Fix softmax operator

src/include/migraph/operators.hpp

@@ -413,11 +413,6 @@ struct atan : unary
     std::string name() const { return "atan"; }
 };
 
-struct softmax : unary
-{
-    std::string name() const { return "softmax"; }
-};
-
 struct tanh : unary
 {
     std::string name() const { return "tanh"; }
@@ -433,6 +428,16 @@ struct neg : unary
     std::string name() const { return "neg"; }
 };
 
+struct softmax
+{
+    std::string name() const { return "softmax"; }
+    shape compute_shape(std::vector<shape> inputs) const
+    {
+        check_shapes{inputs}.has(1).only_dims(4);
+        return inputs.at(0);
+    }
+};
+
 struct flatten
 {
     uint64_t axis = 0;

src/onnx/onnx.cpp

@@ -53,7 +53,6 @@ struct onnx_parser
         add_generic_op("MatMul", gemm{});
         add_generic_op("Mul", mul{});
         add_generic_op("Relu", activation{"relu"});
-        add_generic_op("Softmax", softmax{});
         add_generic_op("Sub", sub{});
         add_generic_op("Sum", add{});
 
@@ -65,6 +64,7 @@ struct onnx_parser
         add_mem_op("Flatten", &onnx_parser::parse_flatten);
         add_mem_op("Gemm", &onnx_parser::parse_gemm);
         add_mem_op("BatchNormalization", &onnx_parser::parse_batchnorm);
+        add_mem_op("Softmax", &onnx_parser::parse_softmax);
     }
 
     template <class F>
@@ -101,6 +101,15 @@ struct onnx_parser
         });
     }
 
+    instruction_ref
+    parse_softmax(const std::string&, attribute_map, std::vector<instruction_ref> args)
+    {
+        auto dims = args.front()->get_shape().lens();
+        auto r = prog.add_instruction(reshape{{long(dims[0]), 1, 1, long(dims[1])}}, args.front());
+        auto s = prog.add_instruction(softmax{}, r);
+        return prog.add_instruction(reshape{{long(dims[0]), long(dims[1])}}, s);
+    }
+
     instruction_ref
     parse_conv(const std::string&, attribute_map attributes, std::vector<instruction_ref> args)
     {

src/program.cpp

@@ -12,6 +12,7 @@
 namespace migraph {
 
 MIGRAPH_DECLARE_ENV_VAR(MIGRAPH_TRACE_COMPILE)
+MIGRAPH_DECLARE_ENV_VAR(MIGRAPH_TRACE_EVAL)
 
 struct program_impl
 {
@@ -317,8 +318,18 @@ argument generic_eval(const program& p,
 
 argument program::eval(std::unordered_map<std::string, argument> params) const
 {
-    return generic_eval(
-        *this, this->impl->ctx, std::move(params), [](auto&, auto f) { return f(); });
+    if(enabled(MIGRAPH_TRACE_EVAL{})) {
+        auto& ctx          = this->impl->ctx;
+        return generic_eval(*this, this->impl->ctx, std::move(params), [&](auto& ins, auto f) { 
+            ctx.finish();
+            std::cout << "Run instruction: " << ins->name() << std::endl;
+            return f();
+        });
+        
+    } else {
+        return generic_eval(*this, this->impl->ctx, std::move(params), [](auto&, auto f) { return f(); });
+        
+    }
 }
 
 double common_average(const std::vector<double>& v)

src/targets/gpu/lowering.cpp

@@ -312,7 +312,7 @@ struct miopen_softmax
     shape compute_shape(const std::vector<shape>& inputs) const
     {
         check_shapes{inputs, *this}.has(2).standard();
-        return inputs.at(1);
+        return op.compute_shape({inputs.at(0)});
     }
 
     argument
@@ -438,8 +438,9 @@ struct miopen_apply
 
     instruction_ref apply_softmax(instruction_ref ins)
     {
+        auto&& op = any_cast<softmax>(ins->get_operator());
         auto output = insert_allocation(ins, ins->get_shape());
-        return prog->replace_instruction(ins, miopen_softmax{}, ins->inputs().at(0), output);
+        return prog->replace_instruction(ins, miopen_softmax{op}, ins->inputs().at(0), output);
     }
 
     instruction_ref apply_add(instruction_ref ins)

test/gpu/miopen.cpp

@@ -246,6 +246,17 @@ struct test_softmax
     }
 };
 
+struct test_softmax2
+{
+    migraph::program create_program() const
+    {
+        migraph::program p;
+        auto x   = p.add_parameter("x", migraph::shape{migraph::shape::float_type, {1, 1000}});
+        p.add_instruction(migraph::softmax{}, x);
+        return p;
+    }
+};
+
 struct test_conv
 {
     migraph::program create_program() const
@@ -527,6 +538,9 @@ int main()
     verify_program<test_add_broadcast3>();
     verify_program<test_add_broadcast4>();
     verify_program<test_add_broadcast5>();
+    verify_program<test_softmax>();
+    // TODO: Add reshapes to make this a valid test case
+    // verify_program<test_softmax2>();
     verify_program<test_conv>();
     verify_program<test_conv_relu>();
     verify_program<test_add_relu>();