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Commit 0b3093f0 authored by Ken Thompson's avatar Ken Thompson
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debugging to get fmt to run 

SVN=122046
parent b1a3463a
Hide whitespace changes
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Showing with 386 additions and 92 deletions
src/cmd/6g/gen.c
View file @ 0b3093f0
......@@ -692,19 +692,26 @@ cgen_asop(Node *nl, Node *nr, int op)
fatal("cgen_asop both sides call");
}
a = optoas(op, nl->type);
if(nr->ullman > nl->ullman) {
fatal("gcgen_asopen");
}
// BOTCH make special case for DIVQ
regalloc(&n1, nl->type, N);
a = optoas(op, nl->type);
if(nl->addable) {
cgen(nr, &n1);
gins(a, &n1, nl);
regalloc(&n2, nr->type, N);
cgen(nr, &n2);
regalloc(&n1, nl->type, N);
cgen(nl, &n1);
gins(a, &n2, &n1);
gmove(&n1, nl);
regfree(&n1);
regfree(&n2);
return;
}
if(nr->ullman > nl->ullman) {
fatal("gcgen_asopen");
}
regalloc(&n1, nl->type, N);
igen(nl, &n2, N);
cgen(nr, &n1);
gins(a, &n1, &n2);
......
src/cmd/gc/go.h
View file @ 0b3093f0
......@@ -529,8 +529,11 @@ Node* nodpanic(long);
Node* newcompat(Node*);
Node* stringop(Node*);
Node* convas(Node*);
Node* reorder(Node*);
void arrayconv(Type*, Node*);
Node* reorder1(Node*);
Node* reorder2(Node*);
Node* reorder3(Node*);
Node* reorder4(Node*);
/*
* const.c
......
src/cmd/gc/sys.go
View file @ 0b3093f0
......@@ -23,6 +23,10 @@ func intstring(int64) string;
func byteastring(*byte, int32) string;
func mkiface(*byte, *byte, *struct{}) interface{};
func frexp(float64) (int32, float64); // break fp into exp,fract
func ldexp(int32, float64) float64; // make fp from exp,fract
func modf(float64) (float64, float64); // break fp into double.double
export
mal
breakpoint
......@@ -41,4 +45,8 @@ export
intstring
byteastring
mkiface
frexp
ldexp
modf
;
src/cmd/gc/sysimport.c
View file @ 0b3093f0
......@@ -2,10 +2,10 @@ char* sysimport =
"type sys._e002 {}\n"
"type sys.uint8 2\n"
"type sys._e003 *sys.uint8\n"
"type sys._o116 {_e114 sys._e003}\n"
"type sys._o137 {_e135 sys._e003}\n"
"type sys.uint32 6\n"
"type sys._i118 {_e115 sys.uint32}\n"
"type sys._e001 (sys._e002 sys._o116 sys._i118)\n"
"type sys._i139 {_e136 sys.uint32}\n"
"type sys._e001 (sys._e002 sys._o137 sys._i139)\n"
"var !sys.mal sys._e001\n"
"type sys._e005 {}\n"
"type sys._e006 {}\n"
......@@ -15,80 +15,95 @@ char* sysimport =
"type sys._e009 {}\n"
"type sys._e010 {}\n"
"type sys.int32 5\n"
"type sys._i124 {_e123 sys.int32}\n"
"type sys._e008 (sys._e009 sys._e010 sys._i124)\n"
"type sys._i145 {_e144 sys.int32}\n"
"type sys._e008 (sys._e009 sys._e010 sys._i145)\n"
"var !sys.panicl sys._e008\n"
"type sys._e012 {}\n"
"type sys._e013 {}\n"
"type sys.bool 12\n"
"type sys._i129 {_e128 sys.bool}\n"
"type sys._e011 (sys._e012 sys._e013 sys._i129)\n"
"type sys._i150 {_e149 sys.bool}\n"
"type sys._e011 (sys._e012 sys._e013 sys._i150)\n"
"var !sys.printbool sys._e011\n"
"type sys._e015 {}\n"
"type sys._e016 {}\n"
"type sys.float64 10\n"
"type sys._i134 {_e133 sys.float64}\n"
"type sys._e014 (sys._e015 sys._e016 sys._i134)\n"
"type sys._i155 {_e154 sys.float64}\n"
"type sys._e014 (sys._e015 sys._e016 sys._i155)\n"
"var !sys.printfloat sys._e014\n"
"type sys._e018 {}\n"
"type sys._e019 {}\n"
"type sys.int64 7\n"
"type sys._i139 {_e138 sys.int64}\n"
"type sys._e017 (sys._e018 sys._e019 sys._i139)\n"
"type sys._i160 {_e159 sys.int64}\n"
"type sys._e017 (sys._e018 sys._e019 sys._i160)\n"
"var !sys.printint sys._e017\n"
"type sys._e021 {}\n"
"type sys._e022 {}\n"
"type sys._e023 25\n"
"type sys.string *sys._e023\n"
"type sys._i144 {_e143 sys.string}\n"
"type sys._e020 (sys._e021 sys._e022 sys._i144)\n"
"type sys._i165 {_e164 sys.string}\n"
"type sys._e020 (sys._e021 sys._e022 sys._i165)\n"
"var !sys.printstring sys._e020\n"
"type sys._e025 {}\n"
"type sys._e026 {}\n"
"type sys._e027 *sys.uint8\n"
"type sys._i149 {_e148 sys._e027}\n"
"type sys._e024 (sys._e025 sys._e026 sys._i149)\n"
"type sys._i170 {_e169 sys._e027}\n"
"type sys._e024 (sys._e025 sys._e026 sys._i170)\n"
"var !sys.printpointer sys._e024\n"
"type sys._e029 {}\n"
"type sys._o156 {_e153 sys.string}\n"
"type sys._i158 {_e154 sys.string _e155 sys.string}\n"
"type sys._e028 (sys._e029 sys._o156 sys._i158)\n"
"type sys._o177 {_e174 sys.string}\n"
"type sys._i179 {_e175 sys.string _e176 sys.string}\n"
"type sys._e028 (sys._e029 sys._o177 sys._i179)\n"
"var !sys.catstring sys._e028\n"
"type sys._e031 {}\n"
"type sys._o166 {_e163 sys.int32}\n"
"type sys._i168 {_e164 sys.string _e165 sys.string}\n"
"type sys._e030 (sys._e031 sys._o166 sys._i168)\n"
"type sys._o187 {_e184 sys.int32}\n"
"type sys._i189 {_e185 sys.string _e186 sys.string}\n"
"type sys._e030 (sys._e031 sys._o187 sys._i189)\n"
"var !sys.cmpstring sys._e030\n"
"type sys._e033 {}\n"
"type sys._o177 {_e173 sys.string}\n"
"type sys._i179 {_e174 sys.string _e175 sys.int32 _e176 sys.int32}\n"
"type sys._e032 (sys._e033 sys._o177 sys._i179)\n"
"type sys._o198 {_e194 sys.string}\n"
"type sys._i200 {_e195 sys.string _e196 sys.int32 _e197 sys.int32}\n"
"type sys._e032 (sys._e033 sys._o198 sys._i200)\n"
"var !sys.slicestring sys._e032\n"
"type sys._e035 {}\n"
"type sys._o188 {_e185 sys.uint8}\n"
"type sys._i190 {_e186 sys.string _e187 sys.int32}\n"
"type sys._e034 (sys._e035 sys._o188 sys._i190)\n"
"type sys._o209 {_e206 sys.uint8}\n"
"type sys._i211 {_e207 sys.string _e208 sys.int32}\n"
"type sys._e034 (sys._e035 sys._o209 sys._i211)\n"
"var !sys.indexstring sys._e034\n"
"type sys._e037 {}\n"
"type sys._o197 {_e195 sys.string}\n"
"type sys._i199 {_e196 sys.int64}\n"
"type sys._e036 (sys._e037 sys._o197 sys._i199)\n"
"type sys._o218 {_e216 sys.string}\n"
"type sys._i220 {_e217 sys.int64}\n"
"type sys._e036 (sys._e037 sys._o218 sys._i220)\n"
"var !sys.intstring sys._e036\n"
"type sys._e039 {}\n"
"type sys._o206 {_e203 sys.string}\n"
"type sys._o227 {_e224 sys.string}\n"
"type sys._e040 *sys.uint8\n"
"type sys._i208 {_e204 sys._e040 _e205 sys.int32}\n"
"type sys._e038 (sys._e039 sys._o206 sys._i208)\n"
"type sys._i229 {_e225 sys._e040 _e226 sys.int32}\n"
"type sys._e038 (sys._e039 sys._o227 sys._i229)\n"
"var !sys.byteastring sys._e038\n"
"type sys._e042 {}\n"
"type sys._e043 <>\n"
"type sys._o217 {_e213 sys._e043}\n"
"type sys._o238 {_e234 sys._e043}\n"
"type sys._e044 *sys.uint8\n"
"type sys._e045 *sys.uint8\n"
"type sys._s224 {}\n"
"type sys._e046 *sys._s224\n"
"type sys._i219 {_e214 sys._e044 _e215 sys._e045 _e216 sys._e046}\n"
"type sys._e041 (sys._e042 sys._o217 sys._i219)\n"
"type sys._s245 {}\n"
"type sys._e046 *sys._s245\n"
"type sys._i240 {_e235 sys._e044 _e236 sys._e045 _e237 sys._e046}\n"
"type sys._e041 (sys._e042 sys._o238 sys._i240)\n"
"var !sys.mkiface sys._e041\n"
"type sys._e048 {}\n"
"type sys._o251 {_e248 sys.int32 _e249 sys.float64}\n"
"type sys._i253 {_e250 sys.float64}\n"
"type sys._e047 (sys._e048 sys._o251 sys._i253)\n"
"var !sys.frexp sys._e047\n"
"type sys._e050 {}\n"
"type sys._o260 {_e257 sys.float64}\n"
"type sys._i262 {_e258 sys.int32 _e259 sys.float64}\n"
"type sys._e049 (sys._e050 sys._o260 sys._i262)\n"
"var !sys.ldexp sys._e049\n"
"type sys._e052 {}\n"
"type sys._o270 {_e267 sys.float64 _e268 sys.float64}\n"
"type sys._i272 {_e269 sys.float64}\n"
"type sys._e051 (sys._e052 sys._o270 sys._i272)\n"
"var !sys.modf sys._e051\n"
"))\n"
;
src/cmd/gc/walk.c
View file @ 0b3093f0
......@@ -161,9 +161,6 @@ loop:
n->type = *getoutarg(t);
if(t->outtuple == 1)
n->type = n->type->type->type;
else
if(!top)
yyerror("function call must be single valued (%d)", t->outtuple);
walktype(n->right, 0);
......@@ -173,12 +170,12 @@ loop:
case OCALLINTER:
l = ascompatte(n->op, getinarg(t), &n->right, 0);
n->right = reorder(l);
n->right = reorder1(l);
break;
case OCALL:
l = ascompatte(n->op, getinarg(t), &n->right, 0);
n->right = reorder(l);
n->right = reorder1(l);
break;
case OCALLMETH:
......@@ -187,7 +184,7 @@ loop:
r = ascompatte(n->op, getthis(t), &n->left->left, 0);
if(l != N)
r = nod(OLIST, r, l);
n->right = reorder(r);
n->right = reorder1(r);
break;
}
goto ret;
......@@ -204,12 +201,12 @@ loop:
goto ret;
if(r->op == OCALL && l->op == OLIST) {
// botch callmulti - need to do more
walktype(l, 0);
walktype(r, 0);
l = ascompatet(n->op, &n->left, &r->type, 0);
if(l != N && l->op == OAS)
*n = *reorder(l);
if(l != N) {
*n = *nod(OLIST, r, reorder2(l));
}
goto ret;
}
......@@ -217,7 +214,7 @@ loop:
walktype(r, 0);
l = ascompatee(n->op, &n->left, &n->right);
if(l != N)
*n = *reorder(l);
*n = *reorder3(l);
goto ret;
case OBREAK:
......@@ -296,7 +293,7 @@ loop:
walktype(n->left, 0);
l = ascompatte(n->op, getoutarg(curfn->type), &n->left, 1);
if(l != N)
n->left = reorder(l);
n->left = reorder4(l);
goto ret;
case ONOT:
......@@ -561,6 +558,7 @@ loop:
nottop:
fatal("walktype: not top %O", n->op);
goto ret;
badt:
if(n->right == N) {
......@@ -701,13 +699,6 @@ lookdot(Node *n, Type *t, int d)
Type *f, *r, *c;
Sym *s;
//dowidth(t);
//print("\nlookdot %T\n", t);
//for(f=t->type; f!=T; f=f->down) {
//print(" %3ld", f->width);
//print(" %S\n", f->sym);
//}
r = T;
s = n->sym;
if(d > 0)
......@@ -822,17 +813,17 @@ walkdot(Node *n)
}
/*
* check assign expression list to
* a expression list. called in
* expr-list = expr-list
*/
Node*
ascompatee(int op, Node **nl, Node **nr)
{
Node *l, *r, *nn, *a;
Iter savel, saver;
/*
* check assign expression list to
* a expression list. called in
* expr-list = expr-list
*/
l = listfirst(&savel, nl);
r = listfirst(&saver, nr);
nn = N;
......@@ -842,7 +833,7 @@ loop:
if(l == N || r == N) {
if(l != r)
yyerror("error in shape across assignment");
return nn;
return rev(nn);
}
convlit(r, l->type);
......@@ -856,18 +847,13 @@ loop:
if(nn == N)
nn = a;
else
nn = nod(OLIST, nn, a);
nn = nod(OLIST, a, nn);
l = listnext(&savel);
r = listnext(&saver);
goto loop;
}
/*
* check assign type list to
* a expression list. called in
* expr-list = func()
*/
Node*
ascompatet(int op, Node **nl, Type **nr, int fp)
{
......@@ -875,6 +861,11 @@ ascompatet(int op, Node **nl, Type **nr, int fp)
Type *r;
Iter savel, saver;
/*
* check assign type list to
* a expression list. called in
* expr-list = func()
*/
l = listfirst(&savel, nl);
r = structfirst(&saver, nr);
nn = N;
......@@ -883,7 +874,7 @@ loop:
if(l == N || r == T) {
if(l != N || r != T)
yyerror("error in shape across assignment");
return nn;
return rev(nn);
}
if(!ascompat(l->type, r->type)) {
......@@ -896,7 +887,7 @@ loop:
if(nn == N)
nn = a;
else
nn = nod(OLIST, nn, a);
nn = nod(OLIST, a, nn);
l = listnext(&savel);
r = structnext(&saver);
......@@ -904,12 +895,6 @@ loop:
goto loop;
}
/*
* check assign expression list to
* a type list. called in
* return expr-list
* func(expr-list)
*/
Node*
ascompatte(int op, Type **nl, Node **nr, int fp)
{
......@@ -917,6 +902,12 @@ ascompatte(int op, Type **nl, Node **nr, int fp)
Node *r, *nn, *a;
Iter savel, saver;
/*
* check assign expression list to
* a type list. called in
* return expr-list
* func(expr-list)
*/
l = structfirst(&savel, nl);
r = listfirst(&saver, nr);
nn = N;
......@@ -925,7 +916,7 @@ loop:
if(l == T || r == N) {
if(l != T || r != N)
yyerror("error in shape across assignment");
return nn;
return rev(nn);
}
convlit(r, l->type);
......@@ -939,7 +930,7 @@ loop:
if(nn == N)
nn = a;
else
nn = nod(OLIST, nn, a);
nn = nod(OLIST, a, nn);
l = structnext(&savel);
r = listnext(&saver);
......@@ -1277,12 +1268,6 @@ ret:
return n;
}
Node*
reorder(Node *n)
{
return n;
}
void
arrayconv(Type *t, Node *n)
{
......@@ -1310,3 +1295,125 @@ loop:
l = listnext(&save);
goto loop;
}
Node*
reorder1(Node *n)
{
Iter save;
Node *l, *r, *f;
int c, t;
/*
* from ascompat[te]
* evaluating actual function arguments.
* f(a,b)
* if there is exactly one function expr,
* then it is done first. otherwise must
* make temp variables
*/
l = listfirst(&save, &n);
c = 0; // function calls
t = 0; // total parameters
loop1:
if(l == N) {
if(c == 0 || t == 1)
return n;
if(c > 1) {
yyerror("reorder1: too many funcation calls evaluating parameters");
return n;
}
goto pass2;
}
if(l->op == OLIST)
fatal("reorder1 OLIST");
t++;
if(l->ullman >= UINF)
c++;
l = listnext(&save);
goto loop1;
pass2:
l = listfirst(&save, &n);
f = N; // isolated function call
r = N; // rest of them
loop2:
if(l == N) {
if(r == N || f == N)
fatal("reorder1 not nil 1");
r = nod(OLIST, f, r);
return rev(r);
}
if(l->ullman >= UINF) {
if(f != N)
fatal("reorder1 not nil 2");
f = l;
} else
if(r == N)
r = l;
else
r = nod(OLIST, l, r);
l = listnext(&save);
goto loop2;
}
Node*
reorder2(Node *n)
{
Iter save;
Node *l;
int c;
/*
* from ascompat[et]
* a,b = f()
* return of a multi.
* there can be no function calls at all,
* or they will over-write the return values.
*/
l = listfirst(&save, &n);
c = 0;
loop1:
if(l == N) {
if(c > 0)
yyerror("reorder2: too many funcation calls evaluating parameters");
return n;
}
if(l->op == OLIST)
fatal("reorder2 OLIST");
if(l->ullman >= UINF)
c++;
l = listnext(&save);
goto loop1;
}
Node*
reorder3(Node *n)
{
/*
* from ascompat[ee]
* a,b = c,d
* simultaneous assignment. there can be
* later use of an earlier lvalue.
*/
return n;
}
Node*
reorder4(Node *n)
{
/*
* from ascompat[te]
* return c,d
* return expression assigned to output
* parameters. there may be no problems.
*/
return n;
}
src/runtime/runtime.c
View file @ 0b3093f0
......@@ -563,6 +563,160 @@ sys_ifacei2s(Sigs *ss, Map *m, void *s)
}
}
enum
{
NANEXP = 2047<<20,
NANMASK = 2047<<20,
NANSIGN = 1<<31,
};
static uint64 uvnan = 0x7FF0000000000001;
static uint64 uvinf = 0x7FF0000000000000;
static uint64 uvneginf = 0xFFF0000000000000;
static int32
isInf(float64 d, int32 sign)
{
uint64 x;
x = *(uint64*)&d;
if(sign == 0) {
if(x == uvinf || x == uvneginf)
return 1;
return 0;
}
if(sign > 0) {
if(x == uvinf)
return 1;
return 0;
}
if(x == uvneginf)
return 1;
return 0;
}
static float64
NaN(void)
{
return *(float64*)&uvnan;
}
static int32
isNaN(float64 d)
{
uint64 x;
x = *(uint64*)&d;
return ((uint32)x>>32)==0x7FF00000 && !isInf(d, 0);
}
static float64
Inf(int32 sign)
{
if(sign < 0)
return *(float64*)&uvinf;
else
return *(float64*)&uvneginf;
}
enum
{
MASK = 0x7ffL,
SHIFT = 64-11-1,
BIAS = 1022L,
};
static float64
frexp(float64 d, int32 *ep)
{
uint64 x;
if(d == 0) {
*ep = 0;
return 0;
}
x = *(uint64*)&d;
*ep = (int32)((x >> SHIFT) & MASK) - BIAS;
x &= ~((uint64)MASK << SHIFT);
x |= (uint64)BIAS << SHIFT;
return *(float64*)&x;
}
static float64
ldexp(float64 d, int32 e)
{
uint64 x;
if(d == 0)
return 0;
x = *(uint64*)&d;
e += (int32)(x >> SHIFT) & MASK;
if(e <= 0)
return 0; /* underflow */
if(e >= MASK){ /* overflow */
if(d < 0)
return Inf(-1);
return Inf(1);
}
x &= ~((uint64)MASK << SHIFT);
x |= (uint64)e << SHIFT;
return *(float64*)&x;
}
static float64
modf(float64 d, float64 *ip)
{
float64 dd;
uint64 x;
int32 e;
if(d < 1) {
if(d < 0) {
d = modf(-d, ip);
*ip = -*ip;
return -d;
}
*ip = 0;
return d;
}
x = *(uint64*)&d;
e = (int32)((x >> SHIFT) & MASK) - BIAS;
/*
* Keep the top 11+e bits; clear the rest.
*/
if(e <= 64-11)
x &= ~((uint64)1 << (64-11-e))-1;
dd = *(float64*)&x;
*ip = dd;
return d - dd;
}
// func frexp(float64) (int32, float64); // break fp into exp,fract
void
sys_frexp(float64 din, int32 iou, float64 dou)
{
dou = frexp(din, &iou);
FLUSH(&dou);
}
//func ldexp(int32, float64) float64; // make fp from exp,fract
void
sys_ldexp(float64 din, int32 ein, float64 dou)
{
dou = ldexp(din, ein);
FLUSH(&dou);
}
//func modf(float64) (float64, float64); // break fp into double+double
float64
sys_modf(float64 din, float64 dou1, float64 dou2)
{
dou1 = modf(din, &dou2);
FLUSH(&dou2);
}
void
check(void)
{
......
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