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gc: minor const simplifications

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R=ken2
CC=golang-dev
https://golang.org/cl/217069
This commit is contained in:
Russ Cox 2010-02-21 11:18:09 -08:00
parent f59cb49a5a
commit ed13d39972
1 changed files with 15 additions and 32 deletions
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47
src/cmd/gc/const.c
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@ -173,6 +173,7 @@ convlit1(Node **np, Type *t, int explicit)
if(isint[et]) {
switch(ct) {
default:
goto bad;
case CTCPLX:
case CTFLT:
n->val = toint(n->val);
@ -185,6 +186,7 @@ convlit1(Node **np, Type *t, int explicit)
if(isfloat[et]) {
switch(ct) {
default:
goto bad;
case CTCPLX:
case CTINT:
n->val = toflt(n->val);
@ -966,43 +968,28 @@ defaultlit(Node **np, Type *t)
break;
case CTINT:
n->type = types[TINT];
if(t != T) {
if(isint[t->etype])
n->type = t;
else
if(isfloat[t->etype]) {
n->type = t;
n->val = toflt(n->val);
}
}
overflow(n->val, n->type);
break;
goto num;
case CTFLT:
n->type = types[TFLOAT];
goto num;
case CTCPLX:
n->type = types[TCOMPLEX];
goto num;
num:
if(t != T) {
if(isfloat[t->etype])
n->type = t;
else
if(isint[t->etype]) {
n->type = t;
n->val = toint(n->val);
}
}
overflow(n->val, n->type);
break;
case CTCPLX:
n->type = types[TCOMPLEX];
if(t != T) {
if(iscomplex[t->etype])
n->type = t;
else
if(isfloat[t->etype]) {
n->type = t;
n->val = toflt(n->val);
} else
if(isint[t->etype]) {
}
else
if(iscomplex[t->etype]) {
n->type = t;
n->val = toint(n->val);
n->val = tocplx(n->val);
}
}
overflow(n->val, n->type);
@ -1015,6 +1002,7 @@ defaultlit(Node **np, Type *t)
* defaultlit on both nodes simultaneously;
* if they're both ideal going in they better
* get the same type going out.
* force means must assign concrete (non-ideal) type.
*/
void
defaultlit2(Node **lp, Node **rp, int force)
@ -1192,13 +1180,8 @@ convconst(Node *con, Type *t, Val *val)
if(isfloat[tt]) {
con->val = toflt(con->val);
// if(con->val.ctype == CTINT) {
// con->val.ctype = CTFLT;
// con->val.u.fval = mal(sizeof *con->val.u.fval);
// mpmovefixflt(con->val.u.fval, val->u.xval);
// }
// if(con->val.ctype != CTFLT)
// fatal("convconst ctype=%d %T", con->val.ctype, t);
if(con->val.ctype != CTFLT)
fatal("convconst ctype=%d %T", con->val.ctype, t);
if(tt == TFLOAT32)
con->val.u.fval = truncfltlit(con->val.u.fval, t);
return;