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Reid Kleckner
05da2fe521
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
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
//===- MIRPrintingPass.cpp - Pass that prints out using the MIR format ----===//
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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 pass that prints out the LLVM module using the MIR
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// serialization format.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MIRPrinter.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/InitializePasses.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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namespace {
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/// This pass prints out the LLVM IR to an output stream using the MIR
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/// serialization format.
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struct MIRPrintingPass : public MachineFunctionPass {
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static char ID;
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raw_ostream &OS;
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std::string MachineFunctions;
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MIRPrintingPass() : MachineFunctionPass(ID), OS(dbgs()) {}
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MIRPrintingPass(raw_ostream &OS) : MachineFunctionPass(ID), OS(OS) {}
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StringRef getPassName() const override { return "MIR Printing Pass"; }
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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bool runOnMachineFunction(MachineFunction &MF) override {
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std::string Str;
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raw_string_ostream StrOS(Str);
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printMIR(StrOS, MF);
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MachineFunctions.append(StrOS.str());
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return false;
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}
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bool doFinalization(Module &M) override {
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printMIR(OS, M);
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OS << MachineFunctions;
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return false;
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}
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};
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char MIRPrintingPass::ID = 0;
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} // end anonymous namespace
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char &llvm::MIRPrintingPassID = MIRPrintingPass::ID;
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INITIALIZE_PASS(MIRPrintingPass, "mir-printer", "MIR Printer", false, false)
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namespace llvm {
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MachineFunctionPass *createPrintMIRPass(raw_ostream &OS) {
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return new MIRPrintingPass(OS);
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}
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} // end namespace llvm
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