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back.rtlil: do not add src attribute to cases if emit_src=False.

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Fixes #706.
This commit is contained in:
Catherine 2023-01-31 19:10:32 +00:00
parent de8846ea84
commit 7bf15bc466
1 changed files with 3 additions and 2 deletions
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5
amaranth/back/rtlil.py
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@ -779,8 +779,9 @@ class _StatementCompiler(xfrm.StatementVisitor):
with self._case.switch(test_sigspec, src=_src(stmt.src_loc)) as switch:
for values, stmts in stmt.cases.items():
case_attrs = {}
case_src = None
if values in stmt.case_src_locs:
case_attrs["src"] = _src(stmt.case_src_locs[values])
case_src = _src(stmt.case_src_locs[values])
if isinstance(stmt.test, ast.Signal) and stmt.test.decoder:
decoded_values = []
for value in values:
@ -789,7 +790,7 @@ class _StatementCompiler(xfrm.StatementVisitor):
else:
decoded_values.append(stmt.test.decoder(int(value, 2)))
case_attrs["amaranth.decoding"] = "|".join(decoded_values)
with self.case(switch, values, attrs=case_attrs):
with self.case(switch, values, attrs=case_attrs, src=case_src):
self._wrap_assign = False
self.on_statements(stmts)
self._wrap_assign = True