[openrisc] OR16 related...

[jimmy87@sunplus.com.tw]

Hi ALL,
-----
Just now, I read some of IA64. I found one important issue related
to PAIR and sw/sh/sbpai register in IA64 document.

9.5.4 Using Post-increment Loads and Stores
  Post-increment loads and stores can improve performance by combining
two operands in a single instruction. Although the test in this
section mentions only post-increment loads, most of the
information applies to stores as well.
---
Therefore, I feel OR32 could have auto increment or auto decrement load/store
instructions....

Best regards, Jimmy