gcc/testsuite/gcc.dg/tree-ssa/forwprop-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-esra -w" } */
   3
   4 #define vector __attribute__((vector_size(16) ))
   5 struct VecClass
   6 {
   7   vector float v;
   8 };
   9
  10 vector float foo( vector float v )
  11 {
  12     vector float x = v;
  13     x = x + x;
  14     struct VecClass y = *(struct VecClass*)&x;
  15     return y.v;
  16 }
  17
  18 /* We should be able to remove the intermediate struct and directly
  19    return x.  As we do not fold VIEW_CONVERT_EXPR<struct VecClass>(x).v
  20    that doesn't happen right now.  */
  21 /* { dg-final { scan-tree-dump-times "VIEW_CONVERT_EXPR" 1 "esra"} } */
  22 /* { dg-final { cleanup-tree-dump "esra" } } */