From d81a090d89d87837d3e18f9c724fe5c89ddf1f64 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Mon, 19 Aug 2019 09:56:17 -0700
Subject: Unify abc_carry_{in,out} into abc_carry and use port dir, as @mithro

---
 passes/techmap/abc9.cc      | 12 ++++++------
 techlibs/ecp5/cells_sim.v   |  4 ++--
 techlibs/ice40/cells_sim.v  |  4 ++--
 techlibs/xilinx/cells_sim.v |  4 ++--
 4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index 4cdd392b5..3768786d4 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -1088,25 +1088,25 @@ struct Abc9Pass : public Pass {
 				if (w->port_input) {
 					if (w->attributes.count(ID(abc_scc_break)))
 						scc_break_inputs[m->name].insert(p);
-					if (w->attributes.count(ID(abc_carry_in))) {
+					if (w->attributes.count(ID(abc_carry))) {
 						if (carry_in)
-							log_error("Module '%s' contains more than one 'abc_carry_in' port.\n", log_id(m));
+							log_error("Module '%s' contains more than one 'abc_carry' input port.\n", log_id(m));
 						carry_in = w;
 					}
 				}
 				if (w->port_output) {
-					if (w->attributes.count(ID(abc_carry_out))) {
+					if (w->attributes.count(ID(abc_carry))) {
 						if (carry_out)
-							log_error("Module '%s' contains more than one 'abc_carry_out' port.\n", log_id(m));
+							log_error("Module '%s' contains more than one 'abc_carry' input port.\n", log_id(m));
 						carry_out = w;
 					}
 				}
 			}
 			if (carry_in || carry_out) {
 				if (carry_in && !carry_out)
-					log_error("Module '%s' contains an 'abc_carry_in' port but no 'abc_carry_out' port.\n", log_id(m));
+					log_error("Module '%s' contains an 'abc_carry' input port but no output port.\n", log_id(m));
 				if (!carry_in && carry_out)
-					log_error("Module '%s' contains an 'abc_carry_out' port but no 'abc_carry_in' port.\n", log_id(m));
+					log_error("Module '%s' contains an 'abc_carry' output port but no input port.\n", log_id(m));
 				// Make carry_in the last PI, and carry_out the last PO
 				//   since ABC requires it this way
 				auto &ports = m->ports;
diff --git a/techlibs/ecp5/cells_sim.v b/techlibs/ecp5/cells_sim.v
index 864a3550f..2fcb0369e 100644
--- a/techlibs/ecp5/cells_sim.v
+++ b/techlibs/ecp5/cells_sim.v
@@ -17,10 +17,10 @@ endmodule
 // ---------------------------------------
 (* abc_box_id=1, lib_whitebox *)
 module CCU2C(
-	(* abc_carry_in *) input CIN,
+	(* abc_carry *) input CIN,
 	input  A0, B0, C0, D0, A1, B1, C1, D1,
 	output S0, S1,
-	(* abc_carry_out *) output COUT
+	(* abc_carry *) output COUT
 );
 	parameter [15:0] INIT0 = 16'h0000;
 	parameter [15:0] INIT1 = 16'h0000;
diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v
index 5b18fec27..ab04808f4 100644
--- a/techlibs/ice40/cells_sim.v
+++ b/techlibs/ice40/cells_sim.v
@@ -143,11 +143,11 @@ endmodule
 
 (* abc_box_id = 1, lib_whitebox *)
 module \$__ICE40_FULL_ADDER (
-	(* abc_carry_out *) output CO,
+	(* abc_carry *) output CO,
 	output O,
 	input A,
 	input B,
-	(* abc_carry_in *) input CI
+	(* abc_carry *) input CI
 );
 	SB_CARRY carry (
 		.I0(A),
diff --git a/techlibs/xilinx/cells_sim.v b/techlibs/xilinx/cells_sim.v
index 910d0e246..bec9ea1a0 100644
--- a/techlibs/xilinx/cells_sim.v
+++ b/techlibs/xilinx/cells_sim.v
@@ -183,9 +183,9 @@ endmodule
 
 (* abc_box_id = 4, lib_whitebox *)
 module CARRY4(
-  (* abc_carry_out *) output [3:0] CO,
+  (* abc_carry *) output [3:0] CO,
   output [3:0] O,
-  (* abc_carry_in *) input CI,
+  (* abc_carry *) input CI,
   input        CYINIT,
   input  [3:0] DI, S
 );
-- 
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