This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [tree-ssa] COND_EXPR lowering.
On Fri, 2003-10-24 at 12:57, Andrew MacLeod wrote:
> We dont always use stmt replacement do we?
>
> the insert_on_edge routines update the COND and THEN parts directly, so
> it has to be changed there. Perhaps it would be limited to those 2
> places, Im not sure.
>
The important thing is: will the statement iterators stop only at
COND_EXPR? Or will they also stop at THEN_CLAUSE and ELSE_CLAUSE? If
the latter is true, then both THEN_CLAUSE and ELSE_CLAUSE need to have
their BB set and we need to keep that in sync with the COND_EXPR.
Perhaps we ought to change the semantics of COND_EXPR completely and not
consider its clauses separate statements. If we are going to do this,
we need to make sure that the iterators never stop at the clauses, only
at the parent COND_EXPR.
Diego.