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expand.c
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expand.c
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/*ident "@(#)cls4:src/expand.c 1.25" */
/*******************************************************************************
C++ source for the C++ Language System, Release 3.0. This product
is a new release of the original cfront developed in the computer
science research center of AT&T Bell Laboratories.
Copyright (c) 1993 UNIX System Laboratories, Inc.
Copyright (c) 1991, 1992 AT&T and UNIX System Laboratories, Inc.
Copyright (c) 1984, 1989, 1990 AT&T. All Rights Reserved.
THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE of AT&T and UNIX System
Laboratories, Inc. The copyright notice above does not evidence
any actual or intended publication of such source code.
expand.c:
expand inline functions
******************************************************************/
#include "cfront.h"
static Ptable Scope;
// extern void display_expr(Pexpr);
static char *temp(char *vn, Pname fn)
//
// make the name of the temporary: __Xvn00xxxxxx
// xxxxxx is a representation of fn's address -
// anything unique will do. we use radix 32 here
// add two bytes to make the name sensitive to the scope
// to avoid re-using temps when an inline is expanded in
// more than one other inline that is then called in the
// same expression
//
{
if (vn[0] != '_' || vn[1] != '_' || vn[2] != 'X') {
unsigned long a = (unsigned long) fn->tp;
// al = the number of radix-32 chars in a
unsigned long aa = a;
int al = 0;
while (aa) {
al++;
aa >>= 5;
}
// allocate memory for the result
int ll = strlen(vn);
char *s = new char[ll + al + 8];
register char *p = s;
// append _ _ X vn
*p++ = '_';
*p++ = '_';
*p++ = 'X';
strcpy(p, vn);
p += ll;
*p++ = '0';
*p++ = '0';
// append representation of `a'
while (a) {
*p++ = "abcdefghijklmnopqrstuvwxyz012345"[a & 037];
a >>= 5;
}
// append scope representation and trailing null
*p++ = "abcdefghijlkmnop"[((int(Scope) >> 4) & 15)];
*p++ = "abcdefghijlkmnop"[((int(Scope) >> 8) & 15)];
*p = '\0';
// tmp error('d',"temp(%s,%n) -- scope %d -- returning %s",vn,fn,scope,s);
return s;
} else {
// tmp error('d',"temp(%s,%n) -- scope %d -- returning %s",vn,fn,scope,vn);
return vn;
}
}
Plist inllist; // keep track of ctors defined inline so dtors won't be called if succeeding goto
Pname dcl_local(Ptable scope, Pname an, Pname fn, bit tempflag = 0) {
if (scope == 0 || scope->base == 0) {
if (sti_tbl == 0)
sti_tbl = new table(8, gtbl, 0);
scope = sti_tbl;
// error('s',"cannot expand inlineF needing temporaryV in nonF context");
// return an;
}
if (an->n_stclass == STATIC) {
if (an->tp->base != FCT && an->tp->base != OVERLOAD)
error('s', &fn->where, "cannot expand inlineF with static%n", an);
return an;
}
char *s;
if (tempflag)
s = make_name('X');
else
s = temp(an->string, fn);
Pname nx = new name(s);
Ptype atp = an->tp;
// error('d',"dcl_local(%d,%n,%n) -> %s",scope,an,fn,s);
// if (ansi_opt)
// nx->n_initializer=an->n_initializer;
while (atp->base == TYPE)
atp = Pbase(atp)->b_name->tp;
if (atp->base == VEC) {
if (an->n_scope == ARG) {
Pptr t = new ptr(PTR, Pvec(atp)->typ);
nx->tp = t;
} else {
error('s', &fn->where, "cannot expand inlineF needing temporaryV of arrayT");
return an;
}
} else
nx->tp = atp;
nx->tp = unconst_type(nx->tp);
PERM(nx->tp);
nx->n_used = an->n_used;
nx->n_assigned_to = an->n_assigned_to;
nx->n_addr_taken = an->n_addr_taken;
nx->n_xref = an->n_xref;
// error('d',"nx %n %t,",nx,nx->tp);
Pname r = scope->look(nx->string, 0);
if (r) {
// error('d',"r%n rtp%t nxtp%t", r, r->tp,nx->tp);
if (r->tp->check(nx->tp, 0))
error('s', &fn->where,
"cannot expand inlineF %a with two local variables with the sameN (%s)", fn,
an->string);
else
r = 0;
}
if (r == 0) {
r = scope->insert(nx, 0);
// error('d',"%d %d %d %d",r->n_stclass,an->n_stclass,r->lex_level,an->lex_level);
if (r->tp->base == COBJ)
inllist = new name_list(r, inllist);
r->n_stclass = an->n_stclass;
r->lex_level = an->lex_level;
delete nx;
r->where.line = 0;
}
return r;
}
int ck_cast(Ptype t1, Ptype t2)
/*
return a value of type t2 from a function returning a t1
return 1 if cast is needed
*/
{
st:
while (t1->base == TYPE)
t1 = Pbase(t1)->b_name->tp;
while (t2->base == TYPE)
t2 = Pbase(t2)->b_name->tp;
if (t1 == t2)
return 0;
if (t1->base != t2->base)
return 1;
switch (t1->base) {
case RPTR:
case PTR: {
t1 = Pptr(t1)->typ;
if (t1->base == VOID)
return 1;
t2 = Pptr(t2)->typ;
goto st;
}
case CHAR:
case SHORT:
case INT:
case LONG:
if (Pbase(t1)->b_unsigned != Pbase(t2)->b_unsigned)
return 1;
break;
case COBJ: {
Pname nn = Pbase(t1)->b_name;
if (Pclass(nn->tp)->csu == UNION)
return 0;
if (t2->base == COBJ && nn->tp == Pbase(t2)->b_name->tp)
return 0;
return 1;
}
}
return 0;
}
int makeCM(Ptype t)
/* return 1 if the type is not a primitive type
* this will cause the generation of (t,0)
* note: ``t'' is guaranteed not to be 0
*/
{
while (t->base == TYPE)
t = Pbase(t)->b_name->tp;
switch (t->base) {
case FLOAT:
case DOUBLE:
case LDOUBLE:
case CHAR:
case SHORT:
case INT:
case LONG:
case EOBJ:
return 0;
default:
return 1;
}
}
static int ret_seen = 0;
static int has_return(Pstmt sl) {
int hr;
if (!sl)
return 0;
hr = 0;
for (Pstmt s = sl; s; s = s->s_list) {
switch (s->base) {
case WHILE:
case DO:
case FOR:
case SWITCH:
case BLOCK:
case LABEL:
case CASE:
case DEFAULT:
hr = has_return(s->s);
break;
case IF:
hr = has_return(s->s);
hr = hr || has_return(s->else_stmt);
break;
case PAIR:
hr = has_return(s->s);
hr = hr || has_return(s->s2);
break;
case RETURN:
if (s->e && s->e != dummy)
hr = 1;
break;
}
if (hr)
return 1;
}
return 0;
}
Pstmt stmt::expand()
/*
copy the statements with the formal arguments replaced by ANAMES
called once only per inline function
expand_tbl!=0 if the function should be transformed into an expression
and expand_tbl is the table for local variables
*/
{
if (this == 0)
error('i', "0->S::expand() for%n", expand_fn);
Pstmt ostmt = Cstmt;
if (where.line)
Cstmt = this;
if (memtbl) { /* check for static variables */
register Ptable t = memtbl;
register int i;
for (register Pname n = t->get_mem(i = 1); n; NEXT_NAME(t, n, i)) {
if (n->n_stclass == STATIC) {
if (n->tp->base == FCT || n->tp->base == OVERLOAD)
continue;
error('s', "cannot expand inlineF with static%n", n);
n->n_stclass = AUTO;
}
n->where.line = 0;
}
}
if (expand_tbl) { /* make expression */
Pexpr ee;
if (memtbl) { // temporaries
int i;
for (Pname n = memtbl->get_mem(i = 1); n; NEXT_NAME(memtbl, n, i)) {
// error('d',"block %n %k %d %d",n,base,memtbl->real_block == this,n->lex_level);
if (n->base != NAME || n->tp == any_type || n->n_key == CLASS)
continue;
if (base == BLOCK && memtbl->real_block == this
&& n->lex_level < 2
//&& n->n_table == Pfct(expand_fn->tp)->body->memtbl
&& (n->string[0] != '_' // promoted from called
// inlines
|| n->string[1] != '_' || (n->string[2] != 'X' && n->string[2] != 'K'))) {
// error('d',"not promoting%n",n);
continue;
}
if (memtbl != scope) {
Pname nn = dcl_local(scope, n, expand_fn);
nn->base = NAME;
n->string = nn->string;
} else if (n->tp && n->tp->base != FCT && n->tp->base != OVERLOAD) {
n->string = temp(n->string, expand_fn);
n->where.line = 0;
}
}
}
switch (base) {
default:
error('s', "cannot expand inlineF%a with %kS in inline", expand_fn, base);
Cstmt = ostmt;
return Pstmt(dummy);
case BLOCK:
DB(if (Edebug >= 2) {
error('d', "stmt::expand() -- block");
display_stmt(this);
});
if (s_list) {
ee = Pexpr(s_list->expand());
if (s) {
ee = new expr(CM, Pexpr(s->expand()), ee);
ee->tp = ee->e2->tp;
PERM(ee);
}
Cstmt = ostmt;
return Pstmt(ee);
}
if (s) {
Pstmt st = s->expand();
Cstmt = ostmt;
return st;
}
Cstmt = ostmt;
return Pstmt(zero);
case PAIR:
ee = s2 ? Pexpr(s2->expand()) : 0;
ee = new expr(CM, s ? Pexpr(s->expand()) : 0, ee);
ee->tp = ee->e2->tp;
if (s_list) {
ee = new expr(CM, ee, Pexpr(s_list->expand()));
ee->tp = ee->e2->tp;
}
PERM(ee);
Cstmt = ostmt;
return Pstmt(ee);
case RETURN:
ret_seen = 1;
s_list = 0;
if (e == 0)
ee = zero;
else {
ee = e->expand();
Ptype tt = Pfct(expand_fn->tp)->s_returns;
if (tt == 0)
tt = Pfct(expand_fn->tp)->returns;
// error('d',"return::expand() -- ee==%k tt==%t",ee?ee->base:0,tt);
// display_expr(ee);
if (tt != ee->tp && ck_cast(tt, ee->tp))
ee = new cast(tt, ee);
}
Cstmt = ostmt;
return Pstmt(ee);
case SM:
if (e == 0 || e == dummy)
ee = zero;
else {
if (e->base == DEREF)
e = e->e1;
ee = e->expand();
}
if (s_list) {
ee = new expr(CM, ee, (Pexpr) s_list->expand());
ee->tp = ee->e2->tp;
PERM(ee);
}
Cstmt = ostmt;
return (Pstmt) ee;
case ASM:
error('s', "asm() in value-returning inline");
return this;
case IF: {
int ors = ret_seen;
ret_seen = 0;
ee = Pexpr(s->expand());
if (ee->tp->memptr() || ee->base == ASSIGN && ee->e1->tp && ee->e1->tp->base != PTR)
ee = new expr(G_CM, ee, zero);
Pexpr qq = new expr(QUEST, ee, zero);
int ret1 = ret_seen;
ret_seen = 0;
qq->cond = e->expand();
qq->e2 = else_stmt ? Pexpr(else_stmt->expand()) : zero;
if (!has_return(s) && !has_return(else_stmt) && qq->e1->tp && qq->e2->tp
&& qq->e1->tp->check(qq->e2->tp, ASSIGN)) {
qq->e1 = new cast(void_type, qq->e1);
qq->e2 = new cast(void_type, qq->e2);
}
#if 0
if (qq->e1->tp && !qq->e1->tp->check(void_type, 0)) {
qq->e1 = new expr(G_CM, qq->e1, zero);
qq->e1->tp = zero_type;
}
if (qq->e2->tp && !qq->e2->tp->check(void_type, 0)) {
qq->e2 = new expr(G_CM, qq->e2, zero);
qq->e2->tp = zero_type;
}
#endif
int ret2 = ret_seen;
if (ret1 + ret2 && s_list) {
error('s', "cannot expand inlineF%a with S after \"return\"", expand_fn);
ret_seen = 0;
}
ret_seen += ret1;
ret_seen += ret2;
ret_seen += ors;
// handle ``if (x) class_object_valued_expression;''
Ptype t1 = qq->e1->tp;
if (qq->e1->base == G_CM)
t1 = qq->e1->e2->tp;
Ptype t2 = qq->e2->tp;
if (t1 && t1->base == FCT)
t1 = Pfct(t1)->s_returns ? Pfct(t1)->s_returns : Pfct(t1)->returns;
if (t2 && t2->base == FCT)
t2 = Pfct(t2)->s_returns ? Pfct(t2)->s_returns : Pfct(t2)->returns;
Pname c1 = t1 ? t1->is_cl_obj() : 0;
Pname c2 = t2 ? t2->is_cl_obj() : 0;
int z1 = c1 && c1 != c2;
int z2 = c2 && c1 != c2;
// error('d',"if()%k%t else%k%t",qq->e1->base,t1,qq->e2->base,t2);
// error('d',"c1%n c2%n %d %d",c1,c2,z1,z2);
// display_expr(qq);
if (c1 == 0 && c2 == 0 && t1 && t2 && t2->check(t1, ASSIGN) && t1->check(t2, ASSIGN)) {
z1 = makeCM(t1);
z2 = makeCM(t2);
if ((z1 && ret1) || (z2 && ret2))
error('s', "cannot expand inlineF with return in ifS");
}
// error('d',"if()%k%t else%k%t",qq->e1->base,t1,qq->e2->base,t2);
// error('d',"c1%n c2%n %d %d",c1,c2,z1,z2);
// display_expr(qq);
if (t1 && z1 == 0) {
// since zero is acceptable to all pointer types
// we need only ``fix'' z1 and z2 will take care
// of itself
z1 = t1->is_ptr_or_ref() && t2 && t2->is_ptr_or_ref() && t1->check(t2, 0)
&& !const_problem;
}
// error('d',"if()%k%t else%k%t",qq->e1->base,t1,qq->e2->base,t2);
// error('d',"c1%n c2%n %d %d",c1,c2,z1,z2);
// display_expr(qq);
if (z1) {
Pexpr v = (z2 == 0 && t2 && t2->is_ptr_or_ref()) ? new cast(t2, zero) : zero;
qq->e1 = new expr(CM, qq->e1, v);
qq->e1->tp = qq->e1->e1->tp;
}
// error('d',"if()%k%t else%k%t",qq->e1->base,t1,qq->e2->base,t2);
// error('d',"c1%n c2%n %d %d",c1,c2,z1,z2);
// display_expr(qq);
if (z2) {
Pexpr v = (z1 == 0 && t1 && t1->is_ptr_or_ref()) ? new cast(t1, zero) : zero;
qq->e2 = new expr(CM, qq->e2, v);
qq->e2->tp = qq->e2->e1->tp;
}
// error('d',"if()%k%t else%k%t",qq->e1->base,t1,qq->e2->base,t2);
// error('d',"c1%n c2%n %d %d",c1,c2,z1,z2);
// display_expr(qq);
if (s_list) {
qq = new expr(CM, qq, Pexpr(s_list->expand()));
qq->tp = qq->e2->tp;
} else
qq->tp = qq->e1->tp;
PERM(qq);
Cstmt = ostmt;
return Pstmt(qq);
}
}
}
where.line = 0;
switch (base) {
default:
if (e)
e = e->expand();
break;
case PAIR:
if (s2)
s2 = s2->expand();
break;
case BLOCK:
break;
case FOR:
if (for_init)
for_init = for_init->expand();
if (e2)
e2 = e2->expand();
case ASM:
break;
case LABEL:
case GOTO: {
char *s = new char[strlen(d->string) + 1];
strcpy(s, d->string);
d->string = s;
break;
}
// case RETURN:
// case BREAK:
// case CONTINUE:
// error('s',"cannot expand inlineF%n with %kS",expand_fn,base);
}
if (s)
s = s->expand();
if (s_list)
s_list = s_list->expand();
PERM(this);
Cstmt = ostmt;
return this;
}
Pexpr expr::expand() {
if (this == 0)
error('i', "E::expand(0)");
switch (base) {
case NAME:
if (expand_tbl && Pname(this)->n_scope == FCT
&& Pname(this)->lex_level > expand_fn->lex_level) {
Pname n = Pname(this);
char *s = n->string;
if (s[0] == '_' && s[1] == '_' && (s[2] == 'X' || s[2] == 'K'))
break;
// Pname cn = expand_fn->n_table->t_name;
// n->string = temp(s,expand_fn->string,(cn)?cn->string:0);
n->string = temp(s, expand_fn);
}
case DUMMY: // null or error
case DTOR: // dummy type destructor
case ICON:
case FCON:
case CCON:
case IVAL:
// case FVAL:
// case LVAL:
case STRING:
case ZERO:
case TEXT:
case ANAME:
case MDOT:
break;
case ICALL:
if (expand_tbl && e1 == 0) {
int ors = ret_seen;
ret_seen = 0;
Pname fn = il->fct_name;
Pfct f = Pfct(fn->tp);
if (f->f_expr == 0
// f->returns==void_type
// && f->s_returns!=int_type
// && fn->n_oper!=CTOR
)
error('s', &fn->where,
"cannot expand value-returning inline%a with call of non-value-returning "
"inline%a",
expand_fn, fn);
// else
// error("inline%n called before defined",fn);
ret_seen = ors;
}
break;
case SIZEOF:
case CAST:
case G_CAST:
if (tp2)
PERM(tp2);
goto rrr;
case QUEST:
cond = cond->expand();
default:
if (e2)
e2 = e2->expand();
case REF:
case DOT:
rrr:
if (e1)
e1 = e1->expand();
break;
}
switch (base) {
case CM:
case G_CM:
if (tp == 0)
tp = e2->tp;
}
PERM(this);
return this;
}
int nin;
static int watch_out;
bit expr::not_simple(int inflag)
/*
is a temporary variable needed to hold the value of this expression
as an argument for an inline expansion?
return 1; if side effect
return 2; if modifies expression
*/
{
int s;
// error('d',"not_simple%k",base);
switch (base) {
default:
return 2;
case NAME:
if (nin == 0 && Pname(this)->n_table == gtbl)
return 2; // unsafe: aliasing
case ZERO:
case IVAL:
// case FVAL:
case ICON:
case CCON:
case FCON:
return 0;
case STRING:
::watch_out = 1;
return 0;
case MDOT:
return mem->not_simple(inflag);
case SIZEOF:
return (e1 == 0 || e1 == dummy) ? 0 : e1->not_simple(inflag);
case G_ADDROF:
case ADDROF:
return e2->not_simple(inflag);
case CAST:
case G_CAST:
return e1->not_simple(inflag);
case DOT:
case REF:
::watch_out = 1;
if (!inflag)
return e1->not_simple(inflag);
else
return 2;
case UMINUS:
case NOT:
case COMPL:
return e2->not_simple(inflag);
case DEREF:
s = e1->not_simple(inflag);
if (1 < s)
return 2;
if (e2 == 0)
return s;
return s |= e2->not_simple(inflag);
case MUL:
case DIV:
case MOD:
case PLUS:
case MINUS:
case LS:
case RS:
case AND:
case OR:
case ER:
case LT:
case LE:
case GT:
case GE:
case EQ:
case NE:
case ANDAND:
case OROR:
case CM:
s = e1->not_simple(inflag);
if (1 < s)
return 2;
return s |= e2->not_simple(inflag);
case QUEST:
s = cond->not_simple(inflag);
if (1 < s)
return 2;
s |= e1->not_simple(inflag);
if (1 < s)
return 2;
return s |= e2->not_simple(inflag);
case ANAME:
if (curr_icall) {
Pname n = (Pname) this;
int argno = int(n->n_val);
for (Pin il = curr_icall; il; il = il->i_next)
if (n->n_table == il->i_table)
goto aok;
goto bok;
aok:
return (il->i_args[argno].local) ? 0 : il->i_args[argno].arg->not_simple(inflag);
}
bok:
error('i', "expand aname%n", this);
case G_CM:
case VALUE:
case NEW:
case GNEW:
case CALL:
case G_CALL:
case ICALL:
case ASSIGN:
case INCR:
case DECR:
case ASPLUS:
case ASMINUS:
case ASMUL:
case ASDIV:
case ASMOD:
case ASAND:
case ASOR:
case ASER:
case ASLS:
case ASRS:
return 2;
}
}
extern void uninline(Pname fn);
// extern Pname new_fct;
// extern Pname del_fct;
extern Pstmt del_list;
extern Pstmt break_del_list;
extern Pstmt continue_del_list;
extern Pname curr_fct;
extern Pexpr init_list;
extern Pname make_default_ctor(Pclass cl);
void expand_itor(Pclass cl) {
// error('d',"expand_itor(%t)",cl);
Pexpr s2 = curr_expr;
Pstmt s5 = del_list;
Pstmt s6 = break_del_list;
Pstmt s7 = continue_del_list;
Pname s8 = curr_fct;
Pexpr s9 = init_list;
(void) cl->make_itor(1);
curr_expr = s2;
del_list = s5;
break_del_list = s6;
continue_del_list = s7;
curr_fct = s8;
init_list = s9;
}
/*
extern Pname make_default_dtor(Pclass cl);
void expand_dtor(Pclass cl)
{
//error('d',"expand_itor(%t)",cl);
Pexpr s2 = curr_expr;
Pstmt s5 = del_list;
Pstmt s6 = break_del_list;
Pstmt s7 = continue_del_list;
Pname s8 = curr_fct;
Pexpr s9 = init_list;
(void) make_default_dtor(cl);
curr_expr = s2;
del_list = s5;
break_del_list = s6;
continue_del_list = s7;
curr_fct = s8;
init_list = s9;
}
void expand_ictor(Pclass cl)
{
//error('d',"expand_itor(%t)",cl);
Pexpr s2 = curr_expr;
Pstmt s5 = del_list;
Pstmt s6 = break_del_list;
Pstmt s7 = continue_del_list;
Pname s8 = curr_fct;
Pexpr s9 = init_list;
(void) make_default_ctor(cl);
curr_expr = s2;
del_list = s5;
break_del_list = s6;
continue_del_list = s7;
curr_fct = s8;
init_list = s9;
}
*/
Pexpr fct::expand(Pname fn, Ptable scope, Pexpr ll)
/*
expand call to (previously defined) inline function in "scope"
with the argument list "ll"
(1) declare variables in "scope"
(2) initialize argument variables
(3) link to body
*/
{
Scope = scope;
// error('d',"expand%s() body %d f_expr %d inline %d",fn->string,body,f_expr,f_inline);
if (f_inline == ITOR) {
Pexpr s1 = last_expanded;
expand_itor(memof);
last_expanded = s1;
last_stmt = stmtno;
// this = Pfct(fn->tp);
Pfct nf = Pfct(fn->tp);
if (nf->f_inline == 0 && nf->f_imeasure) {
uninline(fn);
return 0;
}
return nf->expand(fn, scope, ll);
}
// error('d',"expand %n body %d f_expr %d defined %d",fn,body,f_expr,defined);
// error('d',"inline %d memtbl %d scope %d",f_inline,Pfct(fn->tp)->body->memtbl,scope);
// display_stmt(body);
if ((body == 0 && f_expr == 0) // before defined
|| ((defined & SIMPLIFIED) == 0) // before simplified
|| (Pfct(fn->tp)->body->memtbl == scope) // while defining
|| (f_inline > 1) // recursive call
) { // so don't expand
if (warning_opt)
error('w', "cannot inline%n in thisE", fn);
// *** SBL: move def from template.h to cfront.h
extern Pfct current_fct_instantiation;
if (fct_base == INSTANTIATED)
current_fct_instantiation = this;
if (fn->n_addr_taken++ == 0)
fn->dcl_print(0);
if (fct_base == INSTANTIATED)
current_fct_instantiation = 0;
return 0;
}
if (fn->n_oper == CTOR) {
Pclass cl = Pclass(fn->n_table->t_name->tp);
if (cl->c_body == 3)
cl->print_all_vtbls(cl);
}
Pin il = new iline;
Pexpr ic = new texpr(ICALL, 0, 0);
int ns = 0;
for (Pname an = f_args; an; an = an->n_list)
ns++;
il->fct_name = fn;
il->i_slots = ns;
il->i_args = ns ? new ia[ns] : 0;
ic->il = il;
ic->tp = s_returns ? s_returns : returns;
// Pname at = (f_this) ? f_this : (f_result) ? f_result : argtype;
Pname at = f_args;
f_inline++;
if (at)
il->i_table = at->n_table;
int i = 0;
int not_simple = 0; /* is a temporary argument needed? */
for (Pname n = at; n && ll; n = n->n_list, i++) {
/* check formal/actual argument pairs
and generate temporaries as necessary
*/
Pexpr ee;
if (ll->base == ELIST) {
ee = ll->e1;
ll = ll->e2;
} else {
ee = ll;
ll = 0;
}
/* could be avoided when expanding into a block */
il->i_args[i].local = 0;
int s;
// try to protect agains aliasing through pointers and references
for (Pname m = at; m; m = m->n_list) {
Pptr p;
if (n != m) {
// if ((p=m->tp->is_ptr()) || (p=m->tp->is_ref()))
if (p = m->tp->is_ptr_or_ref())
if (p->check(n->tp, 0) == 0 || p->typ->check(n->tp, 0) == 0)
goto zxc;
}
}
::watch_out = 0;
int notsimple;
notsimple = ee->not_simple(1);
if (notsimple == 0 && ::watch_out && n->n_used > 1 && ee->base != G_ADDROF)
goto zxc;
if (n->n_assigned_to == FUDGE111 && ee != zero && notsimple == 0) {
if (ee && ee->e1 && (ee->e1->base == NAME) && (!strcmp(ee->e1->string, "this")))
goto zxc;
} else if (n->n_addr_taken || n->n_assigned_to)
goto zxc;
else if (s = notsimple) {
if ( /*n->n_used==0 // n_used not set for ``this''
|| */ 1 < s || 1 < n->n_used) { // not safe
zxc:
if (last_expanded && last_expanded != dummy && last_expanded == curr_expr
&& last_stmt == stmtno) {
if (warning_opt)
error('w', "%a not inlined, called twice in an expression", fn);
f_inline--;
delete il->i_args;
delete il;
// *** SBL: move to cfront.h from template.h
extern Pfct current_fct_instantiation;
if (fct_base == INSTANTIATED)
current_fct_instantiation = this;
if (fn->n_addr_taken++ == 0)
fn->dcl_print(0);
if (fct_base == INSTANTIATED)
current_fct_instantiation = 0;
return 0;
}
// error('d',"zxc %n %t ee %d %t",n,n->tp,ee->base,ee->tp);
// if (ee && ee->tp && (ee->tp->base==EOBJ) && ansi_opt)
// ; // do nothing
// else {
Pname nn = dcl_local(scope, n, fn, 1);
nn->base = NAME;
il->i_args[i].local = nn;
++not_simple;
// if (nn->tp->is_ref()
// && ee->tp
// && ee->tp->is_ptr_or_ref()==0) ee = ee->address();
// }
}
}
il->i_args[i].arg = ee;
il->i_args[i].tp = n->tp;
}
Ptable tbl = body->memtbl;
if (f_expr) { // generate comma expression
char loc_var = 0;
/* look for local variables needing declaration: */
for (n = tbl->get_mem(i = 1); n; NEXT_NAME(tbl, n, i)) {
// error('d',"n %n %d",n,n->base);
// error('d',"loc %n %d %d %d",n,n->n_used,n->n_assigned_to,n->n_addr_taken);
if (n->base == NAME // don't re-declare the args
&& (n->tp->base != FCT && n->tp->base != OVERLOAD)
&& (n->n_used || n->n_assigned_to || n->n_addr_taken)) {
if (last_expanded && last_expanded == curr_expr && last_stmt == stmtno) {
if (warning_opt)
error('w', "cannot inline%n in thisE", fn);
f_inline--;
delete il->i_args;
delete il;
extern Pfct current_fct_instantiation;