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ref: 8e41723741b8d011ff0412efed33a20dec37dc98
parent: e6d64bab9dc7c71c80e82b7c41555a413f502399
author: cinap_lenrek <[email protected]>
date: Sun Oct 4 16:07:34 EDT 2015 

5c: handle 64 bit mixedmode asop


--- a/sys/src/cmd/5c/cgen.c
+++ b/sys/src/cmd/5c/cgen.c
@@ -1,5 +1,7 @@
 #include "gc.h"
 
+static void genasop(int, Node*, Node*, Node*);
+
 void
 cgen(Node *n, Node *nn)
 {
@@ -54,7 +56,7 @@
 		cgen(r, &nod);
 
 		regsalloc(&nod1, r);
-		gopcode(OAS, &nod, Z, &nod1);
+		gmove(&nod, &nod1);
 
 		regfree(&nod);
 		nod = *n;
@@ -244,7 +246,7 @@
 				reglcgen(&nod2, l, Z);
 			else
 				nod2 = *l;
-			regalloc(&nod, r, nn);
+			regalloc(&nod, l, nn);
 			gopcode(OAS, &nod2, Z, &nod);
 			gopcode(o, r, Z, &nod);
 			gopcode(OAS, &nod, Z, &nod2);
@@ -254,6 +256,8 @@
 				regfree(&nod2);
 			break;
 		}
+		genasop(o, l, r, nn);
+		break;
 
 	case OASLMUL:
 	case OASLDIV:
@@ -263,32 +267,7 @@
 	case OASMOD:
 		if(l->op == OBIT)
 			goto asbitop;
-		if(l->complex >= r->complex) {
-			if(l->addable < INDEXED)
-				reglcgen(&nod2, l, Z);
-			else
-				nod2 = *l;
-			regalloc(&nod1, r, Z);
-			cgen(r, &nod1);
-		} else {
-			regalloc(&nod1, r, Z);
-			cgen(r, &nod1);
-			if(l->addable < INDEXED)
-				reglcgen(&nod2, l, Z);
-			else
-				nod2 = *l;
-		}
-
-		regalloc(&nod, n, nn);
-		gmove(&nod2, &nod);
-		gopcode(o, &nod1, Z, &nod);
-		gmove(&nod, &nod2);
-		if(nn != Z)
-			gopcode(OAS, &nod, Z, nn);
-		regfree(&nod);
-		regfree(&nod1);
-		if(l->addable < INDEXED)
-			regfree(&nod2);
+		genasop(o, l, r, nn);
 		break;
 
 	asbitop:
@@ -562,6 +541,43 @@
 	}
 	cursafe = curs;
 	return;
+}
+
+static void
+genasop(int o, Node *l, Node *r, Node *nn)
+{
+	Node nod, nod1, nod2;
+	int hardleft;
+
+	hardleft = l->addable < INDEXED || l->complex >= FNX;
+	if(l->complex >= r->complex) {
+		if(hardleft)
+			reglcgen(&nod2, l, Z);
+		else
+			nod2 = *l;
+		regalloc(&nod1, r, Z);
+		cgen(r, &nod1);
+	} else {
+		regalloc(&nod1, r, Z);
+		cgen(r, &nod1);
+		if(hardleft)
+			reglcgen(&nod2, l, Z);
+		else
+			nod2 = *l;
+	}
+	if(nod1.type == nod2.type || !typefd[nod1.type->etype])
+		regalloc(&nod, &nod2, nn);
+	else
+		regalloc(&nod, &nod1, Z);
+	gmove(&nod2, &nod);
+	gopcode(o, &nod1, Z, &nod);
+	gmove(&nod, &nod2);
+	if(nn != Z)
+		gmove(&nod, nn);
+	regfree(&nod);
+	regfree(&nod1);
+	if(hardleft)
+		regfree(&nod2);
 }
 
 void
--- a/sys/src/cmd/5c/txt.c
+++ b/sys/src/cmd/5c/txt.c
@@ -566,6 +566,9 @@
 
 	ft = f->type->etype;
 	tt = t->type->etype;
+	if(debug['M'])
+		print("gop: %O %O[%s],%O[%s]\n", OAS,
+			f->op, tnames[ft], t->op, tnames[tt]);
 
 	if(ft == TDOUBLE && f->op == OCONST) {
 	}