[llvm-commits] [llvm-gcc-4.2] r117934 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Eric Christopher]

On Nov 1, 2010, at 10:37 AM, Bob Wilson wrote:

> I don't know so much about synchronization on other targets besides ARM, and
> since there was already a separate version of the barriers for ARM/Darwin,
> I've only changed that version.  It seems like this change would apply to
> other targets as well, but I don't know for sure.

x86 largely uses the lock prefix to handle this sort of thing as opposed to emitting
a memory barrier instruction (mfence, lfence, sfence).

This change in particular isn't real interesting for x86 since we'll still just use an
mfence there I think. :)

-eric