gcc/testsuite/gcc.dg/tree-ssa/vector-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-w -O1 -fdump-tree-optimized" } */
   3
   4 #define vector __attribute((vector_size(16) ))
   5 vector float a;
   6
   7 float f(float b)
   8 {
   9   vector float c = {0, 0, 0, 0};
  10   vector float d = {0, 0, 0, 0};
  11   d += c;
  12   return ((float*)&c)[2];
  13 }
  14
  15 /* We should be able to optimize this to just "return 0.0;" */
  16 /* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 0 "optimized"} } */
  17 /* { dg-final { scan-tree-dump-times " 0\\\.0" 1 "optimized"} } */
  18
  19