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-rw-r--r--ice40/pack.cc84
1 files changed, 43 insertions, 41 deletions
diff --git a/ice40/pack.cc b/ice40/pack.cc
index 51138a22..62b08534 100644
--- a/ice40/pack.cc
+++ b/ice40/pack.cc
@@ -21,7 +21,6 @@
#include <algorithm>
#include <iterator>
-#include <unordered_set>
#include "cells.h"
#include "chains.h"
#include "design_utils.h"
@@ -35,15 +34,16 @@ static void pack_lut_lutffs(Context *ctx)
{
log_info("Packing LUT-FFs..\n");
int lut_only = 0, lut_and_ff = 0;
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (ctx->verbose)
log_info("cell '%s' is of type '%s'\n", ci->name.c_str(ctx), ci->type.c_str(ctx));
if (is_lut(ctx, ci)) {
std::unique_ptr<CellInfo> packed = create_ice_cell(ctx, ctx->id("ICESTORM_LC"), ci->name.str(ctx) + "_LC");
- std::copy(ci->attrs.begin(), ci->attrs.end(), std::inserter(packed->attrs, packed->attrs.begin()));
+ for (auto &attr : ci->attrs)
+ packed->attrs[attr.first] = attr.second;
packed_cells.insert(ci->name);
if (ctx->verbose)
log_info("packed cell %s into %s\n", ci->name.c_str(ctx), packed->name.c_str(ctx));
@@ -99,16 +99,17 @@ static void pack_nonlut_ffs(Context *ctx)
{
log_info("Packing non-LUT FFs..\n");
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
int ff_only = 0;
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_ff(ctx, ci)) {
std::unique_ptr<CellInfo> packed =
create_ice_cell(ctx, ctx->id("ICESTORM_LC"), ci->name.str(ctx) + "_DFFLC");
- std::copy(ci->attrs.begin(), ci->attrs.end(), std::inserter(packed->attrs, packed->attrs.begin()));
+ for (auto &attr : ci->attrs)
+ packed->attrs[attr.first] = attr.second;
if (ctx->verbose)
log_info("packed cell %s into %s\n", ci->name.c_str(ctx), packed->name.c_str(ctx));
packed_cells.insert(ci->name);
@@ -142,13 +143,13 @@ static bool net_is_constant(const Context *ctx, NetInfo *net, bool &value)
static void pack_carries(Context *ctx)
{
log_info("Packing carries..\n");
- std::unordered_set<IdString> exhausted_cells;
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> exhausted_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
int carry_only = 0;
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_carry(ctx, ci)) {
packed_cells.insert(cell.first);
@@ -272,11 +273,11 @@ static void pack_ram(Context *ctx)
{
log_info("Packing RAMs..\n");
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_ram(ctx, ci)) {
std::unique_ptr<CellInfo> packed =
create_ice_cell(ctx, ctx->id("ICESTORM_RAM"), ci->name.str(ctx) + "_RAM");
@@ -379,8 +380,8 @@ static void pack_constants(Context *ctx)
bool gnd_used = false;
- for (auto net : sorted(ctx->nets)) {
- NetInfo *ni = net.second;
+ for (auto &net : ctx->nets) {
+ NetInfo *ni = net.second.get();
if (ni->driver.cell != nullptr && ni->driver.cell->type == ctx->id("GND")) {
IdString drv_cell = ni->driver.cell->name;
set_net_constant(ctx, ni, gnd_net_info, false);
@@ -464,13 +465,13 @@ static bool is_ice_iob(const Context *ctx, const CellInfo *cell)
// Pack IO buffers
static void pack_io(Context *ctx)
{
- std::unordered_set<IdString> packed_cells;
- std::unordered_set<IdString> delete_nets;
+ pool<IdString> packed_cells;
+ pool<IdString> delete_nets;
std::vector<std::unique_ptr<CellInfo>> new_cells;
log_info("Packing IOs..\n");
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_nextpnr_iob(ctx, ci)) {
CellInfo *sb = nullptr, *rgb = nullptr;
if (ci->type == ctx->id("$nextpnr_ibuf") || ci->type == ctx->id("$nextpnr_iobuf")) {
@@ -531,7 +532,8 @@ static void pack_io(Context *ctx)
for (auto port : ci->ports)
disconnect_port(ctx, ci, port.first);
packed_cells.insert(ci->name);
- std::copy(ci->attrs.begin(), ci->attrs.end(), std::inserter(sb->attrs, sb->attrs.begin()));
+ for (auto &attr : ci->attrs)
+ sb->attrs[attr.first] = attr.second;
} else if (is_sb_io(ctx, ci) || is_sb_gb_io(ctx, ci)) {
NetInfo *net = ci->ports.at(ctx->id("PACKAGE_PIN")).net;
if ((net != nullptr) && ((net->users.size() > 2) ||
@@ -541,8 +543,8 @@ static void pack_io(Context *ctx)
ci->name.c_str(ctx));
}
}
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_sb_gb_io(ctx, ci)) {
// If something is connecto the GLOBAL OUTPUT, create the fake 'matching' SB_GB
std::unique_ptr<CellInfo> gb =
@@ -637,8 +639,8 @@ static void promote_globals(Context *ctx)
const int enable_fanout_thresh = 15;
const int reset_fanout_thresh = 15;
std::map<IdString, int> clock_count, reset_count, cen_count, logic_count;
- for (auto net : sorted(ctx->nets)) {
- NetInfo *ni = net.second;
+ for (auto &net : ctx->nets) {
+ NetInfo *ni = net.second.get();
if (ni->driver.cell != nullptr && !ctx->is_global_net(ni)) {
clock_count[net.first] = 0;
reset_count[net.first] = 0;
@@ -778,8 +780,8 @@ static void place_plls(Context *ctx)
}
// Find all the PLLs cells we need to place and do pre-checks
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (!is_sb_pll40(ctx, ci))
continue;
@@ -861,8 +863,8 @@ static void place_plls(Context *ctx)
}
// Scan all SB_IOs to check for conflict with PLL BELs
- for (auto io_cell : sorted(ctx->cells)) {
- CellInfo *io_ci = io_cell.second;
+ for (auto &io_cell : ctx->cells) {
+ CellInfo *io_ci = io_cell.second.get();
if (!is_sb_io(ctx, io_ci))
continue;
@@ -899,8 +901,8 @@ static void place_plls(Context *ctx)
}
// Scan all SB_GBs to check for conflicts with PLL BELs
- for (auto gb_cell : sorted(ctx->cells)) {
- CellInfo *gb_ci = gb_cell.second;
+ for (auto &gb_cell : ctx->cells) {
+ CellInfo *gb_ci = gb_cell.second.get();
if (!is_gbuf(ctx, gb_ci))
continue;
@@ -1116,12 +1118,12 @@ static void pack_special(Context *ctx)
{
log_info("Packing special functions..\n");
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
// Handle LED_DRV_CUR first to set the ledCurConnected flag before RGB_DRV is handled below.
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_sb_led_drv_cur(ctx, ci)) {
/* Force placement (no choices anyway) */
cell_place_unique(ctx, ci);
@@ -1139,8 +1141,8 @@ static void pack_special(Context *ctx)
ctx->nets.erase(ledpu_net->name);
}
}
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_sb_lfosc(ctx, ci)) {
std::unique_ptr<CellInfo> packed =
create_ice_cell(ctx, ctx->id("ICESTORM_LFOSC"), ci->name.str(ctx) + "_OSC");
@@ -1296,10 +1298,10 @@ void pack_plls(Context *ctx)
{
log_info("Packing PLLs..\n");
- std::unordered_set<IdString> packed_cells;
+ pool<IdString> packed_cells;
std::vector<std::unique_ptr<CellInfo>> new_cells;
- for (auto cell : sorted(ctx->cells)) {
- CellInfo *ci = cell.second;
+ for (auto &cell : ctx->cells) {
+ CellInfo *ci = cell.second.get();
if (is_sb_pll40(ctx, ci)) {
bool is_pad = is_sb_pll40_pad(ctx, ci);
bool is_core = !is_pad;
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-14 09:20:44 +0000