[mlir] Remove unused generator

This was a previous experiment that didn't pan out and needs to be
replaced, given no current use or tests, deleting instead and can start
new version fresh.

diff --git a/mlir/tools/mlir-tblgen/CMakeLists.txt b/mlir/tools/mlir-tblgen/CMakeLists.txt
index 455a934..fb9ba6e 100644 (file)
--- a/mlir/tools/mlir-tblgen/CMakeLists.txt
+++ b/mlir/tools/mlir-tblgen/CMakeLists.txt
@@ -12,7 +12,6 @@ add_tablegen(mlir-tblgen MLIR
   OpDocGen.cpp
   OpFormatGen.cpp
   OpInterfacesGen.cpp
-  ReferenceImplGen.cpp
   RewriterGen.cpp
   SPIRVUtilsGen.cpp
   StructsGen.cpp

diff --git a/mlir/tools/mlir-tblgen/ReferenceImplGen.cpp b/mlir/tools/mlir-tblgen/ReferenceImplGen.cpp
deleted file mode 100644 (file)
index a68a726..0000000
--- a/mlir/tools/mlir-tblgen/ReferenceImplGen.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-//===- ReferenceImplGen.cpp - MLIR reference implementation generator -----===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// ReferenceImplGen uses the description of operations to generate reference
-// implementations for the ops.
-//
-//===----------------------------------------------------------------------===//
-
-#include "mlir/TableGen/GenInfo.h"
-#include "mlir/TableGen/Operator.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/FormatVariadic.h"
-#include "llvm/Support/Signals.h"
-#include "llvm/TableGen/Error.h"
-#include "llvm/TableGen/Record.h"
-#include "llvm/TableGen/TableGenBackend.h"
-
-using namespace llvm;
-using namespace mlir;
-
-using mlir::tblgen::Operator;
-
-static void emitReferenceImplementations(const RecordKeeper &recordKeeper,
-                                         raw_ostream &os) {
-  emitSourceFileHeader("Reference implementation file", os);
-  const auto &defs = recordKeeper.getAllDerivedDefinitions("Op");
-
-  os << "void printRefImplementation(StringRef opName, mlir::FuncOp *f) {\n"
-     << "  using namespace ::mlir::edsc;\n"
-     << "if (false) {}";
-  for (auto *def : defs) {
-    Operator op(def);
-    auto referenceImplGenerator = def->getValueInit("referenceImplementation");
-    if (!referenceImplGenerator)
-      continue;
-    os << " else if (opName == \"" << op.getOperationName() << "\") {\n"
-       << "  edsc::ScopedContext scope(f);\n";
-
-    for (auto en : llvm::enumerate(op.getOperands())) {
-      os.indent(2) << formatv("ValueHandle arg_{0}(f->getArgument({1})); "
-                              "(void)arg_{0};\n",
-                              en.value().name, en.index());
-      // TODO(jpienaar): this is generally incorrect, not all args are memref
-      // in the general case.
-      os.indent(2) << formatv("MemRefView view_{0}(f->getArgument({1})); "
-                              "(void)view_{0};\n",
-                              en.value().name, en.index());
-    }
-    unsigned numOperands = op.getNumOperands();
-    unsigned numResults = op.getNumResults();
-    for (unsigned idx = 0; idx < numResults; ++idx) {
-      os.indent(2) << formatv("ValueHandle arg_{0}(f->getArgument({1})); "
-                              "(void)arg_{0};\n",
-                              op.getResult(idx).name, numOperands + idx);
-      // TODO(jpienaar): this is generally incorrect, not all args are memref
-      // in the general case.
-      os.indent(2) << formatv("MemRefView view_{0}(f->getArgument({1})); "
-                              "(void)view_{0};\n",
-                              op.getResult(idx).name, numOperands + idx);
-    }
-
-    // Print the EDSC.
-    os << referenceImplGenerator->getAsUnquotedString() << "\n";
-    os.indent(2) << "f->print(llvm::outs());\n\n";
-    os << "}";
-  }
-  os << " else {\n";
-  os.indent(2) << "f->emitError(\"no reference impl. for \" + opName);\n";
-  os.indent(2) << "return;\n";
-  os << "}\n";
-  os << "}\n";
-}
-
-static mlir::GenRegistration
-    genRegister("gen-reference-implementations",
-                "Generate reference implementations",
-                [](const RecordKeeper &records, raw_ostream &os) {
-                  emitReferenceImplementations(records, os);
-                  return false;
-                });