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

[Redmond, Paul]

Any interest in adding this benchmark to the test-suite?

paul

On 2012-12-20 11:01 AM, "Redmond, Paul" <paul.redmond at intel.com> wrote:

>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
>