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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
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
//===- MachineDominanceFrontier.cpp ---------------------------------------===//
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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/CodeGen/MachineDominanceFrontier.h"
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#include "llvm/Analysis/DominanceFrontierImpl.h"
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#include "llvm/CodeGen/MachineDominators.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/InitializePasses.h"
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using namespace llvm;
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namespace llvm {
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template class DominanceFrontierBase<MachineBasicBlock, false>;
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template class DominanceFrontierBase<MachineBasicBlock, true>;
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template class ForwardDominanceFrontierBase<MachineBasicBlock>;
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}
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char MachineDominanceFrontier::ID = 0;
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INITIALIZE_PASS_BEGIN(MachineDominanceFrontier, "machine-domfrontier",
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"Machine Dominance Frontier Construction", true, true)
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INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
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INITIALIZE_PASS_END(MachineDominanceFrontier, "machine-domfrontier",
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"Machine Dominance Frontier Construction", true, true)
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MachineDominanceFrontier::MachineDominanceFrontier()
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: MachineFunctionPass(ID),
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Base() {
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initializeMachineDominanceFrontierPass(*PassRegistry::getPassRegistry());
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}
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char &llvm::MachineDominanceFrontierID = MachineDominanceFrontier::ID;
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bool MachineDominanceFrontier::runOnMachineFunction(MachineFunction &) {
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releaseMemory();
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Base.analyze(getAnalysis<MachineDominatorTree>().getBase());
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return false;
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}
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void MachineDominanceFrontier::releaseMemory() {
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Base.releaseMemory();
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}
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void MachineDominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<MachineDominatorTree>();
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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