diff options
| author | mergify[bot] | 2022-02-15 22:35:23 +0000 |
|---|---|---|
| committer | GitHub | 2022-02-15 22:35:23 +0000 |
| commit | 4b8584b1d2c46c76b1540e265a84eeb247d684e4 (patch) | |
| tree | bce2fe248999fa04a2bb854dcc13781c8fac0618 /src/main | |
| parent | be4feccad0d4fe487a0bea57cb44702c08831429 (diff) | |
Make TruthTable accept unknown input width (#2387) (#2417)
Widths are now padded to the maximum width of the inputs.
Co-authored-by: Jack Koenig <koenig@sifive.com>
(cherry picked from commit 546b4e13fe90ff09d24b63664c072d46c13c0c38)
Co-authored-by: Jiuyang Liu <liu@jiuyang.me>
Diffstat (limited to 'src/main')
| -rw-r--r-- | src/main/scala/chisel3/util/experimental/decode/TruthTable.scala | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/main/scala/chisel3/util/experimental/decode/TruthTable.scala b/src/main/scala/chisel3/util/experimental/decode/TruthTable.scala index e742fd66..00fa0f9c 100644 --- a/src/main/scala/chisel3/util/experimental/decode/TruthTable.scala +++ b/src/main/scala/chisel3/util/experimental/decode/TruthTable.scala @@ -31,10 +31,15 @@ object TruthTable { /** Convert a table and default output into a [[TruthTable]]. */ def apply(table: Iterable[(BitPat, BitPat)], default: BitPat, sort: Boolean = true): TruthTable = { - require(table.map(_._1.getWidth).toSet.size == 1, "input width not equal.") + val inputWidth = table.map(_._1.getWidth).max require(table.map(_._2.getWidth).toSet.size == 1, "output width not equal.") val outputWidth = table.map(_._2.getWidth).head - val mergedTable = table + val mergedTable = table.map { + // pad input signals if necessary + case (in, out) if inputWidth > in.width => + (BitPat.N(inputWidth - in.width) ## in, out) + case (in, out) => (in, out) + } .groupBy(_._1.toString) .map { case (key, values) => |