Re: Fetch-and-store for PowerPC... and more!

[Kevin Ryde]

address@hidden (Ludovic Courtès) writes:
>
> I don't think so since `mem', as an address, isn't changed.

Yep, I meant the contents.

> `memory' denotes the reservation bit I guess).

No, memory normally means any crazy fetch or store, so gcc won't defer
storing stuff and wont hold stuff in registers across your asm.

"*mem" is the only actual change, so expressing that only it is
fetched/stored should give better code.  Though the actual current
usages are simple enough that it probably doesn't make any difference.