Use new API to register custom ops for llama model

CMakeLists.txt

@@ -543,7 +543,7 @@ if(EXECUTORCH_BUILD_PYBIND)
   endif()
 
   if(EXECUTORCH_BUILD_CUSTOM)
-    list(APPEND _dep_libs custom_ops_lib)
+    list(APPEND _dep_libs custom_ops)
   endif()
 
   # compile options for pybind

examples/models/llama2/CMakeLists.txt

@@ -106,8 +106,8 @@ else()
 endif()
 
 if(EXECUTORCH_BUILD_CUSTOM)
-  target_link_options_shared_lib(custom_ops_lib)
-  list(APPEND link_libraries custom_ops_lib)
+  target_link_options_shared_lib(custom_ops)
+  list(APPEND link_libraries custom_ops)
 endif()
 
 set(XNNPACK_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../../../backends/xnnpack)

examples/models/llama2/custom_ops/CMakeLists.txt

@@ -50,15 +50,6 @@ list(APPEND custom_ops_libs cpuinfo)
 list(APPEND custom_ops_libs cpublas)
 list(APPEND custom_ops_libs eigen_blas)
 
-# Generate C++ bindings to register kernels into both PyTorch (for AOT) and
-# Executorch (for runtime). Here select all ops in optimized.yaml
-set(_yaml "${CMAKE_CURRENT_LIST_DIR}/custom_ops.yaml")
-gen_selected_ops("${_yaml}" "" "")
-
-generate_bindings_for_kernels(FUNCTIONS_YAML
-                              ${CMAKE_CURRENT_SOURCE_DIR}/custom_ops.yaml)
-message("Generated files ${gen_command_sources}")
-
 list(TRANSFORM _custom_ops__srcs PREPEND "${EXECUTORCH_ROOT}/")
 
 # TODO: Consider moving xnnpack/threadpool in a separate lib since it's now used
@@ -70,6 +61,8 @@ if(NOT EXECUTORCH_BUILD_XNNPACK)
     "${CMAKE_CURRENT_SOURCE_DIR}/../../../../backends/xnnpack/threadpool/threadpool.cpp"
     "${CMAKE_CURRENT_SOURCE_DIR}/../../../../backends/xnnpack/threadpool/threadpool_guard.cpp"
   )
+else()
+  list(APPEND custom_ops_libs xnnpack_backend)
 endif()
 
 add_library(custom_ops ${_custom_ops__srcs})
@@ -82,7 +75,4 @@ target_link_libraries(custom_ops PUBLIC ${custom_ops_libs})
 target_compile_options(custom_ops PUBLIC ${_common_compile_options}
                                          -DET_USE_THREADPOOL)
 
-# Build a library for _custom_ops_srcs
-#
-# custom_ops_lib: Register optimized ops kernels into Executorch runtime
-gen_operators_lib("custom_ops_lib" KERNEL_LIBS custom_ops DEPS executorch)
+install(TARGETS custom_ops DESTINATION lib)

examples/models/llama2/custom_ops/op_sdpa.cpp

@@ -6,7 +6,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <executorch/runtime/kernel/kernel_includes.h>
+#include <executorch/examples/models/llama2/custom_ops/op_sdpa.h>
 
 #include <executorch/kernels/optimized/blas/CPUBlas.h>
 #include <executorch/kernels/optimized/vec/functional.h>
@@ -22,6 +22,7 @@
 #include <executorch/backends/xnnpack/threadpool/threadpool.h>
 #include <executorch/extension/parallel/thread_parallel.h>
 #endif
+#include <executorch/extension/kernel_util/make_boxed_from_unboxed_functor.h>
 
 namespace torch {
 namespace executor {
@@ -843,3 +844,8 @@ Tensor& sdpa_with_kv_cache_out(
 } // namespace native
 } // namespace executor
 } // namespace torch
+
+EXECUTORCH_LIBRARY(
+    llama,
+    "sdpa_with_kv_cache.out",
+    torch::executor::native::sdpa_with_kv_cache_out);

examples/models/llama2/custom_ops/op_sdpa.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <executorch/runtime/kernel/kernel_includes.h>
+
+namespace torch {
+namespace executor {
+
+namespace native {
+
+Tensor& sdpa_with_kv_cache_out(
+    RuntimeContext& ctx,
+    const Tensor& q_projected,
+    const Tensor& k_projected,
+    const Tensor& v_projected,
+    Tensor& key_cache,
+    Tensor& value_cache,
+    const int64_t start_pos,
+    const int64_t seq_len,
+    const optional<Tensor>& attn_mask,
+    const double dropout_p,
+    const bool is_causal,
+    // @lint-ignore CLANGTIDY facebook-hte-ParameterMightThrowOnCopy
+    const optional<double> scale,
+    Tensor& output);
+
+Tensor& flash_attention_kernel_out(
+    RuntimeContext& ctx,
+    const Tensor& query,
+    const Tensor& key,
+    const Tensor& value,
+    const optional<Tensor>& attn_mask,
+    const double dropout_p,
+    const bool is_causal,
+    // @lint-ignore CLANGTIDY facebook-hte-ParameterMightThrowOnCopy
+    const optional<double> scale,
+    Tensor& output);
+
+} // namespace native
+} // namespace executor
+} // namespace torch

examples/models/llama2/custom_ops/op_sdpa_test.cpp

@@ -8,7 +8,8 @@
 
 #include <limits>
 
-#include <executorch/examples/models/llama2/custom_ops/FunctionHeaderWrapper.h> // Declares the operator
+#include <executorch/examples/models/llama2/custom_ops/op_sdpa.h>
+
 #include <executorch/kernels/test/TestUtil.h>
 #include <executorch/runtime/core/exec_aten/exec_aten.h>
 #include <executorch/runtime/core/exec_aten/testing_util/tensor_factory.h>
@@ -28,7 +29,7 @@ exec_aten::Tensor op_scaled_dot_product_attention(
     exec_aten::optional<double> scale,
     exec_aten::Tensor& out) {
   exec_aten::RuntimeContext context{};
-  return torch::executor::llama::sdpa_outf(
+  return torch::executor::native::flash_attention_kernel_out(
       context, query, key, value, attn_mask, dropout_p, is_causal, scale, out);
 }
 

examples/models/llama2/custom_ops/op_sdpa_with_kv_cache_test.cpp

@@ -8,7 +8,7 @@
 
 #include <limits>
 
-#include <executorch/examples/models/llama2/custom_ops/FunctionHeaderWrapper.h> // Declares the operator
+#include <executorch/examples/models/llama2/custom_ops/op_sdpa.h> // Declares the operator
 #include <executorch/kernels/test/TestUtil.h>
 #include <executorch/runtime/core/exec_aten/exec_aten.h>
 #include <executorch/runtime/core/exec_aten/testing_util/tensor_factory.h>
@@ -32,7 +32,7 @@ exec_aten::Tensor op_sdpa_with_kv_cache(
     exec_aten::optional<double> scale,
     exec_aten::Tensor& out) {
   exec_aten::RuntimeContext context{};
-  return torch::executor::llama::sdpa_with_kv_cache_outf(
+  return torch::executor::native::sdpa_with_kv_cache_out(
       context,
       query,
       key,

examples/models/llama2/custom_ops/targets.bzl

@@ -1,49 +1,11 @@
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
-load("@fbsource//xplat/executorch/codegen:codegen.bzl", "et_operator_library", "executorch_generated_lib")
-load("@fbsource//xplat/executorch/kernels/test:util.bzl", "codegen_function_header_wrapper")
-
-def define_tests():
-    codegen_function_header_wrapper("executorch/examples/models/llama2/custom_ops", "custom_ops")
-
-    # In the long run we should really have aten variant available as well
-    deps = [":function_header_wrapper_custom_ops"]
-    generated_lib_and_op_deps = [
-        ":custom_ops",
-        ":sdpa",
-        ":custom_ops_headers",
-    ]
-    runtime.cxx_test(
-        name = "op_sdpa_test",
-        srcs = [
-            "op_sdpa_test.cpp",
-        ],
-        visibility = ["//executorch/..."],
-        deps = [
-            "//executorch/runtime/core/exec_aten:lib",
-            "//executorch/runtime/core/exec_aten/testing_util:tensor_util",
-            "//executorch/kernels/test:test_util",
-        ] + generated_lib_and_op_deps + deps,
-    )
-    runtime.cxx_test(
-        name = "op_sdpa_with_kv_cache_test",
-        srcs = [
-            "op_sdpa_with_kv_cache_test.cpp",
-        ],
-        visibility = ["//executorch/..."],
-        deps = [
-            "//executorch/runtime/core/exec_aten:lib",
-            "//executorch/runtime/core/exec_aten/testing_util:tensor_util",
-            "//executorch/kernels/test:test_util",
-        ] + generated_lib_and_op_deps + deps,
-    )
 
 def define_common_targets():
     """Defines targets that should be shared between fbcode and xplat.
 
     The directory containing this targets.bzl file should also contain both
     TARGETS and BUCK files that call this function.
     """
-
     runtime.python_library(
         name = "llama_custom_ops_aot_lib",
         srcs = [
@@ -58,71 +20,54 @@ def define_common_targets():
         ],
     )
 
-    runtime.export_file(
-        name = "custom_ops.yaml",
-        visibility = [
-            "//executorch/...",
-            "@EXECUTORCH_CLIENTS",
-        ],
-    )
-
-    # ~~~ START of custom ops 1 `my_ops::mul3` library definitions ~~~
-    et_operator_library(
-        name = "sdpa_op",
-        ops = [
-            "llama::sdpa.out",
-        ],
-        define_static_targets = True,
-        visibility = [
-            "//executorch/codegen/...",
-            "@EXECUTORCH_CLIENTS",
-        ],
-    )
-
-    et_operator_library(
-        name = "sdpa_with_kv_cache",
-        ops = [
-            "llama::sdpa_with_kv_cache.out",
-        ],
-        define_static_targets = True,
-        visibility = [
-            "//executorch/codegen/...",
-            "@EXECUTORCH_CLIENTS",
-        ],
-    )
-
     runtime.cxx_library(
-        name = "sdpa",
+        name = "custom_ops",
         srcs = ["op_sdpa.cpp"],
-        deps = [
+        exported_headers = ["op_sdpa.h"],
+        exported_deps = [
             "//executorch/runtime/kernel:kernel_includes",
             "//executorch/kernels/portable/cpu:scalar_utils",
             "//executorch/kernels/optimized:libblas",
             "//executorch/kernels/optimized:libvec",
+            "//executorch/extension/kernel_util:kernel_util",
             "//executorch/extension/parallel:thread_parallel",
             "//executorch/backends/xnnpack/threadpool:threadpool",
         ],
-        compiler_flags = ["-Wno-missing-prototypes"],
+        compiler_flags = ["-Wno-missing-prototypes", "-Wno-global-constructors"],
         visibility = [
             "//executorch/...",
             "//executorch/examples/models/llama2/custom_ops/...",
             "@EXECUTORCH_CLIENTS",
         ],
+        # @lint-ignore BUCKLINT link_whole
+        link_whole = True,
         force_static = True,
     )
 
-    executorch_generated_lib(
-        name = "custom_ops",
+    runtime.cxx_test(
+        name = "op_sdpa_test",
+        srcs = [
+            "op_sdpa_test.cpp",
+        ],
+        visibility = ["//executorch/..."],
         deps = [
-            ":sdpa_op",
-            ":sdpa_with_kv_cache",
-            ":sdpa",
+            "//executorch/runtime/core/exec_aten:lib",
+            "//executorch/runtime/core/exec_aten/testing_util:tensor_util",
+            "//executorch/kernels/test:test_util",
+            ":custom_ops",
         ],
-        custom_ops_yaml_target = ":custom_ops.yaml",
-        visibility = [
-            "//executorch/...",
-            "@EXECUTORCH_CLIENTS",
+    )
+
+    runtime.cxx_test(
+        name = "op_sdpa_with_kv_cache_test",
+        srcs = [
+            "op_sdpa_with_kv_cache_test.cpp",
+        ],
+        visibility = ["//executorch/..."],
+        deps = [
+            "//executorch/runtime/core/exec_aten:lib",
+            "//executorch/runtime/core/exec_aten/testing_util:tensor_util",
+            "//executorch/kernels/test:test_util",
+            ":custom_ops",
         ],
-        define_static_targets = True,
     )
-    define_tests()