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

llvm/lib/Transforms/Utils/LowerSwitch.cpp

@@ -30,7 +30,7 @@ namespace {
   /// modifies the CFG!
   class VISIBILITY_HIDDEN LowerSwitch : public FunctionPass {
   public:
-    static const int ID; // Pass identifcation, replacement for typeid
+    static const char ID; // Pass identifcation, replacement for typeid
     LowerSwitch() : FunctionPass((intptr_t) &ID) {} 
 
     virtual bool runOnFunction(Function &F);
@@ -78,7 +78,7 @@ namespace {
     }
   };
 
-  const int LowerSwitch::ID = 0;
+  const char LowerSwitch::ID = 0;
   RegisterPass<LowerSwitch>
   X("lowerswitch", "Lower SwitchInst's to branches");
 }