[Bug lto/101625] New: ICE in modref_tree<int>::merge with LTO and -m32

[Bug lto/101625] New: ICE in modref_tree<int>::merge with LTO and -m32

[tonyb at cybernetics dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

            Bug ID: 101625
           Summary: ICE in modref_tree<int>::merge with LTO and -m32
           Product: gcc
           Version: 11.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tonyb at cybernetics dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 51206
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51206&action=edit
Relevant *.i preprocessed source files from grub

ICE when building grub with LTO.  Builds correctly when LTO disabled.

gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/tonyb/tmp/gcc/install/libexec/gcc/x86_64-pc-linux-gnu/11.1.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/tonyb/tmp/gcc/install
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.1.1 20210726 (GCC) 

gcc -std=gnu99 -Os -m32 -Wall -W -Wshadow -Wpointer-arith -Wundef
-Wchar-subscripts -Wcomment -Wdeprecated-declarations -Wdisabled-optimization
-Wdiv-by-zero -Wfloat-equal -Wformat-extra-args -Wformat-security -Wformat-y2k
-Wimplicit -Wimplicit-function-declaration -Wimplicit-int -Wmain
-Wmissing-braces -Wmissing-format-attribute -Wmultichar -Wparentheses
-Wreturn-type -Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs
-Wunknown-pragmas -Wunused -Wunused-function -Wunused-label -Wunused-parameter
-Wunused-value  -Wunused-variable -Wwrite-strings -Wnested-externs
-Wstrict-prototypes -g -Wredundant-decls -Wmissing-prototypes
-Wmissing-declarations  -Wextra -Wattributes -Wendif-labels -Winit-self
-Wint-to-pointer-cast -Winvalid-pch -Wmissing-field-initializers -Wnonnull
-Woverflow -Wvla -Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -march=i386 -mrtd
-mregparm=3 -falign-jumps=1 -falign-loops=1 -falign-functions=1
-freg-struct-return -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow
-msoft-float -fno-dwarf2-cfi-asm -mno-stack-arg-probe
-fno-asynchronous-unwind-tables -fno-unwind-tables -fno-ident
-fno-stack-protector -Wtrampolines -Werror   -ffreestanding -fno-builtin
-Wno-undef  -flto -ffat-lto-objects -fuse-linker-plugin -save-temps
-Wno-error=implicit-fallthrough= -m32 -Wl,-melf_i386 -Wl,--build-id=none 
-nostdlib -Wl,-N -Wl,-r,-d  -flto -ffat-lto-objects -fuse-linker-plugin -o
zstd.module lib/zstd/zstd_module-debug.o lib/zstd/zstd_module-entropy_common.o
lib/zstd/zstd_module-error_private.o lib/zstd/zstd_module-fse_decompress.o
lib/zstd/zstd_module-huf_decompress.o lib/zstd/zstd_module-module.o
lib/zstd/zstd_module-xxhash.o lib/zstd/zstd_module-zstd_common.o
lib/zstd/zstd_module-zstd_decompress.o   
during IPA pass: inline
lto1: internal compiler error: Segmentation fault
0xadc82f crash_signal
        ../../gcc/gcc/toplev.c:327
0x90135a modref_tree<int>::merge(modref_tree<int>*, vec<modref_parm_map,
va_heap, vl_ptr>*)
        ../../gcc/gcc/ipa-modref-tree.h:420
0x8f916a ipa_merge_modref_summary_after_inlining(cgraph_edge*)
        ../../gcc/gcc/ipa-modref.c:3096
0x8ecd94 inline_call(cgraph_edge*, bool, vec<cgraph_edge*, va_heap, vl_ptr>*,
int*, bool, bool*)
        ../../gcc/gcc/ipa-inline-transform.c:503
0x1438e56 inline_small_functions
        ../../gcc/gcc/ipa-inline.c:2242
0x1438e56 ipa_inline
        ../../gcc/gcc/ipa-inline.c:2723
0x1438e56 execute
        ../../gcc/gcc/ipa-inline.c:3122

[Bug ipa/101625] [11/12 Regression] ICE in modref_tree<int>::merge with LTO and -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org
   Target Milestone|---                         |11.2
          Component|lto                         |ipa
            Summary|ICE in                      |[11/12 Regression] ICE in
                   |modref_tree<int>::merge     |modref_tree<int>::merge
                   |with LTO and -m32           |with LTO and -m32
           Priority|P3                          |P2
           Keywords|                            |ice-on-valid-code, lto

[Bug ipa/101625] [11/12 Regression] ICE in modref_tree<int>::merge with LTO and -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.2                        |11.3

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.2 is being released, retargeting bugs to GCC 11.3

[Bug ipa/101625] [11/12 Regression] ICE in modref_tree<int>::merge with LTO and -m32 since r11-3825-g71dbabccbfb295c8

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-08-02
            Summary|[11/12 Regression] ICE in   |[11/12 Regression] ICE in
                   |modref_tree<int>::merge     |modref_tree<int>::merge
                   |with LTO and -m32           |with LTO and -m32 since
                   |                            |r11-3825-g71dbabccbfb295c8
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r11-3825-g71dbabccbfb295c8.

Reduced test-case:

$ cat ice.i
typedef enum { XXH_OK } XXH_errorcode;
struct XXH64_state_s {};
struct XXH32_state_s {};
void XXH_free();

XXH_errorcode XXH32_freeState(struct XXH32_state_s *statePtr) {
  XXH_free(statePtr);
  return XXH_OK;
}
XXH_errorcode XXH64_freeState(struct XXH64_state_s *statePtr) {
  XXH_free(statePtr);
  return XXH_OK;
}

$ gcc ice.i -Os -ffat-lto-objects -nostdlib -nostdlib -Wl,-r,-d -flto
during IPA pass: inline
lto1: internal compiler error: Segmentation fault
0xd6ecba crash_signal
        /home/marxin/Programming/gcc/gcc/toplev.c:328
0x7ffff786239f ???
        ../sysdeps/unix/sysv/linux/sigaction.c:10
0xb4b57b modref_tree<int>::merge(modref_tree<int>*, vec<modref_parm_map,
va_heap, vl_ptr>*)
        /home/marxin/Programming/gcc/gcc/ipa-modref-tree.h:420
0xb4008a ipa_merge_modref_summary_after_inlining(cgraph_edge*)
        /home/marxin/Programming/gcc/gcc/ipa-modref.c:3123
0xb3393b inline_call(cgraph_edge*, bool, vec<cgraph_edge*, va_heap, vl_ptr>*,
int*, bool, bool*)
        /home/marxin/Programming/gcc/gcc/ipa-inline-transform.c:503
0x18b4e1c inline_small_functions
        /home/marxin/Programming/gcc/gcc/ipa-inline.c:2245
0x18b4e1c ipa_inline
        /home/marxin/Programming/gcc/gcc/ipa-inline.c:2726
0x18b4e1c execute
        /home/marxin/Programming/gcc/gcc/ipa-inline.c:3125
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: gcc returned 1 exit status
compilation terminated.
/usr/bin/ld: fatal error: lto-wrapper failed
collect2: error: ld returned 1 exit status

[Bug ipa/101625] [11/12 Regression] ICE in modref_tree<int>::merge with LTO and -m32 since r11-3825-g71dbabccbfb295c8

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |hubicka at gcc dot gnu.org

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Crashes due to:

│   3120              if (!ignore_stores)
│   3121                {
│   3122                  if (to_info && callee_info)
│  >3123                    to_info->stores->merge (callee_info->stores,
&parm_map);

where to_info->stores == NULL. It's likely related to partial linking.
@Honza?

[Bug ipa/101625] [11/12 Regression] ICE in modref_tree<int>::merge with LTO and -m32 since r11-3825-g71dbabccbfb295c8

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.3                        |11.4

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.3 is being released, retargeting bugs to GCC 11.4.

[Bug ipa/101625] [11/12/13/14 Regression] ICE in modref_tree<int>::merge with LTO and -m32 since r11-3825-g71dbabccbfb295c8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.4                        |11.5

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.4 is being released, retargeting bugs to GCC 11.5.