[Bug tree-optimization/96091] ICE during dom: tree check: expected integer_cst, have poly_int_cst in to_wide, at tree.h:5911

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Jul 7 07:30:00 GMT 2020


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96091

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Why should we not have a VECTOR_CST of POLY_INT_CST elements?  If POLY_INT_CST
is not "constant" then it shouldn't be tcc_constant?  Looks like

tree
vector_cst_elt (const_tree t, unsigned int i)
{
...
  /* Otherwise work out the value from the last two encoded elements.  */
  return wide_int_to_tree (TREE_TYPE (TREE_TYPE (t)),
                           vector_cst_int_elt (t, i));
}

should be using poly-ints and not wide-ints.  Richard?


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