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Add $specrule cells for $setup/$hold/$skew specify rules

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2019-04-23 15:46:40 +02:00
parent 634482380c
commit 71c38d9de5
9 changed files with 133 additions and 6 deletions
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4
frontends/ast/ast.cc
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@ -952,7 +952,7 @@ static AstModule* process_module(AstNode *ast, bool defer, AstNode *original_ast
if (child->type == AST_PARAMETER || child->type == AST_LOCALPARAM)
continue;
if (child->type == AST_CELL && child->children.size() > 0 && child->children[0]->type == AST_CELLTYPE &&
(child->children[0]->str == "$specify2" || child->children[0]->str == "$specify3"))
(child->children[0]->str == "$specify2" || child->children[0]->str == "$specify3" || child->children[0]->str == "$specrule"))
continue;
blackbox_module = false;
break;
@ -1039,7 +1039,7 @@ static AstModule* process_module(AstNode *ast, bool defer, AstNode *original_ast
child->children.push_back(AstNode::mkconst_int(0, false, 0));
new_children.push_back(child);
} else if (child->type == AST_CELL && child->children.size() > 0 && child->children[0]->type == AST_CELLTYPE &&
(child->children[0]->str == "$specify2" || child->children[0]->str == "$specify3")) {
(child->children[0]->str == "$specify2" || child->children[0]->str == "$specify3" || child->children[0]->str == "$specrule")) {
new_children.push_back(child);
} else {
delete child;

6
frontends/ast/genrtlil.cc
View file

@ -1538,6 +1538,12 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
cell->setParam("\\SRC_WIDTH", Const(src_width));
cell->setParam("\\DST_WIDTH", Const(dst_width));
}
if (cell->type == "$specrule") {
int src_width = GetSize(cell->getPort("\\SRC"));
int dst_width = GetSize(cell->getPort("\\DST"));
cell->setParam("\\SRC_WIDTH", Const(src_width));
cell->setParam("\\DST_WIDTH", Const(dst_width));
}
}
break;