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- From: Segher Boessenkool <segher at kernel dot crashing dot org>
- To: GCC List <gcc at gcc dot gnu dot org>
- Date: Tue, 4 Mar 2008 01:25:33 +0100
- Subject: atomic accesses
The Linux kernel, and probably some user-space applications and
as well, depend on GCC guaranteeing (a variant of) the following:
"any access to a naturally aligned scalar object in memory
that is not a bit-field will be performed by a single machine
instruction whenever possible"
and it seems the current compiler actually does work like this.
I propose we add this text to the GCC manual (where?), so at least they
are right if/when they blame us for breaking that promise :-)