Location* Location::create(STATE, CallFrame* call_frame,
bool include_variables)
{
if(NativeMethodFrame* nmf = call_frame->native_method_frame()) {
return create(state, nmf);
}
Location* loc = state->new_object_dirty<Location>(G(location));
loc->method_module(state, call_frame->module());
loc->receiver(state, call_frame->self());
loc->method(state, call_frame->compiled_code);
loc->ip(state, Fixnum::from(call_frame->ip()));
loc->flags(state, Fixnum::from(0));
if(call_frame->is_block_p(state)) {
loc->name(state, call_frame->top_scope(state)->method()->name());
loc->set_is_block(state);
} else {
loc->name(state, call_frame->name());
}
MachineCode* mcode = call_frame->compiled_code->machine_code();
if(mcode && mcode->jitted_p()) {
loc->set_is_jit(state);
}
if(include_variables) {
// Use promote_scope because it can figure out of the generated
// VariableScope should be isolated by default (true atm for JITd
// frames)
loc->variables(state, call_frame->promote_scope(state));
} else {
loc->variables(state, nil<VariableScope>());
}
loc->constant_scope(state, call_frame->constant_scope());
return loc;
}
CallFrame* LLVMState::find_candidate(STATE, CompiledCode* start, CallFrame* call_frame) {
if(!config_.jit_inline_generic) {
return call_frame;
}
int depth = config().jit_limit_search;
if(!start) {
throw CompileError("find_candidate: null start");
}
if(!call_frame) {
throw CompileError("find_candidate: null call frame");
}
// if(!start) {
// start = call_frame->compiled_code;
// call_frame = call_frame->previous;
// depth--;
// }
if(debug_search) {
std::cout << "> call_count: " << call_frame->compiled_code->machine_code()->call_count
<< " size: " << call_frame->compiled_code->machine_code()->total
<< " sends: " << call_frame->compiled_code->machine_code()->call_site_count()
<< std::endl;
call_frame->print_backtrace(state, 1);
}
if(start->machine_code()->total > (size_t)config_.jit_limit_inline_method) {
if(debug_search) {
std::cout << "JIT: STOP. reason: trigger method isn't small: "
<< start->machine_code()->total << " > "
<< config_.jit_limit_inline_method
<< std::endl;
}
return call_frame;
}
MachineCode* mcode = start->machine_code();
if(mcode->required_args != mcode->total_args) {
if(debug_search) {
std::cout << "JIT: STOP. reason: trigger method req_args != total_args" << std::endl;
}
return call_frame;
}
if(mcode->no_inline_p()) {
if(debug_search) {
std::cout << "JIT: STOP. reason: trigger method no_inline_p() = true" << std::endl;
}
return call_frame;
}
CallFrame* callee = call_frame;
call_frame = call_frame->previous;
if(!call_frame) return callee;
// Now start looking at callers.
while(depth-- > 0) {
CompiledCode* cur = call_frame->compiled_code;
if(!cur) {
if(debug_search) {
std::cout << "JIT: STOP. reason: synthetic CallFrame hit" << std::endl;
}
return callee;
}
MachineCode* mcode = cur->machine_code();
if(debug_search) {
std::cout << "> call_count: " << mcode->call_count
<< " size: " << mcode->total
<< " sends: " << mcode->call_site_count()
<< std::endl;
call_frame->print_backtrace(state, 1);
}
/*
if(call_frame->block_p()
|| mcode->required_args != mcode->total_args // has a splat
|| mcode->call_count < 200 // not called much
|| mcode->jitted() // already jitted
|| mcode->parent() // is a block
) return callee;
*/
if(mcode->required_args != mcode->total_args) {
if(debug_search) {
std::cout << "JIT: STOP. reason: req_args != total_args" << std::endl;
}
return callee;
}
if(mcode->call_count < config_.jit_threshold_inline) {
if(debug_search) {
std::cout << "JIT: STOP. reason: call_count too small: "
<< mcode->call_count << " < "
<< config_.jit_threshold_inline << std::endl;
}
return callee;
}
if(mcode->jitted_p()) {
if(debug_search) {
std::cout << "JIT: STOP. reason: already jitted" << std::endl;
}
return callee;
}
if(mcode->no_inline_p()) {
if(debug_search) {
std::cout << "JIT: STOP. reason: no_inline_p() = true" << std::endl;
}
return callee;
}
if(call_frame->jitted_p() || call_frame->inline_method_p()) {
return callee;
}
if(mcode->call_site_count() > eMaxInlineSendCount) {
if(debug_search) {
std::cout << "JIT: STOP. reason: high send count" << std::endl;
}
return call_frame;
}
// if(mcode->required_args != mcode->total_args // has a splat
// || mcode->call_count < 200 // not called much
// || mcode->jitted() // already jitted
// || !mcode->no_inline_p() // method marked as not inlineable
// ) return callee;
CallFrame* prev = call_frame->previous;
if(!prev) {
if(debug_search) {
std::cout << "JIT: STOP. reason: toplevel method" << std::endl;
}
return call_frame;
}
// if(cur->machine_code()->total > SMALL_METHOD_SIZE) {
// if(debug_search) {
// std::cout << "JIT: STOP. reason: big method: "
// << cur->machine_code()->total << " > "
// << SMALL_METHOD_SIZE
// << "\n";
// }
// return call_frame;
// }
// if(!next || cur->machine_code()->total > SMALL_METHOD_SIZE) return call_frame;
callee = call_frame;
call_frame = prev;
}
return callee;
}