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Internals: Replace VlTriggerVec with unpacked array (#6616)

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Removed the VlTriggerVec type, and refactored to use an unpacked array
of 64-bit words instead. This means the trigger vector and its
operations are now the same as for any other unpacked array. The few
special functions required for operating on a trigger vector are now
generated in V3SchedTrigger as regular AstCFunc if needed.

No functional change intended, performance should be the same.
This commit is contained in:
Geza Lore
2025-10-31 18:29:11 +00:00
committed by GitHub
parent 08330f5fe2
commit 922223a9c3
35 changed files with 5233 additions and 3382 deletions
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src/V3Cast.cpp
+1 -2
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@@ -188,8 +188,7 @@ class CastVisitor final : public VNVisitor {
if (nodep->access().isReadOnly() && VN_IS(backp, NodeExpr) && !VN_IS(backp, CCast)
&& !VN_IS(backp, NodeCCall) && !VN_IS(backp, CMethodHard) && !VN_IS(backp, SFormatF)
&& !VN_IS(backp, ArraySel) && !VN_IS(backp, StructSel) && !VN_IS(backp, RedXor)
&& (nodep->varp()->basicp() && !nodep->varp()->basicp()->isTriggerVec()
&& !nodep->varp()->basicp()->isForkSync()
&& (nodep->varp()->basicp() && !nodep->varp()->basicp()->isForkSync()
&& !nodep->varp()->basicp()->isProcessRef() && !nodep->varp()->basicp()->isEvent())
&& backp->width() && castSize(nodep) != castSize(nodep->varp())) {
// Cast vars to IData first, else below has upper bits wrongly set