1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/tls-05.ll b/test/CodeGen/SystemZ/tls-05.ll
new file mode 100644
index 0000000..385208d
--- /dev/null
+++ b/test/CodeGen/SystemZ/tls-05.ll
@@ -0,0 +1,15 @@
+; Test general-dynamic TLS access optimizations.
+;
+; If we access the same TLS variable twice, there should only be
+; a single call to __tls_get_offset.
+;
+; RUN: llc < %s -mcpu=z10 -mtriple=s390x-linux-gnu -relocation-model=pic | grep "__tls_get_offset" | count 1
+
+@x = thread_local global i32 0
+
+define i32 @foo() {
+  %val = load i32* @x
+  %inc = add nsw i32 %val, 1
+  store i32 %inc, i32* @x
+  ret i32 %val
+}