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SVN=125265
This commit is contained in:
Ken Thompson 2008-06-28 17:27:39 -07:00
parent dc1602ca23
commit d3237f9a2a
6 changed files with 43 additions and 82 deletions
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21
src/cmd/6g/cgen.c
View File

@ -7,7 +7,6 @@
void
cgen(Node *n, Node *res)
{
long lno;
Node *nl, *nr, *r;
Node n1, n2;
int a;
@ -20,8 +19,6 @@ cgen(Node *n, Node *res)
if(n == N || n->type == T)
return;
lno = setlineno(n);
if(res == N || res->type == T)
fatal("cgen: res nil");
@ -239,7 +236,7 @@ uop: // unary
goto ret;
ret:
lineno = lno;
;
}
void
@ -249,7 +246,6 @@ agen(Node *n, Node *res)
Node n1, n2, n3, tmp;
ulong w;
Type *t;
long lno;
if(debug['g']) {
dump("\nagen-res", res);
@ -258,8 +254,6 @@ agen(Node *n, Node *res)
if(n == N || n->type == T)
return;
lno = setlineno(n);
if(!isptr[res->type->etype])
fatal("agen: not tptr: %T", res->type);
@ -391,7 +385,7 @@ agen(Node *n, Node *res)
}
ret:
lineno = lno;
;
}
vlong
@ -416,7 +410,6 @@ igen(Node *n, Node *a, Node *res)
void
bgen(Node *n, int true, Prog *to)
{
long lno;
int et, a;
Node *nl, *nr, *r;
Node n1, n2, tmp;
@ -425,11 +418,10 @@ bgen(Node *n, int true, Prog *to)
if(debug['g']) {
dump("\nbgen", n);
}
if(n == N)
n = booltrue;
lno = setlineno(n);
nl = n->left;
nr = n->right;
@ -580,16 +572,14 @@ bgen(Node *n, int true, Prog *to)
goto ret;
ret:
lineno = lno;
;
}
void
sgen(Node *n, Node *ns, ulong w)
{
Node nodl, nodr;
long c, lno;
lno = setlineno(n);
long c;
if(debug['g']) {
dump("\nsgen-res", ns);
@ -627,5 +617,4 @@ sgen(Node *n, Node *ns, ulong w)
gins(AMOVSB, N, N); // MOVB *(SI)+,*(DI)+
}
lineno = lno;
}

58
src/cmd/6g/gen.c
View File

@ -23,13 +23,11 @@ compile(Node *fn)
Prog *ptxt;
long lno;
if(fn->nbody == N)
return;
lno = setlineno(fn);
curfn = fn;
lineno = curfn->lineno; // for diagnostics
dowidth(curfn->type);
walk(curfn);
@ -58,6 +56,7 @@ compile(Node *fn)
// gins(AGOK, N, N);
pc->as = ARET; // overwrite AEND
pc->lineno = lineno;
// fill in final stack size
ptxt->to.offset = rnd(stksize+maxarg, maxround);
@ -442,7 +441,7 @@ swgen(Node *n)
dflt = P;
c1 = listfirst(&save1, &n->nbody);
while(c1 != N) {
lineno = c1->lineno; // for diagnostics
setlineno(c1);
if(c1->op != OCASE) {
if(s0 == C && dflt == P)
yyerror("unreachable statements in a switch");
@ -483,6 +482,8 @@ swgen(Node *n)
c1 = listnext(&save1);
}
lineno = lno;
if(any)
patch(gbranch(AJMP, T), breakpc);
@ -492,6 +493,7 @@ swgen(Node *n)
cgen(n->ntest, &tmp);
for(s=s0; s!=C; s=s->slink) {
setlineno(s->scase);
memset(&n1, 0, sizeof(n1));
n1.op = OEQ;
n1.left = &tmp;
@ -534,9 +536,6 @@ cgen_callinter(Node *n, Node *res)
{
Node *i, *f;
Node tmpi, nodo, nodr, nodsp;
long lno;
lno = setlineno(n);
i = n->left;
if(i->op != ODOTINTER)
@ -580,20 +579,16 @@ cgen_callinter(Node *n, Node *res)
regfree(&nodr);
setmaxarg(n->left->type);
lineno = lno;
}
void
cgen_callmeth(Node *n)
{
Node *l;
long lno;
// generate a rewrite for method call
// (p.f)(...) goes to (f)(p,...)
lno = setlineno(n);
l = n->left;
if(l->op != ODOTMETH)
fatal("cgen_callmeth: not dotmethod: %N");
@ -605,7 +600,6 @@ cgen_callmeth(Node *n)
if(n->left->op == ONAME)
n->left->class = PEXTERN;
cgen_call(n);
lineno = lno;
}
void
@ -613,13 +607,10 @@ cgen_call(Node *n)
{
Type *t;
Node nod, afun;
long lno;
if(n == N)
return;
lno = setlineno(n);
if(n->left->ullman >= UINF) {
// if name involves a fn call
// precompute the address of the fn
@ -660,7 +651,7 @@ cgen_call(Node *n)
gins(ACALL, N, n->left);
ret:
lineno = lno;
;
}
void
@ -669,9 +660,6 @@ cgen_callret(Node *n, Node *res)
Node nod;
Type *fp, *t;
Iter flist;
long lno;
lno = setlineno(n);
t = n->left->type;
if(t->etype == TPTR32 || t->etype == TPTR64)
@ -685,12 +673,10 @@ cgen_callret(Node *n, Node *res)
nod.op = OINDREG;
nod.val.vval = D_SP;
nod.addable = 1;
nod.lineno = lineno;
nod.xoffset = fp->width;
nod.type = fp->type;
cgen_as(res, &nod, 0);
lineno = lno;
}
void
@ -699,9 +685,6 @@ cgen_aret(Node *n, Node *res)
Node nod1, nod2;
Type *fp, *t;
Iter flist;
long lno;
lno = setlineno(n);
t = n->left->type;
if(isptr[t->etype])
@ -715,24 +698,18 @@ cgen_aret(Node *n, Node *res)
nod1.op = OINDREG;
nod1.val.vval = D_SP;
nod1.addable = 1;
nod1.lineno = lineno;
nod1.xoffset = fp->width;
nod1.type = fp->type;
gins(ALEAQ, &nod1, res);
lineno = lno;
}
void
cgen_ret(Node *n)
{
long lno;
lno = setlineno(n);
gen(n->left); // copy out args
gins(ARET, N, N);
lineno = lno;
}
void
@ -742,8 +719,6 @@ cgen_asop(Node *n)
Node *nl, *nr;
long lno;
lno = setlineno(n);
nl = n->left;
nr = n->right;
@ -753,7 +728,7 @@ cgen_asop(Node *n)
n2 = *n;
n2.right = &n1;
cgen_asop(&n2);
return;
goto ret;
}
if(nr->ullman > nl->ullman) {
@ -778,7 +753,9 @@ cgen_asop(Node *n)
regfree(&n1);
regfree(&n2);
regfree(&n4);
lineno = lno;
ret:
;
}
void
@ -787,7 +764,6 @@ cgen_as(Node *nl, Node *nr, int op)
Node nc, n1;
Type *tl;
ulong w, c;
long lno;
if(nl == N)
return;
@ -796,8 +772,6 @@ cgen_as(Node *nl, Node *nr, int op)
if(tl == T)
return;
lno = setlineno(nl);
if(nr == N || isnil(nr)) {
if(isfat(tl)) {
/* clear a fat object */
@ -891,7 +865,7 @@ cgen_as(Node *nl, Node *nr, int op)
cgen(nr, nl);
ret:
lineno = lno;
;
}
int
@ -916,9 +890,6 @@ cgen_div(int op, Node *nl, Node *nr, Node *res)
{
Node n1, n2, n3;
int a, rax, rdx;
long lno;
lno = setlineno(nl);
rax = reg[D_AX];
rdx = reg[D_DX];
@ -992,7 +963,7 @@ cgen_div(int op, Node *nl, Node *nr, Node *res)
regfree(&n2);
ret:
lineno = lno;
;
}
/*
@ -1005,9 +976,6 @@ cgen_shift(int op, Node *nl, Node *nr, Node *res)
{
Node n1, n2;
int a, rcl;
long lno;
lno = setlineno(nl);
a = optoas(op, nl->type);
@ -1055,5 +1023,5 @@ cgen_shift(int op, Node *nl, Node *nr, Node *res)
regfree(&n2);
ret:
lineno = lno;
;
}

11
src/cmd/6g/gsubr.c
View File

@ -52,11 +52,14 @@ prog(int as)
clearp(pc);
if(lineno == 0) {
if(debug['K'])
warn("prog: line 0");
}
p->as = as;
p->lineno = lineno;
p->link = pc;
if(lineno == 0)
warn("line 0 %P\n", p);
return p;
}
@ -216,7 +219,6 @@ nodreg(Node *n, Type *t, int r)
memset(n, 0, sizeof(*n));
n->op = OREGISTER;
n->addable = 1;
n->lineno = lineno;
ullmancalc(n);
n->val.vval = r;
n->type = t;
@ -242,7 +244,6 @@ nodarg(Type *t, int fp)
n->sym = t->sym;
n->xoffset = t->width;
n->addable = 1;
n->lineno = lineno;
switch(fp) {
case 0: // output arg
@ -270,7 +271,6 @@ nodconst(Node *n, Type *t, vlong v)
memset(n, 0, sizeof(*n));
n->op = OLITERAL;
n->addable = 1;
n->lineno = lineno;
ullmancalc(n);
n->val.vval = v;
n->val.ctype = CTINT;
@ -1677,7 +1677,6 @@ tempname(Node *n, Type *t)
n->etype = t->etype;
n->class = PAUTO;
n->addable = 1;
n->lineno = lineno;
n->ullman = 0;
dowidth(t);

6
src/cmd/gc/lex.c
View File

@ -162,7 +162,8 @@ unimportfile(void)
if(curio.bin != nil) {
Bterm(curio.bin);
curio.bin = nil;
}
} else
lineno--; // re correct sys.6 line number
curio = pushedio;
pushedio.bin = nil;
inimportsys = 0;
@ -174,7 +175,8 @@ cannedimports(void)
char *file;
file = "sys.6";
linehist(file, 0);
lineno++; // if sys.6 is included on line 1,
linehist(file, 0); // the debugger gets confused
pushedio = curio;
curio.bin = nil;

8
src/cmd/gc/subr.c
View File

@ -102,8 +102,14 @@ setlineno(Node *n)
long lno;
lno = lineno;
if(n != N && n->op != ONAME)
if(n != N && n->op != ONAME) {
lineno = n->lineno;
if(lineno == 0) {
if(debug['K'])
warn("setlineno: line 0");
lineno = lno;
}
}
return lno;
}

21
src/cmd/gc/walk.c
View File

@ -26,8 +26,10 @@ walktype(Node *n, int top)
Node *r, *l;
Type *t;
Sym *s;
long lno;
int et, cl, cr;
long lno;
lno = setlineno(n);
/*
* walk the whole tree of the body of a function.
@ -35,7 +37,6 @@ walktype(Node *n, int top)
* compile-time constants are evaluated.
*/
lno = setlineno(n);
if(top == Exxx || top == Eyyy) {
dump("", n);
fatal("walktype: bad top=%d", top);
@ -44,6 +45,7 @@ walktype(Node *n, int top)
loop:
if(n == N)
goto ret;
setlineno(n);
if(debug['w'] > 1 && top == Etop && n->op != OLIST)
@ -765,6 +767,8 @@ walkswitch(Node *sw, Type*(*call)(Node*, Type*))
Type *place;
place = call(sw->ntest, T);
setlineno(sw);
n = sw->nbody;
if(n->op == OLIST)
n = n->left;
@ -776,9 +780,11 @@ walkswitch(Node *sw, Type*(*call)(Node*, Type*))
fatal("walkswitch: not case %O\n", n->op);
for(c=n->left; c!=N; c=c->right) {
if(c->op != OLIST) {
setlineno(c);
place = call(c, place);
break;
}
setlineno(c);
place = call(c->left, place);
}
}
@ -1216,9 +1222,7 @@ Node*
stringop(Node *n, int top)
{
Node *r, *c, *on;
long lno, l;
lno = setlineno(n);
long l;
switch(n->op) {
default:
@ -1310,7 +1314,6 @@ stringop(Node *n, int top)
}
walktype(r, top);
lineno = lno;
return r;
}
@ -1366,14 +1369,11 @@ algtype(Type *t)
Node*
mapop(Node *n, int top)
{
long lno;
Node *r, *a;
Type *t;
Node *on;
int alg1, alg2, cl, cr;
lno = setlineno(n);
//dump("mapop", n);
r = n;
@ -1553,19 +1553,16 @@ mapop(Node *n, int top)
break;
}
lineno = lno;
return r;
shape:
dump("shape", n);
fatal("mapop: cl=%d cr=%d, %O", top, n->op);
lineno = lno;
return N;
nottop:
dump("bad top", n);
fatal("mapop: top=%d %O", top, n->op);
lineno = lno;
return N;
}