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bug fixed: same problem as in r1.3, now with csb.

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Solution: only do block fusion if first block end on bra.
This commit is contained in:
bal 1985-09-19 11:14:55 +00:00
parent a18c5dd9c4
commit 8668e313f8
1 changed files with 5 additions and 6 deletions
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11
util/ego/bo/bo.c
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@ -190,13 +190,10 @@ STATIC mv_code(b1,b2)
line_p l,x;
l = last_code(b2->b_start,TRUE);
assert(INSTR(l) == op_bra);
DLINK(l,b1->b_start);
x = l->l_next;
if (TYPE(l) == OPINSTRLAB) {
assert(INSTR(x) == op_lab);
assert(INSTRLAB(l) == INSTRLAB(x));
rm_line(l,b2);
}
rm_line(l,b2);
if (INSTR(x) == op_lab) {
rm_line(x,b2);
}
@ -207,13 +204,15 @@ bo_switch(b)
{
bblock_p s,x;
Lindex i;
line_p l;
line_p l,bra;
if (Lnrelems(b->b_succ) == 1) {
s = (bblock_p) Lelem(Lfirst(b->b_succ));
if (b->b_start != (line_p) 0 &&
s->b_start != (line_p) 0 &&
Lnrelems(s->b_pred) == 1 &&
(bra = last_code(b->b_start,TRUE)) != (line_p) 0 &&
INSTR(bra) == op_bra &&
(s->b_next == (bblock_p) 0 ||
!Lis_elem(s->b_next,s->b_succ))) {
l = last_code(s->b_start,FALSE);