Merge pull request #163 from daveshah1/timing_opt

Adding criticality calculation and experimental timing optimisation pass

1 files changed, 3 insertions, 0 deletions

diff --git a/ice40/main.cc b/ice40/main.cc
index 4b6a9e42..543bd229 100644
--- a/ice40/main.cc
+++ b/ice40/main.cc
@@ -68,6 +68,7 @@ po::options_description Ice40CommandHandler::getArchOptions()
     specific.add_options()("promote-logic",
                            "enable promotion of 'logic' globals (in addition to clk/ce/sr by default)");
     specific.add_options()("no-promote-globals", "disable all global promotion");
+    specific.add_options()("opt-timing", "run post-placement timing optimisation pass (experimental)");
     specific.add_options()("tmfuzz", "run path delay estimate fuzzer");
     return specific;
 }
@@ -161,6 +162,8 @@ std::unique_ptr<Context> Ice40CommandHandler::createContext()
         ctx->settings[ctx->id("promote_logic")] = "1";
     if (vm.count("no-promote-globals"))
         ctx->settings[ctx->id("no_promote_globals")] = "1";
+    if (vm.count("opt-timing"))
+        ctx->settings[ctx->id("opt_timing")] = "1";
     return ctx;
 }