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
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
#include "llvm/Transforms/IPO/SCCP.h"
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#include "llvm/Analysis/AssumptionCache.h"
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#include "llvm/Analysis/PostDominators.h"
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/Scalar/SCCP.h"
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using namespace llvm;
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PreservedAnalyses IPSCCPPass::run(Module &M, ModuleAnalysisManager &AM) {
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const DataLayout &DL = M.getDataLayout();
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auto &FAM = AM.getResult<FunctionAnalysisManagerModuleProxy>(M).getManager();
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auto GetTLI = [&FAM](Function &F) -> const TargetLibraryInfo & {
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return FAM.getResult<TargetLibraryAnalysis>(F);
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};
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auto getAnalysis = [&FAM](Function &F) -> AnalysisResultsForFn {
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DominatorTree &DT = FAM.getResult<DominatorTreeAnalysis>(F);
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return {
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std::make_unique<PredicateInfo>(F, DT, FAM.getResult<AssumptionAnalysis>(F)),
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&DT, FAM.getCachedResult<PostDominatorTreeAnalysis>(F)};
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};
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if (!runIPSCCP(M, DL, GetTLI, getAnalysis))
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return PreservedAnalyses::all();
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PreservedAnalyses PA;
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PA.preserve<DominatorTreeAnalysis>();
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PA.preserve<PostDominatorTreeAnalysis>();
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PA.preserve<FunctionAnalysisManagerModuleProxy>();
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return PA;
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}
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namespace {
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//===--------------------------------------------------------------------===//
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//
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/// IPSCCP Class - This class implements interprocedural Sparse Conditional
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/// Constant Propagation.
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///
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class IPSCCPLegacyPass : public ModulePass {
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public:
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static char ID;
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IPSCCPLegacyPass() : ModulePass(ID) {
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initializeIPSCCPLegacyPassPass(*PassRegistry::getPassRegistry());
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}
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bool runOnModule(Module &M) override {
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if (skipModule(M))
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return false;
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const DataLayout &DL = M.getDataLayout();
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auto GetTLI = [this](Function &F) -> const TargetLibraryInfo & {
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return this->getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(F);
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};
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auto getAnalysis = [this](Function &F) -> AnalysisResultsForFn {
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DominatorTree &DT =
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this->getAnalysis<DominatorTreeWrapperPass>(F).getDomTree();
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return {
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std::make_unique<PredicateInfo>(
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F, DT,
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this->getAnalysis<AssumptionCacheTracker>().getAssumptionCache(
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F)),
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nullptr, // We cannot preserve the DT or PDT with the legacy pass
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nullptr}; // manager, so set them to nullptr.
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};
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return runIPSCCP(M, DL, GetTLI, getAnalysis);
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.addRequired<AssumptionCacheTracker>();
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AU.addRequired<DominatorTreeWrapperPass>();
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AU.addRequired<TargetLibraryInfoWrapperPass>();
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}
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};
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} // end anonymous namespace
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char IPSCCPLegacyPass::ID = 0;
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INITIALIZE_PASS_BEGIN(IPSCCPLegacyPass, "ipsccp",
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"Interprocedural Sparse Conditional Constant Propagation",
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false, false)
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INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
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INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
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INITIALIZE_PASS_END(IPSCCPLegacyPass, "ipsccp",
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"Interprocedural Sparse Conditional Constant Propagation",
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false, false)
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// createIPSCCPPass - This is the public interface to this file.
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ModulePass *llvm::createIPSCCPPass() { return new IPSCCPLegacyPass(); }
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