Generalize send/recv to work for more types

src/comp/middle/trans.rs

@@ -4790,17 +4790,19 @@ fn trans_send(@block_ctxt cx, @ast.expr lhs, @ast.expr rhs,
         }
     }
 
-    auto llunit_ty = type_of(bcx.fcx.ccx, unit_ty);
-    auto data_alloca = bcx.build.Alloca(llunit_ty);
-    bcx.build.Store(data.val, data_alloca);
+    auto data_alloc = alloc_ty(bcx, unit_ty);
+    bcx = data_alloc.bcx;
+    auto data_tmp = copy_ty(bcx, INIT, data_alloc.val, data.val, unit_ty);
+    bcx = data_tmp.bcx;
 
-    auto chn_val = vp2i(bcx, chn.val);
-    auto data_val = vp2i(bcx, data_alloca);
+    // TODO: Cleanups?
 
-    auto sub = trans_upcall(bcx, "upcall_send", vec(chn_val, data_val));
+    auto sub = trans_upcall(bcx, "upcall_send",
+                            vec(vp2i(bcx, chn.val),
+                                vp2i(bcx, data_alloc.val)));
     bcx = sub.bcx;
 
-    ret res(bcx, chn_val);
+    ret res(bcx, chn.val);
 }
 
 fn trans_recv(@block_ctxt cx, @ast.expr lhs, @ast.expr rhs,
@@ -4813,17 +4815,19 @@ fn trans_recv(@block_ctxt cx, @ast.expr lhs, @ast.expr rhs,
     auto prt = trans_expr(bcx, rhs);
     bcx = prt.bcx;
 
-    auto unit_ty = node_ann_type(cx.fcx.ccx, ann);
-    auto llunit_ty = type_of(bcx.fcx.ccx, unit_ty);
-    auto data_alloca = bcx.build.Alloca(llunit_ty);
-
-    auto data_val = vp2i(bcx, data_alloca);
-    auto prt_val = vp2i(bcx, prt.val);
-    auto sub = trans_upcall(bcx, "upcall_recv", vec(data_val, prt_val));
+    auto sub = trans_upcall(bcx, "upcall_recv",
+                            vec(vp2i(bcx, data.res.val),
+                                vp2i(bcx, prt.val)));
     bcx = sub.bcx;
 
-    auto data_load = bcx.build.Load(data_alloca);
-    ret copy_ty(bcx, DROP_EXISTING, data.res.val, data_load, unit_ty);
+    auto unit_ty = node_ann_type(cx.fcx.ccx, ann);
+    auto data_load = load_scalar_or_boxed(bcx, data.res.val, unit_ty);
+    auto cp = copy_ty(bcx, DROP_EXISTING, data.res.val, data_load, unit_ty);
+    bcx = cp.bcx;
+
+    // TODO: Cleanups?
+
+    ret res(bcx, data.res.val);
 }
 
 fn init_local(@block_ctxt cx, @ast.local local) -> result {

src/test/run-pass/task-comm-16.rs

@@ -0,0 +1,105 @@
+// -*- rust -*-
+
+// Tests of ports and channels on various types
+
+impure fn test_rec() {
+  type r = rec(int val0, u8 val1, char val2);
+
+  let port[r] po = port();
+  let chan[r] ch = chan(po);
+  let r r0 = rec(val0 = 0, val1 = 1u8, val2 = '2');
+
+  ch <| r0;
+
+  let r r1;
+  r1 <- po;
+
+  check (r1.val0 == 0);
+  check (r1.val1 == 1u8);
+  check (r1.val2 == '2');
+}
+
+impure fn test_vec() {
+  let port[vec[int]] po = port();
+  let chan[vec[int]] ch = chan(po);
+  let vec[int] v0 = vec(0, 1, 2);
+
+  ch <| v0;
+
+  let vec[int] v1;
+  v1 <- po;
+
+  check (v1.(0) == 0);
+  check (v1.(1) == 1);
+  check (v1.(2) == 2);
+}
+
+impure fn test_tup() {
+  type t = tup(int, u8, char);
+
+  let port[t] po = port();
+  let chan[t] ch = chan(po);
+  let t t0 = tup(0, 1u8, '2');
+
+  ch <| t0;
+
+  let t t1;
+  t1 <- po;
+
+  check (t0._0 == 0);
+  check (t0._1 == 1u8);
+  check (t0._2 == '2');
+}
+
+impure fn test_tag() {
+  tag t {
+    tag1;
+    tag2(int);
+    tag3(int, u8, char);
+  }
+
+  let port[t] po = port();
+  let chan[t] ch = chan(po);
+
+  ch <| tag1;
+  ch <| tag2(10);
+  ch <| tag3(10, 11u8, 'A');
+
+  let t t1;
+
+  t1 <- po;
+  check (t1 == tag1);
+  t1 <- po;
+  check (t1 == tag2(10));
+  t1 <- po;
+  check (t1 == tag3(10, 11u8, 'A'));
+}
+
+impure fn test_chan() {
+  let port[chan[int]] po = port();
+  let chan[chan[int]] ch = chan(po);
+
+  let port[int] po0 = port();
+  let chan[int] ch0 = chan(po0);
+
+  ch <| ch0;
+
+  let chan[int] ch1;
+  ch1 <- po;
+
+  // Does the transmitted channel still work?
+  ch1 <| 10;
+
+  let int i;
+  i <- po0;
+
+  check (i == 10);
+}
+
+impure fn main() {
+  test_rec();
+  test_vec();
+  test_tup();
+  test_tag();
+  test_chan();
+}