#include "function.h"
#include "expr.h"
#include "toplev.h"
+#include "diagnostic-core.h"
#include "output.h"
#include "ggc.h"
#include "target.h"
rtx
delegitimize_mem_from_attrs (rtx x)
{
+ /* MEMs without MEM_OFFSETs may have been offset, so we can't just
+ use their base addresses as equivalent. */
if (MEM_P (x)
&& MEM_EXPR (x)
- && (!MEM_OFFSET (x)
- || GET_CODE (MEM_OFFSET (x)) == CONST_INT))
+ && MEM_OFFSET (x))
{
tree decl = MEM_EXPR (x);
enum machine_mode mode = GET_MODE (x);
{
rtx newx;
- if (MEM_OFFSET (x))
- offset += INTVAL (MEM_OFFSET (x));
+ offset += INTVAL (MEM_OFFSET (x));
newx = DECL_RTL (decl);
break;
case FFS:
- /* Don't use ffs here. Instead, get low order bit and then its
- number. If arg0 is zero, this will return 0, as desired. */
arg0 &= GET_MODE_MASK (mode);
- val = exact_log2 (arg0 & (- arg0)) + 1;
+ val = ffs_hwi (arg0);
break;
case CLZ:
val = GET_MODE_BITSIZE (mode);
}
else
- val = exact_log2 (arg0 & -arg0);
+ val = ctz_hwi (arg0);
break;
case POPCOUNT:
case FFS:
hv = 0;
- if (l1 == 0)
- {
- if (h1 == 0)
- lv = 0;
- else
- lv = HOST_BITS_PER_WIDE_INT + exact_log2 (h1 & -h1) + 1;
- }
+ if (l1 != 0)
+ lv = ffs_hwi (l1);
+ else if (h1 != 0)
+ lv = HOST_BITS_PER_WIDE_INT + ffs_hwi (h1);
else
- lv = exact_log2 (l1 & -l1) + 1;
+ lv = 0;
break;
case CLZ:
case CTZ:
hv = 0;
if (l1 != 0)
- lv = exact_log2 (l1 & -l1);
+ lv = ctz_hwi (l1);
else if (h1 != 0)
- lv = HOST_BITS_PER_WIDE_INT + exact_log2 (h1 & -h1);
+ lv = HOST_BITS_PER_WIDE_INT + ctz_hwi (h1);
else if (! CTZ_DEFINED_VALUE_AT_ZERO (mode, lv))
lv = GET_MODE_BITSIZE (mode);
break;
if (trueop1 == constm1_rtx)
return simplify_gen_unary (NEG, mode, op0, mode);
+ if (GET_CODE (op0) == NEG)
+ {
+ rtx temp = simplify_unary_operation (NEG, mode, op1, mode);
+ if (temp)
+ return simplify_gen_binary (MULT, mode, XEXP (op0, 0), temp);
+ }
+ if (GET_CODE (op1) == NEG)
+ {
+ rtx temp = simplify_unary_operation (NEG, mode, op0, mode);
+ if (temp)
+ return simplify_gen_binary (MULT, mode, temp, XEXP (op1, 0));
+ }
+
/* Maybe simplify x * 0 to 0. The reduction is not valid if
x is NaN, since x * 0 is then also NaN. Nor is it valid
when the mode has signed zeros, since multiplying a negative
/* We can fold some multi-word operations. */
if (GET_MODE_CLASS (mode) == MODE_INT
- && width == HOST_BITS_PER_WIDE_INT * 2
- && (GET_CODE (op0) == CONST_DOUBLE || CONST_INT_P (op0))
- && (GET_CODE (op1) == CONST_DOUBLE || CONST_INT_P (op1)))
+ && width == HOST_BITS_PER_DOUBLE_INT
+ && (CONST_DOUBLE_P (op0) || CONST_INT_P (op0))
+ && (CONST_DOUBLE_P (op1) || CONST_INT_P (op1)))
{
- unsigned HOST_WIDE_INT l1, l2, lv, lt;
- HOST_WIDE_INT h1, h2, hv, ht;
+ double_int o0, o1, res, tmp;
- if (GET_CODE (op0) == CONST_DOUBLE)
- l1 = CONST_DOUBLE_LOW (op0), h1 = CONST_DOUBLE_HIGH (op0);
- else
- l1 = INTVAL (op0), h1 = HWI_SIGN_EXTEND (l1);
-
- if (GET_CODE (op1) == CONST_DOUBLE)
- l2 = CONST_DOUBLE_LOW (op1), h2 = CONST_DOUBLE_HIGH (op1);
- else
- l2 = INTVAL (op1), h2 = HWI_SIGN_EXTEND (l2);
+ o0 = rtx_to_double_int (op0);
+ o1 = rtx_to_double_int (op1);
switch (code)
{
case MINUS:
/* A - B == A + (-B). */
- neg_double (l2, h2, &lv, &hv);
- l2 = lv, h2 = hv;
+ o1 = double_int_neg (o1);
/* Fall through.... */
case PLUS:
- add_double (l1, h1, l2, h2, &lv, &hv);
+ res = double_int_add (o0, o1);
break;
case MULT:
- mul_double (l1, h1, l2, h2, &lv, &hv);
+ res = double_int_mul (o0, o1);
break;
case DIV:
- if (div_and_round_double (TRUNC_DIV_EXPR, 0, l1, h1, l2, h2,
- &lv, &hv, <, &ht))
+ if (div_and_round_double (TRUNC_DIV_EXPR, 0,
+ o0.low, o0.high, o1.low, o1.high,
+ &res.low, &res.high,
+ &tmp.low, &tmp.high))
return 0;
break;
case MOD:
- if (div_and_round_double (TRUNC_DIV_EXPR, 0, l1, h1, l2, h2,
- <, &ht, &lv, &hv))
+ if (div_and_round_double (TRUNC_DIV_EXPR, 0,
+ o0.low, o0.high, o1.low, o1.high,
+ &tmp.low, &tmp.high,
+ &res.low, &res.high))
return 0;
break;
case UDIV:
- if (div_and_round_double (TRUNC_DIV_EXPR, 1, l1, h1, l2, h2,
- &lv, &hv, <, &ht))
+ if (div_and_round_double (TRUNC_DIV_EXPR, 1,
+ o0.low, o0.high, o1.low, o1.high,
+ &res.low, &res.high,
+ &tmp.low, &tmp.high))
return 0;
break;
case UMOD:
- if (div_and_round_double (TRUNC_DIV_EXPR, 1, l1, h1, l2, h2,
- <, &ht, &lv, &hv))
+ if (div_and_round_double (TRUNC_DIV_EXPR, 1,
+ o0.low, o0.high, o1.low, o1.high,
+ &tmp.low, &tmp.high,
+ &res.low, &res.high))
return 0;
break;
case AND:
- lv = l1 & l2, hv = h1 & h2;
+ res = double_int_and (o0, o1);
break;
case IOR:
- lv = l1 | l2, hv = h1 | h2;
+ res = double_int_ior (o0, o1);
break;
case XOR:
- lv = l1 ^ l2, hv = h1 ^ h2;
+ res = double_int_xor (o0, o1);
break;
case SMIN:
- if (h1 < h2
- || (h1 == h2
- && ((unsigned HOST_WIDE_INT) l1
- < (unsigned HOST_WIDE_INT) l2)))
- lv = l1, hv = h1;
- else
- lv = l2, hv = h2;
+ res = double_int_smin (o0, o1);
break;
case SMAX:
- if (h1 > h2
- || (h1 == h2
- && ((unsigned HOST_WIDE_INT) l1
- > (unsigned HOST_WIDE_INT) l2)))
- lv = l1, hv = h1;
- else
- lv = l2, hv = h2;
+ res = double_int_smax (o0, o1);
break;
case UMIN:
- if ((unsigned HOST_WIDE_INT) h1 < (unsigned HOST_WIDE_INT) h2
- || (h1 == h2
- && ((unsigned HOST_WIDE_INT) l1
- < (unsigned HOST_WIDE_INT) l2)))
- lv = l1, hv = h1;
- else
- lv = l2, hv = h2;
+ res = double_int_umin (o0, o1);
break;
case UMAX:
- if ((unsigned HOST_WIDE_INT) h1 > (unsigned HOST_WIDE_INT) h2
- || (h1 == h2
- && ((unsigned HOST_WIDE_INT) l1
- > (unsigned HOST_WIDE_INT) l2)))
- lv = l1, hv = h1;
- else
- lv = l2, hv = h2;
+ res = double_int_umax (o0, o1);
break;
case LSHIFTRT: case ASHIFTRT:
case ASHIFT:
case ROTATE: case ROTATERT:
- if (SHIFT_COUNT_TRUNCATED)
- l2 &= (GET_MODE_BITSIZE (mode) - 1), h2 = 0;
-
- if (h2 != 0 || l2 >= GET_MODE_BITSIZE (mode))
- return 0;
-
- if (code == LSHIFTRT || code == ASHIFTRT)
- rshift_double (l1, h1, l2, GET_MODE_BITSIZE (mode), &lv, &hv,
- code == ASHIFTRT);
- else if (code == ASHIFT)
- lshift_double (l1, h1, l2, GET_MODE_BITSIZE (mode), &lv, &hv, 1);
- else if (code == ROTATE)
- lrotate_double (l1, h1, l2, GET_MODE_BITSIZE (mode), &lv, &hv);
- else /* code == ROTATERT */
- rrotate_double (l1, h1, l2, GET_MODE_BITSIZE (mode), &lv, &hv);
+ {
+ unsigned HOST_WIDE_INT cnt;
+
+ if (SHIFT_COUNT_TRUNCATED)
+ o1 = double_int_zext (o1, GET_MODE_BITSIZE (mode));
+
+ if (!double_int_fits_in_uhwi_p (o1)
+ || double_int_to_uhwi (o1) >= GET_MODE_BITSIZE (mode))
+ return 0;
+
+ cnt = double_int_to_uhwi (o1);
+
+ if (code == LSHIFTRT || code == ASHIFTRT)
+ res = double_int_rshift (o0, cnt, GET_MODE_BITSIZE (mode),
+ code == ASHIFTRT);
+ else if (code == ASHIFT)
+ res = double_int_lshift (o0, cnt, GET_MODE_BITSIZE (mode),
+ true);
+ else if (code == ROTATE)
+ res = double_int_lrotate (o0, cnt, GET_MODE_BITSIZE (mode));
+ else /* code == ROTATERT */
+ res = double_int_rrotate (o0, cnt, GET_MODE_BITSIZE (mode));
+ }
break;
default:
return 0;
}
- return immed_double_const (lv, hv, mode);
+ return immed_double_int_const (res, mode);
}
if (CONST_INT_P (op0) && CONST_INT_P (op1)
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