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[SYCL][CMake] Add an option to enable IPO for runtime builds #20548

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Merged
merged 2 commits into from
Nov 4, 2025
Merged

[SYCL][CMake] Add an option to enable IPO for runtime builds #20548

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[SYCL][CMake] Add an option to enable IPO for runtime builds
sergey-semenov Oct 13, 2025
b5ee4be
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sergey-semenov Nov 4, 2025
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1 change: 1 addition & 0 deletions sycl/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ option(SYCL_ADD_DEV_VERSION_POSTFIX "Adds -V postfix to version string" ON)
option(SYCL_ENABLE_COVERAGE "Enables code coverage for runtime and unit tests" OFF)
option(SYCL_ENABLE_STACK_PRINTING "Enables stack printing on crashes of SYCL applications" OFF)
option(SYCL_LIB_WITH_DEBUG_SYMBOLS "Builds SYCL runtime libraries with debug symbols" OFF)
option(SYCL_ENABLE_IPO "Builds SYCL runtime libraries with interprocedural optimization" OFF)

if (NOT SYCL_COVERAGE_PATH)
set(SYCL_COVERAGE_PATH "${CMAKE_CURRENT_BINARY_DIR}/profiles")
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16 changes: 16 additions & 0 deletions sycl/source/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#cmake_policy(SET CMP0057 NEW)
#include(AddLLVM)
include(CheckLinkerFlag)
include(CheckIPOSupported)
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/version.rc.in
${CMAKE_CURRENT_BINARY_DIR}/version.rc
Expand All @@ -16,13 +17,24 @@ if (SYCL_ENABLE_XPTI_TRACING)
include_directories(${LLVM_EXTERNAL_XPTI_SOURCE_DIR}/include)
endif()

if(SYCL_ENABLE_IPO)
check_ipo_supported(RESULT SYCL_USE_IPO)
if (NOT SYCL_USE_IPO)
message(WARNING "Interprocedural optimization is not supported by the compiler, disabling")
endif()
endif()

function(add_sycl_rt_library LIB_NAME LIB_OBJ_NAME)
# Add an optional argument so we can get the library name to
# link with for Windows Debug version
cmake_parse_arguments(ARG "" "XPTI_LIB;IMPLIB_NAME" "COMPILE_OPTIONS;SOURCES" ${ARGN})

add_library(${LIB_OBJ_NAME} OBJECT ${ARG_SOURCES})

if(SYCL_USE_IPO)
set_property(TARGET ${LIB_OBJ_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()

# Common compilation step setup

check_cxx_compiler_flag(-Winstantiation-after-specialization
Expand Down Expand Up @@ -79,6 +91,10 @@ function(add_sycl_rt_library LIB_NAME LIB_OBJ_NAME)
$<TARGET_OBJECTS:${LIB_OBJ_NAME}>
${CMAKE_CURRENT_BINARY_DIR}/version.rc)

if(SYCL_USE_IPO)
set_property(TARGET ${LIB_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()

find_package(Threads REQUIRED)

target_link_libraries(${LIB_NAME}
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