static rtx subst_insn;
-/* If nonzero, this is the insn that should be presumed to be
- immediately in front of `subst_insn'. */
-
-static rtx subst_prev_insn;
-
/* This is the lowest CUID that `subst' is currently dealing with.
get_last_value will not return a value if the register was set at or
after this CUID. If not for this mechanism, we could get confused if
if (i1 && INSN_CUID (i1) > INSN_CUID (i2))
temp = i1, i1 = i2, i2 = temp;
- subst_prev_insn = 0;
added_links_insn = 0;
/* First check for one important special-case that the code below will
never appear in the insn stream so giving it the same INSN_UID
as I2 will not cause a problem. */
- subst_prev_insn = i1
- = gen_rtx (INSN, VOIDmode, INSN_UID (i2), 0, i2,
- XVECEXP (PATTERN (i2), 0, 1), -1, 0, 0);
+ i1 = gen_rtx (INSN, VOIDmode, INSN_UID (i2), 0, i2,
+ XVECEXP (PATTERN (i2), 0, 1), -1, 0, 0);
SUBST (PATTERN (i2), XVECEXP (PATTERN (i2), 0, 0));
SUBST (XEXP (SET_SRC (PATTERN (i2)), 0),
{
rtx insn, set;
- /* If there is an insn that is supposed to be immediately
- in front of subst_insn, use it. */
- if (subst_prev_insn != 0)
- insn = subst_prev_insn;
- else
- for (insn = prev_nonnote_insn (subst_insn);
- insn && INSN_CUID (insn) >= subst_low_cuid;
- insn = prev_nonnote_insn (insn))
- ;
+ for (insn = prev_nonnote_insn (subst_insn);
+ insn && INSN_CUID (insn) >= subst_low_cuid;
+ insn = prev_nonnote_insn (insn))
+ ;
if (insn
&& (set = single_set (insn)) != 0