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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/IPO/SimplifyLibCalls.cpp

@@ -152,7 +152,7 @@ public:
 /// @brief A ModulePass for optimizing well-known function calls.
 class VISIBILITY_HIDDEN SimplifyLibCalls : public ModulePass {
 public:
-  static const int ID; // Pass identifcation, replacement for typeid
+  static const char ID; // Pass identifcation, replacement for typeid
   SimplifyLibCalls() : ModulePass((intptr_t)&ID) {}
 
   /// We need some target data for accurate signature details that are
@@ -376,7 +376,7 @@ private:
   TargetData *TD;        ///< Cached TargetData
 };
 
-const int SimplifyLibCalls::ID = 0;
+const char SimplifyLibCalls::ID = 0;
 // Register the pass
 RegisterPass<SimplifyLibCalls>
 X("simplify-libcalls", "Simplify well-known library calls");