forked from OSchip/llvm-project
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
//===- Pass.cpp - Pass infrastructure implementation ----------------------===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =============================================================================
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//
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// This file implements common pass infrastructure.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Pass.h"
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#include "mlir/IR/Function.h"
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#include "mlir/IR/Module.h"
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#include "mlir/Support/PassNameParser.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/ManagedStatic.h"
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using namespace mlir;
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/// Out of line virtual method to ensure vtables and metadata are emitted to a
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/// single .o file.
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void Pass::anchor() {}
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/// Out of line virtual method to ensure vtables and metadata are emitted to a
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/// single .o file.
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void ModulePass::anchor() {}
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/// Function passes walk a module and look at each function with their
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/// corresponding hooks and terminates upon error encountered.
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PassResult FunctionPass::runOnModule(Module *m) {
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for (auto &fn : *m) {
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// All function passes ignore external functions.
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if (fn.empty())
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continue;
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if (runOnFunction(&fn))
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return failure();
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}
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return success();
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}
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// TODO: The pass registry and pass name parsing should be moved out.
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static llvm::ManagedStatic<llvm::DenseMap<const void *, PassInfo>> passRegistry;
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void mlir::registerPass(StringRef arg, StringRef description,
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const void *passID,
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const PassAllocatorFunction &function) {
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bool inserted = passRegistry
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->insert(std::make_pair(
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passID, PassInfo(arg, description, passID, function)))
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.second;
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assert(inserted && "Pass registered multiple times");
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(void)inserted;
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}
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/// Returns the pass info for the specified pass class or null if unknown.
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const PassInfo *mlir::Pass::lookupPassInfo(const void *passID) {
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auto it = passRegistry->find(passID);
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if (it == passRegistry->end())
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return nullptr;
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return &it->getSecond();
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}
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PassNameParser::PassNameParser(llvm::cl::Option &opt)
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: llvm::cl::parser<const PassInfo *>(opt) {
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for (const auto &kv : *passRegistry) {
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addLiteralOption(kv.second.getPassArgument(), &kv.second,
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kv.second.getPassDescription());
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}
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}
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void PassNameParser::printOptionInfo(const llvm::cl::Option &O,
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size_t GlobalWidth) const {
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PassNameParser *TP = const_cast<PassNameParser *>(this);
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llvm::array_pod_sort(TP->Values.begin(), TP->Values.end(),
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[](const PassNameParser::OptionInfo *VT1,
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const PassNameParser::OptionInfo *VT2) {
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return VT1->Name.compare(VT2->Name);
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});
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using llvm::cl::parser;
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parser<const PassInfo *>::printOptionInfo(O, GlobalWidth);
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}
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