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Remove some comments emitted in output.

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* Comments were disabling some optimizations.
* Suspect rarely referred to.
* Sometimes incorrectly placed due to other optimizations.
This commit is contained in:
Wilson Snyder 2020-12-15 22:36:52 -05:00
parent 084ba6711b
commit c00c26c705
3 changed files with 6 additions and 14 deletions
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1
src/V3Active.cpp
View File

@ -283,7 +283,6 @@ private:
m_namer.scopep()->addActivep(m_scopeFinalp);
}
nodep->unlinkFrBack();
m_scopeFinalp->addStmtsp(new AstComment(nodep->fileline(), nodep->typeName(), true));
m_scopeFinalp->addStmtsp(nodep->bodysp()->unlinkFrBackWithNext());
VL_DO_DANGLING(nodep->deleteTree(), nodep);
}

18
src/V3Clock.cpp
View File

@ -294,31 +294,25 @@ private:
m_scopep = nullptr;
}
virtual void visit(AstNodeProcedure* nodep) override {
AstNode* cmtp = new AstComment(nodep->fileline(), nodep->typeName(), true);
nodep->replaceWith(cmtp);
if (AstNode* stmtsp = nodep->bodysp()) {
stmtsp->unlinkFrBackWithNext();
cmtp->addNextHere(stmtsp);
nodep->addNextHere(stmtsp);
}
VL_DO_DANGLING(nodep->deleteTree(), nodep);
VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
}
virtual void visit(AstAlwaysPost* nodep) override {
AstNode* cmtp = new AstComment(nodep->fileline(), nodep->typeName(), true);
nodep->replaceWith(cmtp);
if (AstNode* stmtsp = nodep->bodysp()) {
stmtsp->unlinkFrBackWithNext();
cmtp->addNextHere(stmtsp);
nodep->addNextHere(stmtsp);
}
VL_DO_DANGLING(nodep->deleteTree(), nodep);
VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
}
virtual void visit(AstAlwaysPostponed* nodep) override {
AstNode* cmtp = new AstComment(nodep->fileline(), nodep->typeName(), true);
nodep->replaceWith(cmtp);
if (AstNode* stmtsp = nodep->bodysp()) {
stmtsp->unlinkFrBackWithNext();
cmtp->addNextHere(stmtsp);
nodep->addNextHere(stmtsp);
}
VL_DO_DANGLING(nodep->deleteTree(), nodep);
VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
}
virtual void visit(AstCoverToggle* nodep) override {
// nodep->dumpTree(cout, "ct:");

1
test_regress/t/t_debug_emitv.out
View File

@ -48,7 +48,6 @@ module Vt_debug_emitv;
???? // CFUNC '_final_TOP'
$_CSTMT(Vt_debug_emitv* const __restrict vlTOPp VL_ATTR_UNUSED = vlSymsp->TOPp;
);
// FINAL
$display("stmt");
always @(posedge clk)@(negedge clk) begin
$display("posedge clk");