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Support positional assignment patterns for unpacked arrays

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This commit is contained in:
Christopher D. Leary 2026-04-21 22:29:53 -07:00
parent 2dc69a7578
commit 390f09b89a
7 changed files with 286 additions and 32 deletions
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12
frontends/ast/genrtlil.cc
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@ -1212,6 +1212,15 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint, bool *foun
sign_hint = false;
break;
case AST_ASSIGN_PATTERN:
for (auto& child : children) {
sub_width_hint = 0;
sub_sign_hint = true;
child->detectSignWidthWorker(sub_width_hint, sub_sign_hint);
}
sign_hint = false;
break;
case AST_NEG:
case AST_BIT_NOT:
case AST_POS:
@ -1824,6 +1833,9 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
return sig;
}
case AST_ASSIGN_PATTERN:
input_error("Assignment pattern is only supported for whole unpacked array assignments.\n");
// generate cells for unary operations: $not, $pos, $neg
if (0) { case AST_BIT_NOT: type_name = ID($not); }
if (0) { case AST_POS: type_name = ID($pos); }