ecp5: Use an attribute to store is_global

Signed-off-by: David Shah <dave@ds0.me>

1 files changed, 6 insertions, 2 deletions

diff --git a/ecp5/pack.cc b/ecp5/pack.cc
index 5b924759..20130aad 100644
--- a/ecp5/pack.cc
+++ b/ecp5/pack.cc
@@ -1508,7 +1508,8 @@ class Ecp5Packer
 
                 std::unique_ptr<NetInfo> promoted_ecknet(new NetInfo);
                 promoted_ecknet->name = eckname;
-                promoted_ecknet->is_global = true; // Prevents router etc touching this special net
+                promoted_ecknet->attrs[ctx->id("ECP5_IS_GLOBAL")] =
+                        "1"; // Prevents router etc touching this special net
                 eclk.buf = promoted_ecknet.get();
                 NPNR_ASSERT(!ctx->nets.count(eckname));
                 ctx->nets[eckname] = std::move(promoted_ecknet);
@@ -1654,7 +1655,7 @@ class Ecp5Packer
                                       port.c_str(ctx), ci->name.c_str(ctx), usr.port.c_str(ctx),
                                       usr.cell->name.c_str(ctx));
                     }
-                    pn->is_global = true;
+                    pn->attrs[ctx->id("ECP5_IS_GLOBAL")] = "1";
                 }
 
                 for (auto zport :
@@ -2470,6 +2471,9 @@ void Arch::assignArchInfo()
                 ci->sliceInfo.has_l6mux = true;
         }
     }
+    for (auto net : sorted(nets)) {
+        net.second->is_global = bool_or_default(net.second->attrs, id("ECP5_IS_GLOBAL"));
+    }
 }
 
 NEXTPNR_NAMESPACE_END