Most Intel CPU scheduler files lumped the immediate and 1 instructions
together, but uops.info shows they are quite different.
For the most part the by 1 instructions were pretty accurate to the uops.info
data except the latency was 3 instead of 2 as uops.info indicates.
The by immediate instructions need 7 or 8 uops and have higher latency.
It looks like the 8-bit by immediate instructions may need even more
uops, but I just lumped them with the 16/32/64.
Noticed while checking out PR53648. So mostly I cared about the by 1
instructions.
Reviewed By: RKSimon, pengfei
Differential Revision: https://reviews.llvm.org/D119217
