By default all objects are compiled with -Os. For the compress filter,
which has to deal with large amounts of uncompressed audio data,
gcc emits rather inefficient code. Switching to -O3 resulted in a 10%
performance improvement on my Lenovo laptop.
@[ -z "$(Q)" ] || echo 'CC $<'
$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @mad_cppflags@ $<
+$(object_dir)/compress_filter.o: compress_filter.c | $(object_dir)
+ @[ -z "$(Q)" ] || echo 'CC $<'
+ $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) -O3 $<
+
$(object_dir)/aacdec_filter.o: aacdec_filter.c | $(object_dir)
@[ -z "$(Q)" ] || echo 'CC $<'
$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<