[Bug c/19923] New: openssl is slower when compiled with gcc 4.0 than 3.3

["gj at pointblue dot com dot pl" <gcc-bugzilla at gcc dot gnu dot org>]

here's openssl speed resoult when it's compiled with 3.3 (orginal debian 
unstable package): 
options:bn(64,32) md2(int) rc4(idx,int) des(ptr,risc1,16,long) aes(partial) 
blowfish(idx) 
compiler: gcc -fPIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H 
-DOPENSSL_NO_KRB5 -DOPENSSL_NO_IDEA -DOPENSSL_NO_MDC2 -DOPENSSL_NO_RC5 
-DL_ENDIAN -DTERMIO -O3 -march=i686 -mcpu=i686 -fomit-frame-pointer -Wall 
-DSHA1_ASM -DMD5_ASM -DRMD160_ASM 
available timing options: TIMES TIMEB HZ=100 [sysconf value] 
timing function used: times 
The 'numbers' are in 1000s of bytes per second processed. 
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes 
md2                510.80k     1064.79k     1486.96k     1641.83k     1702.87k 
mdc2                 0.00         0.00         0.00         0.00         0.00 
md4               4999.47k    17746.97k    51392.88k    97451.59k   131711.89k 
md5               4405.95k    15208.16k    43027.34k    77946.11k   101040.96k 
hmac(md5)         4951.58k    16851.67k    46126.90k    81002.65k   101700.77k 
sha1              3892.54k    12223.89k    29586.19k    45767.99k    54082.03k 
rmd160            3715.14k    10397.52k    23079.49k    33148.87k    37651.83k 
rc4              58941.98k    66899.63k    71733.39k    72572.54k    72476.92k 
des cbc          13353.92k    13897.80k    14067.26k    14088.53k    14107.61k 
des ede3          4887.63k     5039.28k     5083.63k     5116.70k     5086.58k 
idea cbc             0.00         0.00         0.00         0.00         0.00 
rc2 cbc           5257.37k     5534.13k     5560.97k     5610.12k     5582.42k 
rc5-32/12 cbc        0.00         0.00         0.00         0.00         0.00 
blowfish cbc     21054.83k    22340.34k    22704.49k    22895.90k    22860.91k 
cast cbc         14478.39k    15882.31k    16400.99k    16570.03k    16585.01k 
aes-128 cbc      13612.33k    14364.39k    14382.68k    14404.12k    14440.26k 
aes-192 cbc      12075.70k    12370.43k    12530.49k    12518.63k    12559.92k 
aes-256 cbc      10806.91k    11093.65k    11179.27k    11185.67k    11205.97k 
                  sign    verify    sign/s verify/s 
rsa  512 bits   0.0023s   0.0002s    438.5   4928.2 
rsa 1024 bits   0.0109s   0.0006s     91.6   1746.1 
rsa 2048 bits   0.0646s   0.0019s     15.5    527.6 
rsa 4096 bits   0.4317s   0.0066s      2.3    152.0 
                  sign    verify    sign/s verify/s 
dsa  512 bits   0.0018s   0.0022s    546.0    460.7 
dsa 1024 bits   0.0054s   0.0065s    186.6    154.8 
dsa 2048 bits   0.0179s   0.0220s     55.7     45.5 
 
and here's the same package compiled with gcc 4.0,  
gcc-4.0 (GCC) 4.0.0 20050212 (experimental) 
compiler: gcc -fPIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H 
-DOPENSSL_NO_KRB5 -DOPENSSL_NO_IDEA -DO 
PENSSL_NO_MDC2 -DOPENSSL_NO_RC5 -DL_ENDIAN -DTERMIO -O3 -march=i686 -mcpu=i686 
-fomit-frame-pointer -Wall -DSHA1_ASM 
-DMD5_ASM -DRMD160_ASM 
available timing options: TIMES TIMEB HZ=100 [sysconf value] 
timing function used: times 
The 'numbers' are in 1000s of bytes per second processed. 
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes 
md2                361.81k      781.01k     1103.19k     1231.36k     1278.84k 
mdc2                 0.00         0.00         0.00         0.00         0.00 
md4               3103.64k    11338.88k    36135.04k    79292.67k   123123.36k 
md5               2758.32k    10084.74k    31863.54k    66522.25k    98860.02k 
hmac(md5)         4581.08k    15784.49k    43771.66k    78227.60k   101959.42k 
sha1              2638.72k     8889.12k    24063.88k    41890.99k    53462.15k 
rmd160            2477.15k     7918.19k    19696.52k    31106.04k    37317.88k 
rc4              60284.27k    67543.46k    71379.34k    72455.38k    72581.12k 
des cbc          13547.77k    13876.64k    14049.67k    14102.25k    14020.78k 
des ede3          4950.20k     5050.99k     5068.80k     5111.00k     5088.06k 
idea cbc             0.00         0.00         0.00         0.00         0.00 
rc2 cbc           5814.75k     6060.45k     6150.37k     6169.60k     6196.13k 
rc5-32/12 cbc        0.00         0.00         0.00         0.00         0.00 
blowfish cbc     20941.23k    22373.68k    22868.43k    22822.28k    23014.29k 
cast cbc         12790.60k    14102.95k    14514.24k    14494.77k    14622.21k 
aes-128 cbc      13030.43k    13549.49k    13653.51k    13694.85k    13696.33k 
aes-192 cbc      11257.66k    11517.92k    11545.25k    11604.32k    11568.43k 
aes-256 cbc      10065.01k    10296.48k    10403.82k    10332.02k    10382.25k 
                  sign    verify    sign/s verify/s 
rsa  512 bits   0.0024s   0.0002s    418.5   4201.7 
rsa 1024 bits   0.0112s   0.0006s     89.5   1550.7 
rsa 2048 bits   0.0650s   0.0020s     15.4    504.9 
rsa 4096 bits   0.4311s   0.0068s      2.3    147.9 
                  sign    verify    sign/s verify/s 
dsa  512 bits   0.0019s   0.0023s    521.4    441.9 
dsa 1024 bits   0.0055s   0.0067s    182.9    148.3 
dsa 2048 bits   0.0181s   0.0222s     55.2     45.1 
 
as you can see almost each test is worst with 4.0.  
Not sure why. The same test on ultrasparc and amd64 shows 4.0 as clear winner. 
( Althou it still crashes on amd64... ;) )

-- 
           Summary: openssl is slower when compiled with gcc 4.0 than 3.3
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gj at pointblue dot com dot pl
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i86
  GCC host triplet: i86
GCC target triplet: i86


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19923