rtx op;
enum machine_mode mode;
{
- long value;
+ HOST_WIDE_INT value;
if (GET_CODE (op) != CONST_INT)
return FALSE;
if ((GET_CODE (cmp0) == REG || GET_CODE (cmp0) == SUBREG)
&& GET_CODE (cmp1) == CONST_INT)
{
- int value = INTVAL (cmp1);
+ HOST_WIDE_INT value = INTVAL (cmp1);
rtx truth = (rtx)0;
if (test == ITEST_GEU && value == 0)
if (GET_CODE (cmp1) == CONST_INT)
{
- int value = INTVAL (cmp1);
+ HOST_WIDE_INT value = INTVAL (cmp1);
if (value < p_info->const_low || value > p_info->const_high)
cmp1 = force_reg (SImode, cmp1);
}
}
break;
}
-
+
+ /* Handle always true or always false cases directly */
+ if (GET_CODE (cmp0) == CONST_INT && GET_CODE (cmp1) == CONST_INT)
+ {
+ HOST_WIDE_INT sval0 = INTVAL (cmp0);
+ HOST_WIDE_INT sval1 = INTVAL (cmp1);
+ unsigned long uval0 = sval0;
+ unsigned long uval1 = sval1;
+ int truth = 0;
+
+ switch (test_code)
+ {
+ default:
+ goto fail;
+
+ case EQ: truth = (sval0 == sval1); break;
+ case NE: truth = (sval0 != sval1); break;
+ case GT: truth = (sval0 > sval1); break;
+ case GE: truth = (sval0 >= sval1); break;
+ case LT: truth = (sval0 < sval1); break;
+ case LE: truth = (sval0 <= sval1); break;
+ case GTU: truth = (uval0 > uval1); break;
+ case GEU: truth = (uval0 >= uval1); break;
+ case LTU: truth = (uval0 < uval1); break;
+ case LEU: truth = (uval0 <= uval1); break;
+ }
+
+ if (invert)
+ truth = ! truth;
+
+ if (truth)
+ emit_jump_insn (gen_rtx (SET, VOIDmode, pc_rtx, label1));
+
+ return;
+ }
+
/* Generate the jump */
if (invert)
{