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https://github.com/capstone-engine/llvm-capstone.git
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f1ac0fcf56
Summary: With small integer optimization (short: sio) enabled, ISL uses 32 bit integers for its arithmetic and only falls back to a big integer library (in the case of Polly: IMath) if an operation's result is too large. This gives a massive performance boost for most application using ISL. For instance, experiments with ppcg (polyhedral source-to-source compiler) show speed-ups of 5.8 (compared to plain IMath), respectively 2.7 (compared to GMP). In Polly, a smaller fraction of the total compile time is taken by ISL, but the speed-ups are still very significant. The buildbots measure compilation speed-up up to 1.8 (oourafft, floyd-warshall, symm). All Polybench benchmarks compile in at least 9% less time, and about 20% less on average. Detailed Polybench compile time results (median of 10): correlation -25.51% covariance -24.82% 2mm -26.64% 3mm -28.69% atax -13.70% bicg -10.78% cholesky -40.67% doitgen -11.60% gemm -11.54% gemver -10.63% gesummv -11.54% mvt -9.43% symm -41.25% syr2k -14.71% syrk -14.52% trisolv -17.65% trmm -9.78% durbin -19.32% dynprog -9.09% gramschmidt -15.38% lu -21.77% floyd-warshall -42.71% reg_detect -41.17% adi -36.69% fdtd-2d -32.61% fdtd-apml -21.90% jacobi-1d-imper -9.41% jacobi-2d-imper -27.65% seidel-2d -31.00% Reviewers: grosser Reviewed By: grosser Subscribers: Meinersbur, llvm-commits, pollydev Projects: #polly Differential Revision: http://reviews.llvm.org/D10506 llvm-svn: 240689
109 lines
4.2 KiB
Plaintext
109 lines
4.2 KiB
Plaintext
dnl **************************************************************************
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dnl * Initialize
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dnl **************************************************************************
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AC_INIT([Polly],[0.01],[polly-dev@googlegroups.com])
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dnl Identify where LLVM source tree is
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LLVM_SRC_ROOT="`(cd $srcdir/../..; pwd)`"
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LLVM_OBJ_ROOT="`(cd ../..; pwd)`"
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dnl Tell autoconf that this is an LLVM project being configured
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dnl This provides the --with-llvmsrc and --with-llvmobj options
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LLVM_CONFIG_PROJECT($LLVM_SRC_ROOT,$LLVM_OBJ_ROOT)
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dnl Tell autoconf that the auxiliary files are actually located in
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dnl the LLVM autoconf directory, not here.
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AC_CONFIG_AUX_DIR($LLVM_SRC/autoconf)
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dnl Indicate that we require autoconf 2.59 or later. Ths is needed because we
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dnl use some autoconf macros only available in 2.59.
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AC_PREREQ(2.59)
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dnl Verify that the source directory is valid
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AC_CONFIG_SRCDIR(["lib/Analysis/ScopInfo.cpp"])
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dnl Configure a common Makefile
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AC_CONFIG_FILES(Makefile.config)
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AC_CONFIG_FILES(Makefile.common)
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dnl Configure project makefiles
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dnl List every Makefile that exists within your source tree
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dnl Quit if the source directory has already been configured.
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dnl NOTE: This relies upon undocumented autoconf behavior.
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if test ${srcdir} != "." ; then
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if test -f ${srcdir}/include/polly/Config/config.h ; then
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AC_MSG_ERROR([Already configured in ${srcdir}])
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fi
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fi
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dnl **************************************************************************
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dnl * Determine which system we are building on
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Check for programs.
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dnl **************************************************************************
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dnl AC_PROG_CPP
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dnl AC_PROG_CC(gcc)
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dnl AC_PROG_CXX(g++)
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dnl **************************************************************************
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dnl * Check for libraries.
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Checks for header files.
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Checks for typedefs, structures, and compiler characteristics.
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Checks for library functions.
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Enable various compile-time options
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dnl **************************************************************************
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dnl **************************************************************************
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dnl * Set the location of various third-party software packages
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dnl **************************************************************************
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dnl Check if CUDA lib there
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dnl Disable the build of polly, even if it is checked out into tools/polly.
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AC_ARG_ENABLE(polly_gpu_codegen,
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AS_HELP_STRING([--enable-polly-gpu-codegen],
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[Enable GPU code generation in Polly(default is NO)]),,
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enableval=default)
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case "$enableval" in
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yes) AC_DEFINE([GPU_CODEGEN],[1], [Define if gpu codegen is enabled]) ;;
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no) ;;
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default) ;;
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*) AC_MSG_ERROR([Invalid setting for --enable-polly-gpu-codegen. Use "yes" or "no"]) ;;
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esac
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find_lib_and_headers([cuda], [cuda.h], [cuda])
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AS_IF([test "x$cuda_found" = "xyes"],
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[AC_DEFINE([CUDALIB_FOUND],[1],[Define if cudalib found])])
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dnl **************************************************************************
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dnl * Create the output files
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dnl **************************************************************************
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dnl Let ISL's configure generate isl_config.h and gitversion.h
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AC_CONFIG_SUBDIRS(lib/External/isl)
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AC_CONFIG_COMMANDS_POST([
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dnl Configure ISL with small integer optimization, but do not add the
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dnl option to config.status as it is mandatory for Polly.
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ac_configure_args="$ac_configure_args --with-int=imath-32"
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])
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dnl This must be last
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AC_CONFIG_HEADERS(include/polly/Config/config.h)
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AC_OUTPUT
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