X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FMemDepPrinter.cpp;h=da3b829b6d31fd8b4c355f0b9944f0b86da05ef8;hb=d7b5144d5341b160ce71f94a0869243a62ca98a0;hp=bc1dc69137d25a884b740508dc98171f843075bf;hpb=c37e6c073436be77e90ef640c0e6627200ba19f7;p=oota-llvm.git

diff --git a/lib/Analysis/MemDepPrinter.cpp b/lib/Analysis/MemDepPrinter.cpp
index bc1dc69137d..da3b829b6d3 100644
--- a/lib/Analysis/MemDepPrinter.cpp
+++ b/lib/Analysis/MemDepPrinter.cpp
@@ -46,7 +46,7 @@ namespace {
 
     bool runOnFunction(Function &F) override;
 
-    void print(raw_ostream &OS, const Module * = 0) const override;
+    void print(raw_ostream &OS, const Module * = nullptr) const override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.addRequiredTransitive<AliasAnalysis>();
@@ -56,7 +56,7 @@ namespace {
 
     void releaseMemory() override {
       Deps.clear();
-      F = 0;
+      F = nullptr;
     }
 
   private:
@@ -92,13 +92,12 @@ const char *const MemDepPrinter::DepTypeStr[]
 
 bool MemDepPrinter::runOnFunction(Function &F) {
   this->F = &F;
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
   MemoryDependenceAnalysis &MDA = getAnalysis<MemoryDependenceAnalysis>();
 
   // All this code uses non-const interfaces because MemDep is not
   // const-friendly, though nothing is actually modified.
-  for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
-    Instruction *Inst = &*I;
+  for (auto &I : inst_range(F)) {
+    Instruction *Inst = &I;
 
     if (!Inst->mayReadFromMemory() && !Inst->mayWriteToMemory())
       continue;
@@ -106,8 +105,8 @@ bool MemDepPrinter::runOnFunction(Function &F) {
     MemDepResult Res = MDA.getDependency(Inst);
     if (!Res.isNonLocal()) {
       Deps[Inst].insert(std::make_pair(getInstTypePair(Res),
-                                       static_cast<BasicBlock *>(0)));
-    } else if (CallSite CS = cast<Value>(Inst)) {
+                                       static_cast<BasicBlock *>(nullptr)));
+    } else if (auto CS = CallSite(Inst)) {
       const MemoryDependenceAnalysis::NonLocalDepInfo &NLDI =
         MDA.getNonLocalCallDependency(CS);
 
@@ -119,30 +118,9 @@ bool MemDepPrinter::runOnFunction(Function &F) {
       }
     } else {
       SmallVector<NonLocalDepResult, 4> NLDI;
-      if (LoadInst *LI = dyn_cast<LoadInst>(Inst)) {
-        if (!LI->isUnordered()) {
-          // FIXME: Handle atomic/volatile loads.
-          Deps[Inst].insert(std::make_pair(getInstTypePair(0, Unknown),
-                                           static_cast<BasicBlock *>(0)));
-          continue;
-        }
-        AliasAnalysis::Location Loc = AA.getLocation(LI);
-        MDA.getNonLocalPointerDependency(Loc, true, LI->getParent(), NLDI);
-      } else if (StoreInst *SI = dyn_cast<StoreInst>(Inst)) {
-        if (!SI->isUnordered()) {
-          // FIXME: Handle atomic/volatile stores.
-          Deps[Inst].insert(std::make_pair(getInstTypePair(0, Unknown),
-                                           static_cast<BasicBlock *>(0)));
-          continue;
-        }
-        AliasAnalysis::Location Loc = AA.getLocation(SI);
-        MDA.getNonLocalPointerDependency(Loc, false, SI->getParent(), NLDI);
-      } else if (VAArgInst *VI = dyn_cast<VAArgInst>(Inst)) {
-        AliasAnalysis::Location Loc = AA.getLocation(VI);
-        MDA.getNonLocalPointerDependency(Loc, false, VI->getParent(), NLDI);
-      } else {
-        llvm_unreachable("Unknown memory instruction!");
-      }
+      assert( (isa<LoadInst>(Inst) || isa<StoreInst>(Inst) ||
+               isa<VAArgInst>(Inst)) && "Unknown memory instruction!"); 
+      MDA.getNonLocalPointerDependency(Inst, NLDI);
 
       DepSet &InstDeps = Deps[Inst];
       for (SmallVectorImpl<NonLocalDepResult>::const_iterator
@@ -157,8 +135,8 @@ bool MemDepPrinter::runOnFunction(Function &F) {
 }
 
 void MemDepPrinter::print(raw_ostream &OS, const Module *M) const {
-  for (const_inst_iterator I = inst_begin(*F), E = inst_end(*F); I != E; ++I) {
-    const Instruction *Inst = &*I;
+  for (const auto &I : inst_range(*F)) {
+    const Instruction *Inst = &I;
 
     DepSetMap::const_iterator DI = Deps.find(Inst);
     if (DI == Deps.end())
@@ -166,11 +144,10 @@ void MemDepPrinter::print(raw_ostream &OS, const Module *M) const {
 
     const DepSet &InstDeps = DI->second;
 
-    for (DepSet::const_iterator I = InstDeps.begin(), E = InstDeps.end();
-         I != E; ++I) {
-      const Instruction *DepInst = I->first.getPointer();
-      DepType type = I->first.getInt();
-      const BasicBlock *DepBB = I->second;
+    for (const auto &I : InstDeps) {
+      const Instruction *DepInst = I.first.getPointer();
+      DepType type = I.first.getInt();
+      const BasicBlock *DepBB = I.second;
 
       OS << "    ";
       OS << DepTypeStr[type];