[Bug target/108293] Incorrect assembly emitted for float for BPF target

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108293

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The bug is in bpf_print_operand:
    case CONST_DOUBLE:
      if (CONST_DOUBLE_HIGH (op))
        fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
                 CONST_DOUBLE_HIGH (op), CONST_DOUBLE_LOW (op));
      else if (CONST_DOUBLE_LOW (op) < 0)
        fprintf (file, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (op));
      else
        fprintf (file, HOST_WIDE_INT_PRINT_DEC, CONST_DOUBLE_LOW (op));
      break;
Obviously, the above handling is fine only for integral CONST_DOUBLEs, so for
floating point modes one needs to do something that other targets do, like:
  else if (CONST_DOUBLE_P (x) && GET_MODE (x) == SFmode)
    {
      long l;

      REAL_VALUE_TO_TARGET_SINGLE (*CONST_DOUBLE_REAL_VALUE (x), l);
      fprintf (file, "0x%08x", (unsigned int) l);
    }
for SFmode, or

  else if (CONST_DOUBLE_P (x) && GET_MODE (x) == DFmode)
    {
      long l[2];

      REAL_VALUE_TO_TARGET_DOUBLE (*CONST_DOUBLE_REAL_VALUE (x), l);
      fprintf (file, "0x%lx%08lx", l[1] & 0xffffffff, l[0] & 0xffffffff);
    }
for DFmode.