[Bug target/111903] New: [14 Regression] ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in create_tmp_from_val, at gimplify.cc:567 with -mno-sse2 and _Float16

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111903

            Bug ID: 111903
           Summary: [14 Regression] ICE: tree check: expected class
                    'type', have 'exceptional' (error_mark) in
                    create_tmp_from_val, at gimplify.cc:567 with -mno-sse2
                    and _Float16
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-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: x86_64-pc-linux-gnu

Created attachment 56160
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56160&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -mno-sse2 testcase.c
testcase.c: In function 'foo':
testcase.c:7:8: warning: implicit declaration of function 'bar'
[-Wimplicit-function-declaration]
    7 |   i /= bar ((_Complex _Float16) f);
      |        ^~~
testcase.c:7:3: error: invalid conversion to type '_Float16' without option
'-msse2'
    7 |   i /= bar ((_Complex _Float16) f);
      |   ^
testcase.c:7:8: internal compiler error: tree check: expected class 'type',
have 'exceptional' (error_mark) in create_tmp_from_val, at gimplify.cc:567
    7 |   i /= bar ((_Complex _Float16) f);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
0x87927f tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
        /repo/gcc-trunk/gcc/tree.cc:8997
0x77a7ed tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        /repo/gcc-trunk/gcc/tree.h:3751
0x77a7ed create_tmp_from_val
        /repo/gcc-trunk/gcc/gimplify.cc:567
0x77a7ed lookup_tmp_var
        /repo/gcc-trunk/gcc/gimplify.cc:590
0x77a7ed internal_get_tmp_var
        /repo/gcc-trunk/gcc/gimplify.cc:645
0x117e76e get_initialized_tmp_var(tree_node*, gimple**, gimple**, bool)
        /repo/gcc-trunk/gcc/gimplify.cc:684
0x117e76e gimplify_save_expr
        /repo/gcc-trunk/gcc/gimplify.cc:6690
0x1176c8e gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /repo/gcc-trunk/gcc/gimplify.cc:16995
0x1188507 gimplify_stmt(tree_node**, gimple**)
        /repo/gcc-trunk/gcc/gimplify.cc:7453
0x1188507 gimplify_compound_expr
        /repo/gcc-trunk/gcc/gimplify.cc:6639
0x117753b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /repo/gcc-trunk/gcc/gimplify.cc:16684
0x1178fd6 gimplify_stmt(tree_node**, gimple**)
        /repo/gcc-trunk/gcc/gimplify.cc:7453
0x117a0d9 gimplify_bind_expr
        /repo/gcc-trunk/gcc/gimplify.cc:1614
0x117751a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /repo/gcc-trunk/gcc/gimplify.cc:16895
0x1198b64 gimplify_stmt(tree_node**, gimple**)
        /repo/gcc-trunk/gcc/gimplify.cc:7453
0x1198b64 gimplify_body(tree_node*, bool)
        /repo/gcc-trunk/gcc/gimplify.cc:17961
0x1198f9a gimplify_function_tree(tree_node*)
        /repo/gcc-trunk/gcc/gimplify.cc:18160
0xf9f907 cgraph_node::analyze()
        /repo/gcc-trunk/gcc/cgraphunit.cc:684
0xfa2217 analyze_functions
        /repo/gcc-trunk/gcc/cgraphunit.cc:1247
0xfa2ebd symbol_table::finalize_compilation_unit()
        /repo/gcc-trunk/gcc/cgraphunit.cc:2554
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.

$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-4805-20231020221558-g7069ea909f5-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-4805-20231020221558-g7069ea909f5-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231020 (experimental) (GCC)