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#include "gc.h"
int
machcap(Node *n)
{
// return 0;
if(n == Z)
return 1; /* test */
switch(n->op) {
case OMUL:
case OLMUL:
case OASMUL:
case OASLMUL:
if(typechl[n->type->etype])
return 1;
if(typev[n->type->etype]) {
// if(typev[n->type->etype] && n->right->op == OCONST) {
// if(hi64v(n->right) == 0)
return 1;
}
break;
case OCOM:
case ONEG:
case OADD:
case OAND:
case OOR:
case OSUB:
case OXOR:
case OASHL:
case OLSHR:
case OASHR:
if(typechlv[n->left->type->etype])
return 1;
break;
case OCAST:
if(typev[n->type->etype]) {
if(typechlp[n->left->type->etype])
return 1;
}
else if(!typefd[n->type->etype]) {
if(typev[n->left->type->etype])
return 1;
}
break;
case OCOND:
case OCOMMA:
case OLIST:
case OANDAND:
case OOROR:
case ONOT:
return 1;
case OASADD:
case OASSUB:
case OASAND:
case OASOR:
case OASXOR:
return 1;
case OASASHL:
case OASASHR:
case OASLSHR:
return 1;
case OPOSTINC:
case OPOSTDEC:
case OPREINC:
case OPREDEC:
return 1;
case OEQ:
case ONE:
case OLE:
case OGT:
case OLT:
case OGE:
case OHI:
case OHS:
case OLO:
case OLS:
//print("%O\n", n->op);
return 1;
}
return 0;
}
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