From ce08c3053c8c25a5ee5c81ac6ebf583adfdef1ef Mon Sep 17 00:00:00 2001
From: myrtle <gatecat@ds0.me>
Date: Mon, 20 Apr 2026 16:19:00 +0200
Subject: [PATCH] Remove unused --slack_redist_iter option (#1704)

Signed-off-by: gatecat <gatecat@ds0.me>
---
 common/kernel/command.cc | 14 --------------
 common/place/placer1.cc  |  1 -
 common/place/placer1.h   |  1 -
 3 files changed, 16 deletions(-)

diff --git a/common/kernel/command.cc b/common/kernel/command.cc
index d78dd944..a7f46741 100644
--- a/common/kernel/command.cc
+++ b/common/kernel/command.cc
@@ -358,7 +358,6 @@ po::options_description CommandHandler::getGeneralOptions()
                         "; default: " + Arch::defaultRouter)
                     .c_str());
 
-    general.add_options()("slack_redist_iter", po::value<int>(), "number of iterations between slack redistribution");
     general.add_options()("cstrweight", po::value<float>(), "placer weighting for relative constraint satisfaction");
     general.add_options()("starttemp", po::value<float>(), "placer SA start temperature");
 
@@ -465,17 +464,6 @@ void CommandHandler::setupContext(Context *ctx)
         log_info("Generated random seed: %" PRIu64 "\n", seed);
     }
 
-    if (vm.count("slack_redist_iter")) {
-        ctx->settings[ctx->id("slack_redist_iter")] = vm["slack_redist_iter"].as<int>();
-        if (vm.count("freq") && vm["freq"].as<double>() == 0) {
-            ctx->settings[ctx->id("auto_freq")] = true;
-#ifndef NO_GUI
-            if (!vm.count("gui"))
-#endif
-                log_warning("Target frequency not specified. Will optimise for max frequency.\n");
-        }
-    }
-
     if (vm.count("ignore-loops")) {
         ctx->settings[ctx->id("timing/ignoreLoops")] = true;
     }
@@ -560,8 +548,6 @@ void CommandHandler::setupContext(Context *ctx)
         ctx->settings[ctx->id("target_freq")] = std::to_string(12e6);
     if (ctx->settings.find(ctx->id("timing_driven")) == ctx->settings.end())
         ctx->settings[ctx->id("timing_driven")] = true;
-    if (ctx->settings.find(ctx->id("slack_redist_iter")) == ctx->settings.end())
-        ctx->settings[ctx->id("slack_redist_iter")] = 0;
     if (ctx->settings.find(ctx->id("auto_freq")) == ctx->settings.end())
         ctx->settings[ctx->id("auto_freq")] = false;
     if (ctx->settings.find(ctx->id("placer")) == ctx->settings.end())
diff --git a/common/place/placer1.cc b/common/place/placer1.cc
index ddd5090c..ea19f9c8 100644
--- a/common/place/placer1.cc
+++ b/common/place/placer1.cc
@@ -1238,7 +1238,6 @@ Placer1Cfg::Placer1Cfg(Context *ctx)
     startTemp = ctx->setting<float>("placer1/startTemp", 1);
     timingFanoutThresh = std::numeric_limits<int>::max();
     timing_driven = ctx->setting<bool>("timing_driven");
-    slack_redist_iter = ctx->setting<int>("slack_redist_iter");
     hpwl_scale_x = 1;
     hpwl_scale_y = 1;
 }
diff --git a/common/place/placer1.h b/common/place/placer1.h
index 7b65a1a5..1ec3991e 100644
--- a/common/place/placer1.h
+++ b/common/place/placer1.h
@@ -32,7 +32,6 @@ struct Placer1Cfg
     float startTemp;
     int timingFanoutThresh;
     bool timing_driven;
-    int slack_redist_iter;
     int hpwl_scale_x, hpwl_scale_y;
 };