[llvm] [SandboxIR] Added new StoreInst::create() functions with isVolatile arg (PR #100961)

[via llvm-commits]

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@@ -804,14 +804,23 @@ class StoreInst final : public Instruction {
   }
 
 public:
+  /// Return true if this is a load from a volatile memory location.
+  bool isVolatile() const { return cast<llvm::LoadInst>(Val)->isVolatile(); }
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vporpo wrote:

The build fails because this should be: `cast<llvm::StoreInst>(Val)`, not `llvm::LoadInst`.

https://github.com/llvm/llvm-project/pull/100961