That actually generates a locked memory or with zero or an mfence instruction. This intrinsic... actually does nothing, except to prevent the compiler from reordering loads and stores. If you want to do something with the CPU, you need to use a different intrinsic.
On Wed, Oct 16, 2013 at 12:44 PM, Eric Christopher <[email protected]>wrote: > > Can't use something like __sync_synchronize or is the behavior different? > > http://llvm-reviews.chandlerc.com/D1954 >
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