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From "Evgueni Brevnov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-5127) [drlvm][opt] Performance improvement for integer-to-float conversion
Date Thu, 15 Nov 2007 13:03:44 GMT
[drlvm][opt] Performance improvement for integer-to-float conversion

                 Key: HARMONY-5127
                 URL: https://issues.apache.org/jira/browse/HARMONY-5127
             Project: Harmony
          Issue Type: Improvement
          Components: DRLVM
         Environment: All
            Reporter: Evgueni Brevnov
            Priority: Minor

Currently jitrino OPT optimizes float-to-integer conversion by injecting (inlining) required
code into managed method. Unfortunatelly it lacks such optimization for opposite (integer-to-float)
conversion. Such optimization may have noticable effect on SciMark workload.

I also noticed that DRLVM helper VM_RT_F2I generates wrapper code (LIL stub) around C function
which implements float-to-integer conversion. It makes sense to get rid of such wrapper and
call C function directly. (or remove this helper at all and let jitrino implement it)


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