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8194739: Zero port of 8174962: Better interface invocations

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Reviewed-by: adinn, coleenp
This commit is contained in:
Andrew Haley 2018-01-22 15:19:02 +00:00
parent d017b5b2f5
commit 22c23d5081
2 changed files with 32 additions and 3 deletions
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29
src/hotspot/share/interpreter/bytecodeInterpreter.cpp
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@ -2535,13 +2535,35 @@ run:
// this could definitely be cleaned up QQQ
Method* callee;
Klass* iclass = cache->f1_as_klass();
// InstanceKlass* interface = (InstanceKlass*) iclass;
Method *interface_method = cache->f2_as_interface_method();
InstanceKlass* iclass = interface_method->method_holder();
// get receiver
int parms = cache->parameter_size();
oop rcvr = STACK_OBJECT(-parms);
CHECK_NULL(rcvr);
InstanceKlass* int2 = (InstanceKlass*) rcvr->klass();
// Receiver subtype check against resolved interface klass (REFC).
{
Klass* refc = cache->f1_as_klass();
itableOffsetEntry* scan;
for (scan = (itableOffsetEntry*) int2->start_of_itable();
scan->interface_klass() != NULL;
scan++) {
if (scan->interface_klass() == refc) {
break;
}
}
// Check that the entry is non-null. A null entry means
// that the receiver class doesn't implement the
// interface, and wasn't the same as when the caller was
// compiled.
if (scan->interface_klass() == NULL) {
VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), "", note_no_trap);
}
}
itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable();
int i;
for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) {
@ -2553,7 +2575,8 @@ run:
if (i == int2->itable_length()) {
VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), "", note_no_trap);
}
int mindex = cache->f2_as_index();
int mindex = interface_method->itable_index();
itableMethodEntry* im = ki->first_method_entry(rcvr->klass());
callee = im[mindex].method();
if (callee == NULL) {