dead function elimination
Thu Nov 9 08:49:00 GMT 2006
> Can gcc or ld perform dead procedure elimination apart from using the
> combination of --gc-sections/-ffunction-sections?
(Why are you excluding the --gc-sections / -ffunction-sections pairing
which were designed precisely for this purpose ?)
The short answer is yes. Gcc can and will eliminate unused local
procedures, and with its --whole-program option it can even eliminate
unused non-local procedures.
But your question implies that you are asking if between them the linker
and compiler can eliminate unused procedures without recompilation of
all the sources, and in this case the answer is no.
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