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https://github.com/RPCS3/llvm-mirror.git
synced 2026-07-22 03:35:31 -04:00
Reid Kleckner
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
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
//===- DominanceFrontier.cpp - Dominance Frontier Calculation -------------===//
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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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#include "llvm/Analysis/DominanceFrontier.h"
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#include "llvm/Analysis/DominanceFrontierImpl.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/IR/Dominators.h"
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#include "llvm/IR/Function.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/Compiler.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 llvm {
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template class DominanceFrontierBase<BasicBlock, false>;
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template class DominanceFrontierBase<BasicBlock, true>;
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template class ForwardDominanceFrontierBase<BasicBlock>;
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} // end namespace llvm
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char DominanceFrontierWrapperPass::ID = 0;
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INITIALIZE_PASS_BEGIN(DominanceFrontierWrapperPass, "domfrontier",
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"Dominance Frontier Construction", true, true)
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INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
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INITIALIZE_PASS_END(DominanceFrontierWrapperPass, "domfrontier",
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"Dominance Frontier Construction", true, true)
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DominanceFrontierWrapperPass::DominanceFrontierWrapperPass()
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: FunctionPass(ID), DF() {
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initializeDominanceFrontierWrapperPassPass(*PassRegistry::getPassRegistry());
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}
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void DominanceFrontierWrapperPass::releaseMemory() {
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DF.releaseMemory();
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}
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bool DominanceFrontierWrapperPass::runOnFunction(Function &) {
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releaseMemory();
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DF.analyze(getAnalysis<DominatorTreeWrapperPass>().getDomTree());
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return false;
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}
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void DominanceFrontierWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<DominatorTreeWrapperPass>();
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}
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void DominanceFrontierWrapperPass::print(raw_ostream &OS, const Module *) const {
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DF.print(OS);
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}
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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LLVM_DUMP_METHOD void DominanceFrontierWrapperPass::dump() const {
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print(dbgs());
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}
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#endif
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/// Handle invalidation explicitly.
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bool DominanceFrontier::invalidate(Function &F, const PreservedAnalyses &PA,
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FunctionAnalysisManager::Invalidator &) {
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// Check whether the analysis, all analyses on functions, or the function's
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// CFG have been preserved.
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auto PAC = PA.getChecker<DominanceFrontierAnalysis>();
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return !(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Function>>() ||
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PAC.preservedSet<CFGAnalyses>());
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}
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AnalysisKey DominanceFrontierAnalysis::Key;
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DominanceFrontier DominanceFrontierAnalysis::run(Function &F,
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FunctionAnalysisManager &AM) {
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DominanceFrontier DF;
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DF.analyze(AM.getResult<DominatorTreeAnalysis>(F));
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return DF;
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}
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DominanceFrontierPrinterPass::DominanceFrontierPrinterPass(raw_ostream &OS)
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: OS(OS) {}
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PreservedAnalyses
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DominanceFrontierPrinterPass::run(Function &F, FunctionAnalysisManager &AM) {
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OS << "DominanceFrontier for function: " << F.getName() << "\n";
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AM.getResult<DominanceFrontierAnalysis>(F).print(OS);
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return PreservedAnalyses::all();
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}
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