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Pull google/benchmark library to the LLVM tree

Description

Pull google/benchmark library to the LLVM tree

This patch pulls google/benchmark v1.4.1 into the LLVM tree so that any
project could use it for benchmark generation. A dummy benchmark is
added to llvm/benchmarks/DummyYAML.cpp to validate the correctness of
the build process.

The current version does not utilize LLVM LNT and LLVM CMake
infrastructure, but that might be sufficient for most users. Two
introduced CMake variables:

  • LLVM_INCLUDE_BENCHMARKS (ON by default) generates benchmark targets
  • LLVM_BUILD_BENCHMARKS (OFF by default) adds generated benchmark targets to the list of default LLVM targets (i.e. if ON benchmarks will be built upon standard build invocation, e.g. ninja or make with no specific targets)

List of modifications:

  • BENCHMARK_ENABLE_TESTING is disabled
  • BENCHMARK_ENABLE_EXCEPTIONS is disabled
  • BENCHMARK_ENABLE_INSTALL is disabled
  • BENCHMARK_ENABLE_GTEST_TESTS is disabled
  • BENCHMARK_DOWNLOAD_DEPENDENCIES is disabled

Original discussion can be found here:
http://lists.llvm.org/pipermail/llvm-dev/2018-August/125023.html

Reviewed by: dberris, lebedev.ri

Subscribers: ilya-biryukov, ioeric, EricWF, lebedev.ri, srhines,
dschuff, mgorny, krytarowski, fedor.sergeev, mgrang, jfb, llvm-commits

Differential Revision: https://reviews.llvm.org/D50894

Details

Committed
omtcyfzAug 28 2018, 2:42 AM
Reviewer
dberris
Differential Revision
D50894: Pull google/benchmark library to the LLVM tree
Parents
rL340808: [NFC] A loop can never contain Ret instruction
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