Initial

src/include/migraphx/op/broadcast.hpp

@@ -44,6 +44,7 @@ struct broadcast
 {
     uint64_t axis = 0;
     std::vector<std::size_t> broadcast_lens;
+    std::vector<shape::dynamic_dimension> broadcast_dyn_dims;
 
     template <class Self, class F>
     static auto reflect(Self& self, F f)
@@ -54,11 +55,12 @@ struct broadcast
     std::string name() const { return "broadcast"; }
     shape compute_shape(std::vector<shape> inputs) const
     {
+        check_shapes{inputs, *this}.has(1);
         auto input = inputs.at(0);
         auto t     = input.type();
 
         std::vector<size_t> bcast_strides(broadcast_lens.size(), 0);
-        // the broacast op is deprecated now, so not handling the negative
+        // the broadcast op is deprecated now, so not handling the negative
         // value of axis anymore
         if(axis >= broadcast_lens.size())
         {

src/include/migraphx/op/multibroadcast.hpp

@@ -26,6 +26,8 @@
 
 #include <migraphx/check_shapes.hpp>
 #include <migraphx/argument.hpp>
+#include <migraphx/operation.hpp>
+#include <migraphx/common.hpp>
 #include <migraphx/config.hpp>
 
 namespace migraphx {
@@ -46,44 +48,66 @@ struct multibroadcast
 
     shape compute_shape(std::vector<shape> inputs) const
     {
-        check_shapes{inputs, *this}.has(1);
-        auto t     = inputs.at(0).type();
-        auto input = inputs.at(0);
+        check_shapes{inputs, *this, true}.has(1, 2);
 
-        if(input.lens().empty())
+        auto t           = inputs.at(0).type();
+        auto input_shape = inputs.at(0);
+        if(inputs.size() == 1)
+        {
+            if(input_shape.lens().empty())
             {
                 MIGRAPHX_THROW("MULTIBROADCAST: inputs dimensions should be > 0");
             }
 
-        if(input.lens().size() > output_lens.size())
+            if(input_shape.lens().size() > output_lens.size())
             {
                 MIGRAPHX_THROW("MULTIBROADCAST: inputs dimensions should <= output size");
             }
 
-        auto offset = output_lens.size() - input.lens().size();
-        for(std::ptrdiff_t i = input.lens().size() - 1; i >= 0; i--)
+            auto offset = output_lens.size() - input_shape.lens().size();
+            for(std::ptrdiff_t i = input_shape.lens().size() - 1; i >= 0; i--)
             {
-            if(output_lens[i + offset] != input.lens()[i] and input.lens()[i] != 1)
+                if(output_lens[i + offset] != input_shape.lens()[i] and input_shape.lens()[i] != 1)
                 {
-                MIGRAPHX_THROW("MULTIBROADCAST: input shape {" + to_string_range(input.lens()) +
-                               "} cannot be broadcasted to {" + to_string_range(output_lens) +
-                               "}!");
+                    MIGRAPHX_THROW(
+                        "MULTIBROADCAST: input shape {" + to_string_range(input_shape.lens()) +
+                        "} cannot be broadcasted to {" + to_string_range(output_lens) + "}!");
                 }
             }
 
             std::vector<size_t> bcast_strides(output_lens.size(), 0);
-        for(std::ptrdiff_t i = input.lens().size() - 1; i >= 0; i--)
+            for(std::ptrdiff_t i = input_shape.lens().size() - 1; i >= 0; i--)
             {
-            if(output_lens[i + offset] == input.lens()[i])
+                if(output_lens[i + offset] == input_shape.lens()[i])
                 {
-                bcast_strides[i + offset] = input.strides()[i];
+                    bcast_strides[i + offset] = input_shape.strides()[i];
                 }
             }
             return {t, output_lens, bcast_strides};
         }
-    argument compute(shape output_shape, std::vector<argument> args) const
+        else
+        {
+            // need both shapes when handling dynamic case
+            // shapes can be dynamic (at compile-time) or static (at evaluation time)
+            // this function will be called through compute_output_shape conversion to dyn_output
+            // new compute_broadcasted_lens for dynamic shapes
+            auto other_shape = inputs.at(1);
+            if(input_shape.dynamic() and other_shape.dynamic()) {}
+            else if(not input_shape.dynamic() and not other_shape.dynamic())
+            {
+                auto output_lens = compute_broadcasted_lens(input_shape.lens(), other_shape.lens());
+            }
+            else
+            {
+                MIGRAPHX_THROW(
+                    "MULTIBROADCAST: input_shape and other_shape are not both dynamic or static");
+            }
+        }
+    }
+
+    argument compute(const dyn_output& dyn_out, std::vector<argument> args) const
     {
-        return args[0].reshape(output_shape);
+        return args[0].reshape(dyn_out.computed_shape);
     }
     std::ptrdiff_t output_alias(const std::vector<shape>&) const { return 0; }
 };