64 lines · cpp
1//===- SymbolPrivatize.cpp - Pass to mark symbols private -----------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements an pass that marks all symbols as private unless10// excluded.11//12//===----------------------------------------------------------------------===//13 14#include "mlir/Transforms/Passes.h"15 16#include "mlir/IR/SymbolTable.h"17 18namespace mlir {19#define GEN_PASS_DEF_SYMBOLPRIVATIZE20#include "mlir/Transforms/Passes.h.inc"21} // namespace mlir22 23using namespace mlir;24 25namespace {26struct SymbolPrivatize : public impl::SymbolPrivatizeBase<SymbolPrivatize> {27 explicit SymbolPrivatize(ArrayRef<std::string> excludeSymbols);28 LogicalResult initialize(MLIRContext *context) override;29 void runOnOperation() override;30 31 /// Symbols whose visibility won't be changed.32 DenseSet<StringAttr> excludedSymbols;33};34} // namespace35 36SymbolPrivatize::SymbolPrivatize(llvm::ArrayRef<std::string> excludeSymbols) {37 exclude = excludeSymbols;38}39 40LogicalResult SymbolPrivatize::initialize(MLIRContext *context) {41 for (const std::string &symbol : exclude)42 excludedSymbols.insert(StringAttr::get(context, symbol));43 return success();44}45 46void SymbolPrivatize::runOnOperation() {47 for (Region ®ion : getOperation()->getRegions()) {48 for (Block &block : region) {49 for (Operation &op : block) {50 auto symbol = dyn_cast<SymbolOpInterface>(op);51 if (!symbol)52 continue;53 if (!excludedSymbols.contains(symbol.getNameAttr()))54 symbol.setVisibility(SymbolTable::Visibility::Private);55 }56 }57 }58}59 60std::unique_ptr<Pass>61mlir::createSymbolPrivatizePass(ArrayRef<std::string> exclude) {62 return std::make_unique<SymbolPrivatize>(exclude);63}64