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Re: [RFC] IL cleanups
- From: Diego Novillo <dnovillo at redhat dot com>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 04 May 2006 11:39:41 -0400
- Subject: Re: [RFC] IL cleanups
- References: <10605041219.AA02222@vlsi1.ultra.nyu.edu>
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Richard Kenner wrote on 05/04/06 08:19:
> * Introduce the notion of GIMPLE statements and GIMPLE
> expressions. Each has attributes that the other does not need. A
> statement will have location information and no type, while an
> expression will have type and no location information.
>
> Expressions need locations too for proper debugging information.
Yes, but when we map into GIMPLE, a multi-line, multi-expression
statement will be converted into many GIMPLE statements, each one will
carry the location info from the original statement adjusted with the
line number of each expression (I'm hoping this can be carried from the
FE into GIMPLE somewhat easily?).
My thinking with this was that GIMPLE expressions don't need the
location info because it will always be associated with the containing
statement. Expressions in GIMPLE are always the RHS of an assignment,
so we store the location to the assignment, not the expression.
Or is this not feasible?
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