Add a test for calling a Neon intrinsic macro with the wrong vector type.

This does not work so well with the -fno-lax-vector-conversions option for
testing the arm_neon.h header but that is a really useful test, so I split
this out to a separate Sema test to check for the warning.

llvm-svn: 120694

1 files changed, 13 insertions, 0 deletions

diff --git a/clang/test/Sema/arm-neon-types.c b/clang/test/Sema/arm-neon-types.c
new file mode 100644
index 00000000000..40513c4ff75
--- /dev/null
+++ b/clang/test/Sema/arm-neon-types.c
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -triple thumbv7-apple-darwin10 -target-cpu cortex-a8 -fsyntax-only -Wvector-conversions -verify %s
+
+#include <arm_neon.h>
+
+// Radar 8228022: Should not report incompatible vector types.
+int32x2_t test(int32x2_t x) {
+  return vshr_n_s32(x, 31);
+}
+
+// ...but should warn when the types really do not match.
+float32x2_t test2(uint32x2_t x) {
+  return vcvt_n_f32_s32(x, 0); // expected-warning {{incompatible vector types}}
+}