luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-10-06 10:03:44 +02:00
Code Issues Packages Projects Releases Wiki Activity

Internals: Create VAccess class. No functional change intended.

Browse Source
This commit is contained in:
Wilson Snyder
2020-09-07 17:09:25 -04:00
parent cc134b38ee
commit 1899a875a4
52 changed files with 470 additions and 384 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3LinkParse.cpp
+17 -12
View File
@@ -226,9 +226,9 @@ private:
} else if (VN_IS(m_modp, Class)) {
// 2. Class member init become initials (as might call functions)
// later move into class constructor
nodep->addNextHere(
new AstInitial(fl, new AstAssign(fl, new AstVarRef(fl, nodep->name(), true),
nodep->valuep()->unlinkFrBack())));
nodep->addNextHere(new AstInitial(
fl, new AstAssign(fl, new AstVarRef(fl, nodep->name(), VAccess::WRITE),
nodep->valuep()->unlinkFrBack())));
} else if (!m_ftaskp && nodep->isNonOutput()) {
nodep->v3warn(E_UNSUPPORTED, "Unsupported: Default value on module input: "
<< nodep->prettyNameQ());
@@ -239,11 +239,13 @@ private:
FileLine* newfl = new FileLine(fl);
newfl->warnOff(V3ErrorCode::PROCASSWIRE, true);
nodep->addNextHere(new AstInitial(
newfl, new AstAssign(newfl, new AstVarRef(newfl, nodep->name(), true),
nodep->valuep()->unlinkFrBack())));
newfl,
new AstAssign(newfl, new AstVarRef(newfl, nodep->name(), VAccess::WRITE),
nodep->valuep()->unlinkFrBack())));
} // 4. Under blocks, it's an initial value to be under an assign
else {
nodep->addNextHere(new AstAssign(fl, new AstVarRef(fl, nodep->name(), true),
nodep->addNextHere(new AstAssign(fl,
new AstVarRef(fl, nodep->name(), VAccess::WRITE),
nodep->valuep()->unlinkFrBack()));
}
}
@@ -333,7 +335,8 @@ private:
// lvalue is true, because we know we have a verilator public_flat_rw
// but someday we may be more general
bool lvalue = m_varp->isSigUserRWPublic();
nodep->addStmtp(new AstVarRef(nodep->fileline(), m_varp, lvalue));
nodep->addStmtp(
new AstVarRef(nodep->fileline(), m_varp, lvalue ? VAccess::WRITE : VAccess::READ));
}
}
@@ -445,7 +448,8 @@ private:
new AstConst(fl, dimension));
AstNode* stmtsp = varp;
// Assign left-dimension into the loop var:
stmtsp->addNext(new AstAssign(fl, new AstVarRef(fl, varp->name(), true), leftp));
stmtsp->addNext(
new AstAssign(fl, new AstVarRef(fl, varp->name(), VAccess::WRITE), leftp));
// This will turn into a constant bool for static arrays
AstNode* notemptyp = new AstGt(fl, sizep, new AstConst(fl, 0));
// This will turn into a bool constant, indicating whether
@@ -454,14 +458,15 @@ private:
AstNode* comparep = new AstCond(
fl, countupp->cloneTree(true),
// Left increments up to right
new AstLte(fl, new AstVarRef(fl, varp->name(), false), rightp->cloneTree(true)),
new AstLte(fl, new AstVarRef(fl, varp->name(), VAccess::READ),
rightp->cloneTree(true)),
// Left decrements down to right
new AstGte(fl, new AstVarRef(fl, varp->name(), false), rightp));
new AstGte(fl, new AstVarRef(fl, varp->name(), VAccess::READ), rightp));
// This will reduce to comparep for static arrays
AstNode* condp = new AstAnd(fl, notemptyp, comparep);
AstNode* incp = new AstAssign(
fl, new AstVarRef(fl, varp->name(), true),
new AstAdd(fl, new AstVarRef(fl, varp->name(), false),
fl, new AstVarRef(fl, varp->name(), VAccess::WRITE),
new AstAdd(fl, new AstVarRef(fl, varp->name(), VAccess::READ),
new AstCond(fl, countupp, new AstConst(fl, 1), new AstConst(fl, -1))));
stmtsp->addNext(new AstWhile(fl, condp, newp, incp));
newp = new AstBegin(nodep->fileline(), "", stmtsp, false, true);