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LLVM developed a new pass manager - https://llvm.org/docs/NewPassManager.html - to overcome some of the limitations of LegacyPassManager. It offers improved optimization performance by reusing analysis across all types and levels of optimization passes. It also appears to be better maintained in future releases of LLVM. Switches to using the new PassManager via PassBuilder and a ModulePassManager. Breaks out PruneModule into a separate FunctionPruneTime timer to more easily track any regressions there. Change-Id: I947a5b067da50c18f62c3f9af9876463e542f58a Reviewed-on: http://gerrit.cloudera.org:8080/20014 Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Michael Smith <michael.smith@cloudera.com>
107 lines
3.7 KiB
CMake
107 lines
3.7 KiB
CMake
##############################################################################
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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##############################################################################
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# Find the native LLVM includes and library
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#
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# LLVM_ROOT - hints the search path
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# LLVM_INCLUDE_DIR - where to find llvm include files
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# LLVM_LIBRARY_DIR - where to find llvm libs
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# LLVM_LFLAGS - llvm linker flags
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# LLVM_MODULE_LIBS - list of llvm libs for working with modules.
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# First look in LLVM_ROOT then ENV{LLVM_HOME} then system path.
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find_program(LLVM_CONFIG_EXECUTABLE llvm-config
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PATHS
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${LLVM_ROOT}/bin
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$ENV{LLVM_HOME}
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NO_DEFAULT_PATH
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)
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if (LLVM_CONFIG_EXECUTABLE STREQUAL "LLVM_CONFIG_EXECUTABLE-NOTFOUND")
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message(FATAL_ERROR "Could not find llvm-config")
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endif ()
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# Check LLVM Version to be compatible
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execute_process(
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COMMAND ${LLVM_CONFIG_EXECUTABLE} --version
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OUTPUT_VARIABLE LLVM_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if (NOT "${LLVM_VERSION}" VERSION_EQUAL "$ENV{IMPALA_LLVM_VERSION}")
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message(FATAL_ERROR
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"LLVM version must be $ENV{IMPALA_LLVM_VERSION}. Found version: ${LLVM_VERSION}")
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endif()
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message(STATUS "LLVM llvm-config found at: ${LLVM_CONFIG_EXECUTABLE}")
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execute_process(
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COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
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OUTPUT_VARIABLE LLVM_INCLUDE_DIR
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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execute_process(
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COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir
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OUTPUT_VARIABLE LLVM_LIBRARY_DIR
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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execute_process(
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COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags
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OUTPUT_VARIABLE LLVM_LFLAGS
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# TODO: this does not work well. the config file will output -I/<include path> and
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# also -DNDEBUG. I've hard coded the #define that are necessary but we should make
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# this better. The necesesary flags are only #defines so maybe just def/undef those
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# around #include to llvm headers?
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#execute_process(
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# COMMAND ${LLVM_CONFIG_EXECUTABLE} --cxxflags
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# OUTPUT_VARIABLE LLVM_CFLAGS
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# OUTPUT_STRIP_TRAILING_WHITESPACE
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#)
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set(LLVM_CFLAGS
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"-D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS")
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# Get the link libs we need. llvm has many and we don't want to link all of the libs
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# if we don't need them.
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execute_process(
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COMMAND ${LLVM_CONFIG_EXECUTABLE} --libnames core mcjit native ipo bitreader target linker analysis debuginfodwarf passes
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OUTPUT_VARIABLE LLVM_MODULE_LIBS
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# CMake really doesn't like adding link directories and wants absolute paths
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# Reconstruct it with LLVM_MODULE_LIBS and LLVM_LIBRARY_DIR
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string(REPLACE " " ";" LIBS_LIST ${LLVM_MODULE_LIBS})
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set (LLVM_MODULE_LIBS "")
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foreach (LIB ${LIBS_LIST})
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set(LLVM_MODULE_LIBS ${LLVM_MODULE_LIBS} "${LLVM_LIBRARY_DIR}/${LIB}")
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endforeach(LIB)
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message(STATUS "LLVM include dir: ${LLVM_INCLUDE_DIR}")
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message(STATUS "LLVM lib dir: ${LLVM_LIBRARY_DIR}")
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if (CMAKE_DEBUG)
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message(STATUS "LLVM libs: ${LLVM_MODULE_LIBS}")
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endif()
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