Index: llvm/lib/ExecutionEngine/JITLink/EHFrameSupport.cpp
===================================================================
--- llvm/lib/ExecutionEngine/JITLink/EHFrameSupport.cpp
+++ llvm/lib/ExecutionEngine/JITLink/EHFrameSupport.cpp
@@ -631,8 +631,8 @@
 
 // Determine whether we can register EH tables.
 #if (defined(__GNUC__) && !defined(__ARM_EABI__) && !defined(__ia64__) &&      \
-     !(defined(_AIX) && defined(__ibmxl__)) && !defined(__SEH__) &&            \
-     !defined(__USING_SJLJ_EXCEPTIONS__))
+     !(defined(_AIX) && defined(__ibmxl__)) && !defined(__MVS__) &&            \
+     !defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__))
 #define HAVE_EHTABLE_SUPPORT 1
 #else
 #define HAVE_EHTABLE_SUPPORT 0
Index: llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
===================================================================
--- llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
+++ llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
@@ -33,8 +33,8 @@
 
 // Determine whether we can register EH tables.
 #if (defined(__GNUC__) && !defined(__ARM_EABI__) && !defined(__ia64__) &&      \
-     !(defined(_AIX) && defined(__ibmxl__)) && !defined(__SEH__) &&            \
-     !defined(__USING_SJLJ_EXCEPTIONS__))
+     !(defined(_AIX) && defined(__ibmxl__)) && !defined(__MVS__) &&            \
+     !defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__))
 #define HAVE_EHTABLE_SUPPORT 1
 #else
 #define HAVE_EHTABLE_SUPPORT 0