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Added abc.node_retention flag

This commit is contained in:
AdvaySingh1 2026-02-02 12:08:18 -08:00
parent 47469c2490
commit f452702017
1 changed files with 3 additions and 2 deletions
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5
passes/techmap/abc.cc
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@ -146,6 +146,7 @@ struct AbcConfig
bool cmos_cost = false;
int max_threads = -1; // -1 means auto (use number of modules)
int reserved_cores = 4; // cores reserved for main thread and other work
bool abc_node_retention = false; // retain nodes in ABC (off by default)
};
struct AbcSigVal {
@ -991,7 +992,7 @@ void AbcModuleState::prepare_module(RTLIL::Design *design, RTLIL::Module *module
log_header(design, "Extracting gate netlist of module `%s' to `%s/input.blif'..\n",
module->name.c_str(), replace_tempdir(run_abc.tempdir_name, run_abc.tempdir_name, config.show_tempdir).c_str());
std::string abc_script = stringf("read_blif \"%s/input.blif\"; ", run_abc.tempdir_name);
std::string abc_script = stringf("read_blif " + (config.abc_node_retention ? " -r" : "") + " \"%s/input.blif\"; ", run_abc.tempdir_name);
if (!config.liberty_files.empty() || !config.genlib_files.empty()) {
std::string dont_use_args;
@ -2084,7 +2085,7 @@ struct AbcPass : public Pass {
config.map_mux16 = design->scratchpad_get_bool("abc.mux16", false);
config.abc_dress = design->scratchpad_get_bool("abc.dress", false);
g_arg = design->scratchpad_get_string("abc.g", g_arg);
config.abc_node_retention = design->scratchpad_get_bool("abc.node_retention", false);
config.fast_mode = design->scratchpad_get_bool("abc.fast", false);
bool dff_mode = design->scratchpad_get_bool("abc.dff", false);
std::string clk_str;