[Bug target/113766] New: ICE: in generate_insn, at config/riscv/riscv-vector-builtins.cc:4186 with (invalid?) __riscv_vfredosum_tu()

["zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113766

            Bug ID: 113766
           Summary: ICE: in generate_insn, at
                    config/riscv/riscv-vector-builtins.cc:4186 with
                    (invalid?) __riscv_vfredosum_tu()
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          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 57323
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57323&action=edit
reduced testcase

Compiler output:
$ riscv64-unknown-linux-gnu-gcc -march=rv64gv testcase.c 
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:6:3: internal compiler error: in generate_insn, at
config/riscv/riscv-vector-builtins.cc:4186
    6 |   __riscv_vfredosum_tu();
      |   ^~~~~~~~~~~~~~~~~~~~~~
0xb9bd49 riscv_vector::function_expander::generate_insn(insn_code)
        /repo/gcc-trunk/gcc/config/riscv/riscv-vector-builtins.cc:4186
0xb9bd49 riscv_vector::function_expander::generate_insn(insn_code)
        /repo/gcc-trunk/gcc/config/riscv/riscv-vector-builtins.cc:4184
0x1bcd50d riscv_vector::function_expander::expand()
        /repo/gcc-trunk/gcc/config/riscv/riscv-vector-builtins.h:582
0x1bcd50d riscv_vector::expand_builtin(unsigned int, tree_node*, rtx_def*)
        /repo/gcc-trunk/gcc/config/riscv/riscv-vector-builtins.cc:4589
0x12ca5e3 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /repo/gcc-trunk/gcc/expr.cc:12350
0x1187df8 expand_expr(tree_node*, rtx_def*, machine_mode, expand_modifier)
        /repo/gcc-trunk/gcc/expr.h:316
0x1187df8 expand_call_stmt
        /repo/gcc-trunk/gcc/cfgexpand.cc:2864
0x1187df8 expand_gimple_stmt_1
        /repo/gcc-trunk/gcc/cfgexpand.cc:3926
0x1187df8 expand_gimple_stmt
        /repo/gcc-trunk/gcc/cfgexpand.cc:4071
0x118e45e expand_gimple_basic_block
        /repo/gcc-trunk/gcc/cfgexpand.cc:6127
0x1190067 execute
        /repo/gcc-trunk/gcc/cfgexpand.cc:6866
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-r14-8795-20240204180638-g91e09b3a7e9-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-r14-8795-20240204180638-g91e09b3a7e9-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240205 (experimental) (GCC)