diff --git a/llvm/lib/Support/Threading.cpp b/llvm/lib/Support/Threading.cpp
index 9da357a7ebb9..b2931510c1ae 100644
--- a/llvm/lib/Support/Threading.cpp
+++ b/llvm/lib/Support/Threading.cpp
@@ -80,7 +80,7 @@ unsigned llvm::ThreadPoolStrategy::compute_thread_count() const {
 // keyword.
 #include "llvm/Support/thread.h"
 
-#if defined(__APPLE__)
+#if defined(__APPLE__) || 1
   // Darwin's default stack size for threads except the main one is only 512KB,
   // which is not enough for some/many normal LLVM compilations. This implements
   // the same interface as std::thread but requests the same stack size as the
