Extracts an TargetX86Base target which will be used as the common X86{32,64} implementation.

src/IceAssemblerX8664.h

Index: src/IceAssemblerX8664.h
diff --git a/src/IceAssemblerX8664.h b/src/IceAssemblerX8664.h
new file mode 100644
index 0000000000000000000000000000000000000000..3ed52a88c6d5bd307b72e469f3a646a7954ac95a
--- /dev/null
+++ b/src/IceAssemblerX8664.h
@@ -0,0 +1,63 @@
+//===- subzero/src/IceAssemberX8664.h - Assembler for x86-64 ----*- C++ -*-===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Assembler class for x86-64.h.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_ICEASSEMBLERX8664_H
+#define SUBZERO_SRC_ICEASSEMBLERX8664_H
+
+#include "IceAssembler.h"
+
+namespace Ice {
+namespace X8664 {
+
+class AssemblerX8664 final : public Assembler {
+  AssemblerX8664(const AssemblerX8664 &) = delete;
+  AssemblerX8664 &operator=(const AssemblerX8664 &) = delete;
+
+public:
+  explicit AssemblerX8664(bool use_far_branches = false) : Assembler() {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  void alignFunction() override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  void padWithNop(intptr_t Padding) override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  SizeT getBundleAlignLog2Bytes() const override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  const char *getNonExecPadDirective() const override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  void bindCfgNodeLabel(SizeT NodeNumber) override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+
+  bool fixupIsPCRel(FixupKind Kind) const override {
+    llvm::report_fatal_error("Not yet implemented");
+  }
+};
+
+} // end of namespace X8664
+} // end of namespace Ice
+
+#endif // SUBZERO_SRC_ICEASSEMBLERX8664_H