commit 60f5ad46c2147af79035a43e5745e46376124780
author Evan Cheng <evan.cheng@apple.com> Sat Jan 29 04:53:35 2011 +0000
committer Evan Cheng <evan.cheng@apple.com> Sat Jan 29 04:53:35 2011 +0000
tree 5a9228b26f5dc4b7cd6e04e055ad31486385d437
parent c3f507f98a0747bd256e1c13536060b6fc5c4b62

Add a test for TCE return duplication.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124527 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/TailRecursionElimination.cpp

diff --git a/lib/Transforms/Scalar/TailRecursionElimination.cpp b/lib/Transforms/Scalar/TailRecursionElimination.cpp
index 61f2308..50d4cc3 100644
--- a/lib/Transforms/Scalar/TailRecursionElimination.cpp
+++ b/lib/Transforms/Scalar/TailRecursionElimination.cpp
@@ -72,6 +72,7 @@
 using namespace llvm;
 
 STATISTIC(NumEliminated, "Number of tail calls removed");
+STATISTIC(NumRetDuped,   "Number of return duplicated");
 STATISTIC(NumAccumAdded, "Number of accumulators introduced");
 
 namespace {
@@ -606,6 +607,7 @@
       EliminateRecursiveTailCall(CI, FoldReturnIntoUncondBranch(Ret, BB, Pred),
                                  OldEntry, TailCallsAreMarkedTail, ArgumentPHIs,
                                  CannotTailCallElimCallsMarkedTail);
+      ++NumRetDuped;
       Change = true;
     }
   }