[Bug tree-optimization/115753] New: tree check: expected ssa_name, have integer_cst in supportable_indirect_convert_operation, at tree-vect-stmts.cc:14680[15 Regression] ICE:

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115753

            Bug ID: 115753
           Summary: tree check: expected ssa_name, have integer_cst in
                    supportable_indirect_convert_operation, at
                    tree-vect-stmts.cc:14680[15 Regression] ICE:
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          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 58562
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58562&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -frounding-math testcase.c 
during GIMPLE pass: slp
testcase.c: In function 'foo':
testcase.c:2:1: internal compiler error: tree check: expected ssa_name, have
integer_cst in supportable_indirect_convert_operation, at
tree-vect-stmts.cc:14680
    2 | foo (void)
      | ^~~
0x2a68abb internal_error(char const*, ...)
        /repo/gcc-trunk/gcc/diagnostic-global-context.cc:491
0x8a6ff4 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        /repo/gcc-trunk/gcc/tree.cc:9001
0x898a80 tree_check(tree_node*, char const*, int, char const*, tree_code)
        /repo/gcc-trunk/gcc/tree.h:3632
0x898a80 supportable_indirect_convert_operation(code_helper, tree_node*,
tree_node*, vec<std::pair<tree_node*, tree_code>, va_heap, vl_ptr>*,
tree_node*)
        /repo/gcc-trunk/gcc/tree-vect-stmts.cc:14680
0x17fb8d8 vectorizable_conversion
        /repo/gcc-trunk/gcc/tree-vect-stmts.cc:5388
0x17fd2f8 vect_analyze_stmt(vec_info*, _stmt_vec_info*, bool*, _slp_tree*,
_slp_instance*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
        /repo/gcc-trunk/gcc/tree-vect-stmts.cc:13307
0x18581ec vect_slp_analyze_node_operations_1
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:6537
0x18581ec vect_slp_analyze_node_operations
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:6736
0x185810f vect_slp_analyze_node_operations
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:6715
0x1859c5a vect_slp_analyze_operations(vec_info*)
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:7133
0x185ec88 vect_slp_analyze_bb_1
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:8144
0x185ec88 vect_slp_region
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:8191
0x1860e8c vect_slp_bbs
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:8402
0x1861410 vect_slp_function(function*)
        /repo/gcc-trunk/gcc/tree-vect-slp.cc:8524
0x186ba81 execute
        /repo/gcc-trunk/gcc/tree-vectorizer.cc:1534
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-r15-1762-20240702001736-g0b4fd672bf0-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/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 --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-1762-20240702001736-g0b4fd672bf0-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240702 (experimental) (GCC)