diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index d84bb6472af..42c8c604e69 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -26,6 +26,8 @@
 
 using namespace llvm;
 
+#if 0
+
 // A utility function for allocating memory, checking for allocation failures,
 // and ensuring the contents are zeroed.
 inline static uint64_t* getClearedMemory(uint32_t numWords) {
@@ -1587,3 +1589,5 @@ void APInt::dump() const
   cerr << " (" << this->toString(10, false) << ")\n" << std::setbase(10);
 }
 #endif
+
+#endif