Hi,
This commit https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=272628 is
breaking trunk LTO on some real benchmarks, so can it be fixed or reverted? For
example,
lto1: error: type variant differs by TYPE_CXX_ODR_P
<record_type 0xffff99943d08 __va_list BLK
size <integer_cst 0xffff99890f60 type <integer_type 0xffff999400a8
bitsizetype> constant 256>
unit-size <integer_cst 0xffff99891050 type <integer_type 0xffff99940000
sizetype> constant 32>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0xffff99943d08
fields <field_decl 0xffff99960130 __stack
type <pointer_type 0xffff99940fc0 type <void_type 0xffff99940f18 void>
public unsigned DI
size <integer_cst 0xffff99890c00 constant 64>
unit-size <integer_cst 0xffff99890c18 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set 7
structural-equality
pointer_to_this <pointer_type 0xffff99b5d740>>
unsigned DI <built-in>:0:0 size <integer_cst 0xffff99890c00 64>
unit-size <integer_cst 0xffff99890c18 8>
align:64 warn_if_not_align:0 offset_align 128
offset <integer_cst 0xffff99890c30 constant 0>
bit-offset <integer_cst 0xffff99890c78 constant 0> context <record_type
0xffff99943d08 __va_list>
chain <field_decl 0xffff999601c8 __gr_top type <pointer_type
0xffff99940fc0>
unsigned DI <built-in>:0:0 size <integer_cst 0xffff99890c00 64>
unit-size <integer_cst 0xffff99890c18 8>
align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
0xffff99890c30 0> bit-offset <integer_cst 0xffff99890c00 64> context
<record_type 0xffff99943d08 __va_list> chain <field_decl 0xffff99960260
__vr_top>>>
reference_to_this <reference_type 0xffff99943fa8> chain <type_decl
0xffff99960098 __va_list>>
<record_type 0xffff99c59cd8 va_list cxx-odr-p BLK
size <integer_cst 0xffff99890f60 type <integer_type 0xffff999400a8
bitsizetype> constant 256>
unit-size <integer_cst 0xffff99891050 type <integer_type 0xffff99940000
sizetype> constant 32>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0xffff99943d08
fields <field_decl 0xffff99960130 __stack
type <pointer_type 0xffff99940fc0 type <void_type 0xffff99940f18 void>
public unsigned DI
size <integer_cst 0xffff99890c00 constant 64>
unit-size <integer_cst 0xffff99890c18 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set 7
structural-equality
pointer_to_this <pointer_type 0xffff99b5d740>>
unsigned DI <built-in>:0:0 size <integer_cst 0xffff99890c00 64>
unit-size <integer_cst 0xffff99890c18 8>
align:64 warn_if_not_align:0 offset_align 128
offset <integer_cst 0xffff99890c30 constant 0>
bit-offset <integer_cst 0xffff99890c78 constant 0> context <record_type
0xffff99943d08 __va_list>
chain <field_decl 0xffff999601c8 __gr_top type <pointer_type
0xffff99940fc0>
unsigned DI <built-in>:0:0 size <integer_cst 0xffff99890c00 64>
unit-size <integer_cst 0xffff99890c18 8>
align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
0xffff99890c30 0> bit-offset <integer_cst 0xffff99890c00 64> context
<record_type 0xffff99943d08 __va_list> chain <field_decl 0xffff99960260
__vr_top>>>
pointer_to_this <pointer_type 0xffff99c59e28> reference_to_this
<reference_type 0xffff9a5b0d20>>
lto1: internal compiler error: 'verify_type' failed
0xe33e93 verify_type(tree_node const*)
../../gcc/gcc/tree.c:14655
0x5efc4b lto_fixup_state
../../gcc/gcc/lto/lto-common.c:2429
0x5fc01b lto_fixup_decls
../../gcc/gcc/lto/lto-common.c:2460
0x5fc01b read_cgraph_and_symbols(unsigned int, char const**)
../../gcc/gcc/lto/lto-common.c:2693
0x5ded23 lto_main()
../../gcc/gcc/lto/lto.c:616
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: /home/amptest/gcc/install_last//bin/g++ returned 1
exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
Thanks,
-Jiangning
> -----Original Message-----
> From: gcc-patches-ow...@gcc.gnu.org <gcc-patches-ow...@gcc.gnu.org>
> On Behalf Of Christophe Lyon
> Sent: Tuesday, June 25, 2019 8:30 PM
> To: Jan Hubicka <hubi...@ucw.cz>
> Cc: Eric Botcazou <ebotca...@adacore.com>; gcc Patches <gcc-
> patc...@gcc.gnu.org>; Richard Biener <rguent...@suse.de>; d...@dcepelik.cz;
> Martin Liška <mli...@suse.cz>
> Subject: Re: Use ODR for canonical types construction in LTO
>
> Hi,
>
>
> On Tue, 25 Jun 2019 at 10:20, Jan Hubicka <hubi...@ucw.cz> wrote:
> >
> > > > * gcc-interface/decl.c (gnat_to_gnu_entity): Check that
> > > > type is array or integer prior checking string flag.
> > >
> > > The test for array is superfluous here.
> > >
> > > > * gcc-interface/gigi.h (gnat_signed_type_for,
> > > > maybe_character_value): Likewise.
> > >
> > > Wrong ChangeLog, the first modified function is maybe_character_type.
> > >
> > > I have installed the attached patchlet after testing it on x86-64/Linux.
> > >
> > >
> > > * gcc-interface/decl.c (gnat_to_gnu_entity): Remove superfluous test
> in
> > > previous change.
> > > * gcc-interface/gigi.h (maybe_character_type): Fix formatting.
> > > (maybe_character_value): Likewise.
> >
> > Thanks a lot. I was not quite sure if ARRAY_TYPEs can happen there and
> > I should have added you to the CC.
> >
>
> After the main commit (r272628), I have noticed regressions on arm and
> aarch64:
>
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O0 -flto
> -flto-partition=1to1 -fno-use-linker-plugin (internal compiler
> error)
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O0 -flto
> -flto-partition=none -fuse-linker-plugin (internal compiler
> error)
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O0 -flto
> -fuse-linker-plugin -fno-fat-lto-objects (internal compiler
> error)
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O2 -flto
> -flto-partition=1to1 -fno-use-linker-plugin (internal compiler
> error)
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O2 -flto
> -flto-partition=none -fuse-linker-plugin -fno-fat-lto-objects (internal
> compiler
> error)
> g++.dg/lto/pr60336 cp_lto_pr60336_0.o-cp_lto_pr60336_0.o link, -O2 -flto
> -fuse-linker-plugin (internal compiler error)
> g++.dg/torture/pr45843.C -O2 -flto -fno-use-linker-plugin
> -flto-partition=none (internal compiler error)
> g++.dg/torture/pr45843.C -O2 -flto -fuse-linker-plugin
> -fno-fat-lto-objects (internal compiler error)
> g++.dg/torture/stackalign/eh-vararg-1.C -O2 -flto
> -fno-use-linker-plugin -flto-partition=none (internal compiler error)
> g++.dg/torture/stackalign/eh-vararg-1.C -O2 -flto
> -fno-use-linker-plugin -flto-partition=none -fpic (internal compiler
> error)
> g++.dg/torture/stackalign/eh-vararg-1.C -O2 -flto
> -fuse-linker-plugin -fno-fat-lto-objects (internal compiler error)
> g++.dg/torture/stackalign/eh-vararg-1.C -O2 -flto
> -fuse-linker-plugin -fno-fat-lto-objects -fpic (internal compiler
> error)
> g++.dg/torture/stackalign/eh-vararg-2.C -O2 -flto
> -fno-use-linker-plugin -flto-partition=none (internal compiler error)
> g++.dg/torture/stackalign/eh-vararg-2.C -O2 -flto
> -fno-use-linker-plugin -flto-partition=none -fpic (internal compiler
> error)
> g++.dg/torture/stackalign/eh-vararg-2.C -O2 -flto
> -fuse-linker-plugin -fno-fat-lto-objects (internal compiler error)
> g++.dg/torture/stackalign/eh-vararg-2.C -O2 -flto
> -fuse-linker-plugin -fno-fat-lto-objects -fpic (internal compiler
> error)
>
> A sample ICE:
> lto1: error: type variant differs by TYPE_CXX_ODR_P <record_type
> 0x2b3d78275dc8 __va_list BLK
> size <integer_cst 0x2b3d7825cf60 type <integer_type 0x2b3d782690a8
> bitsizetype> constant 256>
> unit-size <integer_cst 0x2b3d78270060 type <integer_type
> 0x2b3d78269000 sizetype> constant 32>
> align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
> 0x2b3d78275dc8
> fields <field_decl 0x2b3d78273130 __stack
> type <pointer_type 0x2b3d78271000 type <void_type 0x2b3d78269f18
> void>
> public unsigned DI
> size <integer_cst 0x2b3d7825cc00 constant 64>
> unit-size <integer_cst 0x2b3d7825cc18 constant 8>
> align:64 warn_if_not_align:0 symtab:0 alias-set -1
> structural-equality
> pointer_to_this <pointer_type 0x2b3d782769d8>>
> unsigned DI <built-in>:0:0 size <integer_cst 0x2b3d7825cc00
> 64> unit-size <integer_cst 0x2b3d7825cc18 8>
> align:64 warn_if_not_align:0 offset_align 128
> offset <integer_cst 0x2b3d7825cc30 constant 0>
> bit-offset <integer_cst 0x2b3d7825cc78 constant 0> context
> <record_type 0x2b3d78275dc8 __va_list>
> chain <field_decl 0x2b3d782731c8 __gr_top type <pointer_type
> 0x2b3d78271000>
> unsigned DI <built-in>:0:0 size <integer_cst
> 0x2b3d7825cc00 64> unit-size <integer_cst 0x2b3d7825cc18 8>
> align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
> 0x2b3d7825cc30 0> bit-offset <integer_cst 0x2b3d7825cc00
> 64> context <record_type 0x2b3d78275dc8 __va_list> chain <field_decl
> 0x2b3d78273260 __vr_top>>>
> reference_to_this <reference_type 0x2b3d782760a8> chain <type_decl
> 0x2b3d78273098 __va_list>>
> <record_type 0x2b3d783f6930 va_list cxx-odr-p BLK
> size <integer_cst 0x2b3d7825cf60 type <integer_type 0x2b3d782690a8
> bitsizetype> constant 256>
> unit-size <integer_cst 0x2b3d78270060 type <integer_type
> 0x2b3d78269000 sizetype> constant 32>
> align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
> 0x2b3d78275dc8
> fields <field_decl 0x2b3d78273130 __stack
> type <pointer_type 0x2b3d78271000 type <void_type 0x2b3d78269f18
> void>
> public unsigned DI
> size <integer_cst 0x2b3d7825cc00 constant 64>
> unit-size <integer_cst 0x2b3d7825cc18 constant 8>
> align:64 warn_if_not_align:0 symtab:0 alias-set -1
> structural-equality
> pointer_to_this <pointer_type 0x2b3d782769d8>>
> unsigned DI <built-in>:0:0 size <integer_cst 0x2b3d7825cc00
> 64> unit-size <integer_cst 0x2b3d7825cc18 8>
> align:64 warn_if_not_align:0 offset_align 128
> offset <integer_cst 0x2b3d7825cc30 constant 0>
> bit-offset <integer_cst 0x2b3d7825cc78 constant 0> context
> <record_type 0x2b3d78275dc8 __va_list>
> chain <field_decl 0x2b3d782731c8 __gr_top type <pointer_type
> 0x2b3d78271000>
> unsigned DI <built-in>:0:0 size <integer_cst
> 0x2b3d7825cc00 64> unit-size <integer_cst 0x2b3d7825cc18 8>
> align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
> 0x2b3d7825cc30 0> bit-offset <integer_cst 0x2b3d7825cc00
> 64> context <record_type 0x2b3d78275dc8 __va_list> chain <field_decl
> 0x2b3d78273260 __vr_top>>>
> pointer_to_this <pointer_type 0x2b3d783f69d8>>
> lto1: internal compiler error: 'verify_type' failed
> 0xe667b0 verify_type(tree_node const*)
> /gcc/tree.c:14650
> 0x632cd7 lto_fixup_state
> /gcc/lto/lto-common.c:2429
> 0x63f459 lto_fixup_decls
> /gcc/lto/lto-common.c:2460
> 0x63f459 read_cgraph_and_symbols(unsigned int, char const**)
> /gcc/lto/lto-common.c:2693
> 0x620fa2 lto_main()
> /gcc/lto/lto.c:616
> Please submit a full bug report,
>
> Christophe
