WIP: adding timing budget to placer

Signed-off-by: David Shah <davey1576@gmail.com>

2 files changed, 12 insertions, 4 deletions

diff --git a/common/place_sa.cc b/common/place_sa.cc
index 0a60adc8..485ddc88 100644
--- a/common/place_sa.cc
+++ b/common/place_sa.cc
@@ -314,7 +314,9 @@ class SAPlacer
                     load_cell->bel, ctx->portPinFromId(load.port));
             // wirelength += std::abs(load_x - driver_x) + std::abs(load_y -
             // driver_y);
-            wirelength += ctx->estimateDelay(drv_wire, user_wire);
+            delay_t raw_wl = ctx->estimateDelay(drv_wire, user_wire);
+            wirelength += 100 * (ctx->getDelayNS(raw_wl) / ctx->getDelayNS(load.budget));
+            // wirelength += pow(ctx->estimateDelay(drv_wire, user_wire), 2.0);
         }
         return wirelength;
     }
@@ -376,9 +378,8 @@ class SAPlacer
         delta = new_wirelength - curr_wirelength;
         n_move++;
         // SA acceptance criterea
-        if (delta < 0 ||
-            (temp > 1e-6 &&
-             (ctx->rng() / float(0x3fffffff)) <= std::exp(-delta / temp))) {
+        if (delta < 0 || (temp > 1e-6 && (ctx->rng() / float(0x3fffffff)) <=
+                                                 std::exp(-delta / temp))) {
             n_accept++;
             if (delta < 0)
                 improved = true;
diff --git a/common/timing.cc b/common/timing.cc
index a4bda3bb..8da26077 100644
--- a/common/timing.cc
+++ b/common/timing.cc
@@ -101,6 +101,8 @@ void assign_budget(Context *ctx, float default_clock)
             }
         }
     }
+    const bool debug = true;
+
     // Post-allocation check
     for (auto net : ctx->nets) {
         for (auto user : net.second->users) {
@@ -109,6 +111,11 @@ void assign_budget(Context *ctx, float default_clock)
                             "timing budget of %fns\n",
                             user.cell->name.c_str(ctx), user.port.c_str(ctx),
                             net.first.c_str(ctx), ctx->getDelayNS(user.budget));
+            if (debug)
+                log_warning("port %s.%s, connected to net '%s', has "
+                            "timing budget of %fns\n",
+                            user.cell->name.c_str(ctx), user.port.c_str(ctx),
+                            net.first.c_str(ctx), ctx->getDelayNS(user.budget));
         }
     }
 }