which should reduce memory usage in
the compiler and maybe allow for some more optimizations.
OK? Bootstrapped and
On 11/27/2021 7:49 PM, apinski--- via Gcc-patches wrote:
From: Andrew Pinski
Even though I cannot reproduce the ICE any more, this is still
a bug. We check already to see if we can access the directory
but never check to see if the path is actually a directory.
This adds the check and now
On 11/27/2021 6:19 PM, apinski--- via Gcc-patches wrote:
From: Andrew Pinski
So what is happening is DIST_SUBDIRS contains the conditional
directories which is wrong, so we need to force DIST_SUBDIRS
to be the same as SUBDIRS as recommened by the automake manual.
OK? Bootstrapped and
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103458
Bug ID: 103458
Summary: [12 Regression] ICE in verify_loop_structure, at
cfgloop.c:1736 (error: loop with header 4 not in loop
tree)
Product: gcc
Version: 12.0
On 11/26/2021 5:18 AM, Richard Biener via Gcc-patches wrote:
This implements a subset of -Wunreachable-code, unreachable code
after a return stmt. Contrary to the previous attemt at CFG
construction time this implements the bits during GIMPLE lowering
where there are still all GIMPLE return
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103457
Bug ID: 103457
Summary: boolean operations on bit-fields are not merged
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component:
On Sun, Nov 28, 2021 at 2:25 PM Roger Sayle wrote:
>
>
> This patch addresses PR target/100711 by introducing define_split
> patterns so that not/broadcast/pand may be simplified (by combine)
> to broadcast/pandn. This introduces two splitters one for optimizing
> pandn on TARGET_SSE for V4SI
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103455
--- Comment #4 from Stephan Hartmann ---
Last working compiler was gcc-8.1, gcc-8.2 and later produce an ICE.
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