From cfb18b75e8a353bc7486f337541476a36994b063 Mon Sep 17 00:00:00 2001
From: juanrod2 <>
Date: Tue, 22 Dec 2020 08:33:08 +0800
Subject: [PATCH 3/7] Memory leak fix for Managed Static Mutex

Upstream-Status: Backport [Taken from opencl-clang patches; https://github.com/intel/opencl-clang/blob/ocl-open-100/patches/llvm/0001-Memory-leak-fix-for-Managed-Static-Mutex.patch]

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>

Cleaning a mutex inside ManagedStatic llvm class.
---
 llvm/lib/Support/ManagedStatic.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Support/ManagedStatic.cpp b/llvm/lib/Support/ManagedStatic.cpp
index 053493f72fb5..6571580ccecf 100644
--- a/llvm/lib/Support/ManagedStatic.cpp
+++ b/llvm/lib/Support/ManagedStatic.cpp
@@ -76,8 +76,12 @@ void ManagedStaticBase::destroy() const {
 
 /// llvm_shutdown - Deallocate and destroy all ManagedStatic variables.
 void llvm::llvm_shutdown() {
-  std::lock_guard<std::recursive_mutex> Lock(*getManagedStaticMutex());
+  getManagedStaticMutex()->lock();
 
   while (StaticList)
     StaticList->destroy();
+
+  getManagedStaticMutex()->unlock();
+  delete ManagedStaticMutex;
+  ManagedStaticMutex = nullptr;
 }
-- 
2.17.1