​
On Wed, Mar 11, 2015 at 10:49 AM, John McKown <[email protected]>
wrote:

> Given some of the new instructions, such as LGZR, I wish IBM would
> publish a manual with a title like: "What were the architects thinking
> of? Explanation of the reasons behind the instructions in the z
> architecture".
> ​...
>

"​To make the code compiled by the C/C++ compiler and/or WebSphere / Java
code run faster" is the answer to ANY "Why?" question about new
instructions, IMHO...

​
Mike Shaw
MVS/QuickRef Support Group
Chicago-Soft, Ltd.

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