Use 'static const char' instead of 'static const int'.
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
diff --git a/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp b/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
index c75b930..056c2a1 100644
--- a/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
@@ -67,7 +67,7 @@
 
 namespace {
   struct VISIBILITY_HIDDEN TailCallElim : public FunctionPass {
-    static const int ID; // Pass identifcation, replacement for typeid
+    static const char ID; // Pass identifcation, replacement for typeid
     TailCallElim() : FunctionPass((intptr_t)&ID) {}
 
     virtual bool runOnFunction(Function &F);
@@ -80,7 +80,7 @@
     bool CanMoveAboveCall(Instruction *I, CallInst *CI);
     Value *CanTransformAccumulatorRecursion(Instruction *I, CallInst *CI);
   };
-  const int TailCallElim::ID = 0;
+  const char TailCallElim::ID = 0;
   RegisterPass<TailCallElim> X("tailcallelim", "Tail Call Elimination");
 }