Modifying graph to include InvokeNode
ATKIN-GRANVILLE Chris
s1255753 at sms.ed.ac.uk
Tue Jul 16 06:19:48 PDT 2013
Is it not possible to somehow "get" that BCI? It doesn't seem like adding static method calls should be impossible when graph transformations are possible...
On 16 Jul 2013, at 14:14, Doug Simon <doug.simon at oracle.com>
wrote:
> This is almost certainly due to the fact that an invoke node must be associated with the BCI of a real invoke bytecode instruction. Otherwise, where would the interpreter resume if there is a deoptimization during the invocation?
>
> On Jul 16, 2013, at 2:22 PM, ATKIN-GRANVILLE Chris <s1255753 at sms.ed.ac.uk> wrote:
>
>> Hi there,
>>
>> I'm trying to modify the graph to include an invoke node to a static function after certain node types. I'm modifying the graph at a high level before LoweringPhase.class (not a requirement, can change if required). However, I'm running into issues with JVM fatal errors. The code I have at the moment looks like this:
>>
>> public class MyPhase extends Phase {
>> public void run(StructuredGraph graph) {
>> for (Node node: graph.getNode()) {
>>
>> if ( node instanceof RandomFixedNode) {
>> RandomFixedNode rfm = (RandomFixedNode) node;
>>
>> try {
>> ResolvedJavaMethod method = getMethod(…);
>> MethodCallTargetMode callTarget = graph.add(new MethodCallTargetNode(MethodCallTargetNode.InvokeKind.Static,
>> method, new ValueNode[] {}, new HotSpotResolvedPrimitiveType(Kind.Void)));
>>
>> InvokeNode invoke = graph.add(new InvokeNode(callTarget, FrameState.UNKNOWN_BCI));
>> invoke.setStateAfter(graph.add(new FrameState(FrameState.UNKNOWN_BCI)));
>> graph.addAfterFixed(rfm, invoke);
>>
>> } catch (Exception e) {
>> e.printStackTrace();
>> }
>> }
>>
>> }
>> }
>> }
>>
>> I'm pretty sure the problem is do with the BCIs and/or the FrameStates, but I don't know how to fix it. The error that I get is:
>>
>> Internal Error (/Volumes/Acme/Development/graal/src/share/vm/graal/graalCompilerToVM.cpp:44), pid=8466, tid=5379
>> assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethod::klass())) failed: sanity
>>
>> Does anyone have any ideas?
>>
>> Thanks, Chris
>>
>> --
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
>
>
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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