GitHub - jwakely/CppPerformanceBenchmarks

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Name		Name	Last commit message	Last commit date
Latest commit History 153 Commits
CMakeLists.txt		CMakeLists.txt
LICENSE.md		LICENSE.md
LICENSE_1_0_0.txt		LICENSE_1_0_0.txt
README.txt		README.txt
absolute_value.cpp		absolute_value.cpp
atol.cpp		atol.cpp
benchmark_algorithms.h		benchmark_algorithms.h
benchmark_containers.h		benchmark_containers.h
benchmark_results.h		benchmark_results.h
benchmark_shared_pde.h		benchmark_shared_pde.h
benchmark_shared_tests.h		benchmark_shared_tests.h
benchmark_stdint.hpp		benchmark_stdint.hpp
benchmark_timer.h		benchmark_timer.h
benchmark_typenames.h		benchmark_typenames.h
binary_search.cpp		binary_search.cpp
bitarrays.cpp		bitarrays.cpp
byte_order.cpp		byte_order.cpp
clock_time.cpp		clock_time.cpp
complex_type.cpp		complex_type.cpp
container_doublelinklist.h		container_doublelinklist.h
container_hashmap.h		container_hashmap.h
container_singlelinklist.h		container_singlelinklist.h
containers.cpp		containers.cpp
convolution.cpp		convolution.cpp
convolution_box.cpp		convolution_box.cpp
count_sequence.cpp		count_sequence.cpp
ctype.cpp		ctype.cpp
custom_types.h		custom_types.h
custom_types_loop_invariant.cpp		custom_types_loop_invariant.cpp
deinterleave.cpp		deinterleave.cpp
divide.cpp		divide.cpp
exceptions.c		exceptions.c
functionobjects.cpp		functionobjects.cpp
histogram.cpp		histogram.cpp
inner_product.cpp		inner_product.cpp
interleave.cpp		interleave.cpp
iostreams.cpp		iostreams.cpp
locales.cpp		locales.cpp
logic_sequence.cpp		logic_sequence.cpp
lookup_table.cpp		lookup_table.cpp
loop_fusion.cpp		loop_fusion.cpp
loop_induction.cpp		loop_induction.cpp
loop_interchange.cpp		loop_interchange.cpp
loop_normalize.cpp		loop_normalize.cpp
loop_removal.cpp		loop_removal.cpp
loop_unroll.cpp		loop_unroll.cpp
loop_unswitching.cpp		loop_unswitching.cpp
machine.cpp		machine.cpp
machine.manifest		machine.manifest
makefile		makefile
makefile.nt		makefile.nt
mathlib.cpp		mathlib.cpp
matrix_flip.cpp		matrix_flip.cpp
matrix_multiply.cpp		matrix_multiply.cpp
matrix_vector_product.cpp		matrix_vector_product.cpp
memcmp.cpp		memcmp.cpp
memcpy.cpp		memcpy.cpp
memmove.cpp		memmove.cpp
memset.cpp		memset.cpp
minmax.cpp		minmax.cpp
minmax_sequence.cpp		minmax_sequence.cpp
pde_laplace_jacobi.cpp		pde_laplace_jacobi.cpp
pointer_loop_invariant.cpp		pointer_loop_invariant.cpp
product_sequence.cpp		product_sequence.cpp
random_numbers.cpp		random_numbers.cpp
reference_normalization.cpp		reference_normalization.cpp
reverse_sequence.cpp		reverse_sequence.cpp
rotate_bits.cpp		rotate_bits.cpp
rotate_sequence.cpp		rotate_sequence.cpp
rtti.cpp		rtti.cpp
scalar_replacement_array_reduction.cpp		scalar_replacement_array_reduction.cpp
scalar_replacement_arrays.cpp		scalar_replacement_arrays.cpp
scalar_replacement_structs.cpp		scalar_replacement_structs.cpp
shift.cpp		shift.cpp
simple_types_algebraic_simplification.cpp		simple_types_algebraic_simplification.cpp
simple_types_constant_folding.cpp		simple_types_constant_folding.cpp
simple_types_constant_propagation.cpp		simple_types_constant_propagation.cpp
simple_types_copy_propagation.cpp		simple_types_copy_propagation.cpp
simple_types_cse.cpp		simple_types_cse.cpp
simple_types_loop_invariant.cpp		simple_types_loop_invariant.cpp
simple_types_strength_reduction.cpp		simple_types_strength_reduction.cpp
simple_types_value_range.cpp		simple_types_value_range.cpp
smart_pointers.cpp		smart_pointers.cpp
stepanov_abstraction.cpp		stepanov_abstraction.cpp
stepanov_array.cpp		stepanov_array.cpp
stepanov_inherit.cpp		stepanov_inherit.cpp
stepanov_vector.cpp		stepanov_vector.cpp
sum_sequence.cpp		sum_sequence.cpp
template_unroll.cpp		template_unroll.cpp

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/*  Copyright 2007-2008 Adobe Systems Incorporated
    Copyright 2018-2022 Chris Cox
    Distributed under the MIT License (see accompanying file LICENSE_1_0_0.txt
    or a copy at http://stlab.adobe.com/licenses.html )
*/

/******************************************************************************/

Goals:

To help compiler vendors identify places where they may be able to improve
the performance of the code they generate, or the libraries they supply.

To help developers understand the performance impact of using different
data types, operations, and C++ language features with their
target compilers and OSes.

/******************************************************************************/

Secondary goals:

To take performance problems found in real world code and turn them
into benchmarks for compiler vendors and other developers to learn from.

Keep the benchmark portable to as many compilers and OSes as possible.
This means keeping things simple and external dependencies minimal.

Not to use specialized optimization flags per test.
    No pragmas or other compiler directives are allowed in the source.
    All source files should use the same compilation flags.
    Use the common optimization flags (-O, -O1, -O2, -O3, or -Os).
    If another option improves optimization, then why isn't it on for -O3?
    If an optimization flag doesn't always improve performance, that is
        most likely a bug in the optimization code that needs to be fixed.
    In the real world, developers can't test all permutations of all
        optimization flags.  They expect the standard flags to work.

/******************************************************************************/

**** A note to compiler vendors:
     Please match the idioms, not the instances.
     The benchmark code will be changing over time.
     And we do read your assembly output.

/******************************************************************************/

Building:

Unix users should be able to use "make all" to build and "make report"
to generate the report. If you wish to use a different compiler, you can
set that from the make command line, or edit the makefile.

Solaris users will need to use "gmake all" to build and "gmake report"
to generate the report.

Windows users will need to make sure that the VC environment variables
are set for their shell (command prompt), then use "nmake -f makefile.nt all"
and "nmake -f makefile.nt report" from within that shell.

A CMakeLists.txt file is provided for convenience, but not tested as thoroughly
as the makefiles. (thanks to Denis Glazachev)