DM linker vs GCC linker?

[Andrea Fontana]

I'm working on a complex project for my company.
It's a text-parser that handles complex/ambiguos word-based grammars. It
reads a set of xml files that define rules, build some structures
(trees, dictionaries, etc..) and then parses your phrases.  It works
fine.

I compile sources in this (simple) way:
dmd -c *.d   (three source files)

If i link objects with dmd execution of unit tests takes:

Parsing: 722 ms, 419 μs, and 3 hnsecs

real	5m10.199s
user	5m9.771s
sys	0m0.236s


using gcc as linker:

Parsing: 425 ms, 677 μs, and 8 hnsecs

real	0m13.919s
user	0m13.845s
sys	0m0.088s


unittest outputs are identical and execution time of test phrases has
similar speed but dmd version takes a lot of time parsing xml and
building trees and other structures.

I can't post company code, but i wonder if this is a known issue... If
not i'll try to write some code to reproduce this problem...

Configuration:
Ubuntu 11.10 64bit
DMD64 D Compiler v2.056
gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) 

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