ref: 9f76a7f6819ac04552b4fb6588156f3e4089d1d7
dir: /utils/6c/machcap.c/
#include "gc.h"
int
machcap(Node *n)
{
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]) {
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:
return 1;
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:
return 1;
}
return 0;
}