[all-commits] [llvm/llvm-project] be895d: [pseudo] Add benchmarks for pseudoparser.

[Haojian Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: be895d5768d5e12581f158b9522b167c833796d8
      https://github.com/llvm/llvm-project/commit/be895d5768d5e12581f158b9522b167c833796d8
  Author: Haojian Wu <hokein.wu at gmail.com>
  Date:   2022-05-10 (Tue, 10 May 2022)

  Changed paths:
    M clang-tools-extra/pseudo/CMakeLists.txt
    A clang-tools-extra/pseudo/benchmarks/Benchmark.cpp
    A clang-tools-extra/pseudo/benchmarks/CMakeLists.txt

  Log Message:
  -----------
  [pseudo] Add benchmarks for pseudoparser.

Running on SemaDecl.cpp with the cxx.bnf grammar:

```
--------------------------------------------------------------
Benchmark                    Time             CPU   Iterations
--------------------------------------------------------------
runParseBNFGrammar      649389 ns       649365 ns         1013
runBuildLR            34591903 ns     34591380 ns           20
runPreprocessTokens   11418744 ns     11418703 ns           61 bytes_per_second=63.8971M/s
runGLRParse          282996863 ns    282988726 ns            2 bytes_per_second=2.57827M/s
runParseOverall      294969719 ns    294951870 ns            2 bytes_per_second=2.4737M/s
```

Differential Revision: https://reviews.llvm.org/D125226