const runtime.mProfCycleWrap

2 uses

	runtime (current package)
		mprof.go#L160: const mProfCycleWrap = uint32(len(memRecord{}.future)) * (2 << 24)
		mprof.go#L285: 	mProf.cycle = (mProf.cycle + 1) % mProfCycleWrap