diff --git a/include/llvm/Support/IRBuilder.h b/include/llvm/Support/IRBuilder.h
index a8663d2a399..33ceb69feb5 100644
--- a/include/llvm/Support/IRBuilder.h
+++ b/include/llvm/Support/IRBuilder.h
@@ -363,7 +363,7 @@ public:
       // Every index must be constant.
       InputIterator i;
       for (i = IdxBegin; i < IdxEnd; ++i) {
-        if (!dyn_cast<Constant>(*i))
+        if (!isa<Constant>(*i))
           break;
       }
       if (i == IdxEnd)
diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index ef29f701b52..39f4989b9b0 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -997,7 +997,7 @@ bool Andersens::AnalyzeUsesOfFunction(Value *V) {
   if (!isa<PointerType>(V->getType())) return true;
 
   for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E; ++UI)
-    if (dyn_cast<LoadInst>(*UI)) {
+    if (isa<LoadInst>(*UI)) {
       return false;
     } else if (StoreInst *SI = dyn_cast<StoreInst>(*UI)) {
       if (V == SI->getOperand(1)) {
@@ -1028,7 +1028,7 @@ bool Andersens::AnalyzeUsesOfFunction(Value *V) {
     } else if (ICmpInst *ICI = dyn_cast<ICmpInst>(*UI)) {
       if (!isa<ConstantPointerNull>(ICI->getOperand(1)))
         return true;  // Allow comparison against null.
-    } else if (dyn_cast<FreeInst>(*UI)) {
+    } else if (isa<FreeInst>(*UI)) {
       return false;
     } else {
       return true;