diff options
Diffstat (limited to 'llvm/cmake/modules/HandleLLVMOptions.cmake')
| -rw-r--r-- | llvm/cmake/modules/HandleLLVMOptions.cmake | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake index eca2962cf820..745a8354f118 100644 --- a/llvm/cmake/modules/HandleLLVMOptions.cmake +++ b/llvm/cmake/modules/HandleLLVMOptions.cmake @@ -36,7 +36,7 @@ string(TOUPPER "${LLVM_ENABLE_LTO}" uppercase_LLVM_ENABLE_LTO) # The following only works with the Ninja generator in CMake >= 3.0. set(LLVM_PARALLEL_COMPILE_JOBS "" CACHE STRING "Define the maximum number of concurrent compilation jobs (Ninja only).") -if(LLVM_RAM_PER_COMPILE_JOB OR LLVM_RAM_PER_LINK_JOB) +if(LLVM_RAM_PER_COMPILE_JOB OR LLVM_RAM_PER_LINK_JOB OR LLVM_RAM_PER_TABLEGEN_JOB) cmake_host_system_information(RESULT available_physical_memory QUERY AVAILABLE_PHYSICAL_MEMORY) cmake_host_system_information(RESULT number_of_logical_cores QUERY NUMBER_OF_LOGICAL_CORES) endif() @@ -86,6 +86,28 @@ elseif(LLVM_PARALLEL_LINK_JOBS) message(WARNING "Job pooling is only available with Ninja generators.") endif() +set(LLVM_PARALLEL_TABLEGEN_JOBS "" CACHE STRING + "Define the maximum number of concurrent tablegen jobs (Ninja only).") +if(LLVM_RAM_PER_TABLEGEN_JOB) + math(EXPR jobs_with_sufficient_memory "${available_physical_memory} / ${LLVM_RAM_PER_TABLEGEN_JOB}" OUTPUT_FORMAT DECIMAL) + if (jobs_with_sufficient_memory LESS 1) + set(jobs_with_sufficient_memory 1) + endif() + if (jobs_with_sufficient_memory LESS number_of_logical_cores) + set(LLVM_PARALLEL_TABLEGEN_JOBS "${jobs_with_sufficient_memory}") + else() + set(LLVM_PARALLEL_TABLEGEN_JOBS "${number_of_logical_cores}") + endif() +endif() +if(LLVM_PARALLEL_TABLEGEN_JOBS) + if(NOT CMAKE_GENERATOR MATCHES "Ninja") + message(WARNING "Job pooling is only available with Ninja generators.") + else() + set_property(GLOBAL APPEND PROPERTY JOB_POOLS tablegen_job_pool=${LLVM_PARALLEL_TABLEGEN_JOBS}) + # Job pool for tablegen is set on the add_custom_command + endif() +endif() + if( LLVM_ENABLE_ASSERTIONS ) # MSVC doesn't like _DEBUG on release builds. See PR 4379. if( NOT MSVC ) |