[Patch] libitm: add HTM fastpath

[Torvald Riegel]

On Tue, 2012-11-06 at 08:11 -0800, Richard Henderson wrote:
> On 2012-11-05 17:09, Torvald Riegel wrote:
> > +  if (likely(htm_fastpath && (prop & pr_hasNoAbort)))
> 
> For reference, could the NoAbort clause be relaxed with an htm check
> in abortTransaction, and the use of an xabort insn with an appropriate
> code to indicate user abort?

We have been discussing this off-line, and might have a patch for this
at a later point in time.

For now, I've committed the patch with Uros change applied.