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#=========================== begin_copyright_notice ============================
#
# Copyright (C) 2021-2025 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
#============================ end_copyright_notice =============================
include_guard(DIRECTORY)
if(NOT IGC_BUILD__LLVM_SOURCES)
message(STATUS "[IGC] IGC will take prebuilt LLVM")
message(STATUS "[IGC] Searching for prebuilt LLVM in ${LLVM_ROOT} and system directories")
find_package(LLVM ${IGC_OPTION__LLVM_PREFERRED_VERSION}
REQUIRED
PATHS ${LLVM_ROOT}/bin_and_cmake
)
message(STATUS "[IGC] Found LLVM: ${LLVM_DIR}")
set(LLVM_DIR "${LLVM_DIR}" PARENT_SCOPE)
set(LLVM_DIR_CONFIGURATION_ADJUSTED "${LLVM_DIR}/../$<$<CONFIG:Debug>:Debug>$<$<CONFIG:Release>:Release>$<$<CONFIG:ReleaseInternal>:Release>/${cpuSuffix}/$<$<CONFIG:Debug>:Debug>$<$<CONFIG:Release>:Release>$<$<CONFIG:ReleaseInternal>:Release>")
# Tell the build that we are using prebuilds.
set(IGC_BUILD__LLVM_PREBUILDS ON)
set(IGC_OPTION__LLDELF_LIB_DIR ${LLVM_ROOT} PARENT_SCOPE)
endif()
# Include commonly used modules.
set(CMAKE_MODULE_PATH
${LLVM_CMAKE_DIR}
${CMAKE_MODULE_PATH}
)
if(IGC_OPTION__LLVM_MODE STREQUAL PREBUILDS_MODE_NAME AND WIN32)
set(IGC_OPTION__LLVM_MODE "${IGC_OPTION__LLVM_MODE}" CACHE STRING "")
set(IGC_OPTION__LLD_DIR "${LLVM_DIR}")
set(IGC_OPTION__LLDELF_H_DIR "${DEFAULT_IGC_LLVM_SOURCES_DIR}/lld")
#No need to use anything but Release versions of these binaries.
#This should speed up overall build time
set(LLVM_LINK_EXE "${LLVM_DIR}/bin/llvm-link.exe" CACHE STRING "")
set(LLVM_AS_EXE "${LLVM_DIR}/bin/llvm-as.exe" CACHE STRING "")
set(LLVM_OPT_EXE "${LLVM_DIR}/bin/opt.exe" CACHE STRING "")
set(LLVM_TABLEGEN_EXE "${LLVM_DIR}/bin/llvm-tblgen.exe" CACHE STRING "")
set(LLVM_INCLUDE_DIRS "${LLVM_DIR_CONFIGURATION_ADJUSTED}/include;${DEFAULT_IGC_LLVM_SOURCES_DIR}/llvm/include")
set(LLVM_INCLUDE_DIRS "${LLVM_INCLUDE_DIRS}" PARENT_SCOPE)
else()
set(LLVM_LINK_EXE "llvm-link" CACHE STRING "")
set(LLVM_AS_EXE "llvm-as" CACHE STRING "")
set(LLVM_OPT_EXE "opt" CACHE STRING "")
set(LLVM_TABLEGEN_EXE "llvm-tblgen")
if(CMAKE_CROSSCOMPILING)
if(DEFINED LLVM_TABLEGEN)
set(LLVM_TABLEGEN_EXE ${LLVM_TABLEGEN})
else()
find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH)
endif()
endif()
endif()
include(AddLLVM)
include(TableGen)
# Set LLVM_TABLEGEN_FLAGS manually based on include dirs.
list(TRANSFORM LLVM_INCLUDE_DIRS PREPEND "-I=" OUTPUT_VARIABLE LLVM_TABLEGEN_FLAGS)
# Add major version definition for llvm wrapper.
add_compile_definitions(LLVM_VERSION_MAJOR=${LLVM_VERSION_MAJOR})
set(IGC_BUILD__OPAQUE_POINTERS_ENABLE_OPT "-opaque-pointers=1")
set(IGC_BUILD__OPAQUE_POINTERS_DISABLE_OPT "-opaque-pointers=0")
set(IGC_BUILD__OPAQUE_POINTERS_ENABLE_CLANG "-opaque-pointers")
if(IGC_BUILD__CLANG_VERSION_MAJOR GREATER_EQUAL 15)
set(IGC_BUILD__OPAQUE_POINTERS_DISABLE_CLANG "-no-opaque-pointers")
endif()
# Based on the default behavior for opaque/typed pointers, propagate
# corresponding options to all the in-tree calls of clang/opt tools.
if(IGC_OPTION__API_ENABLE_OPAQUE_POINTERS)
if(LLVM_VERSION_MAJOR GREATER_EQUAL 14)
set(IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_OPT ${IGC_BUILD__OPAQUE_POINTERS_ENABLE_OPT})
set(IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_CLANG ${IGC_BUILD__OPAQUE_POINTERS_ENABLE_CLANG})
add_compile_definitions(__IGC_OPAQUE_POINTERS_API_ENABLED=true)
endif()
else(IGC_OPTION__API_ENABLE_OPAQUE_POINTERS)
set(IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_OPT ${IGC_BUILD__OPAQUE_POINTERS_DISABLE_OPT})
set(IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_CLANG ${IGC_BUILD__OPAQUE_POINTERS_DISABLE_CLANG})
add_compile_definitions(__IGC_OPAQUE_POINTERS_API_ENABLED=false)
endif()
message("OPT OpaquePtrs Status: ${IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_OPT}")
message("Clang OpaquePtrs Status: ${IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_CLANG}")
add_compile_definitions(__IGC_OPAQUE_POINTERS_DEFAULT_ARG_CLANG="${IGC_BUILD__OPAQUE_POINTERS_DEFAULT_ARG_CLANG}")
# Include LLVM headers as system ones.
# This will disable warnings on linux.
include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
# Disable warnings from LLVM headers for msvc.
if(MSVC_IDE)
add_compile_options(/experimental:external)
foreach(INCDIR IN LISTS LLVM_INCLUDE_DIRS)
add_compile_options("SHELL:/external:I ${INCDIR}")
endforeach()
add_compile_options(/external:W0)
endif()
if(IGC_OPTION__ENABLE_LIT_TESTS)
# Lit testing infrastructure. Find lit tools for tests.
igc_find_external_lit()
endif()
set(IGC_LLVM_COMPONENTS
AggressiveInstCombine
Analysis
AsmParser
BinaryFormat
BitReader
BitWriter
CodeGen
Core
Demangle
InstCombine
Instrumentation
Ipo
IRReader
Linker
MC
MCParser
ObjCARCOpts
Object
ProfileData
Remarks
ScalarOpts
Support
Target
TransformUtils
Vectorize
)
list(APPEND IGC_LLVM_COMPONENTS
InstCombine
)
if(LLVM_VERSION_MAJOR GREATER_EQUAL 9)
list(APPEND IGC_LLVM_COMPONENTS
BitstreamReader
)
endif()
igc_get_llvm_targets(IGC_BUILD__LLVM_LIBS_TO_LINK ${IGC_LLVM_COMPONENTS})
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