Merge pull request #685 from huningxin/gather_indicies_int32

Support int32 data type for 'indices' operand of 'gather' operator

index.bs

@@ -2667,7 +2667,7 @@ partial interface MLGraphBuilder {
 <div>
     **Arguments:**
         - *input*: an {{MLOperand}}. The input N-D tensor from which the values are gathered.
-        - *indices*: an {{MLOperand}}. The indices N-D tensor of the input values to gather. The values must be of type {{MLOperandDataType/"uint32"}} or {{MLOperandDataType/"int64"}}, and must be in the range -N (inclusive) to N (exclusive) where N is the size of the input dimension indexed by *options.axis*, and a negative index means indexing from the end of the dimension.
+        - *indices*: an {{MLOperand}}. The indices N-D tensor of the input values to gather. The values must be of type {{MLOperandDataType/"int32"}}, {{MLOperandDataType/"uint32"}} or {{MLOperandDataType/"int64"}}, and must be in the range -N (inclusive) to N (exclusive) where N is the size of the input dimension indexed by *options.axis*, and a negative index means indexing from the end of the dimension.
         - *options*: an optional {{MLGatherOptions}}. The optional parameters of the operation.
 
     **Returns:** an {{MLOperand}}. The output N-D tensor of [=MLOperand/rank=] equal to the [=MLOperand/rank=] of *input* + the [=MLOperand/rank=] of *indices* - 1.
@@ -2682,7 +2682,7 @@ partial interface MLGraphBuilder {
     The <dfn method for=MLGraphBuilder>gather(|input|, |indices|, |options|)</dfn> method steps are:
   </summary>
     1. If [=MLGraphBuilder/validating operand=] with [=this=] and any of |input| and |indices| returns false, then [=exception/throw=] a {{TypeError}}.
-    1. If |indices|'s [=MLOperand/dataType=] is not {{MLOperandDataType/"uint32"}} or {{MLOperandDataType/"int64"}}, then [=exception/throw=] a {{TypeError}}.
+    1. If |indices|'s [=MLOperand/dataType=] is not {{MLOperandDataType/"int32"}}, {{MLOperandDataType/"uint32"}} or {{MLOperandDataType/"int64"}}, then [=exception/throw=] a {{TypeError}}.
     1. Let |shapeInput| be |input|'s [=MLOperand/shape=] and |rankInput| be |shapeInput|'s [=MLOperand/rank=].
     1. Let |shapeIndices| be |indices|'s [=MLOperand/shape=].
     1. Let |axis| be |options|.{{MLGatherOptions/axis}}.