Re: [RFC] [tree-ssa] Fix handling of BIT_FIELD_REFs andVECTOR_TYPEs

["Paolo Bonzini" <bonzini at gnu dot org>]

I'm really sorry for messing up the lists with two copies of this message, one
of which partly edited.  Why are the Reply and Reply To All buttons so darn
identical?!?

> You had the right bits in your patch, already:

Ok, I will put them in the lowering patch when I get to submit it for
inclusion.

> Yes.  But to trigger the abort() all you need is something along the
> lines of
> if (TREE_CODE (stmt) == MODIFY_EXPR
>     && TREE_CODE (TREE_OPERAND (stmt, 0)) == BIT_FIELD_REF
>     && is_gimple_reg (TREE_OPERAND (TREE_OPERAND (stmt, 0), 0)))
>   abort();

Yes.  I'll add that to verify_stmts.

> The change to set_is_used is OK.  I think that the change to
> get_expr_operands shouldn't be necessary.

I'll try it on my tree, in the meanwhile I'll add the check above and
resubmit an updated patch tomorrow.

Paolo