IRPrintingPasses.cpp
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//===--- IRPrintingPasses.cpp - Module and Function printing passes -------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// PrintModulePass and PrintFunctionPass implementations.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
PrintModulePass::PrintModulePass() : OS(dbgs()) {}
PrintModulePass::PrintModulePass(raw_ostream &OS, const std::string &Banner,
bool ShouldPreserveUseListOrder)
: OS(OS), Banner(Banner),
ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) {}
PreservedAnalyses PrintModulePass::run(Module &M, ModuleAnalysisManager &) {
if (llvm::isFunctionInPrintList("*")) {
if (!Banner.empty())
OS << Banner << "\n";
M.print(OS, nullptr, ShouldPreserveUseListOrder);
}
else {
bool BannerPrinted = false;
for(const auto &F : M.functions()) {
if (llvm::isFunctionInPrintList(F.getName())) {
if (!BannerPrinted && !Banner.empty()) {
OS << Banner << "\n";
BannerPrinted = true;
}
F.print(OS);
}
}
}
return PreservedAnalyses::all();
}
PrintFunctionPass::PrintFunctionPass() : OS(dbgs()) {}
PrintFunctionPass::PrintFunctionPass(raw_ostream &OS, const std::string &Banner)
: OS(OS), Banner(Banner) {}
PreservedAnalyses PrintFunctionPass::run(Function &F,
FunctionAnalysisManager &) {
if (isFunctionInPrintList(F.getName())) {
if (forcePrintModuleIR())
OS << Banner << " (function: " << F.getName() << ")\n" << *F.getParent();
else
OS << Banner << '\n' << static_cast<Value &>(F);
}
return PreservedAnalyses::all();
}
namespace {
class PrintModulePassWrapper : public ModulePass {
PrintModulePass P;
public:
static char ID;
PrintModulePassWrapper() : ModulePass(ID) {}
PrintModulePassWrapper(raw_ostream &OS, const std::string &Banner,
bool ShouldPreserveUseListOrder)
: ModulePass(ID), P(OS, Banner, ShouldPreserveUseListOrder) {}
bool runOnModule(Module &M) override {
ModuleAnalysisManager DummyMAM;
P.run(M, DummyMAM);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
}
StringRef getPassName() const override { return "Print Module IR"; }
};
class PrintFunctionPassWrapper : public FunctionPass {
PrintFunctionPass P;
public:
static char ID;
PrintFunctionPassWrapper() : FunctionPass(ID) {}
PrintFunctionPassWrapper(raw_ostream &OS, const std::string &Banner)
: FunctionPass(ID), P(OS, Banner) {}
// This pass just prints a banner followed by the function as it's processed.
bool runOnFunction(Function &F) override {
FunctionAnalysisManager DummyFAM;
P.run(F, DummyFAM);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
}
StringRef getPassName() const override { return "Print Function IR"; }
};
}
char PrintModulePassWrapper::ID = 0;
INITIALIZE_PASS(PrintModulePassWrapper, "print-module",
"Print module to stderr", false, true)
char PrintFunctionPassWrapper::ID = 0;
INITIALIZE_PASS(PrintFunctionPassWrapper, "print-function",
"Print function to stderr", false, true)
ModulePass *llvm::createPrintModulePass(llvm::raw_ostream &OS,
const std::string &Banner,
bool ShouldPreserveUseListOrder) {
return new PrintModulePassWrapper(OS, Banner, ShouldPreserveUseListOrder);
}
FunctionPass *llvm::createPrintFunctionPass(llvm::raw_ostream &OS,
const std::string &Banner) {
return new PrintFunctionPassWrapper(OS, Banner);
}
bool llvm::isIRPrintingPass(Pass *P) {
const char *PID = (const char*)P->getPassID();
return (PID == &PrintModulePassWrapper::ID) ||
(PID == &PrintFunctionPassWrapper::ID);
}