1 files changed, 0 insertions, 188 deletions
diff --git a/lib/Analysis/ProfileDataLoaderPass.cpp b/lib/Analysis/ProfileDataLoaderPass.cpp
deleted file mode 100644
index 2ee0093a8f..0000000000
--- a/lib/Analysis/ProfileDataLoaderPass.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-//===- ProfileDataLoaderPass.cpp - Set branch weight metadata from prof ---===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass loads profiling data from a dump file and sets branch weight
-// metadata.
-//
-// TODO: Replace all "profile-metadata-loader" strings with "profile-loader"
-// once ProfileInfo etc. has been removed.
-//
-//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "profile-metadata-loader"
-#include "llvm/Analysis/Passes.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Analysis/ProfileDataLoader.h"
-#include "llvm/IR/BasicBlock.h"
-#include "llvm/IR/InstrTypes.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/MDBuilder.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/CFG.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-STATISTIC(NumEdgesRead, "The # of edges read.");
-STATISTIC(NumTermsAnnotated, "The # of terminator instructions annotated.");
-
-static cl::opt<std::string>
-ProfileMetadataFilename("profile-file", cl::init("llvmprof.out"),
-                  cl::value_desc("filename"),
-                  cl::desc("Profile file loaded by -profile-metadata-loader"));
-
-namespace {
-  /// This pass loads profiling data from a dump file and sets branch weight
-  /// metadata.
-  class ProfileMetadataLoaderPass : public ModulePass {
-    std::string Filename;
-  public:
-    static char ID; // Class identification, replacement for typeinfo
-    explicit ProfileMetadataLoaderPass(const std::string &filename = "")
-        : ModulePass(ID), Filename(filename) {
-      initializeProfileMetadataLoaderPassPass(*PassRegistry::getPassRegistry());
-      if (filename.empty()) Filename = ProfileMetadataFilename;
-    }
-
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesAll();
-    }
-
-    virtual const char *getPassName() const {
-      return "Profile loader";
-    }
-
-    virtual void readEdge(unsigned, ProfileData&, ProfileData::Edge,
-                          ArrayRef<unsigned>);
-    virtual unsigned matchEdges(Module&, ProfileData&, ArrayRef<unsigned>);
-    virtual void setBranchWeightMetadata(Module&, ProfileData&);
-
-    virtual bool runOnModule(Module &M);
-  };
-}  // End of anonymous namespace
-
-char ProfileMetadataLoaderPass::ID = 0;
-INITIALIZE_PASS_BEGIN(ProfileMetadataLoaderPass, "profile-metadata-loader",
-              "Load profile information from llvmprof.out", false, true)
-INITIALIZE_PASS_END(ProfileMetadataLoaderPass, "profile-metadata-loader",
-              "Load profile information from llvmprof.out", false, true)
-
-char &llvm::ProfileMetadataLoaderPassID = ProfileMetadataLoaderPass::ID;
-
-/// createProfileMetadataLoaderPass - This function returns a Pass that loads
-/// the profiling information for the module from the specified filename,
-/// making it available to the optimizers.
-ModulePass *llvm::createProfileMetadataLoaderPass() { 
-    return new ProfileMetadataLoaderPass();
-}
-ModulePass *llvm::createProfileMetadataLoaderPass(const std::string &Filename) {
-  return new ProfileMetadataLoaderPass(Filename);
-}
-
-/// readEdge - Take the value from a profile counter and assign it to an edge.
-void ProfileMetadataLoaderPass::readEdge(unsigned ReadCount,
-                                         ProfileData &PB, ProfileData::Edge e,
-                                         ArrayRef<unsigned> Counters) {
-  if (ReadCount >= Counters.size()) return;
-
-  unsigned weight = Counters[ReadCount];
-  assert(weight != ProfileDataLoader::Uncounted);
-  PB.addEdgeWeight(e, weight);
-
-  DEBUG(dbgs() << "-- Read Edge Counter for " << e
-               << " (# "<< (ReadCount) << "): "
-               << PB.getEdgeWeight(e) << "\n");
-}
-
-/// matchEdges - Link every profile counter with an edge.
-unsigned ProfileMetadataLoaderPass::matchEdges(Module &M, ProfileData &PB,
-                                               ArrayRef<unsigned> Counters) {
-  if (Counters.size() == 0) return 0;
-
-  unsigned ReadCount = 0;
-
-  for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
-    if (F->isDeclaration()) continue;
-    DEBUG(dbgs() << "Loading edges in '" << F->getName() << "'\n");
-    readEdge(ReadCount++, PB, PB.getEdge(0, &F->getEntryBlock()), Counters);
-    for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
-      TerminatorInst *TI = BB->getTerminator();
-      for (unsigned s = 0, e = TI->getNumSuccessors(); s != e; ++s) {
-        readEdge(ReadCount++, PB, PB.getEdge(BB,TI->getSuccessor(s)),
-                 Counters);
-      }
-    }
-  }
-
-  return ReadCount;
-}
-
-/// setBranchWeightMetadata - Translate the counter values associated with each
-/// edge into branch weights for each conditional branch (a branch with 2 or
-/// more desinations).
-void ProfileMetadataLoaderPass::setBranchWeightMetadata(Module &M,
-                                                        ProfileData &PB) {
-  for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
-    if (F->isDeclaration()) continue;
-    DEBUG(dbgs() << "Setting branch metadata in '" << F->getName() << "'\n");
-
-    for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
-      TerminatorInst *TI = BB->getTerminator();
-      unsigned NumSuccessors = TI->getNumSuccessors();
-
-      // If there is only one successor then we can not set a branch
-      // probability as the target is certain.
-      if (NumSuccessors < 2) continue;
-
-      // Load the weights of all edges leading from this terminator.
-      DEBUG(dbgs() << "-- Terminator with " << NumSuccessors
-                   << " successors:\n");
-      SmallVector<uint32_t, 4> Weights(NumSuccessors);
-      for (unsigned s = 0 ; s < NumSuccessors ; ++s) {
-          ProfileData::Edge edge = PB.getEdge(BB, TI->getSuccessor(s));
-          Weights[s] = (uint32_t)PB.getEdgeWeight(edge);
-          DEBUG(dbgs() << "---- Edge '" << edge << "' has weight "
-                       << Weights[s] << "\n");
-      }
-
-      // Set branch weight metadata.  This will set branch probabilities of
-      // 100%/0% if that is true of the dynamic execution.
-      // BranchProbabilityInfo can account for this when it loads this metadata
-      // (it gives the unexectuted branch a weight of 1 for the purposes of
-      // probability calculations).
-      MDBuilder MDB(TI->getContext());
-      MDNode *Node = MDB.createBranchWeights(Weights);
-      TI->setMetadata(LLVMContext::MD_prof, Node);
-      NumTermsAnnotated++;
-    }
-  }
-}
-
-bool ProfileMetadataLoaderPass::runOnModule(Module &M) {
-  ProfileDataLoader PDL("profile-data-loader", Filename);
-  ProfileData PB;
-
-  ArrayRef<unsigned> Counters = PDL.getRawEdgeCounts();
-
-  unsigned ReadCount = matchEdges(M, PB, Counters);
-
-  if (ReadCount != Counters.size()) {
-    errs() << "WARNING: profile information is inconsistent with "
-           << "the current program!\n";
-  }
-  NumEdgesRead = ReadCount;
-
-  setBranchWeightMetadata(M, PB);
-
-  return ReadCount > 0;
-}