[#RVM-339] Image bloat (code +25% & data +5%)

RVM

Image bloat (code +25% & data +5%)

Created: 03/Nov/07 10:37 PM Updated: 13/Apr/08 12:47 AM

Component/s:

Infrastructure: Build

Affects Version/s:

None

Fix Version/s:

2.9.3

Time Tracking:

Not Specified

Environment:

x86 lnx

Issue Links:

Related

This issue relates to:

~~RVM-394~~ Tune inlining of arraycopy

RVM-222 Reduce bootimage bloat

Description

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Unfortunately while rvmx86lnx32b was off the air, we blew out the code image size by 25%, the data image by 5% and the gross by 10% [1].

The revision window is r13822-13836. It looks like the only changes to the trunk in this window were a number of compiler changes, so presumably that's where the problem is (Dave & Daniel's changes were just to branches).

Ian, can you please take a look?

Thanks,

--Steve

[1] http://jikesrvm.anu.edu.au/cattrack/results/rvmx86lnx32b.anu.edu.au/sanity/1672/statistics_report

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Ian Rogers added a comment - 04/Nov/07 07:31 AM

Yep, unfortunately the typing and register improvements introduced an enum associated overhead that I did a fix of by forcing inlining all over the assembler. I'm working on a few things that should improve this situation. In the mean-time the assembler improvements are hopefully helping work on improved register allocators. Hopefully also the vectorization work when the relevant people get time.

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Ian Rogers added a comment - 11/Mar/08 05:40 AM

Patch committed in r14020.

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Ian Rogers added a comment - 11/Mar/08 06:04 AM

Space is down about 28% for code and about 6% for data.