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Prevent superfluous label generation

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This commit is contained in:
ceriel 1991-03-01 14:54:43 +00:00
parent bd1da2f86c
commit e1b6ddca2c
1 changed files with 13 additions and 4 deletions
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17
util/ego/cj/cj.c
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@ -181,15 +181,24 @@ STATIC jump_cross(l1,l2,b1,b2)
/* Now adjust the EM text */ /* Now adjust the EM text */
l = PREV(l1); l = PREV(l1);
while (l && INSTR(l) == op_lab) {
l1 = l;
l = PREV(l);
}
if (l == (line_p) 0) { if (l == (line_p) 0) {
b1->b_start = (line_p) 0; b1->b_start = (line_p) 0;
} else { } else {
l->l_next = (line_p) 0; l->l_next = (line_p) 0;
} }
l = newline(OPINSTRLAB); if (INSTR(l1) == op_lab) {
l->l_instr = op_lab; l = l1;
INSTRLAB(l) = freshlabel(); }
DLINK(l,l1); else {
l = newline(OPINSTRLAB);
l->l_instr = op_lab;
INSTRLAB(l) = freshlabel();
DLINK(l,l1);
}
b->b_start = l; b->b_start = l;
for (l = l2; INSTR(l) != op_bra; l = l->l_next) { for (l = l2; INSTR(l) != op_bra; l = l->l_next) {
assert (l != (line_p) 0); assert (l != (line_p) 0);