gcc/testsuite/gcc.target/powerpc/pr69946.c

   1 /* { dg-do compile { target { powerpc*-*-* && lp64 } } } */
   2 /* { dg-skip-if "" { powerpc_elfv2 } } */
   3 /* { dg-options "-O2" } */
   4
   5 /* This used to generate a rotate:DI by 44, with mask 0xf00, which is
   6    implemented using a rlwinm instruction.  We used to write 44 for the
   7    shift count there; it should be 12.  */
   8
   9 struct A
  10 {
  11   int a : 4;
  12   int : 2;
  13   int b : 2;
  14   int : 2;
  15   int c : 2;
  16   int d : 1;
  17   int e;
  18 };
  19 struct B
  20 {
  21   int a : 4;
  22 } *a;
  23 void bar (struct A);
  24
  25 void
  26 foo (void)
  27 {
  28   struct B b = a[0];
  29   struct A c;
  30   c.a = b.a;
  31   c.b = 1;
  32   c.c = 1;
  33   c.d = 0;
  34   bar (c);
  35 }
  36
  37 /* { dg-final { scan-assembler-not {(?n)rlwinm.*,44,20,23} } } */