luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-09-02 10:48:27 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add error on non-packed struct randc (#5999).

Browse Source
This commit is contained in:
Wilson Snyder
2025-09-06 08:24:19 -04:00
parent b4a9ff4ffe
commit 0d1f036f17
5 changed files with 48 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3Randomize.cpp
+8 -3
View File
@@ -1602,9 +1602,7 @@ class RandomizeVisitor final : public VNVisitor {
if (AstEnumDType* const enumDtp = VN_CAST(varp->dtypep()->skipRefToEnump(), EnumDType)) {
items = static_cast<uint64_t>(enumDtp->itemCount());
} else {
AstBasicDType* const basicp = varp->dtypep()->skipRefp()->basicp();
UASSERT_OBJ(basicp, varp, "Unexpected randc variable dtype");
} else if (AstBasicDType* const basicp = varp->dtypep()->skipRefp()->basicp()) {
if (basicp->width() > 32) {
varp->v3error("Maximum implemented width for randc is 32 bits, "
<< varp->prettyNameQ() << " is " << basicp->width() << " bits");
@@ -1612,6 +1610,13 @@ class RandomizeVisitor final : public VNVisitor {
return nullptr;
}
items = 1ULL << basicp->width();
} else if (AstStructDType* const dtp = VN_CAST(varp->dtypep()->skipRefp(), StructDType)) {
UASSERT_OBJ(!dtp->packed(), dtp, "skipRef should have hidden packed before got here");
dtp->v3error("Unpacked structs shall not be declared as randc"
" (IEEE 1800-2023 18.4)");
return nullptr;
} else {
varp->v3fatalSrc("Unexpected randc variable dtype");
}
AstCDType* newdtp = findVlRandCDType(varp->fileline(), items);
AstVar* newp