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llvm-capstone/libclc/CMakeLists.txt
Alan Baker 21427b8eb8 libclc: Add clspv target to libclc 
Add clspv as a new target for libclc. clspv is an open-source compiler that compiles OpenCL C to Vulkan SPIR-V. Compiles for the spir target.

The clspv target differs from the the spirv target in the following ways:
* fma is modified to use uint2 instead of ulong for mantissas. This results in lower performance fma, but provides a implementation that can be used on more Vulkan devices where 64-bit integer support is less common.
* Use of a software implementation of nextafter because the generic implementation depends on nextafter being a defined builtin function for which clspv has no definition.
* Full optimization of the library (-O3) and no conversion to SPIR-V

This library is close to what would be produced by running opt -O3 < builtins.opt.spirv-mesa3d-.bc > builtins.opt.clspv--.bc and continuing the build from that point.

Reviewer: jvesely

Differential Revision: https://reviews.llvm.org/D94013
2021-03-04 00:19:10 -05:00

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cmake_minimum_required(VERSION 3.13.4)
project( libclc VERSION 0.2.0 LANGUAGES CXX )
include( GNUInstallDirs )
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS
amdgcn-amdhsa/lib/SOURCES;
amdgcn/lib/SOURCES;
amdgcn-mesa3d/lib/SOURCES;
amdgpu/lib/SOURCES;
clspv/lib/SOURCES;
generic/lib/SOURCES;
ptx/lib/SOURCES;
ptx-nvidiacl/lib/SOURCES;
r600/lib/SOURCES;
spirv/lib/SOURCES;
spirv64/lib/SOURCES
)
# List of all targets
set( LIBCLC_TARGETS_ALL
amdgcn--
amdgcn--amdhsa
clspv--
r600--
nvptx--
nvptx64--
nvptx--nvidiacl
nvptx64--nvidiacl
spirv-mesa3d-
spirv64-mesa3d-
)
set( LIBCLC_MIN_LLVM "3.9.0" )
set( LIBCLC_TARGETS_TO_BUILD "all"
CACHE STRING "Semicolon-separated list of targets to build, or 'all'." )
option( ENABLE_RUNTIME_SUBNORMAL "Enable runtime linking of subnormal support."
OFF )
if( NOT LLVM_CONFIG )
find_program( LLVM_CONFIG llvm-config )
endif()
execute_process( COMMAND ${LLVM_CONFIG} "--version"
OUTPUT_VARIABLE LLVM_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE )
message( "LLVM version: ${LLVM_VERSION}" )
if( ${LLVM_VERSION} VERSION_LESS ${LIBCLC_MIN_LLVM} )
message( FATAL_ERROR "libclc needs at least LLVM ${LIBCLC_MIN_LLVM}" )
endif()
# mesa3d environment is only available since LLVM 4.0
if( ${LLVM_VERSION} VERSION_GREATER "3.9.0" )
set( LIBCLC_TARGETS_ALL ${LIBCLC_TARGETS_ALL} amdgcn-mesa-mesa3d )
endif()
if( LIBCLC_TARGETS_TO_BUILD STREQUAL "all" )
set( LIBCLC_TARGETS_TO_BUILD ${LIBCLC_TARGETS_ALL} )
endif()
execute_process( COMMAND ${LLVM_CONFIG} "--system-libs"
OUTPUT_VARIABLE LLVM_SYSTEM_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE )
separate_arguments( LLVM_SYSTEM_LIBS )
execute_process( COMMAND ${LLVM_CONFIG} "--libs" "core" "bitreader" "bitwriter"
OUTPUT_VARIABLE LLVM_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE )
separate_arguments( LLVM_LIBS )
execute_process( COMMAND ${LLVM_CONFIG} "--libdir"
OUTPUT_VARIABLE LLVM_LIBDIR
OUTPUT_STRIP_TRAILING_WHITESPACE )
execute_process( COMMAND ${LLVM_CONFIG} "--ldflags"
OUTPUT_VARIABLE LLVM_LD_FLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE )
execute_process( COMMAND ${LLVM_CONFIG} "--cxxflags"
OUTPUT_VARIABLE LLVM_CXX_FLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE )
separate_arguments( LLVM_CXX_FLAGS )
execute_process( COMMAND ${LLVM_CONFIG} "--bindir"
OUTPUT_VARIABLE LLVM_BINDIR
OUTPUT_STRIP_TRAILING_WHITESPACE )
# These were not properly reported in early LLVM and we don't need them
list( APPEND LLVM_CXX_FLAGS -fno-rtti -fno-exceptions )
# Print LLVM variables
message( "LLVM system libs: ${LLVM_SYSTEM_LIBS}" )
message( "LLVM libs: ${LLVM_LIBS}" )
message( "LLVM libdir: ${LLVM_LIBDIR}" )
message( "LLVM bindir: ${LLVM_BINDIR}" )
message( "LLVM ld flags: ${LLVM_LD_FLAGS}" )
message( "LLVM cxx flags: ${LLVM_CXX_FLAGS}" )
message( "" )
find_program( LLVM_CLANG clang PATHS ${LLVM_BINDIR} NO_DEFAULT_PATH )
find_program( LLVM_AS llvm-as PATHS ${LLVM_BINDIR} NO_DEFAULT_PATH )
find_program( LLVM_LINK llvm-link PATHS ${LLVM_BINDIR} NO_DEFAULT_PATH )
find_program( LLVM_OPT opt PATHS ${LLVM_BINDIR} NO_DEFAULT_PATH )
find_program( LLVM_SPIRV llvm-spirv PATHS ${LLVM_BINDIR} NO_DEFAULT_PATH )
# Print toolchain
message( "clang: ${LLVM_CLANG}" )
message( "llvm-as: ${LLVM_AS}" )
message( "llvm-link: ${LLVM_LINK}" )
message( "opt: ${LLVM_OPT}" )
message( "llvm-spirv: ${LLVM_SPIRV}" )
message( "" )
if( NOT LLVM_CLANG OR NOT LLVM_OPT OR NOT LLVM_AS OR NOT LLVM_LINK )
message( FATAL_ERROR "toolchain incomplete!" )
endif()
list( SORT LIBCLC_TARGETS_TO_BUILD )
if( "spirv-mesa3d-" IN_LIST LIBCLC_TARGETS_TO_BUILD OR "spirv64-mesa3d-" IN_LIST LIBCLC_TARGETS_TO_BUILD )
if( NOT LLVM_SPIRV )
message( FATAL_ERROR "SPIR-V targets requested, but spirv-tools is not installed" )
endif()
endif()
set( CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake )
set( CMAKE_CLC_COMPILER ${LLVM_CLANG} )
set( CMAKE_CLC_ARCHIVE ${LLVM_LINK} )
set( CMAKE_LLAsm_PREPROCESSOR ${LLVM_CLANG} )
set( CMAKE_LLAsm_COMPILER ${LLVM_AS} )
set( CMAKE_LLAsm_ARCHIVE ${LLVM_LINK} )
enable_language( CLC LLAsm )
# Construct LLVM version define
string( REPLACE "." ";" LLVM_VERSION_LIST ${LLVM_VERSION} )
list( GET LLVM_VERSION_LIST 0 LLVM_MAJOR )
list( GET LLVM_VERSION_LIST 1 LLVM_MINOR )
set( LLVM_VERSION_DEFINE "-DHAVE_LLVM=0x${LLVM_MAJOR}0${LLVM_MINOR}" )
# This needs to be set before any target that needs it
link_directories( ${LLVM_LIBDIR} )
# Setup prepare_builtins tools
add_executable( prepare_builtins utils/prepare-builtins.cpp )
target_compile_options( prepare_builtins PRIVATE ${LLVM_CXX_FLAGS} )
target_compile_definitions( prepare_builtins PRIVATE ${LLVM_VERSION_DEFINE} )
target_link_libraries( prepare_builtins PRIVATE ${LLVM_LIBS} )
target_link_libraries( prepare_builtins PRIVATE ${LLVM_SYSTEM_LIBS} )
# Setup arch devices
set( r600--_devices cedar cypress barts cayman )
set( amdgcn--_devices tahiti )
set( amdgcn-mesa-mesa3d_devices ${amdgcn--_devices} )
set( amdgcn--amdhsa_devices none )
set( clspv--_devices none )
set( nvptx--_devices none )
set( nvptx64--_devices none )
set( nvptx--nvidiacl_devices none )
set( nvptx64--nvidiacl_devices none )
set( spirv-mesa3d-_devices none )
set( spirv64-mesa3d-_devices none )
# Setup aliases
set( cedar_aliases palm sumo sumo2 redwood juniper )
set( cypress_aliases hemlock )
set( barts_aliases turks caicos )
set( cayman_aliases aruba )
set( tahiti_aliases pitcairn verde oland hainan bonaire kabini kaveri hawaii
mullins tonga iceland carrizo fiji stoney polaris10 polaris11 )
# Support for gfx9 was added in LLVM 5.0 (r295554)
if( ${LLVM_VERSION} VERSION_GREATER "4.99.99" )
set( tahiti_aliases ${tahiti_aliases} gfx900 gfx902 )
endif()
# Support for Vega12 and Vega20 was added in LLVM 7 (r331215)
if( ${LLVM_VERSION} VERSION_GREATER "6.99.99" )
set( tahiti_aliases ${tahiti_aliases} gfx904 gfx906 )
endif()
# pkg-config file
configure_file( libclc.pc.in libclc.pc @ONLY )
install( FILES ${CMAKE_CURRENT_BINARY_DIR}/libclc.pc DESTINATION ${CMAKE_INSTALL_DATADIR}/pkgconfig )
install( DIRECTORY generic/include/clc DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} )
if( ENABLE_RUNTIME_SUBNORMAL )
add_library( subnormal_use_default STATIC
generic/lib/subnormal_use_default.ll )
add_library( subnormal_disable STATIC
generic/lib/subnormal_disable.ll )
install( TARGETS subnormal_use_default subnormal_disable ARCHIVE
DESTINATION ${CMAKE_INSTALL_DATADIR}/clc )
endif()
find_package( Python3 REQUIRED COMPONENTS Interpreter )
file( TO_CMAKE_PATH ${CMAKE_SOURCE_DIR}/generic/lib/gen_convert.py script_loc )
add_custom_command(
OUTPUT convert.cl
COMMAND ${Python3_EXECUTABLE} ${script_loc} > convert.cl
DEPENDS ${script_loc} )
add_custom_target( "generate_convert.cl" DEPENDS convert.cl )
enable_testing()
foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
message( "BUILDING ${t}" )
string( REPLACE "-" ";" TRIPLE ${t} )
list( GET TRIPLE 0 ARCH )
list( GET TRIPLE 1 VENDOR )
list( GET TRIPLE 2 OS )
set( dirs )
if ( NOT ${ARCH} STREQUAL spirv AND NOT ${ARCH} STREQUAL spirv64 AND NOT ${ARCH} STREQUAL clspv )
LIST( APPEND dirs generic )
endif()
if( ${ARCH} STREQUAL r600 OR ${ARCH} STREQUAL amdgcn )
list( APPEND dirs amdgpu )
endif()
#nvptx is special
if( ${ARCH} STREQUAL nvptx OR ${ARCH} STREQUAL nvptx64 )
set( DARCH ptx )
else()
set( DARCH ${ARCH} )
endif()
# Enumerate SOURCES* files
set( source_list )
foreach( l ${dirs} ${DARCH} ${DARCH}-${OS} ${DARCH}-${VENDOR}-${OS} )
foreach( s "SOURCES" "SOURCES_${LLVM_MAJOR}.${LLVM_MINOR}" )
file( TO_CMAKE_PATH ${l}/lib/${s} file_loc )
file( TO_CMAKE_PATH ${CMAKE_SOURCE_DIR}/${file_loc} loc )
# Prepend the location to give higher priority to
# specialized implementation
if( EXISTS ${loc} )
set( source_list ${file_loc} ${source_list} )
endif()
endforeach()
endforeach()
# Add the generated convert.cl here to prevent adding
# the one listed in SOURCES
if( NOT ${ARCH} STREQUAL "spirv" AND NOT ${ARCH} STREQUAL "spirv64" AND NOT ${ARCH} STREQUAL "clspv" )
set( rel_files convert.cl )
set( objects convert.cl )
if( NOT ENABLE_RUNTIME_SUBNORMAL )
list( APPEND rel_files generic/lib/subnormal_use_default.ll )
endif()
else()
set( rel_files )
set( objects )
endif()
foreach( l ${source_list} )
file( READ ${l} file_list )
string( REPLACE "\n" ";" file_list ${file_list} )
get_filename_component( dir ${l} DIRECTORY )
foreach( f ${file_list} )
list( FIND objects ${f} found )
if( found EQUAL -1 )
list( APPEND objects ${f} )
list( APPEND rel_files ${dir}/${f} )
# FIXME: This should really go away
file( TO_CMAKE_PATH ${CMAKE_SOURCE_DIR}/${dir}/${f} src_loc )
get_filename_component( fdir ${src_loc} DIRECTORY )
set_source_files_properties( ${dir}/${f}
PROPERTIES COMPILE_FLAGS "-I ${fdir}" )
endif()
endforeach()
endforeach()
foreach( d ${${t}_devices} )
# Some targets don't have a specific GPU to target
if( ${d} STREQUAL "none" OR ${ARCH} STREQUAL "spirv" OR ${ARCH} STREQUAL "spirv64" )
set( mcpu )
set( arch_suffix "${t}" )
else()
set( mcpu "-mcpu=${d}" )
set( arch_suffix "${d}-${t}" )
endif()
message( " DEVICE: ${d} ( ${${d}_aliases} )" )
if ( ${ARCH} STREQUAL "spirv" OR ${ARCH} STREQUAL "spirv64" )
if( ${ARCH} STREQUAL "spirv" )
set( t "spir--" )
else()
set( t "spir64--" )
endif()
set( build_flags -O0 -finline-hint-functions )
set( opt_flags )
set( spvflags --spirv-max-version=1.1 )
elseif( ${ARCH} STREQUAL "clspv" )
set( t "spir--" )
set( build_flags )
set( opt_flags -O3 )
else()
set( build_flags )
set( opt_flags -O3 )
endif()
add_library( builtins.link.${arch_suffix} STATIC ${rel_files} )
# Make sure we depend on the pseudo target to prevent
# multiple invocations
add_dependencies( builtins.link.${arch_suffix}
generate_convert.cl )
# CMake will turn this include into absolute path
target_include_directories( builtins.link.${arch_suffix} PRIVATE
"generic/include" )
target_compile_definitions( builtins.link.${arch_suffix} PRIVATE
"__CLC_INTERNAL" )
string( TOUPPER "-DCLC_${ARCH}" CLC_TARGET_DEFINE )
target_compile_definitions( builtins.link.${arch_suffix} PRIVATE
${CLC_TARGET_DEFINE} )
target_compile_options( builtins.link.${arch_suffix} PRIVATE -target
${t} ${mcpu} -fno-builtin -nostdlib ${build_flags} )
set_target_properties( builtins.link.${arch_suffix} PROPERTIES
LINKER_LANGUAGE CLC )
set( obj_suffix ${arch_suffix}.bc )
# Add opt target
add_custom_command( OUTPUT "builtins.opt.${obj_suffix}"
COMMAND ${LLVM_OPT} ${opt_flags} -o
"builtins.opt.${obj_suffix}"
"builtins.link.${obj_suffix}"
DEPENDS "builtins.link.${arch_suffix}" )
add_custom_target( "opt.${obj_suffix}" ALL
DEPENDS "builtins.opt.${obj_suffix}" )
if( ${ARCH} STREQUAL "spirv" OR ${ARCH} STREQUAL "spirv64" )
set( spv_suffix ${arch_suffix}.spv )
add_custom_command( OUTPUT "${spv_suffix}"
COMMAND ${LLVM_SPIRV} ${spvflags}
-o "${spv_suffix}"
"builtins.link.${obj_suffix}"
DEPENDS "builtins.link.${arch_suffix}" )
add_custom_target( "prepare-${spv_suffix}" ALL
DEPENDS "${spv_suffix}" )
install( FILES ${CMAKE_CURRENT_BINARY_DIR}/${spv_suffix}
DESTINATION ${CMAKE_INSTALL_DATADIR}/clc )
else()
# Add prepare target
add_custom_command( OUTPUT "${obj_suffix}"
COMMAND prepare_builtins -o
"${obj_suffix}"
"builtins.opt.${obj_suffix}"
DEPENDS "opt.${obj_suffix}"
"builtins.opt.${obj_suffix}"
prepare_builtins )
add_custom_target( "prepare-${obj_suffix}" ALL
DEPENDS "${obj_suffix}" )
# nvptx-- targets don't include workitem builtins
if( NOT ${t} MATCHES ".*ptx.*--$" )
add_test( NAME external-calls-${obj_suffix}
COMMAND ./check_external_calls.sh ${CMAKE_CURRENT_BINARY_DIR}/${obj_suffix}
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} )
set_tests_properties( external-calls-${obj_suffix}
PROPERTIES ENVIRONMENT "LLVM_CONFIG=${LLVM_CONFIG}" )
endif()
install( FILES ${CMAKE_CURRENT_BINARY_DIR}/${obj_suffix} DESTINATION ${CMAKE_INSTALL_DATADIR}/clc )
foreach( a ${${d}_aliases} )
set( alias_suffix "${a}-${t}.bc" )
add_custom_target( ${alias_suffix} ALL
COMMAND ${CMAKE_COMMAND} -E
create_symlink ${obj_suffix}
${alias_suffix}
DEPENDS "prepare-${obj_suffix}" )
install( FILES ${CMAKE_CURRENT_BINARY_DIR}/${alias_suffix} DESTINATION ${CMAKE_INSTALL_DATADIR}/clc )
endforeach( a )
endif()
endforeach( d )
endforeach( t )
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