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#include "gc.h"
int
machcap(Node *n)
{
if(n == Z)
return 0; /* test */
switch(n->op) {
case OASADD:
case OASSUB:
case OASAND:
case OASXOR:
case OASOR:
case OADD:
case OSUB:
case OAND:
case OXOR:
case OOR:
if(typev[n->type->etype] && typev[n->left->type->etype] && typev[n->right->type->etype])
return 1;
break;
case OMUL:
case OLMUL:
if(typev[n->type->etype] && typeil[n->left->type->etype] && typeil[n->right->type->etype]
&& typeu[n->type->etype] == typeu[n->left->type->etype]
&& typeu[n->type->etype] == typeu[n->right->type->etype])
return 1;
break;
case OASASHL:
case OASASHR:
case OASLSHR:
case OASHL:
case OASHR:
case OLSHR:
if(typev[n->type->etype] && typev[n->left->type->etype] && n->right->op == OCONST)
return 1;
break;
case OCAST:
if(typeilp[n->type->etype] && typev[n->left->type->etype])
return 1;
if(typev[n->type->etype] && typeilp[n->left->type->etype])
return 1;
break;
}
return 0;
}
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