diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -886,15 +886,14 @@
   case Intrinsic::powi:
     if (ConstantInt *Power = dyn_cast<ConstantInt>(II->getArgOperand(1))) {
       // 0 and 1 are handled in instsimplify
-
       // powi(x, -1) -> 1/x
       if (Power->isMinusOne())
-        return BinaryOperator::CreateFDiv(ConstantFP::get(CI.getType(), 1.0),
-                                          II->getArgOperand(0));
+        return BinaryOperator::CreateFDivFMF(ConstantFP::get(CI.getType(), 1.0),
+                                             II->getArgOperand(0), II);
       // powi(x, 2) -> x*x
       if (Power->equalsInt(2))
-        return BinaryOperator::CreateFMul(II->getArgOperand(0),
-                                          II->getArgOperand(0));
+        return BinaryOperator::CreateFMulFMF(II->getArgOperand(0),
+                                             II->getArgOperand(0), II);
     }
     break;
 
diff --git a/llvm/test/Transforms/InstCombine/intrinsics.ll b/llvm/test/Transforms/InstCombine/intrinsics.ll
--- a/llvm/test/Transforms/InstCombine/intrinsics.ll
+++ b/llvm/test/Transforms/InstCombine/intrinsics.ll
@@ -28,9 +28,9 @@
   store volatile double %D, double* %P
   ret void
 ; CHECK-LABEL: @powi(
-; CHECK: %A = fdiv double 1.0{{.*}}, %V
+; CHECK: %A = fdiv fast double 1.0{{.*}}, %V
 ; CHECK: store volatile double %A,
-; CHECK: %D = fmul double %V, %V
+; CHECK: %D = fmul fast double %V, %V
 ; CHECK: store volatile double %D
 }