[llvm] [AMDGPU] Add alignment attr & propagate alignment through make.buffer.rsrc inst (PR #145278)

[Shilei Tian via llvm-commits]

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@@ -1355,6 +1355,12 @@ struct InformationCache {
   /// Return the flat address space if the associated target has.
   LLVM_ABI std::optional<unsigned> getFlatAddressSpace() const;
 
+  virtual bool shouldTrackUse(const AbstractAttribute *QueryingAA,
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shiltian wrote:

Why do we need this?

https://github.com/llvm/llvm-project/pull/145278