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Posted to commits@harmony.apache.org by "Mikhail Fursov (JIRA)" <ji...@apache.org> on 2006/12/04 13:59:22 UTC
[jira] Updated: (HARMONY-2396) [drlvm][jit] Jitrino fails to run
SpecJBB2005 in -Xem:opt mode
[ http://issues.apache.org/jira/browse/HARMONY-2396?page=all ]
Mikhail Fursov updated HARMONY-2396:
------------------------------------
Attachment: tauedge.diff
the fix.
> [drlvm][jit] Jitrino fails to run SpecJBB2005 in -Xem:opt mode
> --------------------------------------------------------------
>
> Key: HARMONY-2396
> URL: http://issues.apache.org/jira/browse/HARMONY-2396
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Mikhail Fursov
> Attachments: tauedge.diff
>
>
> SpecJBB2005 crashes in -Xem:opt mode.
> After analysis of IR I prepared this minimized testcase to reproduce the problem:
> public class Test {
> public static void main(String[] args) {
> foo3(new Test(), 10, new char[100]);
> }
>
> int position;
> static void foo3 (Test x, int i, char[] arr) {
> int j=x.position;
> if(j < i) {
> System.arraycopy(arr, j, arr, i, 10);
> }
> }
> }
> The problem is in memopt: it produces code with tau opnds mixed with numerics at in the same insts:
> The part of IR before memopt:
> I42:cgt:i4 t3, t9 -) t22:int32
> I43:and t18, t22 -) t23:int32
> The part of IR after memopt:
> I125:copy t55 -) t22:int32
> I43:and t18, t22 -) t23:int32
> Where t55 is
> I118:tauedge() -) t55:tau
> I propose replacing I125 copy inst with ldconst #1 for tauedge insts in HVN pass to solve the problem.
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