test/Sema/vector-cast.c

   1 // RUN: clang-cc -fsyntax-only %s -verify -Wvector-conversions
   2
   3 typedef long long t1 __attribute__ ((vector_size (8)));
   4 typedef char t2 __attribute__ ((vector_size (16)));
   5 typedef float t3 __attribute__ ((vector_size (16)));
   6
   7 void f()
   8 {
   9   t1 v1;
  10   t2 v2;
  11   t3 v3;
  12
  13   v2 = (t2)v1; // -expected-error {{invalid conversion between vector type \
  14 't2' and 't1' of different size}}
  15   v1 = (t1)v2; // -expected-error {{invalid conversion between vector type \
  16 't1' and 't2' of different size}}
  17   v3 = (t3)v2;
  18
  19   v1 = (t1)(char *)10; // -expected-error {{invalid conversion between vector \
  20 type 't1' and scalar type 'char *'}}
  21   v1 = (t1)(long long)10;
  22   v1 = (t1)(short)10; // -expected-error {{invalid conversion between vector \
  23 type 't1' and integer type 'int' of different size}}
  24
  25   long long r1 = (long long)v1;
  26   short r2 = (short)v1; // -expected-error {{invalid conversion between vector \
  27 type 't1' and integer type 'short' of different size}}
  28   char *r3 = (char *)v1; // -expected-error {{invalid conversion between vector\
  29  type 't1' and scalar type 'char *'}}
  30 }
  31
  32
  33 void f2(t2 X);
  34
  35 void f3(t3 Y) {
  36   f2(Y);  // expected-warning {{incompatible vector types passing 't3', expected 't2'}}
  37 }
  38