[Sparc] Fix incorrect operand for matching CMPri pattern

Summary:
It should be normal constant instead of target constant.
Pattern CMPri can be matched if the constant can be fitted into immediate field.
Otherwise, pattern CMPrr will be matched.
This fixed bug https://bugs.llvm.org/show_bug.cgi?id=44091.

Reviewers: dcederman, jyknight

Reviewed By: jyknight

Subscribers: jonpa, hiraditya, fedor.sergeev, jrtc27, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75227