From: "Schmitt, Michael" <michael.schm...@dxc.com> Sent: Thursday, March 11, 2021 10:26 AM
I was taught long ago to add 1 to a register using LA r#,1(,r#) and to subtract 1 using BCTR r#,0.
Is the fastest way now to use AHI r#,1 and AHI r#,-1?
LA and BCTR are good when you don't want to change the CC. BCTR R,0 is specially good because it needs only 2 bytes.LA is good fir small values.
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