Fix the cleanup process of exception information in JIT. Now JIT

deregisters registered by it FDE structures allowing consecutive
JIT runs to succeed.  Patch by Yuri.  Fixes PR8285.

llvm-svn: 117004

1 files changed, 13 insertions, 3 deletions

diff --git a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
index be7f1f56a95..77082c4d041 100644
--- a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -47,12 +47,12 @@ ExecutionEngine *(*ExecutionEngine::JITCtor)(
   const SmallVectorImpl<std::string>& MAttrs) = 0;
 ExecutionEngine *(*ExecutionEngine::InterpCtor)(Module *M,
                                                 std::string *ErrorStr) = 0;
-ExecutionEngine::EERegisterFn ExecutionEngine::ExceptionTableRegister = 0;
-
 
 ExecutionEngine::ExecutionEngine(Module *M)
   : EEState(*this),
-    LazyFunctionCreator(0) {
+    LazyFunctionCreator(0),
+    ExceptionTableRegister(0), 
+    ExceptionTableDeregister(0) {
   CompilingLazily         = false;
   GVCompilationDisabled   = false;
   SymbolSearchingDisabled = false;
@@ -66,6 +66,16 @@ ExecutionEngine::~ExecutionEngine() {
     delete Modules[i];
 }
 
+void ExecutionEngine::DeregisterAllTables() {
+  if (ExceptionTableDeregister) {
+    std::vector<void*>::iterator it = AllExceptionTables.begin();
+    std::vector<void*>::iterator ite = AllExceptionTables.end();
+    for (; it != ite; ++it)
+      ExceptionTableDeregister(*it);
+    AllExceptionTables.clear();
+  }
+}
+
 namespace {
 // This class automatically deletes the memory block when the GlobalVariable is
 // destroyed.