Revert "synth_xilinx to call "synth -run coarse" with "-keepdc""

This reverts commit 7f964859ec99500e471853f5914b6e5b7c35a031.

diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index 2a77ce39740a8e0d2a05ae8dc404b2b68468e3e3..8da6df57ed8c03fd15229639925607215d675d59 100644 (file)
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -240,9 +240,9 @@ struct SynthXilinxPass : public ScriptPass
 
                if (check_label("coarse")) {
                        if (help_mode)
-                               run("synth -keepdc -run coarse [-flatten]", "(with '-flatten')");
+                               run("synth -run coarse [-flatten]", "(with '-flatten')");
                        else
-                               run("synth -keepdc -run coarse" + std::string(flatten ? "" : " -flatten"), "(with '-flatten')");
+                               run("synth -run coarse" + std::string(flatten ? "" : " -flatten"), "(with '-flatten')");
 
                        if (widemux > 0 || help_mode)
                                run("muxpack", "    ('-widemux' only)");