diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index c50b5a40e95..330a7bc53f8 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1693,6 +1693,8 @@ void CWriter::lowerIntrinsics(Function &F) {
           case Intrinsic::longjmp:
           case Intrinsic::prefetch:
           case Intrinsic::dbg_stoppoint:
+          case Intrinsic::powi_f32:
+          case Intrinsic::powi_f64:
             // We directly implement these intrinsics
             break;
           default:
@@ -1785,6 +1787,14 @@ void CWriter::visitCallInst(CallInst &I) {
         writeOperand(I.getOperand(1));
         Out << ')';
         return;
+      case Intrinsic::powi_f32:
+      case Intrinsic::powi_f64:
+        Out << "__builtin_powi(";
+        writeOperand(I.getOperand(1));
+        Out << ", ";
+        writeOperand(I.getOperand(2));
+        Out << ')';
+        return;
       case Intrinsic::setjmp:
 #if defined(HAVE__SETJMP) && defined(HAVE__LONGJMP)
         Out << "_";  // Use _setjmp on systems that support it!
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index c50b5a40e95..330a7bc53f8 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -1693,6 +1693,8 @@ void CWriter::lowerIntrinsics(Function &F) {
           case Intrinsic::longjmp:
           case Intrinsic::prefetch:
           case Intrinsic::dbg_stoppoint:
+          case Intrinsic::powi_f32:
+          case Intrinsic::powi_f64:
             // We directly implement these intrinsics
             break;
           default:
@@ -1785,6 +1787,14 @@ void CWriter::visitCallInst(CallInst &I) {
         writeOperand(I.getOperand(1));
         Out << ')';
         return;
+      case Intrinsic::powi_f32:
+      case Intrinsic::powi_f64:
+        Out << "__builtin_powi(";
+        writeOperand(I.getOperand(1));
+        Out << ", ";
+        writeOperand(I.getOperand(2));
+        Out << ')';
+        return;
       case Intrinsic::setjmp:
 #if defined(HAVE__SETJMP) && defined(HAVE__LONGJMP)
         Out << "_";  // Use _setjmp on systems that support it!