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34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
//===- ReduceGlobalVars.cpp - Specialized Delta Pass ----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a function which calls the Generic Delta pass in order
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// to reduce initializers of Global Variables in the provided Module.
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//
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//===----------------------------------------------------------------------===//
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#include "ReduceGlobalVarInitializers.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/GlobalValue.h"
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using namespace llvm;
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/// Removes all the Initialized GVs that aren't inside the desired Chunks.
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static void extractGVsFromModule(Oracle &O, ReducerWorkItem &WorkItem) {
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// Drop initializers of out-of-chunk GVs
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for (auto &GV : WorkItem.getModule().globals())
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if (GV.hasInitializer() && !O.shouldKeep()) {
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GV.setInitializer(nullptr);
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GV.setLinkage(GlobalValue::LinkageTypes::ExternalLinkage);
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GV.setComdat(nullptr);
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}
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}
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void llvm::reduceGlobalsInitializersDeltaPass(TestRunner &Test) {
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runDeltaPass(Test, extractGVsFromModule, "Reducing GV Initializers");
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}
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