From c5d28f5d6b20a42e6f3a4b1a4e3be341a352e5e3 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Sat, 4 Jan 2020 19:00:44 +0100
Subject: Valid to have attribute starting with SB_CARRY.
---
techlibs/ice40/ice40_opt.cc | 2 ++
1 file changed, 2 insertions(+)
(limited to 'techlibs')
diff --git a/techlibs/ice40/ice40_opt.cc b/techlibs/ice40/ice40_opt.cc
index 371ceb623..9bee0444b 100644
--- a/techlibs/ice40/ice40_opt.cc
+++ b/techlibs/ice40/ice40_opt.cc
@@ -128,6 +128,8 @@ static void run_ice40_opts(Module *module)
new_attr.insert(std::make_pair(a.first, a.second));
else if (a.first.in(ID(SB_LUT4.name), ID::keep, ID(module_not_derived)))
continue;
+ else if (a.first.begins_with("\\SB_CARRY.\\"))
+ continue;
else
log_abort();
cell->attributes = std::move(new_attr);
--
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