diff options
| author | Eddie Hung <eddieh@ece.ubc.ca> | 2019-03-19 13:11:30 -0700 |
|---|---|---|
| committer | Eddie Hung <eddieh@ece.ubc.ca> | 2019-03-19 13:11:30 -0700 |
| commit | 24553326dde876b51179e092e608ce8174a44681 (patch) | |
| tree | 29af5ce1fabcef3a105f45898b411ec4188bf97f /frontends/ast/genrtlil.cc | |
| parent | 0ea7eba5f13b20de28181a66181ee821820027db (diff) | |
| parent | 8c0740bcf7a1149ac11332f7e7fd9c8f78f0a0b5 (diff) | |
| download | yosys-24553326dde876b51179e092e608ce8174a44681.tar.gz yosys-24553326dde876b51179e092e608ce8174a44681.tar.bz2 yosys-24553326dde876b51179e092e608ce8174a44681.zip | |
Merge remote-tracking branch 'origin/master' into xc7srl
Diffstat (limited to 'frontends/ast/genrtlil.cc')
| -rw-r--r-- | frontends/ast/genrtlil.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc index d7da6fb40..b3a2a84be 100644 --- a/frontends/ast/genrtlil.cc +++ b/frontends/ast/genrtlil.cc @@ -525,7 +525,16 @@ struct AST_INTERNAL::ProcessGenerator } if (last_generated_case != NULL && ast->get_bool_attribute("\\full_case") && default_case == NULL) { + #if 0 + // this is a valid transformation, but as optimization it is premature. + // better: add a default case that assigns 'x' to everything, and let later + // optimizations take care of the rest last_generated_case->compare.clear(); + #else + default_case = new RTLIL::CaseRule; + addChunkActions(default_case->actions, this_case_eq_ltemp, SigSpec(State::Sx, GetSize(this_case_eq_rvalue))); + sw->cases.push_back(default_case); + #endif } else { if (default_case == NULL) { default_case = new RTLIL::CaseRule; |