On Wed, Mar 07, 2012 at 03:05:58PM +0400, Kirill Yukhin wrote:
> Hello guys,
> I am attaching initial patch which enables TSX's HLE [1] prefixes in
> GCC. Since we have no official intrinsics declarations, I want to hear
> your comments about the patch

I think this is a wrong approach.  Instead we should use for this a flag
on the __atomic_* builtins (some higher bit of the memmodel) that would
say we want to emit an XACQUIRE or XRELEASE insn prefix.

> Note, there is no option '-mhle' and no tests (I'll do that after)
> [1] - 
> http://software.intel.com/en-us/blogs/2012/02/07/transactional-synchronization-in-haswell/


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