[PATCH] Middle-end dead code elimination
Wed Apr 16 20:44:00 GMT 2003
On Wed, 2003-04-16 at 16:33, firstname.lastname@example.org wrote:
> >This optimization centers around "expand_unreachable_stmt", a new
> >function, which is an analog of the existing "expand_stmt". The
> >semantics of this function are to skip all statements up until
> >the first label (case label or use label) where control flow can
> >resume and only emit RTL for this and later statements.
> What I think is going to make more sense is to run this earlier
> in the compilation process. Like right after we've generated the
> trees for the function instead of at expansion time. That way the
> tree-ssa path can benefit by having less useless stuff to translate
> into gimple (and eventually less rtl to generate).
Sounds interesting. Is this something that could be easily piggybacked
into the gimplification pass?
More information about the Gcc-patches