GCC 3.4.0 040114/GCC 3.5-tree-ssa 040120 compilation speed comparison.

[Karel Gardas <kgardas at objectsecurity dot com>]

Hello,

here is yet another report about compilation speed of tree-ssa against
3.4.0 version. The build time itself doesn't regress, but there are some
files which regress. For more information please read table below. Note:
files come from MICO 2.3.11 mico/orb directory. MICO configured with
--disable-static and then MakeVars file modified to include various
optimization options.


File		340-0O	tssa-O0	Delta%	340-O1	tssa-O1	Delta%	340-O2	tssa-O2	Delta%	340-O3	tssa-O3	Delta%	340-Os	tssa-Os	Delta%

os-unix.cc	5.33	5.98	-10.87	5.57	6.33	-12.01	5.73	6.37	-10.05	5.79	6.67	-13.19	5.65	6.2	-8.87
dii.cc		18.58	19.32	-3.83	20.79	21.32	-2.49	23.09	23.97	-3.67	23.57	24.48	-3.72	23.12	23.55	-1.83
typecode.cc	10.51	12.05	-12.78	14.12	16.85	-16.2	35.16	30.51	15.24	36.2	31.26	15.8	34.82	29.72	17.16
any.cc		7.65	9.09	-15.84	10.72	12.59	-14.85	13.8	15.47	-10.8	14.22	15.92	-10.68	13.44	14.77	-9
codec.cc	6.68	7.65	-12.68	8.51	10	-14.9	10.25	11.9	-13.87	11.22	12.54	-10.53	9.77	11.58	-15.63
buffer.cc	3.94	4.89	-19.43	4.26	5.02	-15.14	4.36	5.2	-16.15	4.53	5.47	-17.18	4.17	5.12	-18.55
context.cc	4.15	5.03	-17.5	4.56	5.41	-15.71	4.77	5.72	-16.61	5	6.11	-18.17	4.69	5.69	-17.57
except.cc	5.67	6.26	-9.42	6.32	6.92	-8.67	7.03	8.07	-12.89	7.57	8.43	-10.2	6.81	7.73	-11.9
dispatch.cc	5.62	6.31	-10.94	6.23	6.85	-9.05	6.19	6.93	-10.68	6.36	7.33	-13.23	6.16	6.91	-10.85
string.cc	3.95	4.89	-19.22	4.21	5.13	-17.93	4.07	4.98	-18.27	4.25	5.27	-19.35	4.08	4.85	-15.88
object.cc	5.81	6.65	-12.63	6.69	7.92	-15.53	7.92	8.59	-7.8	8.32	9.51	-12.51	7.75	8.55	-9.36
address.cc	6.05	6.78	-10.77	7.49	8.49	-11.78	8.06	9.17	-12.1	8.66	9.46	-8.46	7.98	8.58	-6.99
ior.cc		18.27	19.11	-4.4	20.84	22.23	-6.25	22.94	26.69	-14.05	23.61	27.02	-12.62	22.98	23.65	-2.83
orb.cc		23.08	24.78	-6.86	31.75	35.17	-9.72	44.84	42.94	4.42	47.87	41.36	15.74	45.83	39.62	15.67
boa.cc		10.98	12.29	-10.66	13.25	15.81	-16.19	18.65	20.26	-7.95	19.51	24.18	-19.31	18.69	20.28	-7.84
dsi.cc		16.01	16.49	-2.91	16.98	18.22	-6.81	18.49	19.04	-2.89	18.73	19.14	-2.14	18.46	18.79	-1.76
transport.cc	5.25	5.9	-11.02	5.66	6.27	-9.73	5.59	6.32	-11.55	5.69	6.59	-13.66	5.63	6.15	-8.46
t..port/tcp.cc	5.17	5.9	-12.37	5.42	6.14	-11.73	5.56	6.16	-9.74	5.67	6.55	-13.44	5.49	6.16	-10.88
t..port/udp.cc	5.24	5.88	-10.88	5.68	6.32	-10.13	5.84	9.55	-38.85	5.9	6.84	-13.74	5.75	6.48	-11.27
t..port/unix.cc	5.19	5.72	-9.27	5.51	6.11	-9.82	5.46	6.15	-11.22	5.49	6.51	-15.67	5.48	6.07	-9.72
iop.cc		22.42	24.12	-7.05	28.54	31.68	-9.91	35.09	41.38	-15.2	36.39	42.15	-13.67	34.63	40.19	-13.83
util.cc		7.02	7.92	-11.36	8.85	10.23	-13.49	11.44	12.07	-5.22	12.23	12.84	-4.75	11.18	11.71	-4.53
basic_seq.cc	4.32	5.17	-16.44	4.65	5.58	-16.67	4.5	5.44	-17.28	4.62	9.08	-49.12	4.51	8.18	-44.87
fast_array.cc	4.67	5.67	-17.64	5.32	5.78	-7.96	4.71	5.72	-17.66	5.4	6.03	-10.45	4.72	5.67	-16.75
ssl.cc		15.15	15.16	-0.07	15.84	18.45	-14.15	15.06	14.81	1.69	15.09	15.09	0	15.01	14.92	0.6
fixed.cc	4.34	5.3	-18.11	4.75	5.8	-18.1	5.03	5.94	-15.32	6.02	6.79	-11.34	4.87	5.65	-13.81
intercept.cc	15.75	16.17	-2.6	16.96	17.96	-5.57	17.73	23.06	-23.11	17.95	21.64	-17.05	17.52	21.6	-18.89
codeset.cc	6.91	7.81	-11.52	8.49	9.84	-13.72	12.01	13.06	-8.04	12.45	13.54	-8.05	11.76	12.73	-7.62
queue.cc	5.51	6.22	-11.41	5.96	6.56	-9.15	5.86	6.75	-13.19	6.11	9.16	-33.3	5.92	6.71	-11.77
static.cc	26.58	28.51	-6.77	32.03	37.92	-15.53	36.93	43.39	-14.89	41.05	42.2	-2.73	36.37	43.16	-15.73
current.cc	14.84	14.94	-0.67	14.83	14.77	0.41	14.41	14.36	0.35	14.41	18.08	-20.3	14.56	17.35	-16.08
policy_impl.cc	18.8	20.16	-6.75	19.92	24.73	-19.45	24.54	26.9	-8.77	21.75	24.64	-11.73	21.21	23.8	-10.88
service_info.cc	14.63	14.77	-0.95	14.61	14.86	-1.68	14.28	14.37	-0.63	14.33	14.74	-2.78	14.23	17.17	-17.12
ioptypes.cc	16.51	16.77	-1.55	18.01	18.87	-4.56	19.43	23.02	-15.6	19.6	23.56	-16.81	21.61	19.91	8.54
ssliop.cc	14.74	15.05	-2.06	14.91	18.3	-18.52	14.62	14.4	1.53	14.48	14.74	-1.76	14.55	17.27	-15.75
value.cc	16.66	16.93	-1.59	17.84	18.77	-4.95	18.31	21.94	-16.55	18.55	22.18	-16.37	18.29	18.84	-2.92
valuetype.cc	15.88	16.22	-2.1	16.38	16.91	-3.13	16.79	17.18	-2.27	17.44	18.42	-5.32	16.79	20.55	-18.3
v..type_impl.cc	18.64	19.23	-3.07	22.16	23.92	-7.36	23.1	20.65	11.86	20.07	24.58	-18.35	19.64	20.68	-5.03
dynany_impl.cc	11.74	15.12	-22.35	17.39	21.31	-18.4	26.15	31.94	-18.13	27.06	33.01	-18.02	28.92	31.43	-7.99
policy2.cc	14.77	17.86	-17.3	15	15.03	-0.2	14.81	17.54	-15.56	14.79	15.21	-2.76	14.79	18.16	-18.56
tckind.cc	14.87	14.69	1.23	14.58	18.12	-19.54	14.38	14.29	0.63	14.38	14.62	-1.64	14.44	14.33	0.77
orb_excepts.cc	14.89	15.05	-1.06	15.07	14.79	1.89	14.68	14.62	0.41	14.65	17.72	-17.33	14.76	14.54	1.51
policy.cc	14.52	14.86	-2.29	14.78	14.93	-1	14.61	14.47	0.97	14.68	14.93	-1.67	14.55	17.49	-16.81
poa.cc		19.07	19.9	-4.17	24.37	23.64	3.09	25.03	27.64	-9.44	24.2	25.96	-6.78	26.41	25.06	5.39
poa_base.cc	15.95	16.77	-4.89	16.7	20.26	-17.57	18.16	18.77	-3.25	18.18	21.71	-16.26	17.98	21.53	-16.49
poa_impl.cc	23.81	28.66	-16.92	28.09	32.61	-13.86	37.47	40.79	-8.14	36.44	38.95	-6.44	35.23	40.53	-13.08
dynany.cc	15.97	16.58	-3.68	16.65	20.34	-18.14	17.8	18.17	-2.04	17.88	22.29	-19.78	17.72	20.82	-14.89
uni_base64.cc	0.12	0.14	-14.29	0.2	0.23	-13.04	0.27	0.3	-10	0.27	0.31	-12.9	1.53	0.27	466.67
uni_unicode.cc	0.21	0.25	-16	0.29	0.35	-17.14	0.45	0.55	-18.18	0.47	0.56	-16.07	1.19	0.52	128.85
uni_fromuni.cc	0.41	0.55	-25.45	0.61	0.82	-25.61	1.09	1.36	-19.85	1.68	2.19	-23.29	1.16	1.4	-17.14
uni_touni.cc	0.47	0.56	-16.07	0.71	0.86	-17.44	1.19	1.4	-15	2.16	2.07	4.35	1.23	1.34	-8.21
except2.cc	7.47	8.84	-15.5	11.13	12.62	-11.81	13.35	14.54	-8.18	14.06	15.18	-7.38	13.21	13.98	-5.51
pi.cc		17.53	21.15	-17.12	18.53	19.54	-5.17	19.46	23.4	-16.84	19.58	23.79	-17.7	19.36	22.44	-13.73
pi_impl.cc	24.79	27.21	-8.89	31.69	35.44	-10.58	39.06	39.2	-0.36	38.13	39.93	-4.51	39.85	37.62	5.93
typecode_seq.cc	14.99	15.28	-1.9	15.27	15.46	-1.23	15.15	18.32	-17.3	15.28	18.75	-18.51	15.29	19.81	-22.82
timebase.cc	14.44	14.56	-0.82	14.71	17.23	-14.63	14.58	14.64	-0.41	14.51	14.74	-1.56	14.47	14.59	-0.82
ir.cc		53.89	76.48	-29.54	80.16	98.9	-18.95	127.22	148.68	-14.43	126.58	151.34	-16.36	129.06	149.94	-13.93
ir_base.cc	17.64	18.78	-6.07	19.41	23.67	-18	21.36	23.32	-8.4	21.54	26.66	-19.2	21.63	23.07	-6.24
imr.cc		23.93	23.03	3.91	27.56	27.46	0.36	31.53	36.89	-14.53	32.09	35.24	-8.94	31.99	36.46	-12.26
mtdebug.cc	4.61	5.66	-18.55	5.03	5.71	-11.91	4.55	5.42	-16.05	4.65	5.75	-19.13	4.54	5.4	-15.93

Sum		742.59	819.07	-9.34	862.54	969.35	-11.02	1023.99	1124.68	-8.95	1039.36	1161.01	-10.48	1023.43	1117.27	-8.4


Conclusion: tree-ssa has slower startup than 3.4.0 (small files like
uni_*.cc) and also some problems with compiling quite large files (ir.cc).
There is only minority of files on which tree-ssa is faster than 3.4.0.
All builds with tree-ssa are slower than those with 3.4.0 version.

Cheers,

Karel
--
Karel Gardas                  kgardas@objectsecurity.com
ObjectSecurity Ltd.           http://www.objectsecurity.com