[HW] Add HWVectorization pass

Author: mafeguimaraes

include/circt/Dialect/HW/Passes.td

@@ -92,4 +92,12 @@ def HWAggregateToComb : Pass<"hw-aggregate-to-comb", "hw::HWModuleOp"> {
   let dependentDialects = ["comb::CombDialect"];
 }
 
+def HWVectorization : Pass<"hw-vectorization", "hw::HWModuleOp"> {
+  let summary = "Vectorizes bit-level operations in HW dialect";
+  let description = [{
+   This pass performs structural vectorization of hardware modules,
+    merging scalar bit-level assignments into vectorized operations.
+  }];
+}
+
 #endif // CIRCT_DIALECT_HW_PASSES_TD

lib/Dialect/HW/CMakeLists.txt

@@ -16,6 +16,7 @@ set(CIRCT_HW_Sources
   InnerSymbolTable.cpp
   PortConverter.cpp
   InferIntRangeInterfaceImpls.cpp
+  HWVectorization.cpp
 )
 
 set(LLVM_OPTIONAL_SOURCES