code gen error for

	lv += f()
fixes asn1 and maybe more

R=rsc
CC=golang-dev
https://golang.org/cl/2341042

diff --git a/src/cmd/5g/ggen.c b/src/cmd/5g/ggen.c
index 77d4e9496f1ba7786991dac818070e32575536aa..55f61694653590a722858b62ed7ace6242e1de6c 100644 (file)
--- a/src/cmd/5g/ggen.c
+++ b/src/cmd/5g/ggen.c
@@ -446,10 +446,10 @@ cgen_asop(Node *n)
        case OOR:
                a = optoas(n->etype, nl->type);
                if(nl->addable) {
-                       regalloc(&n2, nl->type, N);
                        regalloc(&n3, nr->type, N);
-                       cgen(nl, &n2);
                        cgen(nr, &n3);
+                       regalloc(&n2, nl->type, N);
+                       cgen(nl, &n2);
                        gins(a, &n3, &n2);
                        cgen(&n2, nl);
                        regfree(&n2);
@@ -459,9 +459,9 @@ cgen_asop(Node *n)
                if(nr->ullman < UINF)
                if(sudoaddable(a, nl, &addr, &w)) {
                        regalloc(&n2, nl->type, N);
-                       regalloc(&n3, nr->type, N);
                        p1 = gins(AMOVW, N, &n2);
                        p1->from = addr;
+                       regalloc(&n3, nr->type, N);
                        cgen(nr, &n3);
                        gins(a, &n3, &n2);
                        p1 = gins(AMOVW, &n2, N);