From 819f1d8c20e07da66122292b90603867b78ff2d2 Mon Sep 17 00:00:00 2001
From: Keith Rothman <537074+litghost@users.noreply.github.com>
Date: Mon, 19 Aug 2019 08:42:09 -0700
Subject: Remove EXPLICIT_CARRY logic.

The symbiflow-arch-defs tool chain no longer needs the EXPLICIT_CARRY
within yosys itself.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
---
 techlibs/xilinx/cells_sim.v | 23 -----------------------
 1 file changed, 23 deletions(-)

(limited to 'techlibs/xilinx/cells_sim.v')

diff --git a/techlibs/xilinx/cells_sim.v b/techlibs/xilinx/cells_sim.v
index f5850d8a2..a04587e87 100644
--- a/techlibs/xilinx/cells_sim.v
+++ b/techlibs/xilinx/cells_sim.v
@@ -455,29 +455,6 @@ module CARRY8(
   assign CO[7] = S[7] ? CO[6] : DI[7];
 endmodule
 
-`ifdef _EXPLICIT_CARRY
-
-module CARRY0(output CO_CHAIN, CO_FABRIC, O, input CI, CI_INIT, DI, S);
-  parameter CYINIT_FABRIC = 0;
-  wire CI_COMBINE;
-  if(CYINIT_FABRIC) begin
-    assign CI_COMBINE = CI_INIT;
-  end else begin
-    assign CI_COMBINE = CI;
-  end
-  assign CO_CHAIN = S ? CI_COMBINE : DI;
-  assign CO_FABRIC = S ? CI_COMBINE : DI;
-  assign O = S ^ CI_COMBINE;
-endmodule
-
-module CARRY(output CO_CHAIN, CO_FABRIC, O, input CI, DI, S);
-  assign CO_CHAIN = S ? CI : DI;
-  assign CO_FABRIC = S ? CI : DI;
-  assign O = S ^ CI;
-endmodule
-
-`endif
-
 module ORCY (output O, input CI, I);
   assign O = CI | I;
 endmodule
-- 
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