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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized -w" } */
   3 /* { dg-options "-O1 -fdump-tree-optimized -w -msse" { target { i?86-*-* x86_64-*-* } } } */
   4
   5 #define vector __attribute__((vector_size(16) ))
   6 struct VecClass
   7 {
   8   vector float v;
   9 };
  10
  11 vector float foo( vector float v )
  12 {
  13     vector float x = v;
  14     x = x + x;
  15     struct VecClass disappear = *(struct VecClass*)&x;
  16     return disappear.v;
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "disappear" 0 "optimized"} } */
  20 /* { dg-final { cleanup-tree-dump "optimized" } } */