Tidy up several unbeseeming casts from pointer to intptr_t.

llvm-svn: 55779
diff --git a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
index ce38b08..46b2952 100644
--- a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
+++ b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
@@ -36,7 +36,7 @@
 namespace {
   struct VISIBILITY_HIDDEN RegToMem : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
-    RegToMem() : FunctionPass((intptr_t)&ID) {}
+    RegToMem() : FunctionPass(&ID) {}
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequiredID(BreakCriticalEdgesID);