Guillermo Adrián Molina writes:
Hi list, I been playing around with exupery. And now I have a few questions:
- I cant get tinyBenchmarks working, neither in linux, nor in windows,
Downloaded all the staff from: http://wiki.squeak.org/squeak/Installing+Exupery
used: http://ftp.squeak.org/Exupery/vms/exupery-vm-0.11-linux.tz in linux and: http://ftp.squeak.org/Exupery/vms/exupery-vm-0.11-win32.zip in windows
with prebuild image: http://ftp.squeak.org/Exupery/images/exupery-0.10.tz
Examples run ok, but when I try to run tinyBenchmarks I get segmentation faults
Try using the 0.11 Exupery VM with Exupery 0.11. Exupery VMs must match the Exupery version. The interface between Exupery and the VM is still evolving.
- Tried tinyBenchmarks in VisualWorks (NonCommercial 7.4.1) in my
machine, I got: '652,229,299 bytecodes/sec; 89,016,165 sends/sec'
Does anyone know Why I get almost 90 million sends/sec? I think It's quite a big difference from previous versions of vw
- I saw that primitives for #at: and #at:put: are getting inlined, but I
think they are only implemented for Variable Objects (not for bytes nor Characters nor anything else) Is that true?
It's true. #at: and #at:put: are only implemented for variable objects. I should write primitives for other types. Good benchmarks that demonstrate the need for such primitives would be nice.
- In my experiments with exupery, I get an error if I inline too many
methods. I think I am getting out of machine registers, for example, when I try to compile Integer-#digitDiv:reg:. I get this error In the ColouringRegisterAllocator phase, but it is not a "You dont have more registers, dude" kind of error. Is the "no more registers" situation taken into consideration?
I'd guess that it was because a variable was live at an entry point. There's a stack tracing bug which I'm just fixing that could have caused that.
I use the liveness analyser in the register allocator to catch compiler bugs. It's much nicer to catch them there than with crashes.
- Is there a way to implement indirect jump tables in exupery?
It would be possible. I do use indirect jumps for returns to compiled methods. If you look at any method you should see at least one indirect jump in the return code. Just jump to a register.
Bryce