// Put the new element at the beginning,
			// since it is the most likely to be newly used.
			if debugCheckCache && checkPC != 0 {
				if checkVal != val || checkPC != prevpc {
					print("runtime: table value ", val, "@", prevpc, " != cache value ", checkVal, "@", checkPC, " at PC ", targetpc, " off ", off, "\n")
					throw("bad pcvalue cache")
				}
			} else {
				mp := acquirem()