very slow --output-o generation even for trivial expressions

[TsurHerman]

tsurherman$ time julia -J/Applications/Julia-0.6.app/Contents/Resources/julia/lib/julia/sys.dylib --startup-file=no --output-o A.o -e"1+1"

real	1m44.981s
user	1m43.661s
sys	0m1.466s

I wonder if there a way to speed it up .. --output-ji performance on comparison is reasonable.

[JeffBezanson]

This is probably because optimizing and generating native code is the slowest part of the compiler. We desperately want to speed it up, but it doesn't seem to be easy.

[TsurHerman]

But in this example there is nothing much to compile .. just the expression 1+1 and this it is not even assigned so there is no new symbols defined .. the output of this run should be basically the .o version of sys.dylib no?