[AArch64] Produce the right kind of va_arg for windows
On windows on arm64, the va_list is a plain pointer.
Differential Revision: https://reviews.llvm.org/D35008
llvm-svn: 307933
diff --git a/clang/test/CodeGen/aarch64-varargs-ms.c b/clang/test/CodeGen/aarch64-varargs-ms.c
new file mode 100644
index 0000000..f2ba933
--- /dev/null
+++ b/clang/test/CodeGen/aarch64-varargs-ms.c
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -triple arm64-windows-msvc -emit-llvm -o - %s | FileCheck --check-prefix=CHECK %s
+
+#include <stdarg.h>
+
+int simple_int(va_list ap) {
+// CHECK-LABEL: define i32 @simple_int
+ return va_arg(ap, int);
+// CHECK: [[ADDR:%[a-z_0-9]+]] = bitcast i8* %argp.cur to i32*
+// CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
+// CHECK: ret i32 [[RESULT]]
+}