llvm-test-suite

ref. 
https://llvm.org/docs/TestSuiteGuide.html
https://github.com/mollybuild/RISCV-Measurement/blob/master/Build-RISCV-LLVM-and-run-testsuite.md

Prerequisites:
sudo apt-get install tcl tk tcl-dev tk-dev
install llvm with compiler-rt

jonathanchen@hz-compiler1:~/llvm/llvm-project/test-suite$ git branch
* 12.x
  main

run bash script:
https://github.com/Jonathan2251/lbd/blob/master/lbdex/build-llvm-test-suite.sh

// The following pass build
jonathanchen@hz-compiler1:~/llvm/llvm-project/test-suite-build$ cmake -DCMAKE_C_COMPILER=/home/jonathanchen/llvm/release/build/bin/clang  -C../test-suite/cmake/caches/O3.cmake ../test-suite
make

jonathanchen@hz-compiler1:~/llvm/llvm-project/test-suite-build$ ../test-suite/utils/compare.py results.json
Tests: 2883
Metric: exec_time

Program                                         results 
 LCALS/Subs...test:BM_MAT_X_MAT_LAMBDA/44217   243962.70
 LCALS/Subs...aw.test:BM_MAT_X_MAT_RAW/44217   239099.82
 ImageProce...t:BENCHMARK_GAUSSIAN_BLUR/1024   91095.66 
 ImageProce...HMARK_ANISTROPIC_DIFFUSION/256   48247.41 
 harris/har...est:BENCHMARK_HARRIS/2048/2048   42711.39 
 ImageProce...MARK_BICUBIC_INTERPOLATION/256   25228.46 
 ImageProce...st:BENCHMARK_GAUSSIAN_BLUR/512   21491.95 
 LCALS/Subs...Raw.test:BM_MAT_X_MAT_RAW/5001   12298.11 
 harris/har...est:BENCHMARK_HARRIS/1024/1024   12258.56 
 LCALS/Subs....test:BM_MAT_X_MAT_LAMBDA/5001   12026.61 
 ImageProce...HMARK_ANISTROPIC_DIFFUSION/128   11664.37 
 ImageProce...MARK_BICUBIC_INTERPOLATION/128   6158.37  
 ImageProce...st:BENCHMARK_GAUSSIAN_BLUR/256   5207.85  
 ImageProce...ARK_BILINEAR_INTERPOLATION/256   4726.38  
 ImageProce...ate.test:BENCHMARK_DILATE/1024   4536.68  
             results
count  2867.000000  
mean   359.924761   
std    6760.605803  
min    0.000000     
25%    0.000400     
50%    0.000400     
75%    0.005000     
max    243962.699333