Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg")

instead, as an example of what this looks like.

llvm-svn: 110478

llvm/include/llvm/Transforms/Scalar.h

@@ -149,7 +149,6 @@ Pass *createLoopIndexSplitPass();
 //   ret i32 %Y
 //
 FunctionPass *createPromoteMemoryToRegisterPass();
-extern char &PromoteMemoryToRegisterID;
 
 //===----------------------------------------------------------------------===//
 //

llvm/lib/Transforms/Utils/LowerInvoke.cpp

@@ -85,7 +85,7 @@ namespace {
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       // This is a cluster of orthogonal Transforms
-      AU.addPreservedID(PromoteMemoryToRegisterID);
+      AU.addPreserved("mem2reg");
       AU.addPreservedID(LowerSwitchID);
     }
 

llvm/lib/Transforms/Utils/LowerSwitch.cpp

@@ -41,7 +41,7 @@ namespace {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       // This is a cluster of orthogonal Transforms
       AU.addPreserved<UnifyFunctionExitNodes>();
-      AU.addPreservedID(PromoteMemoryToRegisterID);
+      AU.addPreserved("mem2reg");
       AU.addPreservedID(LowerInvokePassID);
     }
 

llvm/lib/Transforms/Utils/Mem2Reg.cpp

@@ -81,8 +81,6 @@ bool PromotePass::runOnFunction(Function &F) {
   return Changed;
 }
 
-// Publically exposed interface to pass...
-char &llvm::PromoteMemoryToRegisterID = PromotePass::ID;
 // createPromoteMemoryToRegister - Provide an entry point to create this pass.
 //
 FunctionPass *llvm::createPromoteMemoryToRegisterPass() {

llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp

@@ -35,7 +35,7 @@ void UnifyFunctionExitNodes::getAnalysisUsage(AnalysisUsage &AU) const{
   // We preserve the non-critical-edgeness property
   AU.addPreservedID(BreakCriticalEdgesID);
   // This is a cluster of orthogonal Transforms
-  AU.addPreservedID(PromoteMemoryToRegisterID);
+  AU.addPreserved("mem2reg");
   AU.addPreservedID(LowerSwitchID);
 }