Discussion: What is unspec_volatile?

[Peter Bergner]

On Sat, 2010-11-13 at 11:27 +0100, Paolo Bonzini wrote:
> On 11/12/2010 03:25 PM, H.J. Lu wrote:
> > IRA may move instructions across an unspec_volatile,
> 
> Do you have a testcase?

Are you sure it's IRA and not our old friend update_equiv_regs()
which IRA calls?  http://gcc.gnu.org/PR41171 shows an example
where update_equiv_regs() moves code around.

Peter