1 files changed, 16 insertions, 0 deletions
diff --git a/clang/test/CodeGen/ms-mm-align.c b/clang/test/CodeGen/ms-mm-align.c
new file mode 100644
index 00000000000..ae8e98086a7
--- /dev/null
+++ b/clang/test/CodeGen/ms-mm-align.c
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -ffreestanding -fms-extensions -fms-compatibility -fms-compatibility-version=17.00 \
+// RUN:         -triple i686--windows -emit-llvm %s -o - \
+// RUN:         | FileCheck %s -check-prefix CHECK
+
+// Intrin.h needs size_t, but -ffreestanding prevents us from getting it from
+// stddef.h.  Work around it with this typedef.
+typedef __SIZE_TYPE__ size_t;
+#include <Intrin.h>
+
+void capture_ptr(int* i);
+void test_mm_align16(int p) {
+  _MM_ALIGN16 int i;
+  capture_ptr(&i);
+}
+
+// CHECK: alloca i32, align 16