[llvm-commits] [PATCH] [test-suite] smallpt single source benchmark

[Redmond, Paul]

Hi,

Attached is a patch that adds the smallpt benchmark (http://www.kevinbeason.com/smallpt/) to the test-suite. There's lots of room for improvement given these numbers:

$ g++ -o smallpt-gcc smallpt.cpp -O3
$ ./smallpt-gcc
Rendering (4 spp)

real 0m5.658s
user 0m5.632s
sys 0m0.008s

$ icc -o smallpt-icc smallpt.cpp -O3
$ time ./smallpt-icc
Rendering (4 spp)

real 0m4.570s
user 0m4.544s
sys 0m0.012s

$ clang++ -o smallpt-clang smallpt.cpp -O3
$ time ./smallpt-clang
Rendering (4 spp)

real 0m6.513s
user 0m6.488s
sys 0m0.004s

An obvious improvement is that both ICC and GCC transforms sin and cos into sincos while LLVM does not.

Should I add this benchmark to the test-suite?

paul

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