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timing_opt: Make an optional pass controlled by command line

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2018-12-02 14:08:11 +00:00
parent 0f40e5fe8c
commit f3adf5a576
2 changed files with 11 additions and 3 deletions
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5
ice40/arch.cc
View File

@ -631,9 +631,14 @@ bool Arch::place()
{
if (!placer1(getCtx(), Placer1Cfg(getCtx())))
return false;
if(bool_or_default(settings, id("opt_timing"), false)) {
TimingOptCfg tocfg(getCtx());
tocfg.cellTypes.insert(id_ICESTORM_LC);
return timing_opt(getCtx(), tocfg);
} else {
return true;
}
}
bool Arch::route() { return router1(getCtx(), Router1Cfg(getCtx())); }

3
ice40/main.cc
View File

@ -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;
}