PEI: refactor replaceFrameIndices(MF) to call replaceFrameIndices(BB).

[oota-llvm.git] / unittests / ADT / ilistTest.cpp

diff --git a/unittests/ADT/ilistTest.cpp b/unittests/ADT/ilistTest.cpp
index 711192ed89e7d7790398c29bc1864c9b6003479e..0c0cd0fd56fe3cca2bf3f9fe88310227f683a717 100644 (file)
--- a/unittests/ADT/ilistTest.cpp
+++ b/unittests/ADT/ilistTest.cpp
@@ -8,8 +8,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/ilist.h"
-#include "llvm/ADT/ilist_node.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/ilist_node.h"
 #include "gtest/gtest.h"
 #include <ostream>
 
@@ -22,6 +22,7 @@ struct Node : ilist_node<Node> {
 
   Node() {}
   Node(int _Value) : Value(_Value) {}
+  ~Node() { Value = -1; }
 };
 
 TEST(ilistTest, Basic) {
@@ -62,4 +63,36 @@ TEST(ilistTest, SpliceOne) {
   EXPECT_EQ(3, List.back().Value);
 }
 
+TEST(ilistTest, UnsafeClear) {
+  ilist<Node> List;
+
+  // Before even allocating a sentinel.
+  List.clearAndLeakNodesUnsafely();
+  EXPECT_EQ(0u, List.size());
+
+  // Empty list with sentinel.
+  ilist<Node>::iterator E = List.end();
+  List.clearAndLeakNodesUnsafely();
+  EXPECT_EQ(0u, List.size());
+  // The sentinel shouldn't change.
+  EXPECT_TRUE(E == List.end());
+
+  // List with contents.
+  List.push_back(1);
+  ASSERT_EQ(1u, List.size());
+  Node *N = List.begin();
+  EXPECT_EQ(1, N->Value);
+  List.clearAndLeakNodesUnsafely();
+  EXPECT_EQ(0u, List.size());
+  ASSERT_EQ(1, N->Value);
+  delete N;
+
+  // List is still functional.
+  List.push_back(5);
+  List.push_back(6);
+  ASSERT_EQ(2u, List.size());
+  EXPECT_EQ(5, List.front().Value);
+  EXPECT_EQ(6, List.back().Value);
+}
+
 }