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From Egor Pasko <egor.pa...@gmail.com>
Subject Re: Huge performance regression commit: svn commit: r602061
Date Sat, 08 Dec 2007 16:10:30 GMT
On the 0x3A6 day of Apache Harmony Sergey Kuksenko wrote:
> Hi All,
> 
> I have to notify you that this commit causes -10% performance regression on
> some benchmarks.
> From my point of view it is not accectable.

Sergey, is that because the patch disables OSR or due to inliner
changes? or maybe safepoint changes?

Mikhail, this is at least three fixes in one commit:) I understand
that it was easier for you to commit all three in one row (run tests
once), but it makes no simple guess what parts cause performance
degradation....

I hope I am being not very .. ehm .. critical :)

> 
> On 12/7/07, mfursov@apache.org <mfursov@apache.org> wrote:
> >
> > Author: mfursov
> > Date: Fri Dec  7 02:32:39 2007
> > New Revision: 602061
> >
> > URL: http://svn.apache.org/viewvc?rev=602061&view=rev
> > Log:
> > Fix for HARMONY-4785 [drlvm][jit][opt] EHWA asserts in server_static mode
> > +Regression tests
> > +OSR optimization was disabled in all modes. It will be reenabled after M4
> > release.
> >
> >
> > Added:
> >    harmony/enhanced/drlvm/trunk/src/test/regression/H4785/
> >    harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java
> > (with props)
> >    harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml
> > (with props)
> > Modified:
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/opt.emconf
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server.emconf
> >
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server_static.emconf
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/opt.emconf
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server.emconf
> >
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server_static.emconf
> >
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/codegenerator/ia32/Ia32GCSafePoints.cpp
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/FlowGraph.cpp
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/inliner.cpp
> >    harmony/enhanced/drlvm/trunk/vm/jitrino/src/shared/BitSet.cpp
> >
> > Added: harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java?rev=602061&view=auto
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java
> > (added)
> > +++ harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java Fri
> > Dec  7 02:32:39 2007
> > @@ -0,0 +1,46 @@
> > +/*
> > + *  Licensed to the Apache Software Foundation (ASF) under one or more
> > + *  contributor license agreements.  See the NOTICE file distributed with
> > + *  this work for additional information regarding copyright ownership.
> > + *  The ASF licenses this file to You under the Apache License, Version
> > 2.0
> > + *  (the "License"); you may not use this file except in compliance with
> > + *  the License.  You may obtain a copy of the License at
> > + *
> > + *     http://www.apache.org/licenses/LICENSE-2.0
> > + *
> > + *  Unless required by applicable law or agreed to in writing, software
> > + *  distributed under the License is distributed on an "AS IS" BASIS,
> > + *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
> > implied.
> > + *  See the License for the specific language governing permissions and
> > + *  limitations under the License.
> > + */
> > +package org.apache.harmony.drlvm.tests.regression.h4785;
> > +
> > +import junit.framework.TestCase;
> > +
> > +public class Test extends TestCase {
> > +
> > +
> > +
> > +    public void test() {
> > +        blit(1, null);
> > +    }
> > +
> > +    static boolean f = true;
> > +    static void blit(int destX, byte[] destData) {
> > +        if (f) return;
> > +        int dx = destX;
> > +        int indexq = 0;
> > +        int dtype=1;
> > +        for(; dx > 0; ) {
> > +            switch(dtype) {
> > +                default:
> > +                    break;
> > +                case 10: // '\n'
> > +                        indexq = destData[0];
> > +                break;
> > +            }
> > +        }
> > +    }
> > +
> > +}
> >
> > Propchange:
> > harmony/enhanced/drlvm/trunk/src/test/regression/H4785/Test.java
> >
> > ------------------------------------------------------------------------------
> >    svn:eol-style = native
> >
> > Added: harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml?rev=602061&view=auto
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml
> > (added)
> > +++ harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml
> > Fri Dec  7 02:32:39 2007
> > @@ -0,0 +1,31 @@
> > +<!--
> > +    Licensed to the Apache Software Foundation (ASF) under one or more
> > +    contributor license agreements.  See the NOTICE file distributed with
> > +    this work for additional information regarding copyright ownership.
> > +    The ASF licenses this file to You under the Apache License, Version
> > 2.0
> > +    (the "License"); you may not use this file except in compliance with
> > +    the License.  You may obtain a copy of the License at
> > +
> > +         http://www.apache.org/licenses/LICENSE-2.0
> > +
> > +     Unless required by applicable law or agreed to in writing, software
> > +     distributed under the License is distributed on an "AS IS" BASIS,
> > +     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
> > implied.
> > +     See the License for the specific language governing permissions and
> > +     limitations under the License. -->
> > +
> > +<project name="RUN HARMONY-4785 Regression Test">
> > +    <target name="run-test">
> > +        <run-junit-test
> > +             test="org.apache.harmony.drlvm.tests.regression.h4785.Test"
> > +             vmarg="-Xem:opt">
> > +        </run-junit-test>
> > +
> > +        <run-junit-test
> > +             test="org.apache.harmony.drlvm.tests.regression.h4785.Test"
> > +             vmarg="-Xem:server_static">
> > +        </run-junit-test>
> > +
> > +    </target>
> > +</project>
> > +
> >
> > Propchange:
> > harmony/enhanced/drlvm/trunk/src/test/regression/H4785/run.test.xml
> >
> > ------------------------------------------------------------------------------
> >    svn:eol-style = native
> >
> > Modified: harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/opt.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/opt.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/opt.emconf
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/opt.emconf Fri
> > Dec  7 02:32:39 2007
> > @@ -24,7 +24,7 @@
> >
> > -XX:jit.CS_OPT.path=opt_init,translator,optimizer,hir2lir,codegen
> >
> > --XX:jit.CS_OPT.path.optimizer=ssa
> > ,devirt,hlo_api_magic,inline,purge,osr_path,escape_path,dce,uce,memopt,simplify,dce,uce,lower,dessa,statprof
> > +-XX:jit.CS_OPT.path.optimizer=ssa
> > ,devirt,hlo_api_magic,inline,purge,osr_path-,escape_path,dce,uce,memopt,simplify,dce,uce,lower,dessa,statprof
> > -XX:jit.CS_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.CS_OPT.path.escape_path=hvn,simplify,dce,uce,escape
> > -XX:jit.CS_OPT.path.codegen=lock_method
> > ,bbp,gcpoints,cafl,dce1,i8l-,api_magic,early_prop-,itrace-,native,constraints,dce2,regalloc,spillgen,layout,copy,rce-,stack,break-,iprof-,emitter!,si_insts,gcmap,info,unlock_method
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server.emconf
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server.emconf Fri
> > Dec  7 02:32:39 2007
> > @@ -69,7 +69,7 @@
> > -XX:jit.SD1_OPT.arg.optimizer.vp_instrument.profile_abstract=true
> >
> >
> > --XX:jit.SD2_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,devirt_virtual,edge_annotate,unguard,devirt_intf,hlo_api_magic,inline,purge,osr_path,escape_path,dce,uce,hvn,dce,uce,inline_helpers,purge,simplify,uce,dce,uce,abce,lower,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,gcm,dessa,statprof
> > +-XX:jit.SD2_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,devirt_virtual,edge_annotate,unguard,devirt_intf,hlo_api_magic,inline,purge,osr_path-,escape_path,dce,uce,hvn,dce,uce,inline_helpers,purge,simplify,uce,dce,uce,abce,lower,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,gcm,dessa,statprof
> > -XX:jit.SD2_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.SD2_OPT.path.escape_path=hvn,simplify,dce,uce,escape
> > -XX:jit.SD2_OPT.path.abce=classic_abcd
> > ,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,memopt,dce,uce,dessa,fastArrayFill,ssa,statprof,dabce,dce,uce
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server_static.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server_static.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > ---
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server_static.emconf
> > (original)
> > +++
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/em64t/server_static.emconf
> > Fri Dec  7 02:32:39 2007
> > @@ -24,7 +24,7 @@
> >
> > -XX:jit.SS_OPT.path=opt_init,translator,optimizer,hir2lir,codegen
> >
> > --XX:jit.SS_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,statprof,devirt,hlo_api_magic,inline,purge,osr_path,simplify,dce,uce,hvn,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,lower,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,classic_abcd,dce,uce,gcm,dessa,statprof
> > +-XX:jit.SS_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,statprof,devirt,hlo_api_magic,inline,purge,osr_path-,simplify,dce,uce,hvn,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,lower,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,classic_abcd,dce,uce,gcm,dessa,statprof
> > -XX:jit.SS_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.SS_OPT.path.codegen=lock_method
> > ,bbp,gcpoints,cafl,dce1,i8l-,api_magic,early_prop-,itrace-,native,constraints,dce2,regalloc,spillgen,layout,copy,rce-,stack,break-,iprof-,emitter!,si_insts,gcmap,info,unlock_method
> > -XX:jit.SS_OPT.path.dce1=cg_dce
> >
> > Modified: harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/opt.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/opt.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/opt.emconf
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/opt.emconf Fri
> > Dec  7 02:32:39 2007
> > @@ -24,7 +24,7 @@
> >
> > -XX:jit.CS_OPT.path=opt_init
> > ,lock_method,translator,optimizer,hir2lir,codegen,unlock_method
> >
> > --XX:jit.CS_OPT.path.optimizer=ssa
> > ,devirt,hlo_api_magic,inline,purge,osr_path,simplify,dce,uce,lazyexc,throwopt,escape_path,dce,uce,memopt,simplify,dce,uce,lower,statprof,unroll,ssa,simplify,dce,uce,dessa,statprof
> > +-XX:jit.CS_OPT.path.optimizer=ssa
> > ,devirt,hlo_api_magic,inline,purge,osr_path-,simplify,dce,uce,lazyexc,throwopt,escape_path,dce,uce,memopt,simplify,dce,uce,lower,statprof,unroll,ssa,simplify,dce,uce,dessa,statprof
> > -XX:jit.CS_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.CS_OPT.path.escape_path=hvn,simplify,dce,uce,escape
> > -XX:jit.CS_OPT.path.codegen=bbp
> > ,btr,gcpoints,cafl,dce1,i8l,api_magic,early_prop,peephole,itrace-,native,constraints,dce2,regalloc,spillgen,copy,i586,layout,rce+,stack,break-,iprof-,peephole,emitter!,si_insts,gcmap,info
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server.emconf
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server.emconf Fri
> > Dec  7 02:32:39 2007
> > @@ -71,7 +71,7 @@
> >
> > -XX:jit.SD2_OPT.path=opt_init,translator,optimizer,hir2lir,codegen
> >
> > --XX:jit.SD2_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,devirt_virtual,edge_annotate,unguard,devirt_intf,hlo_api_magic,inline,purge,osr_path,simplify,dce,uce,lazyexc,throwopt,escape_path,inline_helpers,purge,simplify,uce,dce,uce,abce,lower,dce,uce,statprof,unroll,ssa,simplify,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,gcm,dessa,statprof
> > +-XX:jit.SD2_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,devirt_virtual,edge_annotate,unguard,devirt_intf,hlo_api_magic,inline,purge,osr_path-,simplify,dce,uce,lazyexc,throwopt,escape_path,inline_helpers,purge,simplify,uce,dce,uce,abce,lower,dce,uce,statprof,unroll,ssa,simplify,dce,uce,memopt,reassoc,dce,uce,hvn,dce,uce,gcm,dessa,statprof
> > -XX:jit.SD2_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.SD2_OPT.path.escape_path=hvn,simplify,dce,uce,escape
> > -XX:jit.SD2_OPT.path.abce=classic_abcd
> > ,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,memopt,dce,uce,dessa,fastArrayFill,ssa,statprof,dabce,dce,uce
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server_static.emconf
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server_static.emconf?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > ---
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server_static.emconf
> > (original)
> > +++
> > harmony/enhanced/drlvm/trunk/vm/jitrino/config/ia32/server_static.emconf Fri
> > Dec  7 02:32:39 2007
> > @@ -24,7 +24,7 @@
> >
> > -XX:jit.SS_OPT.path=opt_init
> > ,lock_method,translator,optimizer,hir2lir,codegen,unlock_method
> >
> > --XX:jit.SS_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,statprof,devirt,hlo_api_magic,inline,purge,osr_path,simplify,dce,uce,lazyexc,throwopt,statprof,hvn,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,lower,dce,uce,unroll,ssa,simplify,dce,uce,memopt,reassoc,dce,uce,hvn,simplify,dce,uce,classic_abcd,dce,uce,gcm,dessa,statprof
> > +-XX:jit.SS_OPT.path.optimizer=ssa
> > ,simplify,dce,uce,statprof,devirt,hlo_api_magic,inline,purge,osr_path-,simplify,dce,uce,lazyexc,throwopt,statprof,hvn,dce,uce,dessa,statprof,peel,ssa,hvn,simplify,dce,uce,lower,dce,uce,unroll,ssa,simplify,dce,uce,memopt,reassoc,dce,uce,hvn,simplify,dce,uce,classic_abcd,dce,uce,gcm,dessa,statprof
> > -XX:jit.SS_OPT.path.osr_path=simplify,dce,uce,gcm,osr
> > -XX:jit.SS_OPT.path.codegen=bbp
> > ,btr,gcpoints,cafl,dce1,i8l,api_magic,early_prop,peephole,itrace-,native,constraints,dce2,regalloc,spillgen,copy,i586,layout,rce+,stack,break-,iprof-,peephole,emitter!,si_insts,gcmap,info
> > -XX:jit.SS_OPT.path.dce1=cg_dce
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/codegenerator/ia32/Ia32GCSafePoints.cpp
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/src/codegenerator/ia32/Ia32GCSafePoints.cpp?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > ---
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/codegenerator/ia32/Ia32GCSafePoints.cpp
> > (original)
> > +++
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/codegenerator/ia32/Ia32GCSafePoints.cpp
> > Fri Dec  7 02:32:39 2007
> > @@ -181,7 +181,9 @@
> >             for (Inst* inst = (Inst*)node->getLastInst(); inst!=NULL; inst
> > = inst->getPrevInst()) {
> >                 if (inst->getOpndCount() == 0 && ((inst->getKind()
==
> > Inst::Kind_MethodEndPseudoInst)
> >                         || (inst->getKind() ==
> > Inst::Kind_MethodEntryPseudoInst))
> > -                        || (inst->getMnemonic() == Mnemonic_NOP) ) {
> > +                        || (inst->getMnemonic() == Mnemonic_NOP
> > +                        || inst->getKind() == Inst::Kind_EmptyPseudoInst)
> > )
> > +                {
> >                     continue;
> >                 }
> >                 Opnd* opnd = inst->getOpnd(0); // VSH: 0 - ????
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/FlowGraph.cpp
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/FlowGraph.cpp?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/FlowGraph.cpp
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/FlowGraph.cpp
> > Fri Dec  7 02:32:39 2007
> > @@ -891,6 +891,82 @@
> > #endif
> > }
> >
> > +static void normalizePseudoThrow(IRManager& irm) {
> > +//the main idea of the method:
> > +//1. normalize loops -> make sure there is only one backedge
> > +//2. move pseudothrows to the source node of backedge
> > +
> > +    OptPass::computeLoops(irm, true);
> > +    LoopTree* lt = irm.getLoopTree();
> > +    if (!lt->hasLoops()) {
> > +        return;
> > +    }
> > +    ControlFlowGraph& cfg = irm.getFlowGraph();
> > +    const Nodes& nodes = cfg.getNodes();
> > +    MemoryManager tmpMM("normalizePseudoThrow");
> > +    StlMap<Node*, Node*> loopHeadToDispatchMap(tmpMM);
> > +    Edges backedges(tmpMM);
> > +    Edges edgesToRemove(tmpMM);
> > +    for (Nodes::const_iterator it = nodes.begin(), end = nodes.end();
> > it!=end; ++it) {
> > +       Node* node = *it;
> > +        Node* head = lt->getLoopHeader(node, false);
> > +        if (head == NULL) {
> > +            continue;
> > +        }
> > +        const Edges& edges = node->getOutEdges();
> > +        bool isBackedgeSrc = false;
> > +        for (Edges::const_iterator ite = edges.begin(), ende = edges.end();
> > ite!=ende; ++ite) {
> > +            Edge* e = *ite;
> > +            if (lt->isBackEdge(e)) {
> > +                backedges.push_back(e);
> > +                isBackedgeSrc = true;
> > +                break;
> > +            }
> > +        }
> > +        Inst* i = (Inst*)node->getLastInst();
> > +        bool isPseudoThrow = i->getOpcode() == Op_PseudoThrow;
> > +        if (!isBackedgeSrc && isPseudoThrow) {
> > +            i->unlink();
> > +            Edge* exceptionEdge = node->getExceptionEdge();
> > +            Node* dispatch = exceptionEdge->getTargetNode();
> > +            while (lt->getLoopHeader(dispatch, false) == head) { //select
> > dispatch that is out of the loop. Otherwise loop structure will be invalid
> > +                dispatch = dispatch->getExceptionEdgeTarget();
> > +                assert(dispatch);
> > +            }
> > +            loopHeadToDispatchMap[head] = dispatch;
> > +            edgesToRemove.push_back(exceptionEdge);
> > +        }
> > +    }
> > +
> > +    for (Edges::const_iterator it = edgesToRemove.begin(), end =
> > edgesToRemove.end(); it!=end; ++it) {
> > +        Edge* e = *it;
> > +        cfg.removeEdge(e);
> > +    }
> > +
> > +    for (Edges::const_iterator it = backedges.begin(), end =
> > backedges.end(); it!=end; ++it) {
> > +        Edge* backedge = *it;
> > +        Node* node = backedge->getSourceNode();
> > +        Node* head = backedge->getTargetNode();
> > +        Inst* i = (Inst*)node->getLastInst();
> > +        bool isPseudoThrow = i->getOpcode() == Op_PseudoThrow;
> > +        if (isPseudoThrow || node->isCatchBlock()) {
> > +            continue;
> > +        }
> > +        Node* dispatch = node->getExceptionEdgeTarget();
> > +        if (!dispatch) {
> > +            StlMap<Node*, Node*>::const_iterator it2 =
> > loopHeadToDispatchMap.find(head);
> > +            assert(it2!=loopHeadToDispatchMap.end());
> > +            dispatch = it2->second;
> > +        } else {
> > +            node = cfg.spliceBlockOnEdge(backedge, irm.getInstFactory
> > ().makeLabel());
> > +        }
> > +        Inst* pi = irm.getInstFactory().makePseudoThrow();
> > +        pi->setBCOffset(head->getLabelInst()->getBCOffset());
> > +        node->appendInst(pi);
> > +        cfg.addEdge(node, dispatch);
> > +    }
> > +}
> > +
> > void FlowGraph::doTranslatorCleanupPhase(IRManager& irm) {
> >     uint32 id = irm.getCompilationContext()->getCurrentSessionNum();
> >     const char* stage = "trans_cleanup";
> > @@ -1073,15 +1149,16 @@
> >         }
> >     }
> >     // Remove extra PseudoThrow insts
> > -    DeadCodeEliminator dce(irm);
> > -    dce.removeExtraPseudoThrow();
> > +    normalizePseudoThrow(irm);
> > +//    DeadCodeEliminator dce(irm);
> > +//    dce.removeExtraPseudoThrow();
> >
> >     //
> >     // a quick cleanup of unreachable and empty basic blocks
> >     //
> >     fg.purgeUnreachableNodes();
> >     fg.purgeEmptyNodes(false);
> > -
> > +
> >     if (Log::isLogEnabled(LogStream::IRDUMP)) {
> >         LogStream& irdump = Log::log(LogStream::IRDUMP);
> >         Log::printStageEnd(irdump.out(), id, "TRANS", stage, stage);
> >
> > Modified:
> > harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/inliner.cpp
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/inliner.cpp?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/inliner.cpp
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/src/optimizer/inliner.cpp Fri
> > Dec  7 02:32:39 2007
> > @@ -1181,9 +1181,9 @@
> >     dce.eliminateUnreachableCode();
> >     assert(_toplevelIRM.getInSsa());
> >     OptPass::fixupSsa(_toplevelIRM);
> > -    if (isPseudoThrowInserted) {
> > +    /*if (isPseudoThrowInserted) {
> >         dce.removeExtraPseudoThrow();
> > -    }
> > +    }*/
> > }
> >
> > void Inliner::compileAndConnectRegion(InlineNode* inlineNode,
> > CompilationContext& inlineCC) {
> >
> > Modified: harmony/enhanced/drlvm/trunk/vm/jitrino/src/shared/BitSet.cpp
> > URL:
> > http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/jitrino/src/shared/BitSet.cpp?rev=602061&r1=602060&r2=602061&view=diff
> >
> > ==============================================================================
> > --- harmony/enhanced/drlvm/trunk/vm/jitrino/src/shared/BitSet.cpp
> > (original)
> > +++ harmony/enhanced/drlvm/trunk/vm/jitrino/src/shared/BitSet.cpp Fri
> > Dec  7 02:32:39 2007
> > @@ -58,6 +58,7 @@
> > // Constructors
> > //
> >
> > +static uint32* stub=(uint32*)0xDEADBEEF;
> >
> > BitSet::BitSet(MemoryManager& memManager, uint32 size)
> > :words(0), setSize(0), wordsCapacity(0), mm(memManager)
> > @@ -66,6 +67,8 @@
> >     {
> >         alloc(size);
> >         clear();
> > +    } else {
> > +        words = stub;
> >     }
> > }
> >
> >
> >
> >
> 
> 
> -- 
> Best regards,
> ---
> Sergey Kuksenko.
> Intel Enterprise Solutions Software Division.

-- 
Egor Pasko


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