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Align the function arguments properly in calls.

--- a/6/isel.c

+++ b/6/isel.c

@@ -382,8 +382,10 @@

      * Not good.

      *

      * We skip the first operand, since it's the function itself */

-    for (i = 1; i < n->expr.nargs; i++)

+    for (i = 1; i < n->expr.nargs; i++) {

+        argsz = align(argsz, min(size(n->expr.args[i]), Ptrsz));

         argsz += size(n->expr.args[i]);

+    }

     stkbump = loclit(argsz, ModeQ);

     if (argsz)

         g(s, Isub, stkbump, rsp, NULL);

@@ -392,6 +394,7 @@

     argoff = 0;

     for (i = 1; i < n->expr.nargs; i++) {

         arg = selexpr(s, n->expr.args[i]);

+        argoff = align(argoff, min(size(n->expr.args[i]), Ptrsz));

         if (stacknode(n->expr.args[i])) {

             dst = locreg(ModeQ);

             src = locreg(ModeQ);

-- 

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