1 files changed, 13 insertions, 0 deletions
diff --git a/clang/test/CodeGen/struct-matching-constraint.c b/clang/test/CodeGen/struct-matching-constraint.c
new file mode 100644
index 0000000..40c444f
--- /dev/null
+++ b/clang/test/CodeGen/struct-matching-constraint.c
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -S -emit-llvm -triple armv7a-apple-darwin %s -o /dev/null
+typedef unsigned short uint16_t;
+typedef __attribute__((neon_vector_type(8))) uint16_t uint16x8_t;
+
+void b(uint16x8_t sat, uint16x8_t luma)
+{
+  __asm__("vmov.16 %1, %0   \n\t"
+                                           "vtrn.16 %0, %1   \n\t"
+   :"=w"(luma), "=w"(sat)
+   :"0"(luma)
+   );
+
+}