================
@@ -0,0 +1,84 @@
+//===-- llvm/Target/TargetVerifier.h - LLVM IR Target Verifier --*- C++ 
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines target verifier interfaces that can be used for some
+// validation of input to the system, and for checking that transformations
+// haven't done something bad. In contrast to the Verifier or Lint, the
+// TargetVerifier looks for constructions invalid to a particular target
+// machine.
+//
+// To see what specifically is checked, look at TargetVerifier.cpp or an
+// individual backend's TargetVerifier.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_VERIFIER_H
+#define LLVM_TARGET_VERIFIER_H
+
+#include "llvm/IR/Module.h"
+#include "llvm/IR/PassManager.h"
+#include "llvm/TargetParser/Triple.h"
+
+namespace llvm {
+
+class Function;
+
+class TargetVerifierPass : public PassInfoMixin<TargetVerifierPass> {
+public:
+  virtual PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM) = 0;
+};
+
+class TargetVerify {
+protected:
+  void WriteValues(ArrayRef<const Value *> Vs) {
+    for (const Value *V : Vs) {
----------------
shiltian wrote:

I'd rename this to something more accurate because currently I don't know where 
it writes to.

https://github.com/llvm/llvm-project/pull/123609
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