--- a/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Mon Mar 08 04:46:30 2010 -0800
+++ b/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Tue Mar 09 20:16:19 2010 +0100
@@ -2284,7 +2284,7 @@
void LIRGenerator::invoke_load_arguments(Invoke* x, LIRItemList* args, const LIR_OprList* arg_list) {
- int i = x->has_receiver() ? 1 : 0;
+ int i = (x->has_receiver() || x->is_invokedynamic()) ? 1 : 0;
for (; i < args->length(); i++) {
LIRItem* param = args->at(i);
LIR_Opr loc = arg_list->at(i);
@@ -2322,6 +2322,10 @@
LIRItem* receiver = new LIRItem(x->receiver(), this);
argument_items->append(receiver);
}
+ if (x->is_invokedynamic()) {
+ // Insert a dummy for the synthetic MethodHandle argument.
+ argument_items->append(NULL);
+ }
int idx = x->has_receiver() ? 1 : 0;
for (int i = 0; i < x->number_of_arguments(); i++) {
LIRItem* param = new LIRItem(x->argument_at(i), this);
@@ -2371,6 +2375,10 @@
CodeEmitInfo* info = state_for(x, x->state());
+ // invokedynamics can deoptimize.
+ bool is_invokedynamic = x->code() == Bytecodes::_invokedynamic;
+ CodeEmitInfo* deopt_info = is_invokedynamic ? state_for(x, x->state_before()) : NULL;
+
invoke_load_arguments(x, args, arg_list);
if (x->has_receiver()) {
@@ -2407,6 +2415,47 @@
__ call_virtual(x->target(), receiver, result_register, vtable_offset, arg_list, info);
}
break;
+ case Bytecodes::_invokedynamic: {
+ ciBytecodeStream bcs(x->scope()->method());
+ bcs.force_bci(x->bci());
+ assert(bcs.cur_bc() == Bytecodes::_invokedynamic, "wrong stream");
+ ciCPCache* cpcache = bcs.get_cpcache();
+
+ // Get CallSite offset from constant pool cache pointer.
+ int index = bcs.get_method_index();
+ size_t call_site_offset = cpcache->get_f1_offset(index);
+
+ // If this invokedynamic call site hasn't been executed yet in
+ // the interpreter, the CallSite object in the constant pool
+ // cache is still null and we need to deoptimize.
+ if (cpcache->is_f1_null_at(index)) {
+ // Cannot re-use same xhandlers for multiple CodeEmitInfos, so
+ // clone all handlers. This is handled transparently in other
+ // places by the CodeEmitInfo cloning logic but is handled
+ // specially here because a stub isn't being used.
+ x->set_exception_handlers(new XHandlers(x->exception_handlers()));
+
+ DeoptimizeStub* deopt_stub = new DeoptimizeStub(deopt_info);
+ __ jump(deopt_stub);
+ }
+
+ // Use the receiver register for the synthetic MethodHandle
+ // argument.
+ receiver = LIR_Assembler::receiverOpr();
+ LIR_Opr tmp = new_register(objectType);
+
+ // Load CallSite object from constant pool cache.
+ __ oop2reg(cpcache->constant_encoding(), tmp);
+ __ load(new LIR_Address(tmp, call_site_offset, T_OBJECT), tmp);
+
+ // Load target MethodHandle from CallSite object.
+ __ load(new LIR_Address(tmp, java_dyn_CallSite::target_offset_in_bytes(), T_OBJECT), receiver);
+
+ __ call_dynamic(x->target(), receiver, result_register,
+ SharedRuntime::get_resolve_opt_virtual_call_stub(),
+ arg_list, info);
+ break;
+ }
default:
ShouldNotReachHere();
break;