gcc/testsuite/gcc.target/i386/warn-vect-op-2.c

   1 /* { dg-do compile { target { ! { ia32 } } } }  */
   2 /* { dg-options "-mno-sse -Wvector-operation-performance" }  */
   3 #define vector(elcount, type)  \
   4 __attribute__((vector_size((elcount)*sizeof(type)))) type
   5
   6 int main (int argc, char *argv[])
   7 {
   8   vector (16, signed char) v0 = {argc, 1, 15, 38, 12, -1, argc, 2,
   9                                  argc, 1, 15, 38, 12, -1, argc, 2};
  10   vector (16, signed char) v1 = {-4, argc, 2, 11, 1, 17, -8, argc,
  11                                  argc, 1, 15, 38, 12, -1, argc, 2};
  12   vector (16, signed char) res[] =
  13   {
  14     v0 + v1,              /* { dg-warning "expanded in parallel" }  */
  15     v0 - v1,              /* { dg-warning "expanded in parallel" }  */
  16     v0 > v1,              /* { dg-warning "expanded piecewise" }  */
  17     v0 & v1,              /* { dg-warning "expanded in parallel" }  */
  18     __builtin_shuffle (v0, v1),        /* { dg-warning "expanded piecewise" }  */
  19     __builtin_shuffle (v0, v1, v1)     /* { dg-warning "expanded piecewise" }  */
  20   };
  21
  22   return res[argc][argc];
  23 }