[Bug target/24265] [4.1 Regression] ICE: in extract_insn, at recog.c:2084 with -O -fgcse -fmove-loop-invariants -mtune=pentiumpro

[uros at kss-loka dot si]

------- Comment #9 from uros at kss-loka dot si  2005-11-08 13:23 -------
Bah... set_unique_reg_note is needed:

  /* If new move insn is invalid (i.e. move of const_double to
     387 stack register), force constant into memory.  */
  if (recog_memoized (inv->insn) == -1)
    {
      rtx src = SET_SRC (set);

      if (GET_CODE (src) == CONST_DOUBLE)
        {
          SET_SRC (set) = validize_mem (force_const_mem (mode, src));
          set_unique_reg_note (inv->insn, REG_EQUAL, src);
        }
    }

to produce:

        movl $1, %ebx
.L2:
        movl $-1717986918, 8(%esp)
        movl $1070176665, 12(%esp)
        fldl -16(%ebp)
        fstpl   (%esp)
        call dset
        addl $1, %ebx
        cmpl $4, %ebx
        jne  .L2



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24265