1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGen/builtins-ms.c b/test/CodeGen/builtins-ms.c
new file mode 100644
index 0000000..0676e9d
--- /dev/null
+++ b/test/CodeGen/builtins-ms.c
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - -fms-extensions -triple i686-pc-win32 | FileCheck %s
+
+// CHECK-LABEL: define void @test_alloca
+void capture(void *);
+void test_alloca(int n) {
+  capture(_alloca(n));
+  // CHECK: %[[arg:.*]] = alloca i8, i32 %
+  // CHECK: call void @capture(i8* %[[arg]])
+}