[xine-user] PowerPC Assembly Patch FIXED!

[<an...@ir...>]

Hello again,

I realized why my patch didn't apply - I did a modification to the patch
*after* I had made it (the modification was something that would have broken
non-PPC/x86 compiles). So, ...more testing please =)

I also wrote a small program to test how well the memcpy's work, here's it
s output:

Testing glibc memcpy (16 bytes, 20000000 iterations)...               328 (1/100 of a second)
Testing ppcasm_memcpy (16 bytes, 20000000 iterations)...               88 (1/100 of a second)
Testing ppcasm_cacheable_memcpy (16 bytes, 20000000 iterations)...    127 (1/100 of a second)

Testing glibc memcpy (1024 bytes, 500000 iterations)...                72 (1/100 of a second)
Testing ppcasm_memcpy (1024 bytes, 500000 iterations)...               65 (1/100 of a second)
Testing ppcasm_cacheable_memcpy (1024 bytes, 500000 iterations)...    106 (1/100 of a second)

Testing glibc memcpy (1048576 bytes, 100 iterations)...               128 (1/100 of a second)
Testing ppcasm_memcpy (1048576 bytes, 100 iterations)...              132 (1/100 of a second)
Testing ppcasm_cacheable_memcpy (1048576 bytes, 100 iterations)...     81 (1/100 of a second)

Testing glibc memcpy (16777216 bytes, 10 iterations)...               217 (1/100 of a second)
Testing ppcasm_memcpy (16777216 bytes, 10 iterations)...              216 (1/100 of a second)
Testing ppcasm_cacheable_memcpy (16777216 bytes, 10 iterations)...    142 (1/100 of a second)

The "problem" range for ppcasm_cacheable_memcpy seems to be about 512b-4096b
however, making a switchable memcpy makes things worse...

Ideas?

Andrew Patrikalakis

(PS: get the tester @ http://anrp.irulethe.net/memspeed.tar.bz2)