add ConstantIntOp constructor for APInt types

Author: ashjeong

mlir/include/mlir/Dialect/Arith/IR/Arith.h

@@ -65,6 +65,10 @@ class ConstantIntOp : public arith::ConstantOp {
   static void build(OpBuilder &builder, OperationState &result, int64_t value,
                     Type type);
 
+  /// Build a constant int op that produces an integer from an APInt
+  static void build(OpBuilder &builder, OperationState &result, Type type,
+                    const APInt &value);
+
   inline int64_t value() {
     return cast<IntegerAttr>(arith::ConstantOp::getValue()).getInt();
   }

mlir/lib/Dialect/Arith/IR/ArithOps.cpp

@@ -264,6 +264,12 @@ void arith::ConstantIntOp::build(OpBuilder &builder, OperationState &result,
                            builder.getIntegerAttr(type, value));
 }
 
+void arith::ConstantIntOp::build(OpBuilder &builder, OperationState &result,
+                                 Type type, const APInt &value) {
+  arith::ConstantOp::build(builder, result, type,
+                           builder.getIntegerAttr(type, value));
+}
+
 bool arith::ConstantIntOp::classof(Operation *op) {
   if (auto constOp = dyn_cast_or_null<arith::ConstantOp>(op))
     return constOp.getType().isSignlessInteger();