forked from OSchip/llvm-project
[PM] Port Interprocedural SCCP to the new pass manager.
llvm-svn: 268684
This commit is contained in:
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745f3cbcfc
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@ -146,7 +146,7 @@ void initializeGlobalDCELegacyPassPass(PassRegistry&);
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void initializeGlobalOptLegacyPassPass(PassRegistry&);
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void initializeGlobalsAAWrapperPassPass(PassRegistry&);
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void initializeIPCPPass(PassRegistry&);
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void initializeIPSCCPPass(PassRegistry&);
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void initializeIPSCCPLegacyPassPass(PassRegistry &);
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void initializeIVUsersPass(PassRegistry&);
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void initializeIfConverterPass(PassRegistry&);
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void initializeInductiveRangeCheckEliminationPass(PassRegistry&);
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@ -0,0 +1,34 @@
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//===- SCCP.h - Optimize Global Variables ----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This pass implements interprocedural sparse conditional constant
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// propagation and merging.
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//
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// Specifically, this:
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// * Assumes values are constant unless proven otherwise
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// * Assumes BasicBlocks are dead unless proven otherwise
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// * Proves values to be constant, and replaces them with constants
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// * Proves conditional branches to be unconditional
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_IPO_SCCP_H
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#define LLVM_TRANSFORMS_IPO_SCCP_H
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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/// Pass to perform interprocedural constant propagation.
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class IPSCCPPass : public PassInfoMixin<IPSCCPPass> {
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public:
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PreservedAnalyses run(Module &M, AnalysisManager<Module> &AM);
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};
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}
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#endif // LLVM_TRANSFORMS_IPO_SCCP_H
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@ -97,7 +97,7 @@ void LTOCodeGenerator::initializeLTOPasses() {
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PassRegistry &R = *PassRegistry::getPassRegistry();
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initializeInternalizeLegacyPassPass(R);
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initializeIPSCCPPass(R);
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initializeIPSCCPLegacyPassPass(R);
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initializeGlobalOptLegacyPassPass(R);
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initializeConstantMergeLegacyPassPass(R);
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initializeDAHPass(R);
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@ -54,6 +54,7 @@
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#include "llvm/Transforms/IPO/GlobalOpt.h"
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#include "llvm/Transforms/IPO/InferFunctionAttrs.h"
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#include "llvm/Transforms/IPO/Internalize.h"
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#include "llvm/Transforms/IPO/SCCP.h"
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#include "llvm/Transforms/IPO/StripDeadPrototypes.h"
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#include "llvm/Transforms/InstCombine/InstCombine.h"
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#include "llvm/Transforms/InstrProfiling.h"
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@ -44,6 +44,7 @@ MODULE_PASS("inferattrs", InferFunctionAttrsPass())
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MODULE_PASS("internalize", InternalizePass())
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MODULE_PASS("instrprof", InstrProfiling())
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MODULE_PASS("invalidate<all>", InvalidateAllAnalysesPass())
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MODULE_PASS("ipsccp", IPSCCPPass())
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MODULE_PASS("no-op-module", NoOpModulePass())
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MODULE_PASS("print", PrintModulePass(dbgs()))
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MODULE_PASS("print-callgraph", CallGraphPrinterPass(dbgs()))
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@ -17,15 +17,15 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Scalar.h"
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#include "llvm/Transforms/IPO/SCCP.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/ADT/PointerIntPair.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/Analysis/GlobalsModRef.h"
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#include "llvm/Analysis/ConstantFolding.h"
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#include "llvm/Analysis/GlobalsModRef.h"
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/IR/CallSite.h"
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#include "llvm/IR/Constants.h"
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@ -38,6 +38,7 @@
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/Scalar.h"
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#include "llvm/Transforms/Utils/Local.h"
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#include <algorithm>
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using namespace llvm;
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@ -1644,39 +1645,6 @@ bool SCCP::runOnFunction(Function &F) {
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return MadeChanges;
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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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struct IPSCCP : public ModulePass {
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.addRequired<TargetLibraryInfoWrapperPass>();
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}
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static char ID;
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IPSCCP() : ModulePass(ID) {
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initializeIPSCCPPass(*PassRegistry::getPassRegistry());
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}
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bool runOnModule(Module &M) override;
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};
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} // end anonymous namespace
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char IPSCCP::ID = 0;
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INITIALIZE_PASS_BEGIN(IPSCCP, "ipsccp",
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"Interprocedural Sparse Conditional Constant Propagation",
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false, false)
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INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
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INITIALIZE_PASS_END(IPSCCP, "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() {
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return new IPSCCP();
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}
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static bool AddressIsTaken(const GlobalValue *GV) {
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// Delete any dead constantexpr klingons.
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GV->removeDeadConstantUsers();
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@ -1704,13 +1672,8 @@ static bool AddressIsTaken(const GlobalValue *GV) {
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return false;
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}
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bool IPSCCP::runOnModule(Module &M) {
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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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const TargetLibraryInfo *TLI =
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&getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
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static bool runIPSCCP(Module &M, const DataLayout &DL,
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const TargetLibraryInfo *TLI) {
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SCCPSolver Solver(DL, TLI);
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// AddressTakenFunctions - This set keeps track of the address-taken functions
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@ -1955,3 +1918,51 @@ bool IPSCCP::runOnModule(Module &M) {
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return MadeChanges;
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}
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PreservedAnalyses IPSCCPPass::run(Module &M, AnalysisManager<Module> &AM) {
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const DataLayout &DL = M.getDataLayout();
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auto &TLI = AM.getResult<TargetLibraryAnalysis>(M);
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if (!runIPSCCP(M, DL, &TLI))
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return PreservedAnalyses::all();
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return PreservedAnalyses::none();
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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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struct IPSCCPLegacyPass : public ModulePass {
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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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const TargetLibraryInfo *TLI =
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&getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
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return runIPSCCP(M, DL, TLI);
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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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(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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@ -71,7 +71,7 @@ void llvm::initializeScalarOpts(PassRegistry &Registry) {
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initializeRegToMemPass(Registry);
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initializeRewriteStatepointsForGCPass(Registry);
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initializeSCCPPass(Registry);
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initializeIPSCCPPass(Registry);
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initializeIPSCCPLegacyPassPass(Registry);
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initializeSROALegacyPassPass(Registry);
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initializeSROA_DTPass(Registry);
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initializeSROA_SSAUpPass(Registry);
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@ -1,3 +1,4 @@
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; RUN: opt < %s -S -passes=ipsccp | FileCheck %s
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; RUN: opt < %s -S -ipsccp | FileCheck %s
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@_ZL6test1g = internal global i32 42, align 4
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