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-rw-r--r--passes/opt/opt.cc8
1 files changed, 6 insertions, 2 deletions
diff --git a/passes/opt/opt.cc b/passes/opt/opt.cc
index 53c27e0f5..8d259f34d 100644
--- a/passes/opt/opt.cc
+++ b/passes/opt/opt.cc
@@ -31,7 +31,7 @@ struct OptPass : public Pass {
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
- log(" opt [-mux_undef] [-mux_bool] [selection]\n");
+ log(" opt [-mux_undef] [-mux_bool] [-undriven] [selection]\n");
log("\n");
log("This pass calls all the other opt_* passes in a useful order. This performs\n");
log("a series of trivial optimizations and cleanups. This pass executes the other\n");
@@ -46,7 +46,7 @@ struct OptPass : public Pass {
log(" opt_share\n");
log(" opt_rmdff\n");
log(" opt_clean\n");
- log(" opt_const [-mux_undef] [-mux_bool]\n");
+ log(" opt_const [-mux_undef] [-mux_bool] [-undriven]\n");
log(" while [changed design]\n");
log("\n");
}
@@ -67,6 +67,10 @@ struct OptPass : public Pass {
opt_const_args += " -mux_bool";
continue;
}
+ if (args[argidx] == "-undriven") {
+ opt_const_args += " -undriven";
+ continue;
+ }
break;
}
extra_args(args, argidx, design);