1 files changed, 84 insertions, 2 deletions
diff --git a/utils/qc/machcap.c b/utils/qc/machcap.c
index 5fae5731..e9f9a988 100644
--- a/utils/qc/machcap.c
+++ b/utils/qc/machcap.c
@@ -1,16 +1,98 @@
 #include	"gc.h"
 
-/* default, like old cc */
 int
 machcap(Node *n)
 {
 	if(n == Z)
-		return 0;	/* test */
+		return 1;	/* test */
 	switch(n->op){
+
+	case OADD:
+	case OAND:
+	case OOR:
+	case OSUB:
+	case OXOR:
+		if(typev[n->left->type->etype])
+			return 1;
+		break;
+
+	case OMUL:
+	case OLMUL:
+	case OASMUL:
+	case OASLMUL:
+		return 1;
+
+	case OLSHR:
+	case OASHR:
+	case OASHL:
+	case OASASHL:
+	case OASASHR:
+	case OASLSHR:
+		return 1;
+
+	case OCAST:
+		if(typev[n->type->etype]) {
+			if(!typefd[n->left->type->etype])
+				return 1;
+		} else if(!typefd[n->type->etype]) {
+			if(typev[n->left->type->etype])
+				return 1;
+		}
+		break;
+
 	case OCOMMA:
 	case OCOND:
 	case OLIST:
+	case OANDAND:
+	case OOROR:
+	case ONOT:
 		return 1;
+
+	case OCOM:
+	case ONEG:
+		if(typechl[n->left->type->etype])
+			return 1;
+		if(typev[n->left->type->etype])
+			return 1;
+		return 0;
+
+	case OASADD:
+	case OASSUB:
+	case OASAND:
+	case OASOR:
+	case OASXOR:
+		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;
+
+	case ODIV:
+	case OLDIV:
+	case OLMOD:
+	case OMOD:
+		return 0;
+
+	case OASDIV:
+	case OASLDIV:
+	case OASLMOD:
+	case OASMOD:
+		return 0;
+
 	}
 	return 0;
 }