[llvm] [SandboxVec][DAG] Build actual dependencies (PR #111094)

[Sriraman Tallam via llvm-commits]

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@@ -86,13 +88,20 @@ class DGNode {
            (!(II = dyn_cast<IntrinsicInst>(I)) || isMemIntrinsic(II));
   }
 
+  /// \Returns true if \p I is fence like. It excludes non-mem intrinsics.
+  static bool isFenceLike(Instruction *I) {
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tmsri wrote:

Why is this not in SandboxIR/Utils.h?

https://github.com/llvm/llvm-project/pull/111094