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68092989f3
This file lists every pass in LLVM, and is included by Pass.h, which is very popular. Every time we add, remove, or rename a pass in LLVM, it caused lots of recompilation. I found this fact by looking at this table, which is sorted by the number of times a file was changed over the last 100,000 git commits multiplied by the number of object files that depend on it in the current checkout: recompiles touches affected_files header 342380 95 3604 llvm/include/llvm/ADT/STLExtras.h 314730 234 1345 llvm/include/llvm/InitializePasses.h 307036 118 2602 llvm/include/llvm/ADT/APInt.h 213049 59 3611 llvm/include/llvm/Support/MathExtras.h 170422 47 3626 llvm/include/llvm/Support/Compiler.h 162225 45 3605 llvm/include/llvm/ADT/Optional.h 158319 63 2513 llvm/include/llvm/ADT/Triple.h 140322 39 3598 llvm/include/llvm/ADT/StringRef.h 137647 59 2333 llvm/include/llvm/Support/Error.h 131619 73 1803 llvm/include/llvm/Support/FileSystem.h Before this change, touching InitializePasses.h would cause 1345 files to recompile. After this change, touching it only causes 550 compiles in an incremental rebuild. Reviewers: bkramer, asbirlea, bollu, jdoerfert Differential Revision: https://reviews.llvm.org/D70211
139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
//===--- IRPrintingPasses.cpp - Module and Function printing passes -------===//
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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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// PrintModulePass and PrintFunctionPass implementations.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/IRPrintingPasses.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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PrintModulePass::PrintModulePass() : OS(dbgs()) {}
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PrintModulePass::PrintModulePass(raw_ostream &OS, const std::string &Banner,
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bool ShouldPreserveUseListOrder)
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: OS(OS), Banner(Banner),
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ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) {}
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PreservedAnalyses PrintModulePass::run(Module &M, ModuleAnalysisManager &) {
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if (llvm::isFunctionInPrintList("*")) {
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if (!Banner.empty())
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OS << Banner << "\n";
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M.print(OS, nullptr, ShouldPreserveUseListOrder);
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}
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else {
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bool BannerPrinted = false;
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for(const auto &F : M.functions()) {
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if (llvm::isFunctionInPrintList(F.getName())) {
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if (!BannerPrinted && !Banner.empty()) {
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OS << Banner << "\n";
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BannerPrinted = true;
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}
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F.print(OS);
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}
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}
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}
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return PreservedAnalyses::all();
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}
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PrintFunctionPass::PrintFunctionPass() : OS(dbgs()) {}
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PrintFunctionPass::PrintFunctionPass(raw_ostream &OS, const std::string &Banner)
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: OS(OS), Banner(Banner) {}
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PreservedAnalyses PrintFunctionPass::run(Function &F,
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FunctionAnalysisManager &) {
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if (isFunctionInPrintList(F.getName())) {
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if (forcePrintModuleIR())
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OS << Banner << " (function: " << F.getName() << ")\n" << *F.getParent();
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else
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OS << Banner << static_cast<Value &>(F);
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}
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return PreservedAnalyses::all();
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}
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namespace {
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class PrintModulePassWrapper : public ModulePass {
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PrintModulePass P;
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public:
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static char ID;
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PrintModulePassWrapper() : ModulePass(ID) {}
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PrintModulePassWrapper(raw_ostream &OS, const std::string &Banner,
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bool ShouldPreserveUseListOrder)
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: ModulePass(ID), P(OS, Banner, ShouldPreserveUseListOrder) {}
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bool runOnModule(Module &M) override {
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ModuleAnalysisManager DummyMAM;
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P.run(M, DummyMAM);
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return false;
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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}
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StringRef getPassName() const override { return "Print Module IR"; }
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};
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class PrintFunctionPassWrapper : public FunctionPass {
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PrintFunctionPass P;
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public:
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static char ID;
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PrintFunctionPassWrapper() : FunctionPass(ID) {}
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PrintFunctionPassWrapper(raw_ostream &OS, const std::string &Banner)
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: FunctionPass(ID), P(OS, Banner) {}
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// This pass just prints a banner followed by the function as it's processed.
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bool runOnFunction(Function &F) override {
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FunctionAnalysisManager DummyFAM;
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P.run(F, DummyFAM);
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return false;
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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}
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StringRef getPassName() const override { return "Print Function IR"; }
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};
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}
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char PrintModulePassWrapper::ID = 0;
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INITIALIZE_PASS(PrintModulePassWrapper, "print-module",
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"Print module to stderr", false, true)
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char PrintFunctionPassWrapper::ID = 0;
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INITIALIZE_PASS(PrintFunctionPassWrapper, "print-function",
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"Print function to stderr", false, true)
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ModulePass *llvm::createPrintModulePass(llvm::raw_ostream &OS,
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const std::string &Banner,
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bool ShouldPreserveUseListOrder) {
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return new PrintModulePassWrapper(OS, Banner, ShouldPreserveUseListOrder);
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}
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FunctionPass *llvm::createPrintFunctionPass(llvm::raw_ostream &OS,
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const std::string &Banner) {
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return new PrintFunctionPassWrapper(OS, Banner);
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}
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bool llvm::isIRPrintingPass(Pass *P) {
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const char *PID = (const char*)P->getPassID();
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return (PID == &PrintModulePassWrapper::ID) ||
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(PID == &PrintFunctionPassWrapper::ID);
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}
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