mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-18 18:42:46 +02:00
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
150 lines
4.8 KiB
C++
150 lines
4.8 KiB
C++
//===- lib/Codegen/MachineRegionInfo.cpp ----------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MachineRegionInfo.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/Analysis/RegionInfoImpl.h"
|
|
#include "llvm/CodeGen/MachinePostDominators.h"
|
|
#include "llvm/Config/llvm-config.h"
|
|
#include "llvm/InitializePasses.h"
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
#include "llvm/Support/Debug.h"
|
|
|
|
#define DEBUG_TYPE "machine-region-info"
|
|
|
|
using namespace llvm;
|
|
|
|
STATISTIC(numMachineRegions, "The # of machine regions");
|
|
STATISTIC(numMachineSimpleRegions, "The # of simple machine regions");
|
|
|
|
namespace llvm {
|
|
|
|
template class RegionBase<RegionTraits<MachineFunction>>;
|
|
template class RegionNodeBase<RegionTraits<MachineFunction>>;
|
|
template class RegionInfoBase<RegionTraits<MachineFunction>>;
|
|
|
|
} // end namespace llvm
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MachineRegion implementation
|
|
|
|
MachineRegion::MachineRegion(MachineBasicBlock *Entry, MachineBasicBlock *Exit,
|
|
MachineRegionInfo* RI,
|
|
MachineDominatorTree *DT, MachineRegion *Parent) :
|
|
RegionBase<RegionTraits<MachineFunction>>(Entry, Exit, RI, DT, Parent) {}
|
|
|
|
MachineRegion::~MachineRegion() = default;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MachineRegionInfo implementation
|
|
|
|
MachineRegionInfo::MachineRegionInfo() = default;
|
|
|
|
MachineRegionInfo::~MachineRegionInfo() = default;
|
|
|
|
void MachineRegionInfo::updateStatistics(MachineRegion *R) {
|
|
++numMachineRegions;
|
|
|
|
// TODO: Slow. Should only be enabled if -stats is used.
|
|
if (R->isSimple())
|
|
++numMachineSimpleRegions;
|
|
}
|
|
|
|
void MachineRegionInfo::recalculate(MachineFunction &F,
|
|
MachineDominatorTree *DT_,
|
|
MachinePostDominatorTree *PDT_,
|
|
MachineDominanceFrontier *DF_) {
|
|
DT = DT_;
|
|
PDT = PDT_;
|
|
DF = DF_;
|
|
|
|
MachineBasicBlock *Entry = GraphTraits<MachineFunction*>::getEntryNode(&F);
|
|
|
|
TopLevelRegion = new MachineRegion(Entry, nullptr, this, DT, nullptr);
|
|
updateStatistics(TopLevelRegion);
|
|
calculate(F);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MachineRegionInfoPass implementation
|
|
//
|
|
|
|
MachineRegionInfoPass::MachineRegionInfoPass() : MachineFunctionPass(ID) {
|
|
initializeMachineRegionInfoPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
MachineRegionInfoPass::~MachineRegionInfoPass() = default;
|
|
|
|
bool MachineRegionInfoPass::runOnMachineFunction(MachineFunction &F) {
|
|
releaseMemory();
|
|
|
|
auto DT = &getAnalysis<MachineDominatorTree>();
|
|
auto PDT = &getAnalysis<MachinePostDominatorTree>();
|
|
auto DF = &getAnalysis<MachineDominanceFrontier>();
|
|
|
|
RI.recalculate(F, DT, PDT, DF);
|
|
|
|
LLVM_DEBUG(RI.dump());
|
|
|
|
return false;
|
|
}
|
|
|
|
void MachineRegionInfoPass::releaseMemory() {
|
|
RI.releaseMemory();
|
|
}
|
|
|
|
void MachineRegionInfoPass::verifyAnalysis() const {
|
|
// Only do verification when user wants to, otherwise this expensive check
|
|
// will be invoked by PMDataManager::verifyPreservedAnalysis when
|
|
// a regionpass (marked PreservedAll) finish.
|
|
if (MachineRegionInfo::VerifyRegionInfo)
|
|
RI.verifyAnalysis();
|
|
}
|
|
|
|
void MachineRegionInfoPass::getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<MachineDominatorTree>();
|
|
AU.addRequired<MachinePostDominatorTree>();
|
|
AU.addRequired<MachineDominanceFrontier>();
|
|
MachineFunctionPass::getAnalysisUsage(AU);
|
|
}
|
|
|
|
void MachineRegionInfoPass::print(raw_ostream &OS, const Module *) const {
|
|
RI.print(OS);
|
|
}
|
|
|
|
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
|
|
LLVM_DUMP_METHOD void MachineRegionInfoPass::dump() const {
|
|
RI.dump();
|
|
}
|
|
#endif
|
|
|
|
char MachineRegionInfoPass::ID = 0;
|
|
char &MachineRegionInfoPassID = MachineRegionInfoPass::ID;
|
|
|
|
INITIALIZE_PASS_BEGIN(MachineRegionInfoPass, DEBUG_TYPE,
|
|
"Detect single entry single exit regions", true, true)
|
|
INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
|
|
INITIALIZE_PASS_DEPENDENCY(MachinePostDominatorTree)
|
|
INITIALIZE_PASS_DEPENDENCY(MachineDominanceFrontier)
|
|
INITIALIZE_PASS_END(MachineRegionInfoPass, DEBUG_TYPE,
|
|
"Detect single entry single exit regions", true, true)
|
|
|
|
// Create methods available outside of this file, to use them
|
|
// "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by
|
|
// the link time optimization.
|
|
|
|
namespace llvm {
|
|
|
|
FunctionPass *createMachineRegionInfoPass() {
|
|
return new MachineRegionInfoPass();
|
|
}
|
|
|
|
} // end namespace llvm
|