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Use optimized kernels when available in top-level selective build #14203

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Merged
merged 1 commit into from
Sep 11, 2025
Merged

Use optimized kernels when available in top-level selective build #14203

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23 changes: 21 additions & 2 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -926,6 +926,19 @@ if(NOT EXECUTORCH_SELECT_OPS_YAML STREQUAL ""
OR NOT EXECUTORCH_SELECT_OPS_LIST STREQUAL ""
OR NOT EXECUTORCH_SELECT_OPS_MODEL STREQUAL ""
)
# Use optimized kernels when available.
if(EXECUTORCH_BUILD_KERNELS_OPTIMIZED)
set(_selected_kernel_functions_yaml
${CMAKE_CURRENT_BINARY_DIR}/configurations/merged.yaml
)
set(_selected_kernel_libs "optimized_kernels" "optimized_portable_kernels")
else()
set(_selected_kernel_functions_yaml
${EXECUTORCH_ROOT}/kernels/portable/functions.yaml
)
set(_selected_kernel_libs "portable_kernels")
endif()

gen_selected_ops(
LIB_NAME
"executorch_selected_kernels"
Expand All @@ -945,7 +958,7 @@ if(NOT EXECUTORCH_SELECT_OPS_YAML STREQUAL ""
LIB_NAME
"executorch_selected_kernels"
FUNCTIONS_YAML
${EXECUTORCH_ROOT}/kernels/portable/functions.yaml
${_selected_kernel_functions_yaml}
CUSTOM_OPS_YAML
""
DTYPE_SELECTIVE_BUILD
Expand All @@ -956,13 +969,19 @@ if(NOT EXECUTORCH_SELECT_OPS_YAML STREQUAL ""
LIB_NAME
"executorch_selected_kernels"
KERNEL_LIBS
"portable_kernels"
${_selected_kernel_libs}
DEPS
executorch_core
DTYPE_SELECTIVE_BUILD
"${EXECUTORCH_ENABLE_DTYPE_SELECTIVE_BUILD}"
)
list(APPEND _executorch_kernels executorch_selected_kernels)

install(
TARGETS executorch_selected_kernels
EXPORT ExecuTorchTargets
DESTINATION lib
)
else()
# No selective build - link the full library.
if(EXECUTORCH_BUILD_KERNELS_OPTIMIZED)
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6 changes: 6 additions & 0 deletions tools/cmake/Codegen.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -342,6 +342,12 @@ function(merge_yaml)
DEPENDS ${GEN_FUNCTIONS_YAML} ${GEN_FALLBACK_YAML}
WORKING_DIRECTORY ${EXECUTORCH_ROOT}
)

# Mark the file as generated to allow it to be referenced from other
# CMakeLists in the project.
set_source_files_properties(
${GEN_OUTPUT_DIR}/merged.yaml PROPERTIES GENERATED TRUE
)
endfunction()

# Append the file list in the variable named `name` in build/build_variables.bzl
Expand Down
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