12/18/2012 6:51 PM, Walter Bright пишет:
On 12/18/2012 1:33 AM, Dmitry Olshansky wrote:
More then that - the end result is the same: to avoid carrying junk
into an app
you (or compiler) still have to put each function in its own section.
That's what COMDATs are.
Okay..
Doing separate compilation I always (unless doing LTO or template
heavy code)
see either whole or nothing (D included). Most likely the compiler
will do it
for you only with a special switch.
dmd emits COMDATs for all global functions.
You can see this by running dumpobj on the output.
Thanks for carrying on this Q.
I'm using objconv by Agner Fog as I haven't got dumpobj (guess I'll buy
it if need be). However I see comments in dumped asm that mark section
boundaries that all functions are indeed in COMDAT sections.
Still linking these object files and disassembling output I see all of
functions are there intact. I've added debug symbols to the build though
- could it make optlink keep symbols?
After dropping debug info I can't yet make heads or tails of what's in
the exe yet but it _seems_ to not include all of the unused code. Gotta
investigate on a smaller sample.
--
Dmitry Olshansky
