SCEV: Use I = vector<>.erase(I) to iterate and delete at the same time

llvm-svn: 208282

1 files changed, 3 insertions, 6 deletions

diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 148e58d548f..8f5a2a98cc1 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -7223,12 +7223,9 @@ static void findArrayDimensionsRec(ScalarEvolution &SE,
     Terms[I] = Q;
   }
 
-  // Remove all SCEVConstants.
-  for (unsigned I = 0; I < Terms.size();)
-    if (isa<SCEVConstant>(Terms[I]))
-      Terms.erase(Terms.begin() + I);
-    else
-      ++I;
+  for (auto I = Terms.begin(), E = Terms.end(); I != E; I++)
+    if (isa<SCEVConstant>(*I))
+      I = Terms.erase(I);
 
   if (Terms.size() > 0)
     findArrayDimensionsRec(SE, Terms, Sizes, Zero, One);