AMDGPU/SILoadStoreOptimizer: Add helper functions for working with CombineInfo
Summary:
This is a refactoring that will make future improvements to this pass easier.
This change should not change the behavior of the pass.
Reviewers: arsenm, pendingchaos, rampitec, nhaehnle, vpykhtin
Reviewed By: nhaehnle, vpykhtin
Subscribers: kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65496
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@373366 91177308-0d34-0410-b5e6-96231b3b80d8