1 files changed, 111 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h b/contrib/llvm-project/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h
new file mode 100644
index 000000000000..5ea62b179d22
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h
@@ -0,0 +1,111 @@
+//==-- WebAssemblyTargetStreamer.h - WebAssembly Target Streamer -*- 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file declares WebAssembly-specific target streamer classes.
+/// These are for implementing support for target-specific assembly directives.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
+#define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
+
+#include "llvm/BinaryFormat/Wasm.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/MachineValueType.h"
+
+namespace llvm {
+
+class MCWasmStreamer;
+class MCSymbolWasm;
+
+/// WebAssembly-specific streamer interface, to implement support
+/// WebAssembly-specific assembly directives.
+class WebAssemblyTargetStreamer : public MCTargetStreamer {
+public:
+  explicit WebAssemblyTargetStreamer(MCStreamer &S);
+
+  /// .local
+  virtual void emitLocal(ArrayRef<wasm::ValType> Types) = 0;
+  /// .endfunc
+  virtual void emitEndFunc() = 0;
+  /// .functype
+  virtual void emitFunctionType(const MCSymbolWasm *Sym) = 0;
+  /// .indidx
+  virtual void emitIndIdx(const MCExpr *Value) = 0;
+  /// .globaltype
+  virtual void emitGlobalType(const MCSymbolWasm *Sym) = 0;
+  /// .eventtype
+  virtual void emitEventType(const MCSymbolWasm *Sym) = 0;
+  /// .import_module
+  virtual void emitImportModule(const MCSymbolWasm *Sym,
+                                StringRef ImportModule) = 0;
+  /// .import_name
+  virtual void emitImportName(const MCSymbolWasm *Sym,
+                              StringRef ImportName) = 0;
+
+protected:
+  void emitValueType(wasm::ValType Type);
+};
+
+/// This part is for ascii assembly output
+class WebAssemblyTargetAsmStreamer final : public WebAssemblyTargetStreamer {
+  formatted_raw_ostream &OS;
+  void emitSignature(const wasm::WasmSignature *Sig);
+  void emitParamList(const wasm::WasmSignature *Sig);
+  void emitReturnList(const wasm::WasmSignature *Sig);
+
+public:
+  WebAssemblyTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
+
+  void emitLocal(ArrayRef<wasm::ValType> Types) override;
+  void emitEndFunc() override;
+  void emitFunctionType(const MCSymbolWasm *Sym) override;
+  void emitIndIdx(const MCExpr *Value) override;
+  void emitGlobalType(const MCSymbolWasm *Sym) override;
+  void emitEventType(const MCSymbolWasm *Sym) override;
+  void emitImportModule(const MCSymbolWasm *Sym, StringRef ImportModule) override;
+  void emitImportName(const MCSymbolWasm *Sym, StringRef ImportName) override;
+};
+
+/// This part is for Wasm object output
+class WebAssemblyTargetWasmStreamer final : public WebAssemblyTargetStreamer {
+public:
+  explicit WebAssemblyTargetWasmStreamer(MCStreamer &S);
+
+  void emitLocal(ArrayRef<wasm::ValType> Types) override;
+  void emitEndFunc() override;
+  void emitFunctionType(const MCSymbolWasm *Sym) override {}
+  void emitIndIdx(const MCExpr *Value) override;
+  void emitGlobalType(const MCSymbolWasm *Sym) override {}
+  void emitEventType(const MCSymbolWasm *Sym) override {}
+  void emitImportModule(const MCSymbolWasm *Sym,
+                        StringRef ImportModule) override {}
+  void emitImportName(const MCSymbolWasm *Sym,
+                      StringRef ImportName) override {}
+};
+
+/// This part is for null output
+class WebAssemblyTargetNullStreamer final : public WebAssemblyTargetStreamer {
+public:
+  explicit WebAssemblyTargetNullStreamer(MCStreamer &S)
+      : WebAssemblyTargetStreamer(S) {}
+
+  void emitLocal(ArrayRef<wasm::ValType>) override {}
+  void emitEndFunc() override {}
+  void emitFunctionType(const MCSymbolWasm *) override {}
+  void emitIndIdx(const MCExpr *) override {}
+  void emitGlobalType(const MCSymbolWasm *) override {}
+  void emitEventType(const MCSymbolWasm *) override {}
+  void emitImportModule(const MCSymbolWasm *, StringRef) override {}
+  void emitImportName(const MCSymbolWasm *, StringRef) override {}
+};
+
+} // end namespace llvm
+
+#endif