[PM] Split the LoopInfo object apart from the legacy pass, creating

a LoopInfoWrapperPass to wire the object up to the legacy pass manager.

This switches all the clients of LoopInfo over and paves the way to port
LoopInfo to the new pass manager. No functionality change is intended
with this iteration.

llvm-svn: 226373

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Transforms/Utils/LCSSA.cpp b/llvm/lib/Transforms/Utils/LCSSA.cpp
index 3f9b702..1cba367 100644
--- a/llvm/lib/Transforms/Utils/LCSSA.cpp
+++ b/llvm/lib/Transforms/Utils/LCSSA.cpp
@@ -294,7 +294,7 @@ struct LCSSA : public FunctionPass {
     AU.setPreservesCFG();
 
     AU.addRequired<DominatorTreeWrapperPass>();
-    AU.addRequired<LoopInfo>();
+    AU.addRequired<LoopInfoWrapperPass>();
     AU.addPreservedID(LoopSimplifyID);
     AU.addPreserved<AliasAnalysis>();
     AU.addPreserved<ScalarEvolution>();
@@ -308,7 +308,7 @@ private:
 char LCSSA::ID = 0;
 INITIALIZE_PASS_BEGIN(LCSSA, "lcssa", "Loop-Closed SSA Form Pass", false, false)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(LoopInfo)
+INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_END(LCSSA, "lcssa", "Loop-Closed SSA Form Pass", false, false)
 
 Pass *llvm::createLCSSAPass() { return new LCSSA(); }
@@ -318,7 +318,7 @@ char &llvm::LCSSAID = LCSSA::ID;
 /// Process all loops in the function, inner-most out.
 bool LCSSA::runOnFunction(Function &F) {
   bool Changed = false;
-  LI = &getAnalysis<LoopInfo>();
+  LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   SE = getAnalysisIfAvailable<ScalarEvolution>();