[X86] Add more addcarry tests

Summary: More addcarry tests for incoming https://reviews.llvm.org/D70079.

Reviewers: davezarzycki, RKSimon, spatel, craig.topper

Reviewed By: spatel

Subscribers: craig.topper, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70237