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(find_barrier): Always use get_attr_length to compute length of instructions. 

(find_barrier): Always use get_attr_length to compute length of
instructions.  If count_hi or count_si out of range at end, need two
PREV_INSN calls not one.

From-SVN: r10496
This commit is contained in:
Richard Kenner 1995-10-21 18:22:27 -04:00
parent 00e94d6531
commit 5dbcc9c0dc
1 changed files with 9 additions and 9 deletions
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18
gcc/config/sh/sh.c
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@ -1213,14 +1213,11 @@ find_barrier (from)
before the table. This gives 1020. */
while (from && count_si < 1020 && count_hi < 512)
{
int inc;
int inc = get_attr_length (from);
if (GET_CODE (from) == BARRIER)
found_barrier = from;
/* Count the length of this insn - we assume that all moves will
be 2 bytes long, except the DImode/DFmode movess. */
if (broken_move (from))
{
rtx src = SET_SRC (PATTERN (from));
@ -1237,10 +1234,7 @@ find_barrier (from)
}
else
found_si = 1;
inc = (GET_MODE_SIZE (GET_MODE (src)) > 4) ? 4 : 2;
}
else
inc = get_attr_length (from);
if (GET_CODE (from) == INSN
&& GET_CODE (PATTERN (from)) == SET
@ -1270,8 +1264,14 @@ find_barrier (from)
so we'll make one. */
rtx label = gen_label_rtx ();
/* We went one instruction too far above. */
from = PREV_INSN (from);
/* If we exceeded the range, then we must back up over the last
instruction we looked at. Otherwise, we just need to undo the
NEXT_INSN at the end of the loop. */
if (count_hi > 512 || count_si > 1020)
from = PREV_INSN (PREV_INSN (from));
else
from = PREV_INSN (from);
/* Walk back to be just before any jump or label.
Putting it before a label reduces the number of times the branch
around the constant pool table will be hit. Putting it before