Reapply r110396, with fixes to appease the Linux buildbot gods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/Reg2Mem.cpp b/lib/Transforms/Scalar/Reg2Mem.cpp
index 13222ac..cf32930 100644
--- a/lib/Transforms/Scalar/Reg2Mem.cpp
+++ b/lib/Transforms/Scalar/Reg2Mem.cpp
@@ -36,7 +36,7 @@
 namespace {
   struct RegToMem : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
-    RegToMem() : FunctionPass(&ID) {}
+    RegToMem() : FunctionPass(ID) {}
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequiredID(BreakCriticalEdgesID);
@@ -124,7 +124,7 @@
 
 // createDemoteRegisterToMemory - Provide an entry point to create this pass.
 //
-const PassInfo *const llvm::DemoteRegisterToMemoryID = &X;
+char &llvm::DemoteRegisterToMemoryID = RegToMem::ID;
 FunctionPass *llvm::createDemoteRegisterToMemoryPass() {
   return new RegToMem();
 }