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| author | Tobias Wölfel <tobias.woelfel@mailbox.org> | 2019-06-19 12:47:48 +0200 |
|---|---|---|
| committer | Tobias Wölfel <tobias.woelfel@mailbox.org> | 2019-06-19 12:47:48 +0200 |
| commit | 8b8af10f5e612eb1a39320e20b2d1d6f1e7d45df (patch) | |
| tree | 088235847c6b08188423a802dc9e20c74149cdad /frontends | |
| parent | c23bbc429103ca84cb8a9cfb674aacf7d14109c6 (diff) | |
| download | yosys-8b8af10f5e612eb1a39320e20b2d1d6f1e7d45df.tar.gz yosys-8b8af10f5e612eb1a39320e20b2d1d6f1e7d45df.tar.bz2 yosys-8b8af10f5e612eb1a39320e20b2d1d6f1e7d45df.zip | |
Unpacked array declaration using size
Allows fixed-sized array dimension specified by a single number.
This commit is based on the work from PeterCrozier
https://github.com/YosysHQ/yosys/pull/560.
But is split out of the original work.
Diffstat (limited to 'frontends')
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index a034f9601..f77321f09 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -1385,7 +1385,13 @@ wire_name: node->children.push_back(rng); } node->type = AST_MEMORY; - node->children.push_back($2); + auto *rangeNode = $2; + if (rangeNode->type == AST_RANGE && rangeNode->children.size() == 1) { + // SV array size [n], rewrite as [n-1:0] + rangeNode->children[0] = new AstNode(AST_SUB, rangeNode->children[0], AstNode::mkconst_int(1, true)); + rangeNode->children.push_back(AstNode::mkconst_int(0, false)); + } + node->children.push_back(rangeNode); } if (current_function_or_task == NULL) { if (do_not_require_port_stubs && (node->is_input || node->is_output) && port_stubs.count(*$1) == 0) { |