luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-09-01 18:36:28 +02:00
Code Issues Packages Projects Releases Wiki Activity

Support unpacked array Constrained Randomization (#5437) (#5489)

Browse Source
This commit is contained in:
Yilou Wang
2024-10-02 10:29:47 -04:00
committed by GitHub
parent 39143cc15a
commit c05c48aaf3
7 changed files with 424 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3Randomize.cpp
+25
View File
@@ -428,6 +428,13 @@ class RandomizeMarkVisitor final : public VNVisitor {
backp->user1(true);
}
}
void visit(AstArraySel* nodep) override {
if (!m_constraintExprp) return;
for (AstNode* backp = nodep; backp != m_constraintExprp && !backp->user1();
backp = backp->backp())
backp->user1(true);
iterateChildrenConst(nodep);
}
void visit(AstNodeModule* nodep) override {
VL_RESTORER(m_modp);
m_modp = nodep;
@@ -604,6 +611,13 @@ class ConstraintExprVisitor final : public VNVisitor {
new AstVarRef{varp->fileline(), VN_AS(m_genp->user2p(), NodeModule), m_genp,
VAccess::READWRITE},
"write_var"};
uint32_t dimension = 0;
if (VN_IS(varp->dtypep(), UnpackArrayDType)) {
const std::pair<uint32_t, uint32_t> dims
= varp->dtypep()->dimensions(/*includeBasic=*/true);
const uint32_t unpackedDimensions = dims.second;
dimension = unpackedDimensions;
}
methodp->dtypeSetVoid();
AstClass* const classp = VN_AS(varp->user2p(), Class);
AstVarRef* const varRefp
@@ -619,6 +633,8 @@ class ConstraintExprVisitor final : public VNVisitor {
= new AstCExpr{varp->fileline(), "\"" + smtName + "\"", varp->width()};
varnamep->dtypep(varp->dtypep());
methodp->addPinsp(varnamep);
methodp->addPinsp(
new AstConst{varp->dtypep()->fileline(), AstConst::Unsized64{}, dimension});
if (randMode.usesMode) {
methodp->addPinsp(
new AstConst{varp->fileline(), AstConst::Unsized64{}, randMode.index});
@@ -676,6 +692,15 @@ class ConstraintExprVisitor final : public VNVisitor {
editSMT(nodep, nodep->fromp(), lsbp, msbp);
}
void visit(AstArraySel* nodep) override {
if (editFormat(nodep)) return;
FileLine* const fl = nodep->fileline();
VNRelinker handle;
AstNodeExpr* const indexp
= new AstSFormatF{fl, "#x%8x", false, nodep->bitp()->unlinkFrBack(&handle)};
handle.relink(indexp);
editSMT(nodep, nodep->fromp(), indexp);
}
void visit(AstSFormatF* nodep) override {}
void visit(AstStmtExpr* nodep) override {}
void visit(AstConstraintIf* nodep) override {