CallFrame* LLVMState::find_candidate(CompiledMethod* start, CallFrame* call_frame) {
if(!config_.jit_inline_generic) {
return call_frame;
}
int depth = cInlineMaxDepth;
if(!start) {
start = call_frame->cm;
call_frame = call_frame->previous;
depth--;
}
if(!call_frame || start->backend_method()->total > SMALL_METHOD_SIZE) {
return call_frame;
}
CallFrame* caller = call_frame;
while(depth-- > 0) {
CompiledMethod* cur = call_frame->cm;
VMMethod* vmm = cur->backend_method();
/*
if(call_frame->block_p()
|| vmm->required_args != vmm->total_args // has a splat
|| vmm->call_count < 200 // not called much
|| vmm->jitted() // already jitted
|| vmm->parent() // is a block
) return caller;
*/
if(vmm->required_args != vmm->total_args // has a splat
|| vmm->call_count < 200 // not called much
|| vmm->jitted() // already jitted
|| !vmm->no_inline_p() // method marked as not inlinable
) return caller;
CallFrame* next = call_frame->previous;
if(!next|| cur->backend_method()->total > SMALL_METHOD_SIZE) return call_frame;
caller = call_frame;
call_frame = next;
}
return caller;
}
CallFrame* LLVMState::find_candidate(STATE, CompiledMethod* start, CallFrame* call_frame) {
if(!config_.jit_inline_generic) {
return call_frame;
}
int depth = cInlineMaxDepth;
if(!start) rubinius::bug("null start");
if(!call_frame) rubinius::bug("null call_frame");
// if(!start) {
// start = call_frame->cm;
// call_frame = call_frame->previous;
// depth--;
// }
if(debug_search) {
std::cout << "> call_count: " << call_frame->cm->backend_method()->call_count
<< " size: " << call_frame->cm->backend_method()->total
<< " sends: " << call_frame->cm->backend_method()->inline_cache_count()
<< std::endl;
call_frame->print_backtrace(state, 1);
}
if(start->backend_method()->total > (size_t)config_.jit_max_method_inline_size) {
if(debug_search) {
std::cout << "JIT: STOP. reason: trigger method isn't small: "
<< start->backend_method()->total << " > "
<< config_.jit_max_method_inline_size
<< std::endl;
}
return call_frame;
}
VMMethod* vmm = start->backend_method();
if(vmm->required_args != vmm->total_args) {
if(debug_search) {
std::cout << "JIT: STOP. reason: trigger method req_args != total_args" << std::endl;
}
return call_frame;
}
if(vmm->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) {
CompiledMethod* cur = call_frame->cm;
if(!cur) {
if(debug_search) {
std::cout << "JIT: STOP. reason: synthetic CallFrame hit" << std::endl;
}
return callee;
}
VMMethod* vmm = cur->backend_method();
if(debug_search) {
std::cout << "> call_count: " << vmm->call_count
<< " size: " << vmm->total
<< " sends: " << vmm->inline_cache_count()
<< std::endl;
call_frame->print_backtrace(state, 1);
}
/*
if(call_frame->block_p()
|| vmm->required_args != vmm->total_args // has a splat
|| vmm->call_count < 200 // not called much
|| vmm->jitted() // already jitted
|| vmm->parent() // is a block
) return callee;
*/
if(vmm->required_args != vmm->total_args) {
if(debug_search) {
std::cout << "JIT: STOP. reason: req_args != total_args" << std::endl;
}
return callee;
}
if(vmm->call_count < config_.jit_call_inline_threshold) {
if(debug_search) {
std::cout << "JIT: STOP. reason: call_count too small: "
<< vmm->call_count << " < "
<< config_.jit_call_inline_threshold << std::endl;
}
return callee;
}
if(vmm->jitted()) {
if(debug_search) {
std::cout << "JIT: STOP. reason: already jitted" << std::endl;
}
return callee;
}
if(vmm->no_inline_p()) {
if(debug_search) {
std::cout << "JIT: STOP. reason: no_inline_p() = true" << std::endl;
}
return callee;
}
if(vmm->inline_cache_count() > eMaxInlineSendCount) {
if(debug_search) {
std::cout << "JIT: STOP. reason: high send count" << std::endl;
}
return call_frame;
}
// if(vmm->required_args != vmm->total_args // has a splat
// || vmm->call_count < 200 // not called much
// || vmm->jitted() // already jitted
// || !vmm->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->backend_method()->total > SMALL_METHOD_SIZE) {
// if(debug_search) {
// std::cout << "JIT: STOP. reason: big method: "
// << cur->backend_method()->total << " > "
// << SMALL_METHOD_SIZE
// << "\n";
// }
// return call_frame;
// }
// if(!next || cur->backend_method()->total > SMALL_METHOD_SIZE) return call_frame;
callee->cm->backend_method()->call_count = 0;
callee = call_frame;
call_frame = prev;
}
return callee;
}
