346 lines
12 KiB
C++
346 lines
12 KiB
C++
/*
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* Copyright (c) 1999, 2013, 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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#ifndef SHARE_VM_C1_C1_COMPILATION_HPP
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#define SHARE_VM_C1_C1_COMPILATION_HPP
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#include "ci/ciEnv.hpp"
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#include "ci/ciMethodData.hpp"
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#include "code/exceptionHandlerTable.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/deoptimization.hpp"
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class CompilationResourceObj;
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class XHandlers;
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class ExceptionInfo;
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class DebugInformationRecorder;
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class FrameMap;
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class IR;
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class IRScope;
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class Instruction;
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class LinearScan;
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class OopMap;
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class LIR_Emitter;
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class LIR_Assembler;
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class CodeEmitInfo;
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class ciEnv;
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class ciMethod;
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class ValueStack;
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class LIR_OprDesc;
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class C1_MacroAssembler;
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class CFGPrinter;
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typedef LIR_OprDesc* LIR_Opr;
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define_array(BasicTypeArray, BasicType)
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define_stack(BasicTypeList, BasicTypeArray)
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define_array(ExceptionInfoArray, ExceptionInfo*)
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define_stack(ExceptionInfoList, ExceptionInfoArray)
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class Compilation: public StackObj {
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friend class CompilationResourceObj;
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private:
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// compilation specifics
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Arena* _arena;
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int _next_id;
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int _next_block_id;
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AbstractCompiler* _compiler;
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ciEnv* _env;
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CompileLog* _log;
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ciMethod* _method;
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int _osr_bci;
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IR* _hir;
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int _max_spills;
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FrameMap* _frame_map;
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C1_MacroAssembler* _masm;
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bool _has_exception_handlers;
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bool _has_fpu_code;
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bool _has_unsafe_access;
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bool _would_profile;
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bool _has_method_handle_invokes; // True if this method has MethodHandle invokes.
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const char* _bailout_msg;
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ExceptionInfoList* _exception_info_list;
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ExceptionHandlerTable _exception_handler_table;
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ImplicitExceptionTable _implicit_exception_table;
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LinearScan* _allocator;
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CodeOffsets _offsets;
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CodeBuffer _code;
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bool _has_access_indexed;
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int _interpreter_frame_size; // Stack space needed in case of a deoptimization
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// compilation helpers
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void initialize();
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void build_hir();
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void emit_lir();
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void emit_code_epilog(LIR_Assembler* assembler);
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int emit_code_body();
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int compile_java_method();
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void install_code(int frame_size);
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void compile_method();
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void generate_exception_handler_table();
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ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
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ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
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LinearScan* allocator() { return _allocator; }
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void set_allocator(LinearScan* allocator) { _allocator = allocator; }
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Instruction* _current_instruction; // the instruction currently being processed
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#ifndef PRODUCT
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Instruction* _last_instruction_printed; // the last instruction printed during traversal
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#endif // PRODUCT
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public:
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// creation
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Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
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int osr_bci, BufferBlob* buffer_blob);
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~Compilation();
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static Compilation* current() {
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return (Compilation*) ciEnv::current()->compiler_data();
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}
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// accessors
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ciEnv* env() const { return _env; }
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CompileLog* log() const { return _log; }
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AbstractCompiler* compiler() const { return _compiler; }
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bool has_exception_handlers() const { return _has_exception_handlers; }
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bool has_fpu_code() const { return _has_fpu_code; }
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bool has_unsafe_access() const { return _has_unsafe_access; }
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int max_vector_size() const { return 0; }
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ciMethod* method() const { return _method; }
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int osr_bci() const { return _osr_bci; }
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bool is_osr_compile() const { return osr_bci() >= 0; }
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IR* hir() const { return _hir; }
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int max_spills() const { return _max_spills; }
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FrameMap* frame_map() const { return _frame_map; }
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CodeBuffer* code() { return &_code; }
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C1_MacroAssembler* masm() const { return _masm; }
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CodeOffsets* offsets() { return &_offsets; }
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Arena* arena() { return _arena; }
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bool has_access_indexed() { return _has_access_indexed; }
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// Instruction ids
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int get_next_id() { return _next_id++; }
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int number_of_instructions() const { return _next_id; }
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// BlockBegin ids
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int get_next_block_id() { return _next_block_id++; }
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int number_of_blocks() const { return _next_block_id; }
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// setters
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void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
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void set_has_fpu_code(bool f) { _has_fpu_code = f; }
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void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
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void set_would_profile(bool f) { _would_profile = f; }
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void set_has_access_indexed(bool f) { _has_access_indexed = f; }
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// Add a set of exception handlers covering the given PC offset
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void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
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// Statistics gathering
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void notice_inlined_method(ciMethod* method);
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// JSR 292
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bool has_method_handle_invokes() const { return _has_method_handle_invokes; }
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void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; }
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DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
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Dependencies* dependency_recorder() const; // = _env->dependencies()
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ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
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Instruction* current_instruction() const { return _current_instruction; }
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Instruction* set_current_instruction(Instruction* instr) {
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Instruction* previous = _current_instruction;
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_current_instruction = instr;
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return previous;
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}
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#ifndef PRODUCT
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void maybe_print_current_instruction();
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#endif // PRODUCT
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// error handling
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void bailout(const char* msg);
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bool bailed_out() const { return _bailout_msg != NULL; }
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const char* bailout_msg() const { return _bailout_msg; }
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static int desired_max_code_buffer_size() {
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#ifndef PPC
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return (int) NMethodSizeLimit; // default 256K or 512K
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#else
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// conditional branches on PPC are restricted to 16 bit signed
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return MIN2((unsigned int)NMethodSizeLimit,32*K);
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#endif
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}
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static int desired_max_constant_size() {
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return desired_max_code_buffer_size() / 10;
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}
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static bool setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
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// timers
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static void print_timers();
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#ifndef PRODUCT
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// debugging support.
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// produces a file named c1compileonly in the current directory with
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// directives to compile only the current method and it's inlines.
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// The file can be passed to the command line option -XX:Flags=<filename>
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void compile_only_this_method();
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void compile_only_this_scope(outputStream* st, IRScope* scope);
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void exclude_this_method();
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#endif // PRODUCT
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bool is_profiling() {
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return env()->comp_level() == CompLevel_full_profile ||
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env()->comp_level() == CompLevel_limited_profile;
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}
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bool count_invocations() { return is_profiling(); }
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bool count_backedges() { return is_profiling(); }
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// Helpers for generation of profile information
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bool profile_branches() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && C1ProfileBranches;
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}
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bool profile_calls() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && C1ProfileCalls;
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}
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bool profile_inlined_calls() {
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return profile_calls() && C1ProfileInlinedCalls;
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}
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bool profile_checkcasts() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && C1ProfileCheckcasts;
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}
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bool profile_parameters() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && MethodData::profile_parameters();
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}
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bool profile_arguments() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && MethodData::profile_arguments();
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}
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bool profile_return() {
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return env()->comp_level() == CompLevel_full_profile &&
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C1UpdateMethodData && MethodData::profile_return();
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}
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bool age_code() const {
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return _method->profile_aging();
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}
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// will compilation make optimistic assumptions that might lead to
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// deoptimization and that the runtime will account for?
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bool is_optimistic() const {
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return !TieredCompilation &&
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(RangeCheckElimination || UseLoopInvariantCodeMotion) &&
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method()->method_data()->trap_count(Deoptimization::Reason_none) == 0;
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}
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ciKlass* cha_exact_type(ciType* type);
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// Dump inlining replay data to the stream.
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void dump_inline_data(outputStream* out) { /* do nothing now */ }
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// How much stack space would the interpreter need in case of a
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// deoptimization (worst case)
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void update_interpreter_frame_size(int size) {
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if (_interpreter_frame_size < size) {
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_interpreter_frame_size = size;
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}
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}
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int interpreter_frame_size() const {
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return _interpreter_frame_size;
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}
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};
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// Macro definitions for unified bailout-support
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// The methods bailout() and bailed_out() are present in all classes
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// that might bailout, but forward all calls to Compilation
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#define BAILOUT(msg) { bailout(msg); return; }
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#define BAILOUT_(msg, res) { bailout(msg); return res; }
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#define CHECK_BAILOUT() { if (bailed_out()) return; }
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#define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
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class InstructionMark: public StackObj {
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private:
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Compilation* _compilation;
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Instruction* _previous;
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public:
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InstructionMark(Compilation* compilation, Instruction* instr) {
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_compilation = compilation;
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_previous = _compilation->set_current_instruction(instr);
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}
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~InstructionMark() {
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_compilation->set_current_instruction(_previous);
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}
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};
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//----------------------------------------------------------------------
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// Base class for objects allocated by the compiler in the compilation arena
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class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC {
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public:
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void* operator new(size_t size) throw() { return Compilation::current()->arena()->Amalloc(size); }
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void* operator new(size_t size, Arena* arena) throw() {
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return arena->Amalloc(size);
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}
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void operator delete(void* p) {} // nothing to do
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};
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//----------------------------------------------------------------------
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// Class for aggregating exception handler information.
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// Effectively extends XHandlers class with PC offset of
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// potentially exception-throwing instruction.
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// This class is used at the end of the compilation to build the
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// ExceptionHandlerTable.
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class ExceptionInfo: public CompilationResourceObj {
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private:
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int _pco; // PC of potentially exception-throwing instruction
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XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
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public:
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ExceptionInfo(int pco, XHandlers* exception_handlers)
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: _pco(pco)
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, _exception_handlers(exception_handlers)
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{ }
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int pco() { return _pco; }
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XHandlers* exception_handlers() { return _exception_handlers; }
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};
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#endif // SHARE_VM_C1_C1_COMPILATION_HPP
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