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Re: [tree-ssa] CCP and variable reference fixes [patch]


On Thu, 7 Nov 2002 07:36:17 -0500, Diego Novillo <dnovillo@redhat.com> wrote:

> - Removes unnecessary fields from tree_ref structure.  We don't
>   need to keep pointers into the expression nor operand for each
>   reference.  This makes it possible for a pass to replicate a
>   statement and replace references from the original statement
>   into the copy.

When rth and I were talking about this later, it occurred to me that if we
can have an expression with uses of two different defs of the same variable
in a single stmt, then we do need a use to refer directly to its instance
of the variable within the statement.

Jason


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