[InstSimplify] add nuw %x, C2 must be at least C2

[oota-llvm.git] / unittests / Support / ManagedStatic.cpp

diff --git a/unittests/Support/ManagedStatic.cpp b/unittests/Support/ManagedStatic.cpp
index 79eb098e565e15b2ffec8d9dc412c6cb9b547525..153884ba42986a9d32e5d1bd241f176cad1d20b9 100644 (file)
--- a/unittests/Support/ManagedStatic.cpp
+++ b/unittests/Support/ManagedStatic.cpp
@@ -19,25 +19,41 @@ using namespace llvm;
 
 namespace {
 
-#ifdef HAVE_PTHREAD_H
+#if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \
+  !__has_feature(memory_sanitizer)
 namespace test1 {
   llvm::ManagedStatic<int> ms;
   void *helper(void*) {
     *ms;
-    return NULL;
+    return nullptr;
+  }
+
+  // Valgrind's leak checker complains glibc's stack allocation.
+  // To appease valgrind, we provide our own stack for each thread.
+  void *allocate_stack(pthread_attr_t &a, size_t n = 65536) {
+    void *stack = malloc(n);
+    pthread_attr_init(&a);
+#if defined(__linux__)
+    pthread_attr_setstack(&a, stack, n);
+#endif
+    return stack;
   }
 }
 
 TEST(Initialize, MultipleThreads) {
   // Run this test under tsan: http://code.google.com/p/data-race-test/
 
-  llvm_start_multithreaded();
+  pthread_attr_t a1, a2;
+  void *p1 = test1::allocate_stack(a1);
+  void *p2 = test1::allocate_stack(a2);
+
   pthread_t t1, t2;
-  pthread_create(&t1, NULL, test1::helper, NULL);
-  pthread_create(&t2, NULL, test1::helper, NULL);
-  pthread_join(t1, NULL);
-  pthread_join(t2, NULL);
-  llvm_stop_multithreaded();
+  pthread_create(&t1, &a1, test1::helper, nullptr);
+  pthread_create(&t2, &a2, test1::helper, nullptr);
+  pthread_join(t1, nullptr);
+  pthread_join(t2, nullptr);
+  free(p1);
+  free(p2);
 }
 #endif