[Bug target/113739] New: ICE: in riscv_hard_regno_nregs, at config/riscv/riscv.cc:8072 with __attribute__((__target__("arch=rv64gcv")))

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113739

            Bug ID: 113739
           Summary: ICE: in riscv_hard_regno_nregs, at
                    config/riscv/riscv.cc:8072 with
                    __attribute__((__target__("arch=rv64gcv")))
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: riscv64-unknown-linux-gnu

Created attachment 57306
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57306&action=edit
reduced testcase (from gcc.target/riscv/target-attr-01.c)

Compiler output:
$ riscv64-unknown-linux-gnu-gcc testcase.c 
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in riscv_hard_regno_nregs, at
config/riscv/riscv.cc:8072
    4 | {
      | ^
0xb8742e riscv_hard_regno_nregs
        /repo/gcc-trunk/gcc/config/riscv/riscv.cc:8072
0x166c5fa init_reg_modes_target()
        /repo/gcc-trunk/gcc/reginfo.cc:471
0x128b5f3 init_emit_regs()
        /repo/gcc-trunk/gcc/emit-rtl.cc:6237
0x171df76 target_reinit()
        /repo/gcc-trunk/gcc/toplev.cc:1934
0x2b9c43a save_target_globals()
        /repo/gcc-trunk/gcc/target-globals.cc:92
0x1aeb99d riscv_save_restore_target_globals(tree_node*)
        /repo/gcc-trunk/gcc/config/riscv/riscv.cc:9081
0x1aeb99d riscv_save_restore_target_globals(tree_node*)
        /repo/gcc-trunk/gcc/config/riscv/riscv.cc:9074
0x133c4f4 invoke_set_current_function_hook
        /repo/gcc-trunk/gcc/function.cc:4689
0x1345917 invoke_set_current_function_hook
        /repo/gcc-trunk/gcc/function.cc:4863
0x1345917 allocate_struct_function(tree_node*, bool)
        /repo/gcc-trunk/gcc/function.cc:4812
0x100f6ed store_parm_decls()
        /repo/gcc-trunk/gcc/c/c-decl.cc:11084
0x10780f2 c_parser_declaration_or_fndef
        /repo/gcc-trunk/gcc/c/c-parser.cc:2975
0x1081f2b c_parser_external_declaration
        /repo/gcc-trunk/gcc/c/c-parser.cc:2046
0x1082913 c_parser_translation_unit
        /repo/gcc-trunk/gcc/c/c-parser.cc:1900
0x1082913 c_parse_file()
        /repo/gcc-trunk/gcc/c/c-parser.cc:26815
0x10f83b1 c_common_parse_file()
        /repo/gcc-trunk/gcc/c-family/c-opts.cc:1306
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-8771-20240203001826-g4b7d4d8a4af-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/14.0.1/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-isa-spec=2.2
--with-sysroot=/usr/riscv64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=riscv64-unknown-linux-gnu
--with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-8771-20240203001826-g4b7d4d8a4af-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240203 (experimental) (GCC)