[C++11] Add range based accessors for the Use-Def chain of a Value.

[oota-llvm.git] / lib / Transforms / Utils / SimplifyInstructions.cpp

diff --git a/lib/Transforms/Utils/SimplifyInstructions.cpp b/lib/Transforms/Utils/SimplifyInstructions.cpp
index 56bc9dd30f0688e3f072c93d3100feb6f3c63c05..bbd65f17528baaeec3ec2497995f47a72ad9333c 100644 (file)
--- a/lib/Transforms/Utils/SimplifyInstructions.cpp
+++ b/lib/Transforms/Utils/SimplifyInstructions.cpp
@@ -38,17 +38,18 @@ namespace {
       initializeInstSimplifierPass(*PassRegistry::getPassRegistry());
     }
 
-    void getAnalysisUsage(AnalysisUsage &AU) const {
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       AU.addRequired<TargetLibraryInfo>();
     }
 
     /// runOnFunction - Remove instructions that simplify.
-    bool runOnFunction(Function &F) {
+    bool runOnFunction(Function &F) override {
       const DominatorTreeWrapperPass *DTWP =
           getAnalysisIfAvailable<DominatorTreeWrapperPass>();
       const DominatorTree *DT = DTWP ? &DTWP->getDomTree() : 0;
-      const DataLayout *TD = getAnalysisIfAvailable<DataLayout>();
+      DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>();
+      const DataLayout *DL = DLP ? &DLP->getDataLayout() : 0;
       const TargetLibraryInfo *TLI = &getAnalysis<TargetLibraryInfo>();
       SmallPtrSet<const Instruction*, 8> S1, S2, *ToSimplify = &S1, *Next = &S2;
       bool Changed = false;
@@ -65,11 +66,10 @@ namespace {
               continue;
             // Don't waste time simplifying unused instructions.
             if (!I->use_empty())
-              if (Value *V = SimplifyInstruction(I, TD, TLI, DT)) {
+              if (Value *V = SimplifyInstruction(I, DL, TLI, DT)) {
                 // Mark all uses for resimplification next time round the loop.
-                for (Value::use_iterator UI = I->use_begin(), UE = I->use_end();
-                     UI != UE; ++UI)
-                  Next->insert(cast<Instruction>(*UI));
+                for (User *U : I->users())
+                  Next->insert(cast<Instruction>(U));
                 I->replaceAllUsesWith(V);
                 ++NumSimplified;
                 Changed = true;