Add ctx->checksum(), slightly improve log messages

Signed-off-by: Clifford Wolf <clifford@clifford.at>

11 files changed, 171 insertions, 3 deletions

diff --git a/common/design_utils.cc b/common/design_utils.cc
index 535b6fda..fa914ee2 100644
--- a/common/design_utils.cc
+++ b/common/design_utils.cc
@@ -67,8 +67,10 @@ void print_utilisation(const Context *ctx)
     log_break();
     log_info("Device utilisation:\n");
     for (auto type : available_types) {
-        log_info("\t%20s: %5d/%5d\n", ctx->belTypeToId(type.first).c_str(ctx),
-                 get_or_default(used_types, type.first, 0), type.second);
+        IdString type_id = ctx->belTypeToId(type.first);
+        int used_bels = get_or_default(used_types, type.first, 0);
+        log_info("\t%20s: %5d/%5d %5d%%\n", type_id.c_str(ctx),
+                 used_bels, type.second, 100*used_bels/type.second);
     }
     log_break();
 }
diff --git a/common/nextpnr.cc b/common/nextpnr.cc
index b093d855..144da7c8 100644
--- a/common/nextpnr.cc
+++ b/common/nextpnr.cc
@@ -53,4 +53,127 @@ void IdString::initialize_add(const BaseCtx *ctx, const char *s, int idx)
     ctx->idstring_idx_to_str->push_back(&insert_rc.first->first);
 }
 
+static uint32_t xorshift32(uint32_t x)
+{
+    x ^= x << 13;
+    x ^= x >> 17;
+    x ^= x << 5;
+    return x;
+}
+
+uint32_t Context::checksum() const
+{
+    uint32_t cksum = xorshift32(123456789);
+
+    uint32_t cksum_nets_sum = 0;
+    for (auto &it : nets)
+    {
+        auto &ni = *it.second;
+        uint32_t x = 123456789;
+        x = xorshift32(x + xorshift32(it.first.index));
+        x = xorshift32(x + xorshift32(ni.name.index));
+        if (ni.driver.cell)
+            x = xorshift32(x + xorshift32(ni.driver.cell->name.index));
+        x = xorshift32(x + xorshift32(ni.driver.port.index));
+        x = xorshift32(x + xorshift32(getDelayChecksum(ni.driver.budget)));
+
+        for (auto &u : ni.users) {
+            if (u.cell)
+                x = xorshift32(x + xorshift32(u.cell->name.index));
+            x = xorshift32(x + xorshift32(u.port.index));
+            x = xorshift32(x + xorshift32(getDelayChecksum(u.budget)));
+        }
+
+        uint32_t attr_x_sum = 0;
+        for (auto &a : ni.attrs) {
+            uint32_t attr_x = 123456789;
+            attr_x = xorshift32(attr_x + xorshift32(a.first.index));
+            for (uint8_t ch : a.second)
+                attr_x = xorshift32(attr_x + xorshift32(ch));
+            attr_x_sum += attr_x;
+        }
+        x = xorshift32(x + xorshift32(attr_x_sum));
+
+        uint32_t wire_x_sum = 0;
+        for (auto &w : ni.wires) {
+            uint32_t wire_x = 123456789;
+            wire_x = xorshift32(wire_x + xorshift32(getWireChecksum(w.first)));
+            wire_x = xorshift32(wire_x + xorshift32(getPipChecksum(w.second)));
+            wire_x_sum += wire_x;
+        }
+        x = xorshift32(x + xorshift32(wire_x_sum));
+
+        uint32_t pip_x_sum = 0;
+        for (auto &p : ni.pips) {
+            uint32_t pip_x = 123456789;
+            pip_x = xorshift32(pip_x + xorshift32(getPipChecksum(p.first)));
+            pip_x = xorshift32(pip_x + xorshift32(p.second));
+            pip_x_sum += pip_x;
+        }
+        x = xorshift32(x + xorshift32(pip_x_sum));
+
+        cksum_nets_sum += x;
+    }
+    cksum = xorshift32(cksum + xorshift32(cksum_nets_sum));
+
+    uint32_t cksum_cells_sum = 0;
+    for (auto &it : cells)
+    {
+        auto &ci = *it.second;
+        uint32_t x = 123456789;
+        x = xorshift32(x + xorshift32(it.first.index));
+        x = xorshift32(x + xorshift32(ci.name.index));
+        x = xorshift32(x + xorshift32(ci.type.index));
+
+        uint32_t port_x_sum = 0;
+        for (auto &p : ci.ports) {
+            uint32_t port_x = 123456789;
+            port_x = xorshift32(port_x + xorshift32(p.first.index));
+            port_x = xorshift32(port_x + xorshift32(p.second.name.index));
+            if (p.second.net)
+                port_x = xorshift32(port_x + xorshift32(p.second.net->name.index));
+            port_x = xorshift32(port_x + xorshift32(p.second.type));
+            port_x_sum += port_x;
+        }
+        x = xorshift32(x + xorshift32(port_x_sum));
+
+        uint32_t attr_x_sum = 0;
+        for (auto &a : ci.attrs) {
+            uint32_t attr_x = 123456789;
+            attr_x = xorshift32(attr_x + xorshift32(a.first.index));
+            for (uint8_t ch : a.second)
+                attr_x = xorshift32(attr_x + xorshift32(ch));
+            attr_x_sum += attr_x;
+        }
+        x = xorshift32(x + xorshift32(attr_x_sum));
+
+        uint32_t param_x_sum = 0;
+        for (auto &p : ci.params) {
+            uint32_t param_x = 123456789;
+            param_x = xorshift32(param_x + xorshift32(p.first.index));
+            for (uint8_t ch : p.second)
+                param_x = xorshift32(param_x + xorshift32(ch));
+            param_x_sum += param_x;
+        }
+        x = xorshift32(x + xorshift32(param_x_sum));
+
+        x = xorshift32(x + xorshift32(getBelChecksum(ci.bel)));
+        x = xorshift32(x + xorshift32(ci.belStrength));
+
+        uint32_t pin_x_sum = 0;
+        for (auto &a : ci.pins) {
+            uint32_t pin_x = 123456789;
+            pin_x = xorshift32(pin_x + xorshift32(a.first.index));
+            pin_x = xorshift32(pin_x + xorshift32(a.second.index));
+            pin_x_sum += pin_x;
+        }
+        x = xorshift32(x + xorshift32(pin_x_sum));
+
+        cksum_cells_sum += x;
+    }
+    cksum = xorshift32(cksum + xorshift32(cksum_cells_sum));
+
+    return cksum;
+}
+
 NEXTPNR_NAMESPACE_END
diff --git a/common/nextpnr.h b/common/nextpnr.h
index db6901fe..e52f72c2 100644
--- a/common/nextpnr.h
+++ b/common/nextpnr.h
@@ -302,10 +302,14 @@ struct Context : Arch
     {
         // xorshift64star
         // https://arxiv.org/abs/1402.6246
+
+        uint64_t retval = rngstate * 0x2545F4914F6CDD1D;
+
         rngstate ^= rngstate >> 12;
         rngstate ^= rngstate << 25;
         rngstate ^= rngstate >> 27;
-        return rngstate * 0x2545F4914F6CDD1D;
+
+        return retval;
     }
 
     int rng() { return rng64() & 0x3fffffff; }
@@ -351,6 +355,8 @@ struct Context : Arch
         std::sort(a.begin(), a.end());
         shuffle(a);
     }
+
+    uint32_t checksum() const;
 };
 
 NEXTPNR_NAMESPACE_END
diff --git a/common/place_sa.cc b/common/place_sa.cc
index 591766aa..4d0d5d08 100644
--- a/common/place_sa.cc
+++ b/common/place_sa.cc
@@ -480,6 +480,7 @@ bool place_design_sa(Context *ctx)
 {
     SAPlacer placer(ctx);
     placer.place();
+    log_info("Checksum: 0x%08x\n", ctx->checksum());
     return true;
 }
 
diff --git a/common/route.cc b/common/route.cc
index bf11b7d2..69a314d7 100644
--- a/common/route.cc
+++ b/common/route.cc
@@ -480,6 +480,7 @@ bool route_design(Context *ctx)
     while (!netsQueue.empty()) {
         if (iterCnt == 200) {
             log_warning("giving up after %d iterations.\n", iterCnt);
+            log_info("Checksum: 0x%08x\n", ctx->checksum());
             return false;
         }
 
@@ -616,6 +617,7 @@ bool route_design(Context *ctx)
     }
 
     log_info("routing complete after %d iterations.\n", iterCnt);
+    log_info("Checksum: 0x%08x\n", ctx->checksum());
     return true;
 }
 
diff --git a/common/timing.cc b/common/timing.cc
index a7b37f9d..ac116711 100644
--- a/common/timing.cc
+++ b/common/timing.cc
@@ -78,6 +78,7 @@ static delay_t follow_net(Context *ctx, NetInfo *net, int path_length,
 
 void assign_budget(Context *ctx, float default_clock)
 {
+    log_break();
     log_info("Annotating ports with timing budgets\n");
     // Clear delays to a very high value first
     delay_t default_slack = delay_t(1.0e12 / default_clock);
@@ -117,6 +118,8 @@ void assign_budget(Context *ctx, float default_clock)
                          net.first.c_str(ctx), ctx->getDelayNS(user.budget));
         }
     }
+
+    log_info("Checksum: 0x%08x\n", ctx->checksum());
 }
 
 NEXTPNR_NAMESPACE_END
diff --git a/dummy/arch.cc b/dummy/arch.cc
index 103eee4d..fa9ca473 100644
--- a/dummy/arch.cc
+++ b/dummy/arch.cc
@@ -34,6 +34,8 @@ BelId Arch::getBelByName(IdString name) const { return BelId(); }
 
 IdString Arch::getBelName(BelId bel) const { return IdString(); }
 
+uint32_t Arch::getBelChecksum(BelId bel) const { return 0; }
+
 void Arch::bindBel(BelId bel, IdString cell) {}
 
 void Arch::unbindBel(BelId bel) {}
@@ -75,6 +77,8 @@ WireId Arch::getWireByName(IdString name) const { return WireId(); }
 
 IdString Arch::getWireName(WireId wire) const { return IdString(); }
 
+uint32_t Arch::getWireChecksum(WireId wire) const { return 0; }
+
 void Arch::bindWire(WireId wire, IdString net) {}
 
 void Arch::unbindWire(WireId wire) {}
@@ -98,6 +102,8 @@ PipId Arch::getPipByName(IdString name) const { return PipId(); }
 
 IdString Arch::getPipName(PipId pip) const { return IdString(); }
 
+uint32_t Arch::getWireChecksum(WireId wire) const { return 0; }
+
 void Arch::bindPip(PipId pip, IdString net) {}
 
 void Arch::unbindPip(PipId pip) {}
diff --git a/dummy/arch.h b/dummy/arch.h
index 929c172a..d8068b22 100644
--- a/dummy/arch.h
+++ b/dummy/arch.h
@@ -87,6 +87,7 @@ struct Arch : BaseCtx
 
     BelId getBelByName(IdString name) const;
     IdString getBelName(BelId bel) const;
+    uint32_t getBelChecksum(BelId bel) const;
     void bindBel(BelId bel, IdString cell);
     void unbindBel(BelId bel);
     bool checkBelAvail(BelId bel) const;
@@ -100,6 +101,7 @@ struct Arch : BaseCtx
 
     WireId getWireByName(IdString name) const;
     IdString getWireName(WireId wire) const;
+    uint32_t getWireChecksum(WireId wire) const;
     void bindWire(WireId wire, IdString net);
     void unbindWire(WireId wire);
     bool checkWireAvail(WireId wire) const;
@@ -108,6 +110,7 @@ struct Arch : BaseCtx
 
     PipId getPipByName(IdString name) const;
     IdString getPipName(PipId pip) const;
+    uint32_t getPipChecksum(PipId pip) const;
     void bindPip(PipId pip, IdString net);
     void unbindPip(PipId pip);
     bool checkPipAvail(PipId pip) const;
@@ -125,6 +128,7 @@ struct Arch : BaseCtx
     delay_t getDelayEpsilon() const { return 0.01; }
     delay_t getRipupDelayPenalty() const { return 1.0; }
     float getDelayNS(delay_t v) const { return v; }
+    uint32_t getDelayChecksum(delay_t v) const { return 0; }
 
     std::vector<GraphicElement> getFrameGraphics() const;
     std::vector<GraphicElement> getBelGraphics(BelId bel) const;
diff --git a/frontend/json/jsonparse.cc b/frontend/json/jsonparse.cc
index 32ae0953..277e602a 100644
--- a/frontend/json/jsonparse.cc
+++ b/frontend/json/jsonparse.cc
@@ -828,6 +828,9 @@ void parse_json_file(std::istream *&f, std::string &filename, Context *ctx)
 {
     auto *parser = new JsonParser::JsonFrontend();
     parser->execute(f, filename, ctx);
+
+    log_info("Checksum: 0x%08x\n", ctx->checksum());
+    log_break();
 }
 
 NEXTPNR_NAMESPACE_END
diff --git a/ice40/arch.h b/ice40/arch.h
index 4896736b..7778e1c5 100644
--- a/ice40/arch.h
+++ b/ice40/arch.h
@@ -515,6 +515,11 @@ struct Arch : BaseCtx
         return id(chip_info->bel_data[bel.index].name.get());
     }
 
+    uint32_t getBelChecksum(BelId bel) const
+    {
+        return bel.index;
+    }
+
     void bindBel(BelId bel, IdString cell)
     {
         assert(bel != BelId());
@@ -607,6 +612,11 @@ struct Arch : BaseCtx
         return id(chip_info->wire_data[wire.index].name.get());
     }
 
+    uint32_t getWireChecksum(WireId wire) const
+    {
+        return wire.index;
+    }
+
     void bindWire(WireId wire, IdString net)
     {
         assert(wire != WireId());
@@ -646,6 +656,11 @@ struct Arch : BaseCtx
     PipId getPipByName(IdString name) const;
     IdString getPipName(PipId pip) const;
 
+    uint32_t getPipChecksum(PipId pip) const
+    {
+        return pip.index;
+    }
+
     void bindPip(PipId pip, IdString net)
     {
         assert(pip != PipId());
@@ -758,6 +773,7 @@ struct Arch : BaseCtx
     delay_t getDelayEpsilon() const { return 20; }
     delay_t getRipupDelayPenalty() const { return 200; }
     float getDelayNS(delay_t v) const { return v * 0.001; }
+    uint32_t getDelayChecksum(delay_t v) const { return v; }
 
     // -------------------------------------------------
 
diff --git a/ice40/pack.cc b/ice40/pack.cc
index 8a6f1c45..7fcf2750 100644
--- a/ice40/pack.cc
+++ b/ice40/pack.cc
@@ -487,12 +487,14 @@ static void promote_globals(Context *ctx)
 // Main pack function
 bool pack_design(Context *ctx)
 {
+    log_break();
     pack_constants(ctx);
     promote_globals(ctx);
     pack_io(ctx);
     pack_lut_lutffs(ctx);
     pack_nonlut_ffs(ctx);
     pack_ram(ctx);
+    log_info("Checksum: 0x%08x\n", ctx->checksum());
     return true;
 }