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authorEddie Hung <eddie@fpgeh.com>2020-05-24 10:10:50 -0700
committerGitHub <noreply@github.com>2020-05-24 10:10:50 -0700
commit89ed34fe55fd6a70b51ff68439e68f9a9e0b9e0f (patch)
tree44b26469df3e400761bc0cb2948695c33d0ac7e8
parent227c3ff310e82516385b15d7cac905459f8bb09e (diff)
parent33b03ce904f6810437e27ca7a6df4fb1e966fc23 (diff)
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Merge pull request #2075 from YosysHQ/eddie/xaiger_cleanup
xaiger: do not derive cells
-rw-r--r--backends/aiger/xaiger.cc8
-rw-r--r--tests/various/xaiger.ys13
2 files changed, 14 insertions, 7 deletions
diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc
index 69797ceaf..6b910eecd 100644
--- a/backends/aiger/xaiger.cc
+++ b/backends/aiger/xaiger.cc
@@ -248,6 +248,7 @@ struct XAigerWriter
auto it = cell->attributes.find(ID::abc9_box_seq);
if (it != cell->attributes.end()) {
log_assert(!cell->has_keep_attr());
+ log_assert(cell->parameters.empty());
int abc9_box_seq = it->second.as_int();
if (GetSize(box_list) <= abc9_box_seq)
box_list.resize(abc9_box_seq+1);
@@ -260,13 +261,6 @@ struct XAigerWriter
continue;
}
- if (!cell->parameters.empty()) {
- auto derived_type = inst_module->derive(design, cell->parameters);
- inst_module = design->module(derived_type);
- log_assert(inst_module);
- log_assert(inst_module->get_blackbox_attribute());
- }
-
if (!timing.count(inst_module->name))
timing.setup_module(inst_module);
auto &t = timing.at(inst_module->name).arrival;
diff --git a/tests/various/xaiger.ys b/tests/various/xaiger.ys
new file mode 100644
index 000000000..f612d2e18
--- /dev/null
+++ b/tests/various/xaiger.ys
@@ -0,0 +1,13 @@
+read_verilog <<EOT
+module top(input a, b, output c);
+bb #(1) bb();
+endmodule
+
+module bb(input a, b, output c);
+parameter p = 0;
+assign c = a ^ b;
+endmodule
+EOT
+blackbox bb
+hierarchy
+write_xaiger /dev/null