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diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.h b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.h
new file mode 100644
index 000000000000..4e55c81dec38
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+++ b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.h
@@ -0,0 +1,79 @@
+// WebAssemblyAsmPrinter.h - WebAssembly implementation of AsmPrinter-*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
+#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
+
+#include "WebAssemblyMachineFunctionInfo.h"
+#include "WebAssemblySubtarget.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+class MCSymbol;
+class WebAssemblyTargetStreamer;
+class WebAssemblyMCInstLower;
+
+class LLVM_LIBRARY_VISIBILITY WebAssemblyAsmPrinter final : public AsmPrinter {
+  const WebAssemblySubtarget *Subtarget;
+  const MachineRegisterInfo *MRI;
+  WebAssemblyFunctionInfo *MFI;
+  // TODO: Do the uniquing of Signatures here instead of ObjectFileWriter?
+  std::vector<std::unique_ptr<wasm::WasmSignature>> Signatures;
+
+public:
+  explicit WebAssemblyAsmPrinter(TargetMachine &TM,
+                                 std::unique_ptr<MCStreamer> Streamer)
+      : AsmPrinter(TM, std::move(Streamer)), Subtarget(nullptr), MRI(nullptr),
+        MFI(nullptr) {}
+
+  StringRef getPassName() const override {
+    return "WebAssembly Assembly Printer";
+  }
+
+  const WebAssemblySubtarget &getSubtarget() const { return *Subtarget; }
+  void addSignature(std::unique_ptr<wasm::WasmSignature> &&Sig) {
+    Signatures.push_back(std::move(Sig));
+  }
+
+  //===------------------------------------------------------------------===//
+  // MachineFunctionPass Implementation.
+  //===------------------------------------------------------------------===//
+
+  bool runOnMachineFunction(MachineFunction &MF) override {
+    Subtarget = &MF.getSubtarget<WebAssemblySubtarget>();
+    MRI = &MF.getRegInfo();
+    MFI = MF.getInfo<WebAssemblyFunctionInfo>();
+    return AsmPrinter::runOnMachineFunction(MF);
+  }
+
+  //===------------------------------------------------------------------===//
+  // AsmPrinter Implementation.
+  //===------------------------------------------------------------------===//
+
+  void EmitEndOfAsmFile(Module &M) override;
+  void EmitProducerInfo(Module &M);
+  void EmitTargetFeatures(Module &M);
+  void EmitJumpTableInfo() override;
+  void EmitConstantPool() override;
+  void EmitFunctionBodyStart() override;
+  void EmitInstruction(const MachineInstr *MI) override;
+  bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+                       const char *ExtraCode, raw_ostream &OS) override;
+  bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+                             const char *ExtraCode, raw_ostream &OS) override;
+
+  MVT getRegType(unsigned RegNo) const;
+  std::string regToString(const MachineOperand &MO);
+  WebAssemblyTargetStreamer *getTargetStreamer();
+};
+
+} // end namespace llvm
+
+#endif