// assign new elements to slots
	s.startBlock(assign)
	p = s.variable(ptrVar, pt)                      // generates phi for ptr
	l = s.variable(lenVar, types.Types[types.TINT]) // generates phi for len
	if !inplace {
		c = s.variable(capVar, types.Types[types.TINT]) // generates phi for cap
	}

	if inplace {
		// Update length in place.
		// We have to wait until here to make sure growslice succeeded.