Add the clang library to the repo (with some of my changes, too).

1 files changed, 23 insertions, 0 deletions

diff --git a/clang/test/CodeGen/lifetime.c b/clang/test/CodeGen/lifetime.c
new file mode 100644
index 0000000..2203840
--- /dev/null
+++ b/clang/test/CodeGen/lifetime.c
@@ -0,0 +1,23 @@
+// RUN: %clang -S -emit-llvm -o - -O0 %s | FileCheck %s -check-prefix=O0
+// RUN: %clang -S -emit-llvm -o - -O1 %s | FileCheck %s -check-prefix=O1
+// RUN: %clang -S -emit-llvm -o - -O2 %s | FileCheck %s -check-prefix=O2
+// RUN: %clang -S -emit-llvm -o - -O3 %s | FileCheck %s -check-prefix=O3
+
+extern void use(char *a);
+
+__attribute__((always_inline)) void helper_no_markers() {
+  char a;
+  use(&a);
+}
+
+void lifetime_test() {
+// O0: lifetime_test
+// O1: lifetime_test
+// O2: lifetime_test
+// O3: lifetime_test
+// O0-NOT: @llvm.lifetime.start
+// O1: @llvm.lifetime.start
+// O2: @llvm.lifetime.start
+// O3: @llvm.lifetime.start
+  helper_no_markers();
+}