author | never |
Wed, 15 Sep 2010 20:25:37 -0700 | |
changeset 6739 | 750998abc20f |
parent 5547 | f4b087cbb361 |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "incls/_precompiled.incl" |
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#include "incls/_callGenerator.cpp.incl" |
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CallGenerator::CallGenerator(ciMethod* method) { |
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_method = method; |
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} |
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// Utility function. |
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const TypeFunc* CallGenerator::tf() const { |
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return TypeFunc::make(method()); |
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} |
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//-----------------------------ParseGenerator--------------------------------- |
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// Internal class which handles all direct bytecode traversal. |
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class ParseGenerator : public InlineCallGenerator { |
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private: |
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bool _is_osr; |
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float _expected_uses; |
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public: |
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ParseGenerator(ciMethod* method, float expected_uses, bool is_osr = false) |
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: InlineCallGenerator(method) |
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{ |
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_is_osr = is_osr; |
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_expected_uses = expected_uses; |
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assert(can_parse(method, is_osr), "parse must be possible"); |
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} |
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// Can we build either an OSR or a regular parser for this method? |
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static bool can_parse(ciMethod* method, int is_osr = false); |
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virtual bool is_parse() const { return true; } |
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virtual JVMState* generate(JVMState* jvms); |
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int is_osr() { return _is_osr; } |
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}; |
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JVMState* ParseGenerator::generate(JVMState* jvms) { |
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Compile* C = Compile::current(); |
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if (is_osr()) { |
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// The JVMS for a OSR has a single argument (see its TypeFunc). |
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assert(jvms->depth() == 1, "no inline OSR"); |
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} |
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if (C->failing()) { |
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return NULL; // bailing out of the compile; do not try to parse |
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} |
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Parse parser(jvms, method(), _expected_uses); |
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// Grab signature for matching/allocation |
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#ifdef ASSERT |
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if (parser.tf() != (parser.depth() == 1 ? C->tf() : tf())) { |
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MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag); |
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assert(C->env()->system_dictionary_modification_counter_changed(), |
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"Must invalidate if TypeFuncs differ"); |
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} |
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#endif |
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GraphKit& exits = parser.exits(); |
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if (C->failing()) { |
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while (exits.pop_exception_state() != NULL) ; |
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return NULL; |
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} |
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assert(exits.jvms()->same_calls_as(jvms), "sanity"); |
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// Simply return the exit state of the parser, |
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// augmented by any exceptional states. |
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return exits.transfer_exceptions_into_jvms(); |
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} |
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//---------------------------DirectCallGenerator------------------------------ |
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// Internal class which handles all out-of-line calls w/o receiver type checks. |
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class DirectCallGenerator : public CallGenerator { |
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private: |
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CallStaticJavaNode* _call_node; |
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// Force separate memory and I/O projections for the exceptional |
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// paths to facilitate late inlinig. |
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bool _separate_io_proj; |
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public: |
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DirectCallGenerator(ciMethod* method, bool separate_io_proj) |
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: CallGenerator(method), |
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_separate_io_proj(separate_io_proj) |
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{ |
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} |
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virtual JVMState* generate(JVMState* jvms); |
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CallStaticJavaNode* call_node() const { return _call_node; } |
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}; |
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JVMState* DirectCallGenerator::generate(JVMState* jvms) { |
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GraphKit kit(jvms); |
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bool is_static = method()->is_static(); |
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address target = is_static ? SharedRuntime::get_resolve_static_call_stub() |
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: SharedRuntime::get_resolve_opt_virtual_call_stub(); |
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if (kit.C->log() != NULL) { |
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kit.C->log()->elem("direct_call bci='%d'", jvms->bci()); |
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} |
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CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), target, method(), kit.bci()); |
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if (!is_static) { |
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// Make an explicit receiver null_check as part of this call. |
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// Since we share a map with the caller, his JVMS gets adjusted. |
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kit.null_check_receiver(method()); |
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if (kit.stopped()) { |
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// And dump it back to the caller, decorated with any exceptions: |
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return kit.transfer_exceptions_into_jvms(); |
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} |
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// Mark the call node as virtual, sort of: |
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call->set_optimized_virtual(true); |
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if (method()->is_method_handle_invoke()) { |
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call->set_method_handle_invoke(true); |
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kit.C->set_has_method_handle_invokes(true); |
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} |
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} |
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kit.set_arguments_for_java_call(call); |
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kit.set_edges_for_java_call(call, false, _separate_io_proj); |
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Node* ret = kit.set_results_for_java_call(call, _separate_io_proj); |
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kit.push_node(method()->return_type()->basic_type(), ret); |
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_call_node = call; // Save the call node in case we need it later |
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return kit.transfer_exceptions_into_jvms(); |
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} |
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//---------------------------DynamicCallGenerator----------------------------- |
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// Internal class which handles all out-of-line invokedynamic calls. |
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class DynamicCallGenerator : public CallGenerator { |
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public: |
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DynamicCallGenerator(ciMethod* method) |
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: CallGenerator(method) |
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{ |
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} |
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virtual JVMState* generate(JVMState* jvms); |
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}; |
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JVMState* DynamicCallGenerator::generate(JVMState* jvms) { |
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GraphKit kit(jvms); |
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if (kit.C->log() != NULL) { |
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kit.C->log()->elem("dynamic_call bci='%d'", jvms->bci()); |
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} |
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// Get the constant pool cache from the caller class. |
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ciMethod* caller_method = jvms->method(); |
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ciBytecodeStream str(caller_method); |
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str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!"); |
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ciCPCache* cpcache = str.get_cpcache(); |
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// Get the offset of the CallSite from the constant pool cache |
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// pointer. |
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int index = str.get_method_index(); |
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size_t call_site_offset = cpcache->get_f1_offset(index); |
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// Load the CallSite object from the constant pool cache. |
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const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
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Node* cpcache_adr = kit.makecon(cpcache_ptr); |
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Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
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Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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// Load the target MethodHandle from the CallSite object. |
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Node* target_mh_adr = kit.basic_plus_adr(call_site, call_site, java_dyn_CallSite::target_offset_in_bytes()); |
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Node* target_mh = kit.make_load(kit.control(), target_mh_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub(); |
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CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci()); |
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// invokedynamic is treated as an optimized invokevirtual. |
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call->set_optimized_virtual(true); |
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// Take extra care (in the presence of argument motion) not to trash the SP: |
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call->set_method_handle_invoke(true); |
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kit.C->set_has_method_handle_invokes(true); |
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// Pass the target MethodHandle as first argument and shift the |
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// other arguments. |
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call->init_req(0 + TypeFunc::Parms, target_mh); |
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uint nargs = call->method()->arg_size(); |
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for (uint i = 1; i < nargs; i++) { |
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Node* arg = kit.argument(i - 1); |
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call->init_req(i + TypeFunc::Parms, arg); |
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} |
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kit.set_edges_for_java_call(call); |
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Node* ret = kit.set_results_for_java_call(call); |
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kit.push_node(method()->return_type()->basic_type(), ret); |
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return kit.transfer_exceptions_into_jvms(); |
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} |
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//--------------------------VirtualCallGenerator------------------------------ |
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// Internal class which handles all out-of-line calls checking receiver type. |
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class VirtualCallGenerator : public CallGenerator { |
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private: |
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int _vtable_index; |
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public: |
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VirtualCallGenerator(ciMethod* method, int vtable_index) |
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: CallGenerator(method), _vtable_index(vtable_index) |
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{ |
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assert(vtable_index == methodOopDesc::invalid_vtable_index || |
|
226 |
vtable_index >= 0, "either invalid or usable"); |
|
227 |
} |
|
228 |
virtual bool is_virtual() const { return true; } |
|
229 |
virtual JVMState* generate(JVMState* jvms); |
|
230 |
}; |
|
231 |
||
232 |
JVMState* VirtualCallGenerator::generate(JVMState* jvms) { |
|
233 |
GraphKit kit(jvms); |
|
234 |
Node* receiver = kit.argument(0); |
|
235 |
||
236 |
if (kit.C->log() != NULL) { |
|
237 |
kit.C->log()->elem("virtual_call bci='%d'", jvms->bci()); |
|
238 |
} |
|
239 |
||
240 |
// If the receiver is a constant null, do not torture the system |
|
241 |
// by attempting to call through it. The compile will proceed |
|
242 |
// correctly, but may bail out in final_graph_reshaping, because |
|
243 |
// the call instruction will have a seemingly deficient out-count. |
|
244 |
// (The bailout says something misleading about an "infinite loop".) |
|
245 |
if (kit.gvn().type(receiver)->higher_equal(TypePtr::NULL_PTR)) { |
|
246 |
kit.inc_sp(method()->arg_size()); // restore arguments |
|
247 |
kit.uncommon_trap(Deoptimization::Reason_null_check, |
|
248 |
Deoptimization::Action_none, |
|
249 |
NULL, "null receiver"); |
|
250 |
return kit.transfer_exceptions_into_jvms(); |
|
251 |
} |
|
252 |
||
253 |
// Ideally we would unconditionally do a null check here and let it |
|
254 |
// be converted to an implicit check based on profile information. |
|
255 |
// However currently the conversion to implicit null checks in |
|
256 |
// Block::implicit_null_check() only looks for loads and stores, not calls. |
|
257 |
ciMethod *caller = kit.method(); |
|
258 |
ciMethodData *caller_md = (caller == NULL) ? NULL : caller->method_data(); |
|
259 |
if (!UseInlineCaches || !ImplicitNullChecks || |
|
260 |
((ImplicitNullCheckThreshold > 0) && caller_md && |
|
261 |
(caller_md->trap_count(Deoptimization::Reason_null_check) |
|
262 |
>= (uint)ImplicitNullCheckThreshold))) { |
|
263 |
// Make an explicit receiver null_check as part of this call. |
|
264 |
// Since we share a map with the caller, his JVMS gets adjusted. |
|
265 |
receiver = kit.null_check_receiver(method()); |
|
266 |
if (kit.stopped()) { |
|
267 |
// And dump it back to the caller, decorated with any exceptions: |
|
268 |
return kit.transfer_exceptions_into_jvms(); |
|
269 |
} |
|
270 |
} |
|
271 |
||
272 |
assert(!method()->is_static(), "virtual call must not be to static"); |
|
273 |
assert(!method()->is_final(), "virtual call should not be to final"); |
|
274 |
assert(!method()->is_private(), "virtual call should not be to private"); |
|
275 |
assert(_vtable_index == methodOopDesc::invalid_vtable_index || !UseInlineCaches, |
|
276 |
"no vtable calls if +UseInlineCaches "); |
|
277 |
address target = SharedRuntime::get_resolve_virtual_call_stub(); |
|
278 |
// Normal inline cache used for call |
|
279 |
CallDynamicJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallDynamicJavaNode(tf(), target, method(), _vtable_index, kit.bci()); |
|
280 |
kit.set_arguments_for_java_call(call); |
|
281 |
kit.set_edges_for_java_call(call); |
|
282 |
Node* ret = kit.set_results_for_java_call(call); |
|
283 |
kit.push_node(method()->return_type()->basic_type(), ret); |
|
284 |
||
285 |
// Represent the effect of an implicit receiver null_check |
|
286 |
// as part of this call. Since we share a map with the caller, |
|
287 |
// his JVMS gets adjusted. |
|
288 |
kit.cast_not_null(receiver); |
|
289 |
return kit.transfer_exceptions_into_jvms(); |
|
290 |
} |
|
291 |
||
292 |
bool ParseGenerator::can_parse(ciMethod* m, int entry_bci) { |
|
293 |
// Certain methods cannot be parsed at all: |
|
294 |
if (!m->can_be_compiled()) return false; |
|
295 |
if (!m->has_balanced_monitors()) return false; |
|
296 |
if (m->get_flow_analysis()->failing()) return false; |
|
297 |
||
298 |
// (Methods may bail out for other reasons, after the parser is run. |
|
299 |
// We try to avoid this, but if forced, we must return (Node*)NULL. |
|
300 |
// The user of the CallGenerator must check for this condition.) |
|
301 |
return true; |
|
302 |
} |
|
303 |
||
304 |
CallGenerator* CallGenerator::for_inline(ciMethod* m, float expected_uses) { |
|
305 |
if (!ParseGenerator::can_parse(m)) return NULL; |
|
306 |
return new ParseGenerator(m, expected_uses); |
|
307 |
} |
|
308 |
||
309 |
// As a special case, the JVMS passed to this CallGenerator is |
|
310 |
// for the method execution already in progress, not just the JVMS |
|
311 |
// of the caller. Thus, this CallGenerator cannot be mixed with others! |
|
312 |
CallGenerator* CallGenerator::for_osr(ciMethod* m, int osr_bci) { |
|
313 |
if (!ParseGenerator::can_parse(m, true)) return NULL; |
|
314 |
float past_uses = m->interpreter_invocation_count(); |
|
315 |
float expected_uses = past_uses; |
|
316 |
return new ParseGenerator(m, expected_uses, true); |
|
317 |
} |
|
318 |
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CallGenerator* CallGenerator::for_direct_call(ciMethod* m, bool separate_io_proj) { |
1 | 320 |
assert(!m->is_abstract(), "for_direct_call mismatch"); |
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321 |
return new DirectCallGenerator(m, separate_io_proj); |
1 | 322 |
} |
323 |
||
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324 |
CallGenerator* CallGenerator::for_dynamic_call(ciMethod* m) { |
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325 |
assert(m->is_method_handle_invoke(), "for_dynamic_call mismatch"); |
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|
326 |
return new DynamicCallGenerator(m); |
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|
327 |
} |
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|
328 |
|
1 | 329 |
CallGenerator* CallGenerator::for_virtual_call(ciMethod* m, int vtable_index) { |
330 |
assert(!m->is_static(), "for_virtual_call mismatch"); |
|
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|
331 |
assert(!m->is_method_handle_invoke(), "should be a direct call"); |
1 | 332 |
return new VirtualCallGenerator(m, vtable_index); |
333 |
} |
|
334 |
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335 |
// Allow inlining decisions to be delayed |
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|
336 |
class LateInlineCallGenerator : public DirectCallGenerator { |
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|
337 |
CallGenerator* _inline_cg; |
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|
338 |
|
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|
339 |
public: |
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|
340 |
LateInlineCallGenerator(ciMethod* method, CallGenerator* inline_cg) : |
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341 |
DirectCallGenerator(method, true), _inline_cg(inline_cg) {} |
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|
342 |
|
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343 |
virtual bool is_late_inline() const { return true; } |
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|
344 |
|
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|
345 |
// Convert the CallStaticJava into an inline |
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|
346 |
virtual void do_late_inline(); |
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|
347 |
|
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|
348 |
JVMState* generate(JVMState* jvms) { |
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|
349 |
// Record that this call site should be revisited once the main |
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|
350 |
// parse is finished. |
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|
351 |
Compile::current()->add_late_inline(this); |
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|
352 |
|
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|
353 |
// Emit the CallStaticJava and request separate projections so |
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|
354 |
// that the late inlining logic can distinguish between fall |
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|
355 |
// through and exceptional uses of the memory and io projections |
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|
356 |
// as is done for allocations and macro expansion. |
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|
357 |
return DirectCallGenerator::generate(jvms); |
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|
358 |
} |
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|
359 |
|
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|
360 |
}; |
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|
361 |
|
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|
362 |
|
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|
363 |
void LateInlineCallGenerator::do_late_inline() { |
6d700b859b3e
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|
364 |
// Can't inline it |
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|
365 |
if (call_node() == NULL || call_node()->outcnt() == 0 || |
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|
366 |
call_node()->in(0) == NULL || call_node()->in(0)->is_top()) |
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|
367 |
return; |
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|
368 |
|
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|
369 |
CallStaticJavaNode* call = call_node(); |
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|
370 |
|
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|
371 |
// Make a clone of the JVMState that appropriate to use for driving a parse |
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|
372 |
Compile* C = Compile::current(); |
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|
373 |
JVMState* jvms = call->jvms()->clone_shallow(C); |
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|
374 |
uint size = call->req(); |
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|
375 |
SafePointNode* map = new (C, size) SafePointNode(size, jvms); |
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|
376 |
for (uint i1 = 0; i1 < size; i1++) { |
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|
377 |
map->init_req(i1, call->in(i1)); |
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|
378 |
} |
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|
379 |
|
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|
380 |
// Make sure the state is a MergeMem for parsing. |
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|
381 |
if (!map->in(TypeFunc::Memory)->is_MergeMem()) { |
6d700b859b3e
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|
382 |
map->set_req(TypeFunc::Memory, MergeMemNode::make(C, map->in(TypeFunc::Memory))); |
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|
383 |
} |
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|
384 |
|
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|
385 |
// Make enough space for the expression stack and transfer the incoming arguments |
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|
386 |
int nargs = method()->arg_size(); |
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|
387 |
jvms->set_map(map); |
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|
388 |
map->ensure_stack(jvms, jvms->method()->max_stack()); |
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|
389 |
if (nargs > 0) { |
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|
390 |
for (int i1 = 0; i1 < nargs; i1++) { |
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|
391 |
map->set_req(i1 + jvms->argoff(), call->in(TypeFunc::Parms + i1)); |
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|
392 |
} |
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|
393 |
} |
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|
394 |
|
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|
395 |
CompileLog* log = C->log(); |
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|
396 |
if (log != NULL) { |
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|
397 |
log->head("late_inline method='%d'", log->identify(method())); |
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|
398 |
JVMState* p = jvms; |
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|
399 |
while (p != NULL) { |
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|
400 |
log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method())); |
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|
401 |
p = p->caller(); |
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|
402 |
} |
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|
403 |
log->tail("late_inline"); |
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|
404 |
} |
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|
405 |
|
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|
406 |
// Setup default node notes to be picked up by the inlining |
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|
407 |
Node_Notes* old_nn = C->default_node_notes(); |
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|
408 |
if (old_nn != NULL) { |
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|
409 |
Node_Notes* entry_nn = old_nn->clone(C); |
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|
410 |
entry_nn->set_jvms(jvms); |
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|
411 |
C->set_default_node_notes(entry_nn); |
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|
412 |
} |
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|
413 |
|
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|
414 |
// Now perform the inling using the synthesized JVMState |
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|
415 |
JVMState* new_jvms = _inline_cg->generate(jvms); |
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|
416 |
if (new_jvms == NULL) return; // no change |
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|
417 |
if (C->failing()) return; |
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|
418 |
|
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|
419 |
// Capture any exceptional control flow |
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|
420 |
GraphKit kit(new_jvms); |
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|
421 |
|
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|
422 |
// Find the result object |
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|
423 |
Node* result = C->top(); |
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|
424 |
int result_size = method()->return_type()->size(); |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
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parents:
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diff
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|
425 |
if (result_size != 0 && !kit.stopped()) { |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1217
diff
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|
426 |
result = (result_size == 1) ? kit.pop() : kit.pop_pair(); |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1217
diff
changeset
|
427 |
} |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1217
diff
changeset
|
428 |
|
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1217
diff
changeset
|
429 |
kit.replace_call(call, result); |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1217
diff
changeset
|
430 |
} |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
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parents:
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diff
changeset
|
431 |
|
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
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changeset
|
432 |
|
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
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parents:
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|
433 |
CallGenerator* CallGenerator::for_late_inline(ciMethod* method, CallGenerator* inline_cg) { |
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
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parents:
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|
434 |
return new LateInlineCallGenerator(method, inline_cg); |
6d700b859b3e
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parents:
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|
435 |
} |
6d700b859b3e
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|
436 |
|
1 | 437 |
|
438 |
//---------------------------WarmCallGenerator-------------------------------- |
|
439 |
// Internal class which handles initial deferral of inlining decisions. |
|
440 |
class WarmCallGenerator : public CallGenerator { |
|
441 |
WarmCallInfo* _call_info; |
|
442 |
CallGenerator* _if_cold; |
|
443 |
CallGenerator* _if_hot; |
|
444 |
bool _is_virtual; // caches virtuality of if_cold |
|
445 |
bool _is_inline; // caches inline-ness of if_hot |
|
446 |
||
447 |
public: |
|
448 |
WarmCallGenerator(WarmCallInfo* ci, |
|
449 |
CallGenerator* if_cold, |
|
450 |
CallGenerator* if_hot) |
|
451 |
: CallGenerator(if_cold->method()) |
|
452 |
{ |
|
453 |
assert(method() == if_hot->method(), "consistent choices"); |
|
454 |
_call_info = ci; |
|
455 |
_if_cold = if_cold; |
|
456 |
_if_hot = if_hot; |
|
457 |
_is_virtual = if_cold->is_virtual(); |
|
458 |
_is_inline = if_hot->is_inline(); |
|
459 |
} |
|
460 |
||
461 |
virtual bool is_inline() const { return _is_inline; } |
|
462 |
virtual bool is_virtual() const { return _is_virtual; } |
|
463 |
virtual bool is_deferred() const { return true; } |
|
464 |
||
465 |
virtual JVMState* generate(JVMState* jvms); |
|
466 |
}; |
|
467 |
||
468 |
||
469 |
CallGenerator* CallGenerator::for_warm_call(WarmCallInfo* ci, |
|
470 |
CallGenerator* if_cold, |
|
471 |
CallGenerator* if_hot) { |
|
472 |
return new WarmCallGenerator(ci, if_cold, if_hot); |
|
473 |
} |
|
474 |
||
475 |
JVMState* WarmCallGenerator::generate(JVMState* jvms) { |
|
476 |
Compile* C = Compile::current(); |
|
477 |
if (C->log() != NULL) { |
|
478 |
C->log()->elem("warm_call bci='%d'", jvms->bci()); |
|
479 |
} |
|
480 |
jvms = _if_cold->generate(jvms); |
|
481 |
if (jvms != NULL) { |
|
482 |
Node* m = jvms->map()->control(); |
|
483 |
if (m->is_CatchProj()) m = m->in(0); else m = C->top(); |
|
484 |
if (m->is_Catch()) m = m->in(0); else m = C->top(); |
|
485 |
if (m->is_Proj()) m = m->in(0); else m = C->top(); |
|
486 |
if (m->is_CallJava()) { |
|
487 |
_call_info->set_call(m->as_Call()); |
|
488 |
_call_info->set_hot_cg(_if_hot); |
|
489 |
#ifndef PRODUCT |
|
490 |
if (PrintOpto || PrintOptoInlining) { |
|
491 |
tty->print_cr("Queueing for warm inlining at bci %d:", jvms->bci()); |
|
492 |
tty->print("WCI: "); |
|
493 |
_call_info->print(); |
|
494 |
} |
|
495 |
#endif |
|
496 |
_call_info->set_heat(_call_info->compute_heat()); |
|
497 |
C->set_warm_calls(_call_info->insert_into(C->warm_calls())); |
|
498 |
} |
|
499 |
} |
|
500 |
return jvms; |
|
501 |
} |
|
502 |
||
503 |
void WarmCallInfo::make_hot() { |
|
4450
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|
504 |
Unimplemented(); |
1 | 505 |
} |
506 |
||
507 |
void WarmCallInfo::make_cold() { |
|
508 |
// No action: Just dequeue. |
|
509 |
} |
|
510 |
||
511 |
||
512 |
//------------------------PredictedCallGenerator------------------------------ |
|
513 |
// Internal class which handles all out-of-line calls checking receiver type. |
|
514 |
class PredictedCallGenerator : public CallGenerator { |
|
515 |
ciKlass* _predicted_receiver; |
|
516 |
CallGenerator* _if_missed; |
|
517 |
CallGenerator* _if_hit; |
|
518 |
float _hit_prob; |
|
519 |
||
520 |
public: |
|
521 |
PredictedCallGenerator(ciKlass* predicted_receiver, |
|
522 |
CallGenerator* if_missed, |
|
523 |
CallGenerator* if_hit, float hit_prob) |
|
524 |
: CallGenerator(if_missed->method()) |
|
525 |
{ |
|
526 |
// The call profile data may predict the hit_prob as extreme as 0 or 1. |
|
527 |
// Remove the extremes values from the range. |
|
528 |
if (hit_prob > PROB_MAX) hit_prob = PROB_MAX; |
|
529 |
if (hit_prob < PROB_MIN) hit_prob = PROB_MIN; |
|
530 |
||
531 |
_predicted_receiver = predicted_receiver; |
|
532 |
_if_missed = if_missed; |
|
533 |
_if_hit = if_hit; |
|
534 |
_hit_prob = hit_prob; |
|
535 |
} |
|
536 |
||
537 |
virtual bool is_virtual() const { return true; } |
|
538 |
virtual bool is_inline() const { return _if_hit->is_inline(); } |
|
539 |
virtual bool is_deferred() const { return _if_hit->is_deferred(); } |
|
540 |
||
541 |
virtual JVMState* generate(JVMState* jvms); |
|
542 |
}; |
|
543 |
||
544 |
||
545 |
CallGenerator* CallGenerator::for_predicted_call(ciKlass* predicted_receiver, |
|
546 |
CallGenerator* if_missed, |
|
547 |
CallGenerator* if_hit, |
|
548 |
float hit_prob) { |
|
549 |
return new PredictedCallGenerator(predicted_receiver, if_missed, if_hit, hit_prob); |
|
550 |
} |
|
551 |
||
552 |
||
553 |
JVMState* PredictedCallGenerator::generate(JVMState* jvms) { |
|
554 |
GraphKit kit(jvms); |
|
555 |
PhaseGVN& gvn = kit.gvn(); |
|
556 |
// We need an explicit receiver null_check before checking its type. |
|
557 |
// We share a map with the caller, so his JVMS gets adjusted. |
|
558 |
Node* receiver = kit.argument(0); |
|
559 |
||
560 |
CompileLog* log = kit.C->log(); |
|
561 |
if (log != NULL) { |
|
562 |
log->elem("predicted_call bci='%d' klass='%d'", |
|
563 |
jvms->bci(), log->identify(_predicted_receiver)); |
|
564 |
} |
|
565 |
||
566 |
receiver = kit.null_check_receiver(method()); |
|
567 |
if (kit.stopped()) { |
|
568 |
return kit.transfer_exceptions_into_jvms(); |
|
569 |
} |
|
570 |
||
571 |
Node* exact_receiver = receiver; // will get updated in place... |
|
572 |
Node* slow_ctl = kit.type_check_receiver(receiver, |
|
573 |
_predicted_receiver, _hit_prob, |
|
574 |
&exact_receiver); |
|
575 |
||
576 |
SafePointNode* slow_map = NULL; |
|
577 |
JVMState* slow_jvms; |
|
578 |
{ PreserveJVMState pjvms(&kit); |
|
579 |
kit.set_control(slow_ctl); |
|
580 |
if (!kit.stopped()) { |
|
581 |
slow_jvms = _if_missed->generate(kit.sync_jvms()); |
|
582 |
assert(slow_jvms != NULL, "miss path must not fail to generate"); |
|
583 |
kit.add_exception_states_from(slow_jvms); |
|
584 |
kit.set_map(slow_jvms->map()); |
|
585 |
if (!kit.stopped()) |
|
586 |
slow_map = kit.stop(); |
|
587 |
} |
|
588 |
} |
|
589 |
||
1055
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
590 |
if (kit.stopped()) { |
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
591 |
// Instance exactly does not matches the desired type. |
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
592 |
kit.set_jvms(slow_jvms); |
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
593 |
return kit.transfer_exceptions_into_jvms(); |
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
594 |
} |
f4fb9fb08038
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
1
diff
changeset
|
595 |
|
1 | 596 |
// fall through if the instance exactly matches the desired type |
597 |
kit.replace_in_map(receiver, exact_receiver); |
|
598 |
||
599 |
// Make the hot call: |
|
600 |
JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
|
601 |
if (new_jvms == NULL) { |
|
602 |
// Inline failed, so make a direct call. |
|
603 |
assert(_if_hit->is_inline(), "must have been a failed inline"); |
|
604 |
CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
|
605 |
new_jvms = cg->generate(kit.sync_jvms()); |
|
606 |
} |
|
607 |
kit.add_exception_states_from(new_jvms); |
|
608 |
kit.set_jvms(new_jvms); |
|
609 |
||
610 |
// Need to merge slow and fast? |
|
611 |
if (slow_map == NULL) { |
|
612 |
// The fast path is the only path remaining. |
|
613 |
return kit.transfer_exceptions_into_jvms(); |
|
614 |
} |
|
615 |
||
616 |
if (kit.stopped()) { |
|
617 |
// Inlined method threw an exception, so it's just the slow path after all. |
|
618 |
kit.set_jvms(slow_jvms); |
|
619 |
return kit.transfer_exceptions_into_jvms(); |
|
620 |
} |
|
621 |
||
622 |
// Finish the diamond. |
|
623 |
kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
|
624 |
RegionNode* region = new (kit.C, 3) RegionNode(3); |
|
625 |
region->init_req(1, kit.control()); |
|
626 |
region->init_req(2, slow_map->control()); |
|
627 |
kit.set_control(gvn.transform(region)); |
|
628 |
Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
|
629 |
iophi->set_req(2, slow_map->i_o()); |
|
630 |
kit.set_i_o(gvn.transform(iophi)); |
|
631 |
kit.merge_memory(slow_map->merged_memory(), region, 2); |
|
632 |
uint tos = kit.jvms()->stkoff() + kit.sp(); |
|
633 |
uint limit = slow_map->req(); |
|
634 |
for (uint i = TypeFunc::Parms; i < limit; i++) { |
|
635 |
// Skip unused stack slots; fast forward to monoff(); |
|
636 |
if (i == tos) { |
|
637 |
i = kit.jvms()->monoff(); |
|
638 |
if( i >= limit ) break; |
|
639 |
} |
|
640 |
Node* m = kit.map()->in(i); |
|
641 |
Node* n = slow_map->in(i); |
|
642 |
if (m != n) { |
|
643 |
const Type* t = gvn.type(m)->meet(gvn.type(n)); |
|
644 |
Node* phi = PhiNode::make(region, m, t); |
|
645 |
phi->set_req(2, n); |
|
646 |
kit.map()->set_req(i, gvn.transform(phi)); |
|
647 |
} |
|
648 |
} |
|
649 |
return kit.transfer_exceptions_into_jvms(); |
|
650 |
} |
|
651 |
||
652 |
||
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
653 |
//------------------------PredictedDynamicCallGenerator----------------------- |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
654 |
// Internal class which handles all out-of-line calls checking receiver type. |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
655 |
class PredictedDynamicCallGenerator : public CallGenerator { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
656 |
ciMethodHandle* _predicted_method_handle; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
657 |
CallGenerator* _if_missed; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
658 |
CallGenerator* _if_hit; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
659 |
float _hit_prob; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
660 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
661 |
public: |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
662 |
PredictedDynamicCallGenerator(ciMethodHandle* predicted_method_handle, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
663 |
CallGenerator* if_missed, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
664 |
CallGenerator* if_hit, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
665 |
float hit_prob) |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
666 |
: CallGenerator(if_missed->method()), |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
667 |
_predicted_method_handle(predicted_method_handle), |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
668 |
_if_missed(if_missed), |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
669 |
_if_hit(if_hit), |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
670 |
_hit_prob(hit_prob) |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
671 |
{} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
672 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
673 |
virtual bool is_inline() const { return _if_hit->is_inline(); } |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
674 |
virtual bool is_deferred() const { return _if_hit->is_deferred(); } |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
675 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
676 |
virtual JVMState* generate(JVMState* jvms); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
677 |
}; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
678 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
679 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
680 |
CallGenerator* CallGenerator::for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
681 |
CallGenerator* if_missed, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
682 |
CallGenerator* if_hit, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
683 |
float hit_prob) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
684 |
return new PredictedDynamicCallGenerator(predicted_method_handle, if_missed, if_hit, hit_prob); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
685 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
686 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
687 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
688 |
JVMState* PredictedDynamicCallGenerator::generate(JVMState* jvms) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
689 |
GraphKit kit(jvms); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
690 |
PhaseGVN& gvn = kit.gvn(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
691 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
692 |
CompileLog* log = kit.C->log(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
693 |
if (log != NULL) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
694 |
log->elem("predicted_dynamic_call bci='%d'", jvms->bci()); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
695 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
696 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
697 |
// Get the constant pool cache from the caller class. |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
698 |
ciMethod* caller_method = jvms->method(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
699 |
ciBytecodeStream str(caller_method); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
700 |
str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
701 |
ciCPCache* cpcache = str.get_cpcache(); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
702 |
|
7fc02fbe5c7a
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diff
changeset
|
703 |
// Get the offset of the CallSite from the constant pool cache |
7fc02fbe5c7a
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diff
changeset
|
704 |
// pointer. |
7fc02fbe5c7a
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diff
changeset
|
705 |
int index = str.get_method_index(); |
7fc02fbe5c7a
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diff
changeset
|
706 |
size_t call_site_offset = cpcache->get_f1_offset(index); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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4566
diff
changeset
|
707 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
708 |
// Load the CallSite object from the constant pool cache. |
7fc02fbe5c7a
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diff
changeset
|
709 |
const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
7fc02fbe5c7a
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diff
changeset
|
710 |
Node* cpcache_adr = kit.makecon(cpcache_ptr); |
7fc02fbe5c7a
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changeset
|
711 |
Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
7fc02fbe5c7a
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changeset
|
712 |
Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
7fc02fbe5c7a
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diff
changeset
|
713 |
|
7fc02fbe5c7a
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parents:
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diff
changeset
|
714 |
// Load the target MethodHandle from the CallSite object. |
7fc02fbe5c7a
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diff
changeset
|
715 |
Node* target_adr = kit.basic_plus_adr(call_site, call_site, java_dyn_CallSite::target_offset_in_bytes()); |
7fc02fbe5c7a
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diff
changeset
|
716 |
Node* target_mh = kit.make_load(kit.control(), target_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
7fc02fbe5c7a
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diff
changeset
|
717 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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4566
diff
changeset
|
718 |
// Check if the MethodHandle is still the same. |
7fc02fbe5c7a
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changeset
|
719 |
const TypeOopPtr* predicted_mh_ptr = TypeOopPtr::make_from_constant(_predicted_method_handle, true); |
7fc02fbe5c7a
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changeset
|
720 |
Node* predicted_mh = kit.makecon(predicted_mh_ptr); |
7fc02fbe5c7a
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diff
changeset
|
721 |
|
7fc02fbe5c7a
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diff
changeset
|
722 |
Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(target_mh, predicted_mh)); |
7fc02fbe5c7a
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diff
changeset
|
723 |
Node* bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
7fc02fbe5c7a
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changeset
|
724 |
IfNode* iff = kit.create_and_xform_if(kit.control(), bol, _hit_prob, COUNT_UNKNOWN); |
7fc02fbe5c7a
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changeset
|
725 |
kit.set_control( gvn.transform(new(kit.C, 1) IfTrueNode (iff))); |
7fc02fbe5c7a
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diff
changeset
|
726 |
Node* slow_ctl = gvn.transform(new(kit.C, 1) IfFalseNode(iff)); |
7fc02fbe5c7a
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diff
changeset
|
727 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
728 |
SafePointNode* slow_map = NULL; |
7fc02fbe5c7a
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diff
changeset
|
729 |
JVMState* slow_jvms; |
7fc02fbe5c7a
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diff
changeset
|
730 |
{ PreserveJVMState pjvms(&kit); |
7fc02fbe5c7a
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diff
changeset
|
731 |
kit.set_control(slow_ctl); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
732 |
if (!kit.stopped()) { |
7fc02fbe5c7a
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twisti
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diff
changeset
|
733 |
slow_jvms = _if_missed->generate(kit.sync_jvms()); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
734 |
assert(slow_jvms != NULL, "miss path must not fail to generate"); |
7fc02fbe5c7a
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diff
changeset
|
735 |
kit.add_exception_states_from(slow_jvms); |
7fc02fbe5c7a
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changeset
|
736 |
kit.set_map(slow_jvms->map()); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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4566
diff
changeset
|
737 |
if (!kit.stopped()) |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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parents:
4566
diff
changeset
|
738 |
slow_map = kit.stop(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
739 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
740 |
} |
7fc02fbe5c7a
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twisti
parents:
4566
diff
changeset
|
741 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
742 |
if (kit.stopped()) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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4566
diff
changeset
|
743 |
// Instance exactly does not matches the desired type. |
7fc02fbe5c7a
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changeset
|
744 |
kit.set_jvms(slow_jvms); |
7fc02fbe5c7a
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changeset
|
745 |
return kit.transfer_exceptions_into_jvms(); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
746 |
} |
7fc02fbe5c7a
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4566
diff
changeset
|
747 |
|
7fc02fbe5c7a
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diff
changeset
|
748 |
// Make the hot call: |
7fc02fbe5c7a
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diff
changeset
|
749 |
JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
7fc02fbe5c7a
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changeset
|
750 |
if (new_jvms == NULL) { |
7fc02fbe5c7a
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diff
changeset
|
751 |
// Inline failed, so make a direct call. |
7fc02fbe5c7a
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changeset
|
752 |
assert(_if_hit->is_inline(), "must have been a failed inline"); |
7fc02fbe5c7a
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diff
changeset
|
753 |
CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
7fc02fbe5c7a
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changeset
|
754 |
new_jvms = cg->generate(kit.sync_jvms()); |
7fc02fbe5c7a
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diff
changeset
|
755 |
} |
7fc02fbe5c7a
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diff
changeset
|
756 |
kit.add_exception_states_from(new_jvms); |
7fc02fbe5c7a
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changeset
|
757 |
kit.set_jvms(new_jvms); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
758 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
759 |
// Need to merge slow and fast? |
7fc02fbe5c7a
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diff
changeset
|
760 |
if (slow_map == NULL) { |
7fc02fbe5c7a
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diff
changeset
|
761 |
// The fast path is the only path remaining. |
7fc02fbe5c7a
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changeset
|
762 |
return kit.transfer_exceptions_into_jvms(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
763 |
} |
7fc02fbe5c7a
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twisti
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diff
changeset
|
764 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
765 |
if (kit.stopped()) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
766 |
// Inlined method threw an exception, so it's just the slow path after all. |
7fc02fbe5c7a
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changeset
|
767 |
kit.set_jvms(slow_jvms); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
768 |
return kit.transfer_exceptions_into_jvms(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
769 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
770 |
|
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
771 |
// Finish the diamond. |
7fc02fbe5c7a
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twisti
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diff
changeset
|
772 |
kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
773 |
RegionNode* region = new (kit.C, 3) RegionNode(3); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
774 |
region->init_req(1, kit.control()); |
7fc02fbe5c7a
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diff
changeset
|
775 |
region->init_req(2, slow_map->control()); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
776 |
kit.set_control(gvn.transform(region)); |
7fc02fbe5c7a
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twisti
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diff
changeset
|
777 |
Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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changeset
|
778 |
iophi->set_req(2, slow_map->i_o()); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
779 |
kit.set_i_o(gvn.transform(iophi)); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
780 |
kit.merge_memory(slow_map->merged_memory(), region, 2); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
781 |
uint tos = kit.jvms()->stkoff() + kit.sp(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
782 |
uint limit = slow_map->req(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
783 |
for (uint i = TypeFunc::Parms; i < limit; i++) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
784 |
// Skip unused stack slots; fast forward to monoff(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
785 |
if (i == tos) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
786 |
i = kit.jvms()->monoff(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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4566
diff
changeset
|
787 |
if( i >= limit ) break; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
788 |
} |
7fc02fbe5c7a
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diff
changeset
|
789 |
Node* m = kit.map()->in(i); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
790 |
Node* n = slow_map->in(i); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
791 |
if (m != n) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
792 |
const Type* t = gvn.type(m)->meet(gvn.type(n)); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
793 |
Node* phi = PhiNode::make(region, m, t); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
794 |
phi->set_req(2, n); |
7fc02fbe5c7a
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diff
changeset
|
795 |
kit.map()->set_req(i, gvn.transform(phi)); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
796 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
797 |
} |
7fc02fbe5c7a
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diff
changeset
|
798 |
return kit.transfer_exceptions_into_jvms(); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
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diff
changeset
|
799 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
800 |
|
7fc02fbe5c7a
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changeset
|
801 |
|
1 | 802 |
//-------------------------UncommonTrapCallGenerator----------------------------- |
803 |
// Internal class which handles all out-of-line calls checking receiver type. |
|
804 |
class UncommonTrapCallGenerator : public CallGenerator { |
|
805 |
Deoptimization::DeoptReason _reason; |
|
806 |
Deoptimization::DeoptAction _action; |
|
807 |
||
808 |
public: |
|
809 |
UncommonTrapCallGenerator(ciMethod* m, |
|
810 |
Deoptimization::DeoptReason reason, |
|
811 |
Deoptimization::DeoptAction action) |
|
812 |
: CallGenerator(m) |
|
813 |
{ |
|
814 |
_reason = reason; |
|
815 |
_action = action; |
|
816 |
} |
|
817 |
||
818 |
virtual bool is_virtual() const { ShouldNotReachHere(); return false; } |
|
819 |
virtual bool is_trap() const { return true; } |
|
820 |
||
821 |
virtual JVMState* generate(JVMState* jvms); |
|
822 |
}; |
|
823 |
||
824 |
||
825 |
CallGenerator* |
|
826 |
CallGenerator::for_uncommon_trap(ciMethod* m, |
|
827 |
Deoptimization::DeoptReason reason, |
|
828 |
Deoptimization::DeoptAction action) { |
|
829 |
return new UncommonTrapCallGenerator(m, reason, action); |
|
830 |
} |
|
831 |
||
832 |
||
833 |
JVMState* UncommonTrapCallGenerator::generate(JVMState* jvms) { |
|
834 |
GraphKit kit(jvms); |
|
835 |
// Take the trap with arguments pushed on the stack. (Cf. null_check_receiver). |
|
836 |
int nargs = method()->arg_size(); |
|
837 |
kit.inc_sp(nargs); |
|
838 |
assert(nargs <= kit.sp() && kit.sp() <= jvms->stk_size(), "sane sp w/ args pushed"); |
|
839 |
if (_reason == Deoptimization::Reason_class_check && |
|
840 |
_action == Deoptimization::Action_maybe_recompile) { |
|
841 |
// Temp fix for 6529811 |
|
842 |
// Don't allow uncommon_trap to override our decision to recompile in the event |
|
843 |
// of a class cast failure for a monomorphic call as it will never let us convert |
|
844 |
// the call to either bi-morphic or megamorphic and can lead to unc-trap loops |
|
845 |
bool keep_exact_action = true; |
|
846 |
kit.uncommon_trap(_reason, _action, NULL, "monomorphic vcall checkcast", false, keep_exact_action); |
|
847 |
} else { |
|
848 |
kit.uncommon_trap(_reason, _action); |
|
849 |
} |
|
850 |
return kit.transfer_exceptions_into_jvms(); |
|
851 |
} |
|
852 |
||
853 |
// (Note: Moved hook_up_call to GraphKit::set_edges_for_java_call.) |
|
854 |
||
855 |
// (Node: Merged hook_up_exits into ParseGenerator::generate.) |
|
856 |
||
857 |
#define NODES_OVERHEAD_PER_METHOD (30.0) |
|
858 |
#define NODES_PER_BYTECODE (9.5) |
|
859 |
||
860 |
void WarmCallInfo::init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor) { |
|
861 |
int call_count = profile.count(); |
|
862 |
int code_size = call_method->code_size(); |
|
863 |
||
864 |
// Expected execution count is based on the historical count: |
|
865 |
_count = call_count < 0 ? 1 : call_site->method()->scale_count(call_count, prof_factor); |
|
866 |
||
867 |
// Expected profit from inlining, in units of simple call-overheads. |
|
868 |
_profit = 1.0; |
|
869 |
||
870 |
// Expected work performed by the call in units of call-overheads. |
|
871 |
// %%% need an empirical curve fit for "work" (time in call) |
|
872 |
float bytecodes_per_call = 3; |
|
873 |
_work = 1.0 + code_size / bytecodes_per_call; |
|
874 |
||
875 |
// Expected size of compilation graph: |
|
876 |
// -XX:+PrintParseStatistics once reported: |
|
877 |
// Methods seen: 9184 Methods parsed: 9184 Nodes created: 1582391 |
|
878 |
// Histogram of 144298 parsed bytecodes: |
|
879 |
// %%% Need an better predictor for graph size. |
|
880 |
_size = NODES_OVERHEAD_PER_METHOD + (NODES_PER_BYTECODE * code_size); |
|
881 |
} |
|
882 |
||
883 |
// is_cold: Return true if the node should never be inlined. |
|
884 |
// This is true if any of the key metrics are extreme. |
|
885 |
bool WarmCallInfo::is_cold() const { |
|
886 |
if (count() < WarmCallMinCount) return true; |
|
887 |
if (profit() < WarmCallMinProfit) return true; |
|
888 |
if (work() > WarmCallMaxWork) return true; |
|
889 |
if (size() > WarmCallMaxSize) return true; |
|
890 |
return false; |
|
891 |
} |
|
892 |
||
893 |
// is_hot: Return true if the node should be inlined immediately. |
|
894 |
// This is true if any of the key metrics are extreme. |
|
895 |
bool WarmCallInfo::is_hot() const { |
|
896 |
assert(!is_cold(), "eliminate is_cold cases before testing is_hot"); |
|
897 |
if (count() >= HotCallCountThreshold) return true; |
|
898 |
if (profit() >= HotCallProfitThreshold) return true; |
|
899 |
if (work() <= HotCallTrivialWork) return true; |
|
900 |
if (size() <= HotCallTrivialSize) return true; |
|
901 |
return false; |
|
902 |
} |
|
903 |
||
904 |
// compute_heat: |
|
905 |
float WarmCallInfo::compute_heat() const { |
|
906 |
assert(!is_cold(), "compute heat only on warm nodes"); |
|
907 |
assert(!is_hot(), "compute heat only on warm nodes"); |
|
908 |
int min_size = MAX2(0, (int)HotCallTrivialSize); |
|
909 |
int max_size = MIN2(500, (int)WarmCallMaxSize); |
|
910 |
float method_size = (size() - min_size) / MAX2(1, max_size - min_size); |
|
911 |
float size_factor; |
|
912 |
if (method_size < 0.05) size_factor = 4; // 2 sigmas better than avg. |
|
913 |
else if (method_size < 0.15) size_factor = 2; // 1 sigma better than avg. |
|
914 |
else if (method_size < 0.5) size_factor = 1; // better than avg. |
|
915 |
else size_factor = 0.5; // worse than avg. |
|
916 |
return (count() * profit() * size_factor); |
|
917 |
} |
|
918 |
||
919 |
bool WarmCallInfo::warmer_than(WarmCallInfo* that) { |
|
920 |
assert(this != that, "compare only different WCIs"); |
|
921 |
assert(this->heat() != 0 && that->heat() != 0, "call compute_heat 1st"); |
|
922 |
if (this->heat() > that->heat()) return true; |
|
923 |
if (this->heat() < that->heat()) return false; |
|
924 |
assert(this->heat() == that->heat(), "no NaN heat allowed"); |
|
925 |
// Equal heat. Break the tie some other way. |
|
926 |
if (!this->call() || !that->call()) return (address)this > (address)that; |
|
927 |
return this->call()->_idx > that->call()->_idx; |
|
928 |
} |
|
929 |
||
930 |
//#define UNINIT_NEXT ((WarmCallInfo*)badAddress) |
|
931 |
#define UNINIT_NEXT ((WarmCallInfo*)NULL) |
|
932 |
||
933 |
WarmCallInfo* WarmCallInfo::insert_into(WarmCallInfo* head) { |
|
934 |
assert(next() == UNINIT_NEXT, "not yet on any list"); |
|
935 |
WarmCallInfo* prev_p = NULL; |
|
936 |
WarmCallInfo* next_p = head; |
|
937 |
while (next_p != NULL && next_p->warmer_than(this)) { |
|
938 |
prev_p = next_p; |
|
939 |
next_p = prev_p->next(); |
|
940 |
} |
|
941 |
// Install this between prev_p and next_p. |
|
942 |
this->set_next(next_p); |
|
943 |
if (prev_p == NULL) |
|
944 |
head = this; |
|
945 |
else |
|
946 |
prev_p->set_next(this); |
|
947 |
return head; |
|
948 |
} |
|
949 |
||
950 |
WarmCallInfo* WarmCallInfo::remove_from(WarmCallInfo* head) { |
|
951 |
WarmCallInfo* prev_p = NULL; |
|
952 |
WarmCallInfo* next_p = head; |
|
953 |
while (next_p != this) { |
|
954 |
assert(next_p != NULL, "this must be in the list somewhere"); |
|
955 |
prev_p = next_p; |
|
956 |
next_p = prev_p->next(); |
|
957 |
} |
|
958 |
next_p = this->next(); |
|
959 |
debug_only(this->set_next(UNINIT_NEXT)); |
|
960 |
// Remove this from between prev_p and next_p. |
|
961 |
if (prev_p == NULL) |
|
962 |
head = next_p; |
|
963 |
else |
|
964 |
prev_p->set_next(next_p); |
|
965 |
return head; |
|
966 |
} |
|
967 |
||
968 |
WarmCallInfo* WarmCallInfo::_always_hot = NULL; |
|
969 |
WarmCallInfo* WarmCallInfo::_always_cold = NULL; |
|
970 |
||
971 |
WarmCallInfo* WarmCallInfo::always_hot() { |
|
972 |
if (_always_hot == NULL) { |
|
973 |
static double bits[sizeof(WarmCallInfo) / sizeof(double) + 1] = {0}; |
|
974 |
WarmCallInfo* ci = (WarmCallInfo*) bits; |
|
975 |
ci->_profit = ci->_count = MAX_VALUE(); |
|
976 |
ci->_work = ci->_size = MIN_VALUE(); |
|
977 |
_always_hot = ci; |
|
978 |
} |
|
979 |
assert(_always_hot->is_hot(), "must always be hot"); |
|
980 |
return _always_hot; |
|
981 |
} |
|
982 |
||
983 |
WarmCallInfo* WarmCallInfo::always_cold() { |
|
984 |
if (_always_cold == NULL) { |
|
985 |
static double bits[sizeof(WarmCallInfo) / sizeof(double) + 1] = {0}; |
|
986 |
WarmCallInfo* ci = (WarmCallInfo*) bits; |
|
987 |
ci->_profit = ci->_count = MIN_VALUE(); |
|
988 |
ci->_work = ci->_size = MAX_VALUE(); |
|
989 |
_always_cold = ci; |
|
990 |
} |
|
991 |
assert(_always_cold->is_cold(), "must always be cold"); |
|
992 |
return _always_cold; |
|
993 |
} |
|
994 |
||
995 |
||
996 |
#ifndef PRODUCT |
|
997 |
||
998 |
void WarmCallInfo::print() const { |
|
999 |
tty->print("%s : C=%6.1f P=%6.1f W=%6.1f S=%6.1f H=%6.1f -> %p", |
|
1000 |
is_cold() ? "cold" : is_hot() ? "hot " : "warm", |
|
1001 |
count(), profit(), work(), size(), compute_heat(), next()); |
|
1002 |
tty->cr(); |
|
1003 |
if (call() != NULL) call()->dump(); |
|
1004 |
} |
|
1005 |
||
1006 |
void print_wci(WarmCallInfo* ci) { |
|
1007 |
ci->print(); |
|
1008 |
} |
|
1009 |
||
1010 |
void WarmCallInfo::print_all() const { |
|
1011 |
for (const WarmCallInfo* p = this; p != NULL; p = p->next()) |
|
1012 |
p->print(); |
|
1013 |
} |
|
1014 |
||
1015 |
int WarmCallInfo::count_all() const { |
|
1016 |
int cnt = 0; |
|
1017 |
for (const WarmCallInfo* p = this; p != NULL; p = p->next()) |
|
1018 |
cnt++; |
|
1019 |
return cnt; |
|
1020 |
} |
|
1021 |
||
1022 |
#endif //PRODUCT |