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Fix try_as_const/as_wire/as_chunk

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This commit is contained in:
Robert O'Callahan 2025-10-30 11:59:57 +00:00
parent 000c081965
commit a0e9e2d364
1 changed files with 12 additions and 9 deletions
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21
kernel/rtlil.cc
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@ -5625,11 +5625,12 @@ std::optional<RTLIL::Const> RTLIL::SigSpec::try_as_const() const
{
cover("kernel.rtlil.sigspec.as_const");
auto it = chunks().begin();
if (it == chunks().end())
Chunks cs = chunks();
auto it = cs.begin();
if (it == cs.end())
return RTLIL::Const();
SigChunk chunk = *it;
if (chunk.wire != NULL || ++it != chunks().end())
if (chunk.wire != NULL || ++it != cs.end())
return std::nullopt;
return RTLIL::Const(std::move(chunk.data));
}
@ -5647,10 +5648,11 @@ RTLIL::Wire *RTLIL::SigSpec::as_wire() const
{
cover("kernel.rtlil.sigspec.as_wire");
auto it = chunks().begin();
log_assert(it != chunks().end());
Chunks cs = chunks();
auto it = cs.begin();
log_assert(it != cs.end());
RTLIL::SigChunk chunk = *it;
log_assert(++it == chunks().end() && chunk.wire && chunk.wire->width == width_);
log_assert(++it == cs.end() && chunk.wire && chunk.wire->width == width_);
return chunk.wire;
}
@ -5658,10 +5660,11 @@ RTLIL::SigChunk RTLIL::SigSpec::as_chunk() const
{
cover("kernel.rtlil.sigspec.as_chunk");
auto it = chunks().begin();
log_assert(it != chunks().end());
Chunks cs = chunks();
auto it = cs.begin();
log_assert(it != cs.end());
RTLIL::SigChunk chunk = *it;
log_assert(++it == chunks().end());
log_assert(++it == cs.end());
return chunk;
}