AES speed regression in 1.0.0-stable-SNAP-20090705

[Carson Gaspar]

After compiling 1.0.0-stable-SNAP-20090705 I ran a couple of "openssl speed aes"
runs to lightly test the new code, and discovered a massive slowdown in small
bytesize AES compared to 0.9.8k, in some cases more than 50%. Is this known /
expected?

SunOS gandalf 5.10 Generic_138889-08 i86pc i386 i86pc
cc: Sun Ceres C 5.10 SunOS_i386 2009/03/06
Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz J3E1

OpenSSL 0.9.8k 25 Mar 2009
built on: Sun Mar 29 01:14:36 PDT 2009
options:bn(64,64) md2(int) rc4(1x,char) des(idx,cisc,16,int) aes(partial)
idea(int) blowfish(ptr2)
compiler: cc -KPIC -DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN
-DHAVE_DLFCN_H -fast -xregs=no%frameptr -m64 -xO5 -xtarget=native64 -xstrconst
-Xa -DL_ENDIAN -DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM
-DMD5_ASM -DAES_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
aes-128 cbc      94831.48k   129853.92k   143755.64k   148283.10k   148949.19k
aes-192 cbc      84238.07k   111794.94k   121016.41k   123522.05k   124600.59k
aes-256 cbc      76767.07k    98170.97k   105189.20k   107409.72k   108211.37k

OpenSSL 1.0.0-beta3-dev xx XXX xxxx
built on: Sun Jul  5 02:17:12 PDT 2009
options:bn(64,64) md2(int) rc4(1x,char) des(idx,cisc,16,int) aes(partial)
idea(int) blowfish(ptr2)
compiler: cc -KPIC -DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN
-DHAVE_DLFCN_H -fast  -xregs=no%frameptr -m64 -xO5 -xtarget=native64 -xstrconst
-Xa -DL_ENDIAN -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM
-DSHA512_ASM -DMD5_ASM -DAES_ASM -DWHIRLPOOL_ASM
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc      61707.79k    68382.02k    69846.02k   148577.23k   150757.46k
aes-192 cbc      52640.66k    57384.69k    58351.73k   125591.37k   126411.60k
aes-256 cbc      45788.29k    49243.79k    49864.60k   107354.03k   108159.06k

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