[llvm] r321568 - StructurizeCFG: Use phi iterator range

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Fri Dec 29 11:25:57 2017
New Revision: 321568

URL: http://llvm.org/viewvc/llvm-project?rev=321568&view=rev
Log:
StructurizeCFG: Use phi iterator range

Modified:
    llvm/trunk/lib/Transforms/Scalar/StructurizeCFG.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/StructurizeCFG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/StructurizeCFG.cpp?rev=321568&r1=321567&r2=321568&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/StructurizeCFG.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/StructurizeCFG.cpp Fri Dec 29 11:25:57 2017
@@ -544,10 +544,7 @@ void StructurizeCFG::insertConditions(bo
 /// them in DeletedPhis
 void StructurizeCFG::delPhiValues(BasicBlock *From, BasicBlock *To) {
   PhiMap &Map = DeletedPhis[To];
-  for (Instruction &I : *To) {
-    if (!isa<PHINode>(I))
-      break;
-    PHINode &Phi = cast<PHINode>(I);
+  for (PHINode &Phi : To->phis()) {
     while (Phi.getBasicBlockIndex(From) != -1) {
       Value *Deleted = Phi.removeIncomingValue(From, false);
       Map[&Phi].push_back(std::make_pair(From, Deleted));
@@ -557,10 +554,7 @@ void StructurizeCFG::delPhiValues(BasicB
 
 /// \brief Add a dummy PHI value as soon as we knew the new predecessor
 void StructurizeCFG::addPhiValues(BasicBlock *From, BasicBlock *To) {
-  for (Instruction &I : *To) {
-    if (!isa<PHINode>(I))
-      break;
-    PHINode &Phi = cast<PHINode>(I);
+  for (PHINode &Phi : To->phis()) {
     Value *Undef = UndefValue::get(Phi.getType());
     Phi.addIncoming(Undef, From);
   }