Anyways, I've tweaked the GDC codegen, and program speed meets that of
C++ now (on my system).
Implementation: http://ideone.com/0j0L1
Command-line:
gdc -O3 -mfpmath=sse -ffast-math -march=native -frelease
g++ bench.cc -O3 -mfpmath=sse -ffast-math -march=native
Best times:
G++-32bit: 11400000 vps
GDC-32bit: 11350000 vps
Regards
Iain
64Bit:
C++:
45010000
44270000
42740000
43900000
44680000
43490000
42390000
GDC:
42900000
44010000
44000000
44010000
44010000
44000000
GDC with -fno-bounds-check:
43280000
44440000
44420000
44340000
44440000
44450000
