passes/memory/memory_collect.cc

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2012  Claire Xenia Wolf <claire@yosyshq.com>
   5  *
   6  *  Permission to use, copy, modify, and/or distribute this software for any
   7  *  purpose with or without fee is hereby granted, provided that the above
   8  *  copyright notice and this permission notice appear in all copies.
   9  *
  10  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 #include "kernel/yosys.h"
  21 #include "kernel/mem.h"
  22
  23 USING_YOSYS_NAMESPACE
  24 PRIVATE_NAMESPACE_BEGIN
  25
  26 struct MemoryCollectPass : public Pass {
  27         MemoryCollectPass() : Pass("memory_collect", "creating multi-port memory cells") { }
  28         void help() override
  29         {
  30                 //   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
  31                 log("\n");
  32                 log("    memory_collect [selection]\n");
  33                 log("\n");
  34                 log("This pass collects memories and memory ports and creates generic multiport\n");
  35                 log("memory cells.\n");
  36                 log("\n");
  37         }
  38         void execute(std::vector<std::string> args, RTLIL::Design *design) override {
  39                 log_header(design, "Executing MEMORY_COLLECT pass (generating $mem cells).\n");
  40                 extra_args(args, 1, design);
  41                 for (auto module : design->selected_modules()) {
  42                         for (auto &mem : Mem::get_selected_memories(module)) {
  43                                 if (!mem.packed) {
  44                                         mem.packed = true;
  45                                         mem.emit();
  46                                 }
  47                         }
  48                 }
  49         }
  50 } MemoryCollectPass;
  51
  52 PRIVATE_NAMESPACE_END