VStudio compiler errors and placing Function*->ExFunc map under ManagedStatic control.

This commit fixes two things.  One is a pair of VStudio compiler errors stemming from variables
which defined within the for loop statement and also within the body of the for loop.  I fixed these 
by renaming one of the two variables.  Additionally, I've made the Function*->ExFunc map in 
ExternalFunctions.cpp a ManagedStatic object, so that cleanup will be done on llvm_shutdown.  In repeated
uses of the interpreter, where the same Function* address may get used for completely differnet functions,
this was causing a crash.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40558 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 4 deletions

diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index 14dcdf9..55391df 100644
--- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -25,6 +25,7 @@
 #include "llvm/Support/Streams.h"
 #include "llvm/System/DynamicLibrary.h"
 #include "llvm/Target/TargetData.h"
+#include "llvm/Support/ManagedStatic.h"
 #include <csignal>
 #include <map>
 #include <cmath>
@@ -33,7 +34,7 @@ using std::vector;
 using namespace llvm;
 
 typedef GenericValue (*ExFunc)(FunctionType *, const vector<GenericValue> &);
-static std::map<const Function *, ExFunc> Functions;
+static ManagedStatic<std::map<const Function *, ExFunc> > Functions;
 static std::map<std::string, ExFunc> FuncNames;
 
 static Interpreter *TheInterpreter;
@@ -80,7 +81,7 @@ static ExFunc lookupFunction(const Function *F) {
     FnPtr = (ExFunc)(intptr_t)
       sys::DynamicLibrary::SearchForAddressOfSymbol(F->getName());
   if (FnPtr != 0)
-    Functions.insert(std::make_pair(F, FnPtr));  // Cache for later
+    Functions->insert(std::make_pair(F, FnPtr));  // Cache for later
   return FnPtr;
 }
 
@@ -90,8 +91,8 @@ GenericValue Interpreter::callExternalFunction(Function *F,
 
   // Do a lookup to see if the function is in our cache... this should just be a
   // deferred annotation!
-  std::map<const Function *, ExFunc>::iterator FI = Functions.find(F);
-  ExFunc Fn = (FI == Functions.end()) ? lookupFunction(F) : FI->second;
+  std::map<const Function *, ExFunc>::iterator FI = Functions->find(F);
+  ExFunc Fn = (FI == Functions->end()) ? lookupFunction(F) : FI->second;
   if (Fn == 0) {
     cerr << "Tried to execute an unknown external function: "
          << F->getType()->getDescription() << " " << F->getName() << "\n";