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dft_tag: Implement $overwrite_tag and $original_tag

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This does not correctly handle an `$overwrite_tag` on a module output,
but since we currently require the user to flatten the design for
cross-module dft, this cannot be observed from within the design, only
by manually inspecting the signals in the design.
This commit is contained in:
Jannis Harder 2023-08-29 17:40:51 +02:00
parent 78ff40d1b2
commit 62b4df4989
4 changed files with 124 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

9
kernel/rtlil.h
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@ -1465,10 +1465,11 @@ public:
RTLIL::SigSpec Allseq (RTLIL::IdString name, int width = 1, const std::string &src = "");
RTLIL::SigSpec Initstate (RTLIL::IdString name, const std::string &src = "");
RTLIL::SigSpec SetTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_e, const RTLIL::SigSpec &sig_s, const RTLIL::SigSpec &sig_c, const std::string &src = "");
RTLIL::SigSpec GetTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_e, const std::string &src = "");
RTLIL::Cell* addOverwriteTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_e, const RTLIL::SigSpec &sig_s, const RTLIL::SigSpec &sig_c, const std::string &src = "");
RTLIL::SigSpec OriginalTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_e, const std::string &src = "");
RTLIL::SigSpec SetTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_a, const RTLIL::SigSpec &sig_s, const RTLIL::SigSpec &sig_c, const std::string &src = "");
RTLIL::Cell* addSetTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_a, const RTLIL::SigSpec &sig_s, const RTLIL::SigSpec &sig_c, const RTLIL::SigSpec &sig_y, const std::string &src = "");
RTLIL::SigSpec GetTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_a, const std::string &src = "");
RTLIL::Cell* addOverwriteTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_a, const RTLIL::SigSpec &sig_s, const RTLIL::SigSpec &sig_c, const std::string &src = "");
RTLIL::SigSpec OriginalTag (RTLIL::IdString name, const std::string &tag, const RTLIL::SigSpec &sig_a, const std::string &src = "");
RTLIL::SigSpec FutureFF (RTLIL::IdString name, const RTLIL::SigSpec &sig_e, const std::string &src = "");
#ifdef WITH_PYTHON