Index: llvm-toolchain-7_7.0.1~+rc3/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
===================================================================
--- llvm-toolchain-7_7.0.1~+rc3.orig/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
+++ llvm-toolchain-7_7.0.1~+rc3/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
@@ -294,8 +294,8 @@ bool PerfJITEventListener::InitDebugging
   // search for location to dump data to
   if (const char *BaseDir = getenv("JITDUMPDIR"))
     Path.append(BaseDir);
-  else if (!sys::path::home_directory(Path))
-    Path = ".";
+  else
+    sys::path::system_temp_directory(/*ErasedOnReboot*/ true, Path);
 
   // create debug directory
   Path += "/.debug/jit/";