[llvm] [SandboxIR] More boilerplate: Function, Argument, Constant, Instruction, OpaqueInst (PR #97343)

[via llvm-commits]

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@@ -142,16 +172,137 @@ class User : public Value {
     assert(isa<llvm::User>(Val) && "Expected User!");
   }
   void dumpCommonHeader(raw_ostream &OS) const final;
+  void dump(raw_ostream &OS) const override {
+    // TODO: Remove this tmp implementation once we get the Instruction classes.
+  }
+  LLVM_DUMP_METHOD void dump() const override {
+    // TODO: Remove this tmp implementation once we get the Instruction classes.
+  }
+#endif
+};
+
+class Constant : public sandboxir::User {
+public:
+  Constant(llvm::Constant *C, sandboxir::Context &SBCtx)
+      : sandboxir::User(ClassID::Constant, C, SBCtx) {}
+  /// For isa/dyn_cast.
+  static bool classof(const sandboxir::Value *From) {
+    return From->getSubclassID() == ClassID::Constant ||
+           From->getSubclassID() == ClassID::Function;
+  }
+  sandboxir::Context &getParent() const { return getContext(); }
+#ifndef NDEBUG
+  void verify() const final {
+    assert(isa<llvm::Constant>(Val) && "Expected Constant!");
+  }
+  friend raw_ostream &operator<<(raw_ostream &OS,
+                                 const sandboxir::Constant &SBC) {
+    SBC.dump(OS);
+    return OS;
+  }
+  void dump(raw_ostream &OS) const override;
+  LLVM_DUMP_METHOD void dump() const override;
+#endif
+};
+
+/// A sandboxir::User with operands and opcode.
+class Instruction : public sandboxir::User {
+public:
+  enum class Opcode {
+#define DEF_VALUE(ID, CLASS)
+#define DEF_USER(ID, CLASS)
+#define OP(OPC) OPC,
+#define OPCODES(...) __VA_ARGS__
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vporpo wrote:

Yeah OPCODES is not used yet. I will remove it.

https://github.com/llvm/llvm-project/pull/97343