public static int getSlotFromHash(long h) {
		int res = (int) ((h >> 32) & 0x1f);
		if (res == 31) {
			res = -1;
		}
		return res;
	}
Encode a particular PcodeOp and slot
@param op is the PcodeOp to preserve
@param slot is the slot to preserve (-1 for output, >=0 for input)
@param method is the method to use for encoding (4, 5, or 6)
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/DynamicHash.java