[PM/AA] Hoist the value handle definition for CFLAA into the header to

[oota-llvm.git] / lib / Analysis / MemDerefPrinter.cpp

diff --git a/lib/Analysis/MemDerefPrinter.cpp b/lib/Analysis/MemDerefPrinter.cpp
index 64cec181a2f95a5c69595275d31d1885862d24ef..ef2de41e120921a5eeaf50681e659d3b0bbda8ff 100644 (file)
--- a/lib/Analysis/MemDerefPrinter.cpp
+++ b/lib/Analysis/MemDerefPrinter.cpp
@@ -10,9 +10,12 @@
 #include "llvm/Analysis/Passes.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
+#include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CallSite.h"
+#include "llvm/IR/DataLayout.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
@@ -21,10 +24,13 @@ namespace {
   struct MemDerefPrinter : public FunctionPass {
     SmallVector<Value *, 4> Vec;
 
-    static char ID; // Pass identifcation, replacement for typeid
+    static char ID; // Pass identification, replacement for typeid
     MemDerefPrinter() : FunctionPass(ID) {
       initializeMemDerefPrinterPass(*PassRegistry::getPassRegistry());
     }
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesAll();
+    }
     bool runOnFunction(Function &F) override;
     void print(raw_ostream &OS, const Module * = nullptr) const override;
     void releaseMemory() override {
@@ -34,18 +40,21 @@ namespace {
 }
 
 char MemDerefPrinter::ID = 0;
-INITIALIZE_PASS(MemDerefPrinter, "print-memderefs",
-                "Memory Dereferenciblity of pointers in function", false, true)
+INITIALIZE_PASS_BEGIN(MemDerefPrinter, "print-memderefs",
+                      "Memory Dereferenciblity of pointers in function", false, true)
+INITIALIZE_PASS_END(MemDerefPrinter, "print-memderefs",
+                    "Memory Dereferenciblity of pointers in function", false, true)
 
 FunctionPass *llvm::createMemDerefPrinter() {
   return new MemDerefPrinter();
 }
 
 bool MemDerefPrinter::runOnFunction(Function &F) {
-  for (auto &I: inst_range(F)) {
+  const DataLayout &DL = F.getParent()->getDataLayout();
+  for (auto &I: instructions(F)) {
     if (LoadInst *LI = dyn_cast<LoadInst>(&I)) {
       Value *PO = LI->getPointerOperand();
-      if (PO->isDereferenceablePointer(nullptr))
+      if (isDereferenceablePointer(PO, DL))
         Vec.push_back(PO);
     }
   }