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Posted to commits@harmony.apache.org by "Alexey Varlamov (JIRA)" <ji...@apache.org> on 2006/11/24 08:33:03 UTC
[jira] Closed: (HARMONY-2223) [drlvm][jit][performance]Inlined
int64 arithmetic routines - speedup of 64 arithmetics
[ http://issues.apache.org/jira/browse/HARMONY-2223?page=all ]
Alexey Varlamov closed HARMONY-2223.
------------------------------------
Applied final fix at r478788
> [drlvm][jit][performance]Inlined int64 arithmetic routines - speedup of 64 arithmetics
> --------------------------------------------------------------------------------------
>
> Key: HARMONY-2223
> URL: http://issues.apache.org/jira/browse/HARMONY-2223
> Project: Harmony
> Issue Type: Improvement
> Components: DRLVM
> Reporter: Alex Astapchuk
> Assigned To: Alexey Varlamov
> Attachments: encoder_assertion_on_intel64_fix.patch, encoder_assertion_on_intel64_fix.patch, jitrino_codegen.patch, jitrino_codegen.patch, jitrino_codegen.patch, test_longmuldiv_speed.class, test_longmuldiv_speed.java, vm_port_encoder.patch, vm_port_encoder.patch, vm_port_encoder.patch
>
>
> The attached 2 patches contain IA-32 codegenerator fixes that generate inlined long 64 bit arithmetics
> code instead of currently used internal or VM helper.
> One of the patches contains Encoder fixes and new instructions (so the whole VM must be rebuild), and the
> second one exploits them in Jitrino CG.
> The proposed code generates routines for 64bit multiplications, division and remainder.
> The attached test case shows nearly 20% speedup with the fix.
> I got from 2954ms to 2344ms on WinXP/Pentium4 on the provided test.
> YMMV: this is a microbenchmark, and results on real apps may vary depending on workload.
> Please, run the test as follows:
> ===== run_measure.sh =====
> #!/bin/bash
> NOINLINE_ARGS="-Djit.arg.inline_mul64=false -Djit.arg.inline_mul64_checks=false -Djit.arg.inline_div64=false -Djit.arg.inline_rem64=false"
> echo "*** No inlining"
> java ${NOINLINE_ARGS} test_longmuldiv_speed
> echo "*** With inlining"
> java test_longmuldiv_speed
> ==========================
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