llvm-project/llvm/tools/llvm-reduce/deltas/ReduceGlobalVarInitializers.cpp
Kazu Hirata ef2531b63c
[llvm-reduce] Remove unused includes (NFC) (#141322)
These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.
2025-05-23 23:58:52 -07:00

32 lines
1.2 KiB
C++

//===- ReduceGlobalVars.cpp - Specialized Delta Pass ----------------------===//
//
// 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 file implements a function which calls the Generic Delta pass in order
// to reduce initializers of Global Variables in the provided Module.
//
//===----------------------------------------------------------------------===//
#include "ReduceGlobalVarInitializers.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Value.h"
#include "llvm/Transforms/Utils/Cloning.h"
using namespace llvm;
/// Removes all the Initialized GVs that aren't inside the desired Chunks.
void llvm::reduceGlobalsInitializersDeltaPass(Oracle &O,
ReducerWorkItem &WorkItem) {
// Drop initializers of out-of-chunk GVs
for (auto &GV : WorkItem.getModule().globals())
if (GV.hasInitializer() && !O.shouldKeep()) {
GV.setInitializer(nullptr);
GV.setLinkage(GlobalValue::LinkageTypes::ExternalLinkage);
GV.setComdat(nullptr);
}
}