[PATCH 0/9] drop unneeded goto

From: Julia Lawall
Date: Thu May 28 2015 - 17:12:07 EST


These patches drop gotos that jump to a label that is at the next
instruction, in the case that the label is not used elsewhere in the
function. The complete semantic patch that performs this transformation is
as follows:

// <smpl>
@r@
position p;
identifier l;
@@

if (...) goto l@p;
l:

@script:ocaml s@
p << r.p;
nm;
@@

nm := (List.hd p).current_element

@ok exists@
identifier s.nm,l;
position p != r.p;
@@

nm(...) {
<+... goto l@p; ...+>
}

@depends on !ok@
identifier s.nm;
position r.p;
identifier l;
@@

nm(...) {
<...
- if(...) goto l@p; l:
...>
}
// </smpl>

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