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bc: simplify use of "ip" in loop parsing functions

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function                                             old     new   delta
zbc_parse_stmt_possibly_auto                        2106    2065     -41
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-41)             Total: -41 bytes
   text	   data	    bss	    dec	    hex	filename
 982076	    485	   7296	 989857	  f1aa1	busybox_old
 982035	    485	   7296	 989816	  f1a78	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-12-16 22:44:51 +01:00
parent 146a79d19c
commit 06ade77002
2 changed files with 33 additions and 6 deletions
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8
miscutils/bc.c
View File

@ -4174,7 +4174,6 @@ static BC_STATUS zbc_parse_while(BcParse *p)
{
BcStatus s;
BcInstPtr ip;
BcInstPtr *ipp;
size_t *label;
size_t n;
@ -4214,14 +4213,13 @@ static BC_STATUS zbc_parse_while(BcParse *p)
bc_parse_push(p, BC_INST_JUMP);
bc_parse_pushIndex(p, n);
ipp = bc_vec_top(&p->exits);
label = bc_vec_top(&p->conds);
dbg_lex("%s:%d BC_INST_JUMP to %d", __func__, __LINE__, *label);
bc_parse_push(p, BC_INST_JUMP);
bc_parse_pushIndex(p, *label);
label = bc_vec_item(&p->func->labels, ipp->idx);
label = bc_vec_item(&p->func->labels, ip.idx);
dbg_lex("%s:%d rewriting label: %d -> %d", __func__, __LINE__, *label, p->func->code.len);
*label = p->func->code.len;
@ -4238,7 +4236,6 @@ static BC_STATUS zbc_parse_for(BcParse *p)
{
BcStatus s;
BcInstPtr ip;
BcInstPtr *ipp;
size_t *label;
size_t cond_idx, exit_idx, body_idx, update_idx;
size_t n;
@ -4318,7 +4315,6 @@ static BC_STATUS zbc_parse_for(BcParse *p)
bc_parse_push(p, BC_INST_JUMP);
bc_parse_pushIndex(p, n);
ipp = bc_vec_top(&p->exits);
label = bc_vec_top(&p->conds);
//TODO: commonalize?
@ -4326,7 +4322,7 @@ static BC_STATUS zbc_parse_for(BcParse *p)
bc_parse_push(p, BC_INST_JUMP);
bc_parse_pushIndex(p, *label);
label = bc_vec_item(&p->func->labels, ipp->idx);
label = bc_vec_item(&p->func->labels, ip.idx);
dbg_lex("%s:%d rewriting label: %d -> %d", __func__, __LINE__, *label, p->func->code.len);
*label = p->func->code.len;

31
testsuite/bc.tests
View File

@ -76,6 +76,37 @@ testing "bc print 1,2,3" \
"123" \
"" "print 1,2,3"
testing "bc nested loops and breaks" \
"bc" \
"\
11
21
31
22
12
99
" \
"" "\
if(1) {
11
while(1) {
21
while(1) {
31
break
32
}
22
break
23
}
12
} else {
88
}
99
"
tar xJf bc_large.tar.xz
for f in bc*.bc; do