diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp
index 2b217e1..20489b4 100644
--- a/lib/Analysis/InstructionSimplify.cpp
+++ b/lib/Analysis/InstructionSimplify.cpp
@@ -734,8 +734,8 @@
 
   // (X / Y) * Y -> X if the division is exact.
   Value *X = 0, *Y = 0;
-  if ((match(Op0, m_Div(m_Value(X), m_Value(Y))) && Y == Op1) || // (X / Y) * Y
-      (match(Op1, m_Div(m_Value(X), m_Value(Y))) && Y == Op0)) { // Y * (X / Y)
+  if ((match(Op0, m_IDiv(m_Value(X), m_Value(Y))) && Y == Op1) || // (X / Y) * Y
+      (match(Op1, m_IDiv(m_Value(X), m_Value(Y))) && Y == Op0)) { // Y * (X / Y)
     BinaryOperator *Div = cast<BinaryOperator>(Y == Op1 ? Op0 : Op1);
     if (Div->isExact())
       return X;