rewrite the sigmoid to call hip kernel instead of miopen function

src/targets/gpu/CMakeLists.txt

@@ -33,6 +33,7 @@ add_library(migraphx_device
     device/contiguous.cpp
     device/logsoftmax.cpp
     device/softmax.cpp
+    device/sigmoid.cpp
     device/convert.cpp
     device/mul.cpp
     device/concat.cpp
@@ -74,7 +75,6 @@ add_library(migraphx_gpu
     batchnorm.cpp
     write_literals.cpp
     rocblas.cpp
-    sigmoid.cpp
     abs.cpp
     elu.cpp
     pad.cpp

src/targets/gpu/device/sigmoid.cpp

+#include <migraphx/gpu/device/sigmoid.hpp>
+#include <migraphx/gpu/device/nary.hpp>
+#include <migraphx/gpu/device/types.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace gpu {
+namespace device {
+
+void sigmoid(hipStream_t stream, const argument& result, const argument& arg)
+{
+    nary(stream, result, arg)([](auto x) { return 1.f / (1.f + ::exp(to_hip_type(-x))); });
+}
+
+} // namespace device
+} // namespace gpu
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx

src/targets/gpu/include/migraphx/gpu/device/sigmoid.hpp

+#ifndef MIGRAPHX_GUARD_RTGLIB_DEVICE_SIGMOID_HPP
+#define MIGRAPHX_GUARD_RTGLIB_DEVICE_SIGMOID_HPP
+
+#include <migraphx/argument.hpp>
+#include <migraphx/config.hpp>
+#include <hip/hip_runtime_api.h>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace gpu {
+namespace device {
+
+void sigmoid(hipStream_t stream, const argument& result, const argument& arg);
+
+} // namespace device
+} // namespace gpu
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif

src/targets/gpu/include/migraphx/gpu/sigmoid.hpp

 #ifndef MIGRAPHX_GUARD_RTGLIB_SIGMOID_HPP
 #define MIGRAPHX_GUARD_RTGLIB_SIGMOID_HPP
 
-#include <migraphx/shape.hpp>
-#include <migraphx/gpu/miopen.hpp>
+#include <migraphx/gpu/oper.hpp>
+#include <migraphx/gpu/device/sigmoid.hpp>
 
 namespace migraphx {
 inline namespace MIGRAPHX_INLINE_NS {
 namespace gpu {
 
-struct context;
-
-struct miopen_sigmoid
+struct hip_sigmoid : unary_device<hip_sigmoid, device::sigmoid>
 {
-    shared<activation_descriptor> ad;
-
-    template <class Self, class F>
-    static auto reflect(Self& self, F f)
-    {
-        return gpu::reflect(self.ad.get(), f);
-    }
-
-    std::string name() const { return "gpu::sigmoid"; }
-    shape compute_shape(const std::vector<shape>& inputs) const;
-    argument
-    compute(context& ctx, const shape& output_shape, const std::vector<argument>& args) const;
-    std::ptrdiff_t output_alias(const std::vector<shape>& shapes) const
-    {
-        return shapes.size() - 1;
-    }
 };
 
 } // namespace gpu

src/targets/gpu/lowering.cpp

@@ -83,7 +83,6 @@ struct miopen_apply
     void init()
     {
         this->last = instruction::get_output_alias(std::prev(prog->end()));
-        add_miopen_simple_op<miopen_sigmoid>("sigmoid", make_sigmoid);
         add_miopen_simple_op<miopen_abs>("abs", make_abs);
 
         add_miopen_extend_op<miopen_leaky_relu, op::leaky_relu>("leaky_relu", make_leaky_relu);
@@ -113,6 +112,7 @@ struct miopen_apply
         add_generic_op<hip_sqdiff>("sqdiff");
         add_generic_op<hip_relu>("relu");
         add_generic_op<hip_sign>("sign");
+        add_generic_op<hip_sigmoid>("sigmoid");
 
         add_extend_op<miopen_gemm, op::dot>("dot");
         add_extend_op<miopen_contiguous, op::contiguous>("contiguous");

src/targets/gpu/sigmoid.cpp

-#include <migraphx/gpu/sigmoid.hpp>
-#include <migraphx/gpu/context.hpp>
-
-namespace migraphx {
-inline namespace MIGRAPHX_INLINE_NS {
-namespace gpu {
-
-shape miopen_sigmoid::compute_shape(const std::vector<shape>& inputs) const
-{
-    check_shapes{inputs, *this}.has(2).not_broadcasted();
-    return inputs.at(1);
-}
-
-argument miopen_sigmoid::compute(context& ctx,
-                                 const shape& output_shape,
-                                 const std::vector<argument>& args) const
-{
-    float alpha = 1;
-    float beta  = 0;
-    auto x_desc = make_tensor(args[0].get_shape());
-    auto y_desc = make_tensor(output_shape);
-    miopenActivationForward(ctx.get_stream().get_miopen(),
-                            ad.get(),
-                            &alpha,
-                            x_desc.get(),
-                            args[0].implicit(),
-                            &beta,
-                            y_desc.get(),
-                            args[1].implicit());
-
-    return args[1];
-}
-
-} // namespace gpu
-} // namespace MIGRAPHX_INLINE_NS
-} // namespace migraphx