diff --git a/llvm/include/llvm/ExecutionEngine/SectionMemoryManager.h b/llvm/include/llvm/ExecutionEngine/SectionMemoryManager.h
--- a/llvm/include/llvm/ExecutionEngine/SectionMemoryManager.h
+++ b/llvm/include/llvm/ExecutionEngine/SectionMemoryManager.h
@@ -104,7 +104,7 @@
   /// Creates a SectionMemoryManager instance with \p MM as the associated
   /// memory mapper.  If \p MM is nullptr then a default memory mapper is used
   /// that directly calls into the operating system.
-  SectionMemoryManager(MemoryMapper *MM = nullptr);
+  SectionMemoryManager(std::shared_ptr<MemoryMapper> = nullptr);
   SectionMemoryManager(const SectionMemoryManager &) = delete;
   void operator=(const SectionMemoryManager &) = delete;
   ~SectionMemoryManager() override;
@@ -185,7 +185,7 @@
   MemoryGroup CodeMem;
   MemoryGroup RWDataMem;
   MemoryGroup RODataMem;
-  MemoryMapper &MMapper;
+  std::shared_ptr<MemoryMapper> MMapper;
 };
 
 } // end namespace llvm
diff --git a/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp b/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
--- a/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
+++ b/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
@@ -13,6 +13,7 @@
 
 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
 #include "llvm/Config/config.h"
+#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/Process.h"
 
@@ -101,7 +102,7 @@
   // FIXME: Initialize the Near member for each memory group to avoid
   // interleaving.
   std::error_code ec;
-  sys::MemoryBlock MB = MMapper.allocateMappedMemory(
+  sys::MemoryBlock MB = MMapper->allocateMappedMemory(
       Purpose, RequiredSize, &MemGroup.Near,
       sys::Memory::MF_READ | sys::Memory::MF_WRITE, ec);
   if (ec) {
@@ -204,7 +205,7 @@
 SectionMemoryManager::applyMemoryGroupPermissions(MemoryGroup &MemGroup,
                                                   unsigned Permissions) {
   for (sys::MemoryBlock &MB : MemGroup.PendingMem)
-    if (std::error_code EC = MMapper.protectMappedMemory(MB, Permissions))
+    if (std::error_code EC = MMapper->protectMappedMemory(MB, Permissions))
       return EC;
 
   MemGroup.PendingMem.clear();
@@ -234,7 +235,7 @@
 SectionMemoryManager::~SectionMemoryManager() {
   for (MemoryGroup *Group : {&CodeMem, &RWDataMem, &RODataMem}) {
     for (sys::MemoryBlock &Block : Group->AllocatedMem)
-      MMapper.releaseMappedMemory(Block);
+      MMapper->releaseMappedMemory(Block);
   }
 }
 
@@ -263,11 +264,9 @@
     return sys::Memory::releaseMappedMemory(M);
   }
 };
-
-DefaultMMapper DefaultMMapperInstance;
 } // namespace
 
-SectionMemoryManager::SectionMemoryManager(MemoryMapper *MM)
-    : MMapper(MM ? *MM : DefaultMMapperInstance) {}
+SectionMemoryManager::SectionMemoryManager(std::shared_ptr<MemoryMapper> MM)
+    : MMapper(MM ? MM : std::make_shared<DefaultMMapper>()) {}
 
 } // namespace llvm