20 lines · c
1// RUN: %clang_cc1 -triple x86_64-apple-macos10.7.0 -fsyntax-only -verify -Wconversion %s2 3typedef __attribute__((ext_vector_type(4))) char char4;4typedef __attribute__((ext_vector_type(4))) short short4;5typedef __attribute__((ext_vector_type(1))) float float1;6 7static void test(void) {8 char4 vc4;9 float f;10 // Not allowed. There's no splatting conversion between float and int vector,11 // and we don't want to bitcast f to vector-of-char (as would happen with the12 // old-style vector types).13 vc4 += f; // expected-error {{cannot convert between vector values of different size}}14 short4 vs4;15 long long ll;16 // This one is OK; we don't re-interpret ll as short4, rather we splat its17 // value, which should produce a warning about clamping.18 vs4 += ll; // expected-warning {{implicit conversion loses integer precision}}19}20