[Bug target/114160] New: ICE in dwarf2out_frame_debug_cfa_offset RISCV thead-c906

[Bug target/114160] New: ICE in dwarf2out_frame_debug_cfa_offset RISCV thead-c906

[nop at unearthly dot dev]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

            Bug ID: 114160
           Summary: ICE in dwarf2out_frame_debug_cfa_offset RISCV
                    thead-c906
           Product: gcc
           Version: 13.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nop at unearthly dot dev
  Target Milestone: ---

Created attachment 57573
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57573&action=edit
cvise produced reproduction case

Taking out -O2, -mcpu, or -fPIC out resolves the issue. Additionally, this
doesn't happen on -mtune=thead-c906

This does not happen on gcc 14

mu-loong ~ # gcc -v -O2 -mcpu=thead-c906 -fPIC GBZ.c
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/riscv64-unknown-linux-gnu/13/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-13.2.1_p20240210/work/gcc-13-20240210/configure
--host=riscv64-unknown-linux-gnu --build=riscv64-unknown-linux-gnu
--prefix=/usr --bindir=/usr/riscv64-unknown-linux-gnu/gcc-bin/13
--includedir=/usr/lib/gcc/riscv64-unknown-linux-gnu/13/include
--datadir=/usr/share/gcc-data/riscv64-unknown-linux-gnu/13
--mandir=/usr/share/gcc-data/riscv64-unknown-linux-gnu/13/man
--infodir=/usr/share/gcc-data/riscv64-unknown-linux-gnu/13/info
--with-gxx-include-dir=/usr/lib/gcc/riscv64-unknown-linux-gnu/13/include/g++-v13
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/riscv64-unknown-linux-gnu/13/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=release
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo
13.2.1_p20240210 p13' --with-gcc-major-version-only --enable-libstdcxx-time
--enable-lto --disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --disable-multilib
--disable-fixed-point --with-abi=lp64d --disable-libgomp --disable-libssp
--disable-libada --disable-cet --disable-systemtap
--disable-valgrind-annotations --disable-vtable-verify --disable-libvtv
--with-zstd --without-isl --enable-default-pie --enable-default-ssp
--disable-fixincludes
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.2.1 20240210 (Gentoo 13.2.1_p20240210 p13)
COLLECT_GCC_OPTIONS='-v' '-O2' '-mcpu=thead-c906' '-fPIC'
'-march=rv64imafdc_zicsr_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync'
'-mabi=lp64d' '-misa-spec=20191213'
'-march=rv64imafdc_zicsr_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync'
'-dumpdir' 'a-'
 /usr/libexec/gcc/riscv64-unknown-linux-gnu/13/cc1 -quiet -v -imultilib . GBZ.c
-quiet -dumpdir a- -dumpbase GBZ.c -dumpbase-ext .c -mcpu=thead-c906
-march=rv64imafdc_zicsr_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync
-mabi=lp64d -misa-spec=20191213
-march=rv64imafdc_zicsr_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync
-O2 -version -fPIC -o /tmp/cczMFA4n.s
GNU C17 (Gentoo 13.2.1_p20240210 p13) version 13.2.1 20240210
(riscv64-unknown-linux-gnu)                                                    
                   compiled by GNU C version 13.2.1 20240210, GMP version
6.3.0, MPFR version 4.2.1, MPC version 1.3.1, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/riscv64-unknown-linux-gnu/13/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/riscv64-unknown-linux-gnu/13/../../../../riscv64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/riscv64-unknown-linux-gnu/13/include
 /usr/include
End of search list.
Compiler executable checksum: e5bb685f082cf8fc728c5e3c357fe251
GBZ.c:9:1: warning: no semicolon at end of struct or union                     
                                                                             9
| } __libc_message(char *fmt, ...) {
      | ^
during RTL pass: dwarf2
GBZ.c: In function ‘__libc_message’:
GBZ.c:19:1: internal compiler error: in dwarf2out_frame_debug_cfa_offset, at
dwarf2cfi.cc:1376                                                             
19 | }
      | ^
0x40c4e9 dwarf2out_frame_debug_cfa_offset
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:1376
0x40c4e9 dwarf2out_frame_debug                                                 
                                                                               

/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:2285
0x40c4e9 scan_insn_after
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:2726
0x40d197 scan_trace
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:2893
0x40d4c3 create_cfi_notes
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:2933
0x40d4c3 execute_dwarf2_frame
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:3309
0x40d4c3 execute
       
/usr/src/debug/sys-devel/gcc-13.2.1_p20240210/gcc-13-20240210/gcc/dwarf2cfi.cc:3799

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.3

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[christophm30 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

Christoph Müllner <christophm30 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |christophm30 at gmail dot com

--- Comment #1 from Christoph Müllner <christophm30 at gmail dot com> ---
Thanks for reporting (and CCing me). I'm working on this.

So far, I could reproduce it on releases/gcc-13.
GCC master is not affected (as written above).

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[christophm30 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

--- Comment #2 from Christoph Müllner <christophm30 at gmail dot com> ---
The fix for this issue ("riscv: xtheadmempair: Fix CFA reg notes") has been
cherry-picked from master and pushed to releases/gcc-13.

Btw, I don't have permission to change the ticket fields. So, whoever has
permission, please close this one.

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Christoph Müllner from comment #2)
> The fix for this issue ("riscv: xtheadmempair: Fix CFA reg notes") has been
> cherry-picked from master and pushed to releases/gcc-13.
> 
> Btw, I don't have permission to change the ticket fields. So, whoever has
> permission, please close this one.

If you have commit access, you can change your email to
<yoursourcewareusername>@gcc.gnu.org on BZ and get permissions.

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[cmuellner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

Christoph Müllner <cmuellner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |cmuellner at gcc dot gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2024-03-18

--- Comment #4 from Christoph Müllner <cmuellner at gcc dot gnu.org> ---
I now have permission. Thanks Sam!

[Bug target/114160] ICE on RISCV (-mcpu=thead-c906) when building glibc in dwarf2out_frame_debug_cfa_offset

[cmuellner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114160

Christoph Müllner <cmuellner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Christoph Müllner <cmuellner at gcc dot gnu.org> ---
Closing as fixed.