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8026054: New type profiling points: type of return values at calls

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X86 interpreter and c1 type profiling for return values at calls

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2013-10-12 12:12:59 +02:00
parent 0fa4a576fd
commit c8bfc7e7d7
24 changed files with 814 additions and 216 deletions
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19
hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
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@ -3089,7 +3089,7 @@ void LIRGenerator::profile_arguments(ProfileCall* x) {
Bytecodes::Code bc = x->method()->java_code_at_bci(bci);
int start = 0;
int stop = args->number_of_arguments();
int stop = data->is_CallTypeData() ? ((ciCallTypeData*)data)->number_of_arguments() : ((ciVirtualCallTypeData*)data)->number_of_arguments();
if (x->nb_profiled_args() < stop) {
// if called through method handle invoke, some arguments may have been popped
stop = x->nb_profiled_args();
@ -3099,7 +3099,7 @@ void LIRGenerator::profile_arguments(ProfileCall* x) {
bool has_receiver = x->inlined() && !x->callee()->is_static() && !Bytecodes::has_receiver(bc);
ciSignatureStream sig_stream(sig, has_receiver ? x->callee()->holder() : NULL);
for (int i = 0; i < stop; i++) {
int off = in_bytes(TypeStackSlotEntries::type_offset(i)) - in_bytes(TypeStackSlotEntries::args_data_offset());
int off = in_bytes(TypeEntriesAtCall::argument_type_offset(i)) - in_bytes(TypeEntriesAtCall::args_data_offset());
ciKlass* exact = profile_arg_type(md, base_offset, off,
args->type(i), x->profiled_arg_at(i+start), mdp,
!x->arg_needs_null_check(i+start), sig_stream.next_klass());
@ -3131,6 +3131,21 @@ void LIRGenerator::do_ProfileCall(ProfileCall* x) {
__ profile_call(x->method(), x->bci_of_invoke(), x->callee(), mdo, recv, tmp, x->known_holder());
}
void LIRGenerator::do_ProfileReturnType(ProfileReturnType* x) {
int bci = x->bci_of_invoke();
ciMethodData* md = x->method()->method_data_or_null();
ciProfileData* data = md->bci_to_data(bci);
assert(data->is_CallTypeData() || data->is_VirtualCallTypeData(), "wrong profile data type");
ciReturnTypeEntry* ret = data->is_CallTypeData() ? ((ciCallTypeData*)data)->ret() : ((ciVirtualCallTypeData*)data)->ret();
LIR_Opr mdp = LIR_OprFact::illegalOpr;
ciKlass* exact = profile_arg_type(md, 0, md->byte_offset_of_slot(data, ret->type_offset()),
ret->type(), x->ret(), mdp,
!x->needs_null_check(), x->callee()->signature()->return_type()->as_klass());
if (exact != NULL) {
md->set_return_type(bci, exact);
}
}
void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) {
// We can safely ignore accessors here, since c2 will inline them anyway,
// accessors are also always mature.