[AArch64][GlobalISel] Recognise some CCMPri

This is a simple addition to emitConditionalComparison, to match CCMP
with immediates using getIConstantVRegValWithLookThrough, letting it
select the CCMPri variants of the instructions.

Differential Revision: https://reviews.llvm.org/D131073

GitOrigin-RevId: 38c2366b3ffcc11da178b8d52814ef609e08d40f
2 files changed