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libparse: add LibertyMergedCells, enable multiple -liberty args for dfflibmap and clockgate

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This commit is contained in:
Emil J. Tywoniak 2024-12-03 17:36:00 +01:00
parent 60fb241cb3
commit 6edf9c86cb
10 changed files with 317 additions and 77 deletions
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37
passes/techmap/libparse.h
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@ -86,8 +86,10 @@ namespace Yosys
bool eval(dict<std::string, bool>& values);
};
class LibertyMergedCells;
class LibertyParser
{
friend class LibertyMergedCells;
private:
std::istream &f;
int line;
@ -98,10 +100,10 @@ namespace Yosys
anything else is a single character.
*/
int lexer(std::string &str);
LibertyAst *parse();
void error();
void error(const std::string &str);
void error() const;
void error(const std::string &str) const;
public:
const LibertyAst *ast;
@ -109,6 +111,35 @@ namespace Yosys
LibertyParser(std::istream &f) : f(f), line(1), ast(parse()) {}
~LibertyParser() { if (ast) delete ast; }
};
class LibertyMergedCells
{
std::vector<const LibertyAst *> asts;
public:
std::vector<const LibertyAst *> cells;
void merge(LibertyParser &parser)
{
if (parser.ast) {
const LibertyAst *ast = parser.ast;
asts.push_back(ast);
// The parser no longer owns its top level ast, but we do.
// sketchy zone
parser.ast = nullptr;
if (ast->id != "library")
parser.error("Top level entity isn't \"library\".\n");
for (const LibertyAst *cell : ast->children)
if (cell->id == "cell" && cell->args.size() == 1)
cells.push_back(cell);
}
}
~LibertyMergedCells()
{
for (auto ast : asts)
delete ast;
}
};
}
#endif