diff --git a/compiler-rt/test/msan/noundef_analysis.cpp b/compiler-rt/test/msan/noundef_analysis.cpp
--- a/compiler-rt/test/msan/noundef_analysis.cpp
+++ b/compiler-rt/test/msan/noundef_analysis.cpp
@@ -1,29 +1,22 @@
-// RUN: %clangxx_msan %s -fsanitize=memory -o %t && %run %t >%t.out 2>&1
-// RUN: FileCheck %s --check-prefix=UNDEFINED --allow-empty < %t.out
-// RUN: %clangxx_msan %s -fsanitize=memory -Xclang -enable-noundef-analysis -mllvm -msan-eager-checks=1 -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan %s -o %t && %run %t >%t.out 2>&1
+// RUN: FileCheck %s --check-prefix=MISSED --allow-empty < %t.out
+// RUN: %clangxx_msan %s -Xclang -enable-noundef-analysis -mllvm -msan-eager-checks=1 -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-#include <sanitizer/msan_interface.h>
-
-namespace {
-
 struct SimpleStruct {
   int md1;
 };
 
-static volatile int sink;
-
-static void __attribute__((noinline)) examineValue(int x) { sink = x; }
+static int sink;
 
-} // namespace
+static void examineValue(int x) { sink = x; }
 
 int main(int argc, char *argv[]) {
   auto ss = new SimpleStruct;
-  __msan_allocated_memory(ss, sizeof(SimpleStruct));
   examineValue(ss->md1);
 
   return 0;
 }
 
 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
-// UNDEFINED-NOT: use-of-uninitialized-value
+// MISSED-NOT: use-of-uninitialized-value