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Refactor V3Delayed to enable algorithmic extension (#5090) 

No functional change.

This patch is just cleanup with some non-functional changes to enable
the next patch. Most importantly createDlyOnSet, which implements NBAs
for arrays, has a new streamlined implementation that does the same
thing. Some output code is perturbed due to statement/local variable
insertion order.

Also renamed Vdlyvfoo to VdlyFoo for easier readability of the generated
code.
This commit is contained in:
Geza Lore 2024-05-01 23:06:25 +01:00 committed by GitHub
parent b5b937e2f2
commit d841a791e6
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GPG Key ID: B5690EEEBB952194
3 changed files with 424 additions and 430 deletions
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10
src/V3AstNodeOther.h
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@ -2434,13 +2434,11 @@ public:
ASTGEN_MEMBERS_AstAlwaysObserved; ASTGEN_MEMBERS_AstAlwaysObserved;
}; };
class AstAlwaysPost final : public AstNodeProcedure { class AstAlwaysPost final : public AstNodeProcedure {
// Like always but post assignments for memory assignment IFs // Like always but 'post' scheduled, e.g. for array NBA commits
// @astgen op1 := sensesp : Optional[AstSenTree] // Sensitivity list iff clocked
public: public:
AstAlwaysPost(FileLine* fl, AstSenTree* sensesp, AstNode* stmtsp) AstAlwaysPost(FileLine* fl)
: ASTGEN_SUPER_AlwaysPost(fl, stmtsp) { : ASTGEN_SUPER_AlwaysPost(fl, nullptr) {}
this->sensesp(sensesp);
}
ASTGEN_MEMBERS_AstAlwaysPost; ASTGEN_MEMBERS_AstAlwaysPost;
}; };
class AstAlwaysPostponed final : public AstNodeProcedure { class AstAlwaysPostponed final : public AstNodeProcedure {

842
src/V3Delayed.cpp
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File diff suppressed because it is too large Load Diff

2
src/V3SchedVirtIface.cpp
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@ -128,7 +128,7 @@ private:
if (writesToVirtIface(nodep)) { if (writesToVirtIface(nodep)) {
// Convert to always, as we have to assign the trigger var // Convert to always, as we have to assign the trigger var
FileLine* const flp = nodep->fileline(); FileLine* const flp = nodep->fileline();
AstAlwaysPost* const postp = new AstAlwaysPost{flp, nullptr, nullptr}; AstAlwaysPost* const postp = new AstAlwaysPost{flp};
nodep->replaceWith(postp); nodep->replaceWith(postp);
postp->addStmtsp( postp->addStmtsp(
new AstAssign{flp, nodep->lhsp()->unlinkFrBack(), nodep->rhsp()->unlinkFrBack()}); new AstAssign{flp, nodep->lhsp()->unlinkFrBack(), nodep->rhsp()->unlinkFrBack()});