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//===- unittests/Passes/DoublerPlugin.cpp
//--------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Passes/PassPlugin.h"
using namespace llvm;
struct DoublerModulePass : public PassInfoMixin<DoublerModulePass> {
// Double the value of the initializer
PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM) {
auto *GV = cast<GlobalVariable>(M.getNamedValue("doubleme"));
auto *Init = GV->getInitializer();
auto *Init2 = ConstantExpr::getAdd(Init, Init);
GV->setInitializer(Init2);
return PreservedAnalyses::none();
}
static void registerCallbacks(PassBuilder &PB) {
PB.registerPipelineParsingCallback(
[](StringRef Name, ModulePassManager &PM,
ArrayRef<PassBuilder::PipelineElement> InnerPipeline) {
if (Name == "doubler-pass") {
PM.addPass(DoublerModulePass());
return true;
}
return false;
});
}
};
extern "C" ::llvm::PassPluginLibraryInfo LLVM_ATTRIBUTE_WEAK
llvmGetPassPluginInfo() {
return {LLVM_PLUGIN_API_VERSION, "DoublerPlugin", "2.2-unit",
DoublerModulePass::registerCallbacks};
}
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