[MLIR][TORCH] Add support for Short(si16) data type

Signed-Off By: Vivek Khandelwal <[email protected]>

lib/Dialect/Torch/Utils/Utils.cpp

@@ -51,6 +51,8 @@ torch_upstream::ScalarType Torch::getScalarTypeForType(Type type) {
     return torch_upstream::ScalarType::Long;
   if (type.isSignedInteger(32))
     return torch_upstream::ScalarType::Int;
+  if (type.isSignedInteger(16))
+    return torch_upstream::ScalarType::Short;
   if (type.isSignlessInteger(1))
     return torch_upstream::ScalarType::Bool;
   if (type.isBF16())
@@ -95,6 +97,8 @@ Torch::getTypeForScalarType(MLIRContext *context,
     return IntegerType::get(context, 64, mlir::IntegerType::Signed);
   case torch_upstream::ScalarType::Int:
     return IntegerType::get(context, 32, mlir::IntegerType::Signed);
+  case torch_upstream::ScalarType::Short:
+    return IntegerType::get(context, 16, mlir::IntegerType::Signed);
   case torch_upstream::ScalarType::Bool:
     return IntegerType::get(context, 1);
   case torch_upstream::ScalarType::BFloat16:
@@ -213,8 +217,8 @@ Value Torch::getConstantWithGivenDtypeAndValue(PatternRewriter &rewriter,
                                                Location loc, float value,
                                                Type dtype) {
   // Creating constants satisfying backend contract.
-  if (dtype.isInteger(64) || dtype.isInteger(32) || dtype.isInteger(8) ||
-      dtype.isInteger(1))
+  if (dtype.isInteger(64) || dtype.isInteger(32) || dtype.isInteger(16) ||
+      dtype.isInteger(8) || dtype.isInteger(1))
     return rewriter.create<ConstantIntOp>(
         loc, rewriter.getI64IntegerAttr((int64_t)value));
   if (dtype.isF64() || dtype.isF32() || dtype.isF16() || dtype.isBF16())