[PATCH] memset.S and PowerPC

[Steve Munroe]

Andreas Jaeger writes:

>> Please do not fix code this way.  glibc follows the GNU Coding
>> standards and those define how comments should be done.

Oops, I did not intend this as a final patch, to be integrated, but as a
work around for David Mueller to try. The final and preferred solution is a
bit more complicated ...

>> Do you really want a nop here?

I am not sure but the base code is full of comments like:

/* 40th instruction from .align */

Which implies that the alignment of code (within the i-cache) was
important. While this is likely only an important issue for early (601,
603, ...) PowerPC processors, I wanted to avoid messing with the implied
magic. This is not an important issue for the 64-bit PowerPC
implementations which I am most familiar. Perhaps Geoff remembers the
background on this? Does this still matter for the current inventory of
Linux/PowerPC systems in use today?

>> Can you send a clean, working patch, please?

I can, but do you want this patch or the more comprehensive solution that
deals with dcbz for different cache-line sizes?