Add LCSSA as a requirement for LoopUnswitch, and assert that LoopUnswitch preserves

LCSSA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28739 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index c583eea14d62ea9598069afb96342cb58b351cba..ab736c1de8773b9b7c848d53c36427c7012d8e98 100644 (file)
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -73,6 +73,8 @@ namespace {
       AU.addPreservedID(LoopSimplifyID);
       AU.addRequired<LoopInfo>();
       AU.addPreserved<LoopInfo>();
+      AU.addRequiredID(LCSSAID);
+      AU.addPreservedID(LCSSAID);
     }
 
   private:
@@ -199,6 +201,8 @@ bool LoopUnswitch::visitLoop(Loop *L) {
       }
   }
     
+  assert(L->isLCSSAForm());
+  
   return Changed;
 }