static void
kill_autoinc_value (rtx_insn *insn, struct value_data *vd)
{
subrtx_iterator::array_type array;
FOR_EACH_SUBRTX (iter, array, PATTERN (insn), NONCONST)
{
const_rtx x = *iter;
if (GET_RTX_CLASS (GET_CODE (x)) == RTX_AUTOINC)
{
x = XEXP (x, 0);
kill_value (x, vd);
set_value_regno (REGNO (x), GET_MODE (x), vd);
iter.skip_subrtxes ();
}
}
static int
kill_autoinc_value (rtx *px, void *data)
{
rtx x = *px;
struct value_data *const vd = (struct value_data *) data;
if (GET_RTX_CLASS (GET_CODE (x)) == RTX_AUTOINC)
{
x = XEXP (x, 0);
kill_value (x, vd);
set_value_regno (REGNO (x), GET_MODE (x), vd);
return -1;
}
return 0;
}
static bool
propagate_rtx_1 (rtx *px, rtx old_rtx, rtx new_rtx, int flags)
{
rtx x = *px, tem = NULL_RTX, op0, op1, op2;
enum rtx_code code = GET_CODE (x);
machine_mode mode = GET_MODE (x);
machine_mode op_mode;
bool can_appear = (flags & PR_CAN_APPEAR) != 0;
bool valid_ops = true;
if (!(flags & PR_HANDLE_MEM) && MEM_P (x) && !MEM_READONLY_P (x))
{
/* If unsafe, change MEMs to CLOBBERs or SCRATCHes (to preserve whether
they have side effects or not). */
*px = (side_effects_p (x)
? gen_rtx_CLOBBER (GET_MODE (x), const0_rtx)
: gen_rtx_SCRATCH (GET_MODE (x)));
return false;
}
/* If X is OLD_RTX, return NEW_RTX. But not if replacing only within an
address, and we are *not* inside one. */
if (x == old_rtx)
{
*px = new_rtx;
return can_appear;
}
/* If this is an expression, try recursive substitution. */
switch (GET_RTX_CLASS (code))
{
case RTX_UNARY:
op0 = XEXP (x, 0);
op_mode = GET_MODE (op0);
valid_ops &= propagate_rtx_1 (&op0, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0))
return true;
tem = simplify_gen_unary (code, mode, op0, op_mode);
break;
case RTX_BIN_ARITH:
case RTX_COMM_ARITH:
op0 = XEXP (x, 0);
op1 = XEXP (x, 1);
valid_ops &= propagate_rtx_1 (&op0, old_rtx, new_rtx, flags);
valid_ops &= propagate_rtx_1 (&op1, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0) && op1 == XEXP (x, 1))
return true;
tem = simplify_gen_binary (code, mode, op0, op1);
break;
case RTX_COMPARE:
case RTX_COMM_COMPARE:
op0 = XEXP (x, 0);
op1 = XEXP (x, 1);
op_mode = GET_MODE (op0) != VOIDmode ? GET_MODE (op0) : GET_MODE (op1);
valid_ops &= propagate_rtx_1 (&op0, old_rtx, new_rtx, flags);
valid_ops &= propagate_rtx_1 (&op1, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0) && op1 == XEXP (x, 1))
return true;
tem = simplify_gen_relational (code, mode, op_mode, op0, op1);
break;
case RTX_TERNARY:
case RTX_BITFIELD_OPS:
op0 = XEXP (x, 0);
op1 = XEXP (x, 1);
op2 = XEXP (x, 2);
op_mode = GET_MODE (op0);
valid_ops &= propagate_rtx_1 (&op0, old_rtx, new_rtx, flags);
valid_ops &= propagate_rtx_1 (&op1, old_rtx, new_rtx, flags);
valid_ops &= propagate_rtx_1 (&op2, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0) && op1 == XEXP (x, 1) && op2 == XEXP (x, 2))
return true;
if (op_mode == VOIDmode)
op_mode = GET_MODE (op0);
tem = simplify_gen_ternary (code, mode, op_mode, op0, op1, op2);
break;
case RTX_EXTRA:
/* The only case we try to handle is a SUBREG. */
if (code == SUBREG)
{
op0 = XEXP (x, 0);
valid_ops &= propagate_rtx_1 (&op0, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0))
return true;
tem = simplify_gen_subreg (mode, op0, GET_MODE (SUBREG_REG (x)),
SUBREG_BYTE (x));
}
break;
case RTX_OBJ:
if (code == MEM && x != new_rtx)
{
rtx new_op0;
op0 = XEXP (x, 0);
/* There are some addresses that we cannot work on. */
if (!can_simplify_addr (op0))
return true;
op0 = new_op0 = targetm.delegitimize_address (op0);
valid_ops &= propagate_rtx_1 (&new_op0, old_rtx, new_rtx,
flags | PR_CAN_APPEAR);
/* Dismiss transformation that we do not want to carry on. */
if (!valid_ops
|| new_op0 == op0
|| !(GET_MODE (new_op0) == GET_MODE (op0)
|| GET_MODE (new_op0) == VOIDmode))
return true;
canonicalize_address (new_op0);
/* Copy propagations are always ok. Otherwise check the costs. */
if (!(REG_P (old_rtx) && REG_P (new_rtx))
&& !should_replace_address (op0, new_op0, GET_MODE (x),
MEM_ADDR_SPACE (x),
flags & PR_OPTIMIZE_FOR_SPEED))
return true;
tem = replace_equiv_address_nv (x, new_op0);
}
else if (code == LO_SUM)
{
op0 = XEXP (x, 0);
op1 = XEXP (x, 1);
/* The only simplification we do attempts to remove references to op0
or make it constant -- in both cases, op0's invalidity will not
make the result invalid. */
propagate_rtx_1 (&op0, old_rtx, new_rtx, flags | PR_CAN_APPEAR);
valid_ops &= propagate_rtx_1 (&op1, old_rtx, new_rtx, flags);
if (op0 == XEXP (x, 0) && op1 == XEXP (x, 1))
return true;
/* (lo_sum (high x) x) -> x */
if (GET_CODE (op0) == HIGH && rtx_equal_p (XEXP (op0, 0), op1))
tem = op1;
else
tem = gen_rtx_LO_SUM (mode, op0, op1);
/* OP1 is likely not a legitimate address, otherwise there would have
been no LO_SUM. We want it to disappear if it is invalid, return
false in that case. */
return memory_address_p (mode, tem);
}
else if (code == REG)
{
if (rtx_equal_p (x, old_rtx))
{
*px = new_rtx;
return can_appear;
}
}
break;
default:
break;
}
/* No change, no trouble. */
if (tem == NULL_RTX)
return true;
*px = tem;
/* Allow replacements that simplify operations on a vector or complex
value to a component. The most prominent case is
(subreg ([vec_]concat ...)). */
if (REG_P (tem) && !HARD_REGISTER_P (tem)
&& (VECTOR_MODE_P (GET_MODE (new_rtx))
|| COMPLEX_MODE_P (GET_MODE (new_rtx)))
&& GET_MODE (tem) == GET_MODE_INNER (GET_MODE (new_rtx)))
return true;
/* The replacement we made so far is valid, if all of the recursive
replacements were valid, or we could simplify everything to
a constant. */
return valid_ops || can_appear || CONSTANT_P (tem);
}
static void
print_exp (pretty_printer *pp, const_rtx x, int verbose)
{
const char *st[4];
const char *fun;
rtx op[4];
int i;
fun = (char *) 0;
for (i = 0; i < 4; i++)
{
st[i] = (char *) 0;
op[i] = NULL_RTX;
}
switch (GET_CODE (x))
{
case PLUS:
op[0] = XEXP (x, 0);
if (CONST_INT_P (XEXP (x, 1))
&& INTVAL (XEXP (x, 1)) < 0)
{
st[1] = "-";
op[1] = GEN_INT (-INTVAL (XEXP (x, 1)));
}
else
{
st[1] = "+";
op[1] = XEXP (x, 1);
}
break;
case LO_SUM:
op[0] = XEXP (x, 0);
st[1] = "+low(";
op[1] = XEXP (x, 1);
st[2] = ")";
break;
case MINUS:
op[0] = XEXP (x, 0);
st[1] = "-";
op[1] = XEXP (x, 1);
break;
case COMPARE:
fun = "cmp";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case NEG:
st[0] = "-";
op[0] = XEXP (x, 0);
break;
case FMA:
st[0] = "{";
op[0] = XEXP (x, 0);
st[1] = "*";
op[1] = XEXP (x, 1);
st[2] = "+";
op[2] = XEXP (x, 2);
st[3] = "}";
break;
case MULT:
op[0] = XEXP (x, 0);
st[1] = "*";
op[1] = XEXP (x, 1);
break;
case DIV:
op[0] = XEXP (x, 0);
st[1] = "/";
op[1] = XEXP (x, 1);
break;
case UDIV:
fun = "udiv";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case MOD:
op[0] = XEXP (x, 0);
st[1] = "%";
op[1] = XEXP (x, 1);
break;
case UMOD:
fun = "umod";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case SMIN:
fun = "smin";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case SMAX:
fun = "smax";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case UMIN:
fun = "umin";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case UMAX:
fun = "umax";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
break;
case NOT:
st[0] = "!";
op[0] = XEXP (x, 0);
break;
case AND:
op[0] = XEXP (x, 0);
st[1] = "&";
op[1] = XEXP (x, 1);
break;
case IOR:
op[0] = XEXP (x, 0);
st[1] = "|";
op[1] = XEXP (x, 1);
break;
case XOR:
op[0] = XEXP (x, 0);
st[1] = "^";
op[1] = XEXP (x, 1);
break;
case ASHIFT:
op[0] = XEXP (x, 0);
st[1] = "<<";
op[1] = XEXP (x, 1);
break;
case LSHIFTRT:
op[0] = XEXP (x, 0);
st[1] = " 0>>";
op[1] = XEXP (x, 1);
break;
case ASHIFTRT:
op[0] = XEXP (x, 0);
st[1] = ">>";
op[1] = XEXP (x, 1);
break;
case ROTATE:
op[0] = XEXP (x, 0);
st[1] = "<-<";
op[1] = XEXP (x, 1);
break;
case ROTATERT:
op[0] = XEXP (x, 0);
st[1] = ">->";
op[1] = XEXP (x, 1);
break;
case NE:
op[0] = XEXP (x, 0);
st[1] = "!=";
op[1] = XEXP (x, 1);
break;
case EQ:
op[0] = XEXP (x, 0);
st[1] = "==";
op[1] = XEXP (x, 1);
break;
case GE:
op[0] = XEXP (x, 0);
st[1] = ">=";
op[1] = XEXP (x, 1);
break;
case GT:
op[0] = XEXP (x, 0);
st[1] = ">";
op[1] = XEXP (x, 1);
break;
case LE:
op[0] = XEXP (x, 0);
st[1] = "<=";
op[1] = XEXP (x, 1);
break;
case LT:
op[0] = XEXP (x, 0);
st[1] = "<";
op[1] = XEXP (x, 1);
break;
case SIGN_EXTRACT:
fun = (verbose) ? "sign_extract" : "sxt";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
op[2] = XEXP (x, 2);
break;
case ZERO_EXTRACT:
fun = (verbose) ? "zero_extract" : "zxt";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
op[2] = XEXP (x, 2);
break;
case SIGN_EXTEND:
fun = (verbose) ? "sign_extend" : "sxn";
op[0] = XEXP (x, 0);
break;
case ZERO_EXTEND:
fun = (verbose) ? "zero_extend" : "zxn";
op[0] = XEXP (x, 0);
break;
case FLOAT_EXTEND:
fun = (verbose) ? "float_extend" : "fxn";
op[0] = XEXP (x, 0);
break;
case TRUNCATE:
fun = (verbose) ? "trunc" : "trn";
op[0] = XEXP (x, 0);
break;
case FLOAT_TRUNCATE:
fun = (verbose) ? "float_trunc" : "ftr";
op[0] = XEXP (x, 0);
break;
case FLOAT:
fun = (verbose) ? "float" : "flt";
op[0] = XEXP (x, 0);
break;
case UNSIGNED_FLOAT:
fun = (verbose) ? "uns_float" : "ufl";
op[0] = XEXP (x, 0);
break;
case FIX:
fun = "fix";
op[0] = XEXP (x, 0);
break;
case UNSIGNED_FIX:
fun = (verbose) ? "uns_fix" : "ufx";
op[0] = XEXP (x, 0);
break;
case PRE_DEC:
st[0] = "--";
op[0] = XEXP (x, 0);
break;
case PRE_INC:
st[0] = "++";
op[0] = XEXP (x, 0);
break;
case POST_DEC:
op[0] = XEXP (x, 0);
st[1] = "--";
break;
case POST_INC:
op[0] = XEXP (x, 0);
st[1] = "++";
break;
case PRE_MODIFY:
st[0] = "pre ";
op[0] = XEXP (XEXP (x, 1), 0);
st[1] = "+=";
op[1] = XEXP (XEXP (x, 1), 1);
break;
case POST_MODIFY:
st[0] = "post ";
op[0] = XEXP (XEXP (x, 1), 0);
st[1] = "+=";
op[1] = XEXP (XEXP (x, 1), 1);
break;
case CALL:
st[0] = "call ";
op[0] = XEXP (x, 0);
if (verbose)
{
st[1] = " argc:";
op[1] = XEXP (x, 1);
}
break;
case IF_THEN_ELSE:
st[0] = "{(";
op[0] = XEXP (x, 0);
st[1] = ")?";
op[1] = XEXP (x, 1);
st[2] = ":";
op[2] = XEXP (x, 2);
st[3] = "}";
break;
case TRAP_IF:
fun = "trap_if";
op[0] = TRAP_CONDITION (x);
break;
case PREFETCH:
fun = "prefetch";
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
op[2] = XEXP (x, 2);
break;
case UNSPEC:
case UNSPEC_VOLATILE:
{
pp_string (pp, "unspec");
if (GET_CODE (x) == UNSPEC_VOLATILE)
pp_string (pp, "/v");
pp_left_bracket (pp);
for (i = 0; i < XVECLEN (x, 0); i++)
{
if (i != 0)
pp_comma (pp);
print_pattern (pp, XVECEXP (x, 0, i), verbose);
}
pp_string (pp, "] ");
pp_decimal_int (pp, XINT (x, 1));
}
break;
default:
{
/* Most unhandled codes can be printed as pseudo-functions. */
if (GET_RTX_CLASS (GET_CODE (x)) == RTX_UNARY)
{
fun = GET_RTX_NAME (GET_CODE (x));
op[0] = XEXP (x, 0);
}
else if (GET_RTX_CLASS (GET_CODE (x)) == RTX_COMPARE
|| GET_RTX_CLASS (GET_CODE (x)) == RTX_COMM_COMPARE
|| GET_RTX_CLASS (GET_CODE (x)) == RTX_BIN_ARITH
|| GET_RTX_CLASS (GET_CODE (x)) == RTX_COMM_ARITH)
{
fun = GET_RTX_NAME (GET_CODE (x));
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
}
else if (GET_RTX_CLASS (GET_CODE (x)) == RTX_TERNARY)
{
fun = GET_RTX_NAME (GET_CODE (x));
op[0] = XEXP (x, 0);
op[1] = XEXP (x, 1);
op[2] = XEXP (x, 2);
}
else
/* Give up, just print the RTX name. */
st[0] = GET_RTX_NAME (GET_CODE (x));
}
break;
}
/* Print this as a function? */
if (fun)
{
pp_string (pp, fun);
pp_left_paren (pp);
}
for (i = 0; i < 4; i++)
{
if (st[i])
pp_string (pp, st[i]);
if (op[i])
{
if (fun && i != 0)
pp_comma (pp);
print_value (pp, op[i], verbose);
}
}
if (fun)
pp_right_paren (pp);
} /* print_exp */