Force postdom to be linked into opt and bugpoint, even though it is no longer used by any passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51686 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/PostDominators.h

@@ -62,6 +62,7 @@ struct PostDominatorTree : public FunctionPass {
   }
 };
 
+FunctionPass* createPostDomTree();
 
 /// PostDominanceFrontier Class - Concrete subclass of DominanceFrontier that is
 /// used to compute the a post-dominance frontier.
@@ -90,6 +91,8 @@ private:
                               const DomTreeNode *Node);
 };
 
+FunctionPass* createPostDomFrontier();
+
 } // End llvm namespace
 
 #endif

include/llvm/LinkAllPasses.h

@@ -116,6 +116,8 @@ namespace {
       (void) llvm::createGVNPass();
       (void) llvm::createMemCpyOptPass();
       (void) llvm::createLoopDeletionPass();
+      (void) llvm::createPostDomTree();
+      (void) llvm::createPostDomFrontier();
 
       (void)new llvm::IntervalPartition();
       (void)new llvm::FindUsedTypes();

lib/Analysis/PostDominators.cpp

@@ -42,6 +42,10 @@ PostDominatorTree::~PostDominatorTree()
   delete DT;
 }
 
+FunctionPass* llvm::createPostDomTree() {
+  return new PostDominatorTree();
+}
+
 //===----------------------------------------------------------------------===//
 //  PostDominanceFrontier Implementation
 //===----------------------------------------------------------------------===//
@@ -84,3 +88,7 @@ PostDominanceFrontier::calculate(const PostDominatorTree &DT,
 
   return S;
 }
+
+FunctionPass* llvm::createPostDomFrontier() {
+  return new PostDominanceFrontier();
+}