[Bug c/110506] New: ice: tree check: expected none of vector_type, have vector_type in get_value_for_expr, at tree-ssa-ccp.cc:686

["dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110506

            Bug ID: 110506
           Summary: ice: tree check: expected none of vector_type,  have
                    vector_type in get_value_for_expr, at
                    tree-ssa-ccp.cc:686
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

For this C code:

struct {
  long *sp;
  long *csp
} neko_interp_loop_vm;
int neko_interp_loop_vm_2;
void neko_interp_loop() {
  long pc[] = {&&LabelAccGlobal, &&LabelPhysCompare, &&LabelTailCall,
               &&LabelLoop, &&LabelMakeArray2};
  long *sp, *csp = neko_interp_loop_vm.csp;
LabelAccGlobal:
  neko_interp_loop_vm.sp = sp;
  neko_interp_loop_vm.csp = csp;
  goto * 0;
LabelTailCall:
  csp = sp -= neko_interp_loop_vm_2;
LabelMakeArray2:
LabelPhysCompare:
LabelLoop:
  goto * 0;
}

compiled by g:9757e4440bd8755d, does this:

$ ~/gcc/results.20230628.asan.ubsan/bin/gcc -c -w -O2 bug936.c
during GIMPLE pass: ccp
/home/dcb38/rpmbuild/BUILD/neko-2-3-0/vm/interp.c: In function
‘neko_interp_loop’:
/home/dcb38/rpmbuild/BUILD/neko-2-3-0/vm/interp.c:613:9: internal compiler
error: tree check: expected none of vector_type, have vector_type in
get_value_for_expr, at tree-ssa-ccp.cc:686
  613 | int_val neko_interp_loop( neko_vm *VM_ARG, neko_module *m, int_val
_acc, int_val *_pc ) {
      |         ^~~~~~~~~~~~~~~~
0x11656f9 tree_not_check_failed(tree_node const*, char const*, int, char
const*, ...)
        ../../trunk.year/gcc/tree.cc:8936
0xf75774 tree_not_check(tree_node*, char const*, int, char const*, tree_code)
        ../../trunk.year/gcc/tree.h:3581
0xf75774 get_value_for_expr(tree_node*, bool)
        ../../trunk.year/gcc/tree-ssa-ccp.cc:686

It was fine with a version from a couple of days earlier:

foundBugs $ ~/gcc/results.20230626.asan.ubsan/bin/gcc -c -w -O2 bug936.c
foundBugs $ ~/gcc/results.20230626.asan.ubsan/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/home/dcb38/gcc/results.20230626.asan.ubsan/bin/gcc
COLLECT_LTO_WRAPPER=/home/dcb38/gcc/results.20230626.asan.ubsan/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../trunk.year/configure
--prefix=/home/dcb38/gcc/results.20230626.asan.ubsan --disable-multilib
--disable-bootstrap --with-build-config=bootstrap-asan
--with-build-config=bootstrap-ubsan --with-pkgversion=3a39a31b8ae9c646
--enable-checking=df,extra,fold,rtl,yes --enable-languages=c,c++,fortran
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20230626 (experimental) (3a39a31b8ae9c646)