vendor/llvm-project/llvmorg-12-init-17869-g8e464dd76bef

1 files changed, 64 insertions, 0 deletions

diff --git a/llvm/lib/TableGen/TableGenBackendSkeleton.cpp b/llvm/lib/TableGen/TableGenBackendSkeleton.cpp
new file mode 100644
index 000000000000..4ce88e003e65
--- /dev/null
+++ b/llvm/lib/TableGen/TableGenBackendSkeleton.cpp
@@ -0,0 +1,64 @@
+//===- SkeletonEmitter.cpp - Skeleton TableGen backend          -*- 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 Tablegen backend emits ...
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include <algorithm>
+#include <set>
+#include <string>
+#include <vector>
+
+#define DEBUG_TYPE "skeleton-emitter"
+
+using namespace llvm;
+
+namespace {
+
+// Any helper data structures can be defined here. Some backends use
+// structs to collect information from the records.
+
+class SkeletonEmitter {
+private:
+  RecordKeeper &Records;
+
+public:
+  SkeletonEmitter(RecordKeeper &RK) : Records(RK) {}
+
+  void run(raw_ostream &OS);
+}; // emitter class
+
+} // anonymous namespace
+
+void SkeletonEmitter::run(raw_ostream &OS) {
+  emitSourceFileHeader("Skeleton data structures", OS);
+
+  (void)Records; // To suppress unused variable warning; remove on use.
+}
+
+namespace llvm {
+
+// The only thing that should be in the llvm namespace is the
+// emitter entry point function.
+
+void EmitSkeleton(RecordKeeper &RK, raw_ostream &OS) {
+  // Instantiate the emitter class and invoke run().
+  SkeletonEmitter(RK).run(OS);
+}
+
+} // namespace llvm