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2009 Feb 04
0
[LLVMdev] -msse3 can degrade performance
...FFT Mflops: 516.05 (N=1024)
> SOR Mflops: 472.29 (100 x 100)
> MonteCarlo: Mflops: 167.25
> Sparse matmult Mflops: 633.20 (N=1000, nz=5000)
> LU Mflops: 907.20 (M=100, N=100)
>
> Note that llvm-gcc is achieving almost 280MFLOPS on MonteCarlo here,
> far
> higher than any competitors, and it is outperforming gcc overall.
Great! Do you see the same results with LTO? Inlining
Random_nextDouble from random.c to MonteCarlo.c should be a big win.
-Chris