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abc9: tolerate ABC nonzero exit code if output.aig; write before &mfs 

Re-enable mfs for xilinx/ecp5 speculatively -- if it fails, use pre-mfs
result
This commit is contained in:
Eddie Hung 2020-04-20 11:26:11 -07:00
parent a998a4155d
commit 3d7b983351
3 changed files with 13 additions and 6 deletions
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15
passes/techmap/abc9_exe.cc
View File

@ -222,6 +222,13 @@ void abc9_module(RTLIL::Design *design, std::string script_file, std::string exe
if (design->scratchpad_get_bool("abc9.nomfs"))
for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos))
abc9_script = abc9_script.erase(pos, strlen("&mfs"));
else {
auto s = stringf("&write -n %s/output.aig; ", tempdir_name.c_str());
for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos)) {
abc9_script = abc9_script.insert(pos, s);
pos += GetSize(s) + strlen("&mfs");
}
}
abc9_script += stringf("; &ps -l; &write -n %s/output.aig", tempdir_name.c_str());
if (design->scratchpad_get_bool("abc9.verify")) {
@ -276,8 +283,12 @@ void abc9_module(RTLIL::Design *design, std::string script_file, std::string exe
free(abc9_argv[2]);
free(abc9_argv[3]);
#endif
if (ret != 0)
log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
if (ret != 0) {
if (check_file_exists(stringf("%s/output.aig", tempdir_name.c_str())))
log_warning("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
else
log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
}
}
struct Abc9ExePass : public Pass {

2
techlibs/ecp5/synth_ecp5.cc
View File

@ -324,8 +324,6 @@ struct SynthEcp5Pass : public ScriptPass
if (abc9) {
run("read_verilog -icells -lib -specify +/abc9_model.v +/ecp5/abc9_model.v");
if (!help_mode && !active_design->scratchpad.count("abc9.nomfs"))
active_design->scratchpad_set_bool("abc9.nomfs", true);
if (nowidelut)
run("abc9 -maxlut 4 -W 200");
else

2
techlibs/xilinx/synth_xilinx.cc
View File

@ -613,8 +613,6 @@ struct SynthXilinxPass : public ScriptPass
if (family != "xc7")
log_warning("'synth_xilinx -abc9' not currently supported for the '%s' family, "
"will use timing for 'xc7' instead.\n", family.c_str());
if (!help_mode && !active_design->scratchpad.count("abc9.nomfs"))
active_design->scratchpad_set_bool("abc9.nomfs", true);
std::string techmap_args = "-map +/xilinx/abc9_map.v -max_iter 1";
if (dff_mode)
techmap_args += " -D DFF_MODE";