contrib/llvm/lib/Transforms/IPO/SCCP.cpp

   1 #include "llvm/Transforms/IPO/SCCP.h"
   2 #include "llvm/Analysis/TargetLibraryInfo.h"
   3 #include "llvm/Transforms/IPO.h"
   4 #include "llvm/Transforms/Scalar/SCCP.h"
   5
   6 using namespace llvm;
   7
   8 PreservedAnalyses IPSCCPPass::run(Module &M, ModuleAnalysisManager &AM) {
   9   const DataLayout &DL = M.getDataLayout();
  10   auto &TLI = AM.getResult<TargetLibraryAnalysis>(M);
  11   if (!runIPSCCP(M, DL, &TLI))
  12     return PreservedAnalyses::all();
  13   return PreservedAnalyses::none();
  14 }
  15
  16 namespace {
  17
  18 //===--------------------------------------------------------------------===//
  19 //
  20 /// IPSCCP Class - This class implements interprocedural Sparse Conditional
  21 /// Constant Propagation.
  22 ///
  23 class IPSCCPLegacyPass : public ModulePass {
  24 public:
  25   static char ID;
  26
  27   IPSCCPLegacyPass() : ModulePass(ID) {
  28     initializeIPSCCPLegacyPassPass(*PassRegistry::getPassRegistry());
  29   }
  30
  31   bool runOnModule(Module &M) override {
  32     if (skipModule(M))
  33       return false;
  34     const DataLayout &DL = M.getDataLayout();
  35     const TargetLibraryInfo *TLI =
  36         &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
  37     return runIPSCCP(M, DL, TLI);
  38   }
  39
  40   void getAnalysisUsage(AnalysisUsage &AU) const override {
  41     AU.addRequired<TargetLibraryInfoWrapperPass>();
  42   }
  43 };
  44
  45 } // end anonymous namespace
  46
  47 char IPSCCPLegacyPass::ID = 0;
  48
  49 INITIALIZE_PASS_BEGIN(IPSCCPLegacyPass, "ipsccp",
  50                       "Interprocedural Sparse Conditional Constant Propagation",
  51                       false, false)
  52 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
  53 INITIALIZE_PASS_END(IPSCCPLegacyPass, "ipsccp",
  54                     "Interprocedural Sparse Conditional Constant Propagation",
  55                     false, false)
  56
  57 // createIPSCCPPass - This is the public interface to this file.
  58 ModulePass *llvm::createIPSCCPPass() { return new IPSCCPLegacyPass(); }