SPECjvm2008 benchmark numbers for AArch64

[stewartd.qdt]

I had mentioned to Andrew Haley I had been doing some benchmark tests of SPECjvm2008 under an AArch64 system. He indicated that sharing these results may be beneficial to the larger community. So below please find a table of ratios of SPECjvm2008 sub-benchmarks scores run under Graal to the same sub-benchmark scores run under Hotspot. For the numbers below I used the Graal from Github, with the tip commit id of 666d33ad82cdbf26bd30f99ea09b058177d56c4d. I also have run the numbers using the Graal that comes with OpenJDK (as of commit id 48816:120d6893f32f). There are not many differences between these two versions and there were not any substantial changes between the two sets of numbers.

For the table below, numbers greater than 1 indicate the benchmark performed better using Graal, and numbers below 1 indicate that Hotspot performed better.
I have not done the same tests under an x86 system.

| Benchmark            | Graal/Hotspot |
|----------------------|---------------|
| compress             | 1.0330840508  |
| crypto.aes           | 1.3930506076  |
| crypto.rsa           | 0.9685673726  |
| crypto.signverify    | 1.0279897496  |
| derby                | 0.8528705952  |
| mpegaudio            | 0.8677143536  |
| scimark.fft.large    | 0.9931398804  |
| scimark.lu.large     | 0.9947762493  |
| scimark.sor.large    | 0.7137096774  |
| scimark.sparse.large | 1.0176137761  |
| scimark.fft.small    | 0.9699580705  |
| scimark.lu.small     | 0.7400088047  |
| scimark.sor.small    | 0.6226693059  |
| scimark.sparse.small | 0.7469722941  |
| scimark.monte_carlo  | 0.1778036443  |
| serial               | 0.8416132562  |
| sunflow              | 1.0235484652  |
| xml.transform        | 0.7971206314  |
| xml.validation       | 0.9315428534  |


Regards,
Daniel Stewart