[llvm] [SandboxIR] IR Tracker (PR #99238)

[via llvm-commits]

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@@ -630,6 +632,8 @@ class BasicBlock : public Value {
 class Context {
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vporpo wrote:

there is no real need for now, I've only had issues with the Use class, but yeah at some point I guess we should.

https://github.com/llvm/llvm-project/pull/99238