[Bug c++/84938] [7/8 Regression] internal compiler error: in gen_reg_rtx, at emit-rtl.c:1187 (gen_reg_rtx()/maybe_legitimize_operand())

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84938

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps instead of integer_zerop for div_by_zero build2 could use
div_by_zero = TREE_CONSTANT (arg1) && !integer_nonzerop (arg1);
i.e. be conservative rather than optimistic when arg1 is TREE_CONSTANT, but not
INTEGER_CST/COMPLEX_CST.  But integer_nonzerop doesn't handle for some reason
VECTOR_CSTs, so we'd either need to change integer_nonzerop or for now build2
to handle VECTOR_CST somehow.