Initial load

hotspot/src/share/vm/c1/c1_Compilation.hpp

@@ -0,0 +1,234 @@
+/*
+ * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class BlockBegin;
+class CompilationResourceObj;
+class XHandlers;
+class ExceptionInfo;
+class DebugInformationRecorder;
+class FrameMap;
+class IR;
+class IRScope;
+class Instruction;
+class LinearScan;
+class OopMap;
+class LIR_Emitter;
+class LIR_Assembler;
+class CodeEmitInfo;
+class ciEnv;
+class ciMethod;
+class ValueStack;
+class LIR_OprDesc;
+class C1_MacroAssembler;
+class CFGPrinter;
+typedef LIR_OprDesc* LIR_Opr;
+
+
+define_array(BasicTypeArray, BasicType)
+define_stack(BasicTypeList, BasicTypeArray)
+
+define_array(ExceptionInfoArray, ExceptionInfo*)
+define_stack(ExceptionInfoList,  ExceptionInfoArray)
+
+class Compilation: public StackObj {
+  friend class CompilationResourceObj;
+ private:
+
+  static Arena* _arena;
+  static Arena* arena() { return _arena; }
+
+  static Compilation* _compilation;
+
+ private:
+  // compilation specifics
+  AbstractCompiler*  _compiler;
+  ciEnv*             _env;
+  ciMethod*          _method;
+  int                _osr_bci;
+  IR*                _hir;
+  int                _max_spills;
+  FrameMap*          _frame_map;
+  C1_MacroAssembler* _masm;
+  bool               _needs_debug_information;
+  bool               _has_exception_handlers;
+  bool               _has_fpu_code;
+  bool               _has_unsafe_access;
+  const char*        _bailout_msg;
+  ExceptionInfoList* _exception_info_list;
+  ExceptionHandlerTable _exception_handler_table;
+  ImplicitExceptionTable _implicit_exception_table;
+  LinearScan*        _allocator;
+  CodeOffsets        _offsets;
+  CodeBuffer         _code;
+
+  // compilation helpers
+  void initialize();
+  void build_hir();
+  void emit_lir();
+
+  void emit_code_epilog(LIR_Assembler* assembler);
+  int  emit_code_body();
+
+  int  compile_java_method();
+  void install_code(int frame_size);
+  void compile_method();
+
+  void generate_exception_handler_table();
+
+  ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
+  ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
+
+  LinearScan* allocator()                          { return _allocator;      }
+  void        set_allocator(LinearScan* allocator) { _allocator = allocator; }
+
+  Instruction*       _current_instruction;       // the instruction currently being processed
+#ifndef PRODUCT
+  Instruction*       _last_instruction_printed;  // the last instruction printed during traversal
+#endif // PRODUCT
+
+ public:
+  // creation
+  Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, int osr_bci);
+  ~Compilation();
+
+  static Compilation* current_compilation()      { return _compilation; }
+
+  // accessors
+  ciEnv* env() const                             { return _env; }
+  AbstractCompiler* compiler() const             { return _compiler; }
+  bool needs_debug_information() const           { return _needs_debug_information; }
+  bool has_exception_handlers() const            { return _has_exception_handlers; }
+  bool has_fpu_code() const                      { return _has_fpu_code; }
+  bool has_unsafe_access() const                 { return _has_unsafe_access; }
+  ciMethod* method() const                       { return _method; }
+  int osr_bci() const                            { return _osr_bci; }
+  bool is_osr_compile() const                    { return osr_bci() >= 0; }
+  IR* hir() const                                { return _hir; }
+  int max_spills() const                         { return _max_spills; }
+  FrameMap* frame_map() const                    { return _frame_map; }
+  CodeBuffer* code()                             { return &_code; }
+  C1_MacroAssembler* masm() const                { return _masm; }
+  CodeOffsets* offsets()                         { return &_offsets; }
+
+  // setters
+  void set_needs_debug_information(bool f)       { _needs_debug_information = f; }
+  void set_has_exception_handlers(bool f)        { _has_exception_handlers = f; }
+  void set_has_fpu_code(bool f)                  { _has_fpu_code = f; }
+  void set_has_unsafe_access(bool f)             { _has_unsafe_access = f; }
+  // Add a set of exception handlers covering the given PC offset
+  void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
+  // Statistics gathering
+  void notice_inlined_method(ciMethod* method);
+
+  DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
+  Dependencies* dependency_recorder() const; // = _env->dependencies()
+  ImplicitExceptionTable* implicit_exception_table()     { return &_implicit_exception_table; }
+
+  Instruction* current_instruction() const       { return _current_instruction; }
+  Instruction* set_current_instruction(Instruction* instr) {
+    Instruction* previous = _current_instruction;
+    _current_instruction = instr;
+    return previous;
+  }
+
+#ifndef PRODUCT
+  void maybe_print_current_instruction();
+#endif // PRODUCT
+
+  // error handling
+  void bailout(const char* msg);
+  bool bailed_out() const                        { return _bailout_msg != NULL; }
+  const char* bailout_msg() const                { return _bailout_msg; }
+
+  // timers
+  static void print_timers();
+
+#ifndef PRODUCT
+  // debugging support.
+  // produces a file named c1compileonly in the current directory with
+  // directives to compile only the current method and it's inlines.
+  // The file can be passed to the command line option -XX:Flags=<filename>
+  void compile_only_this_method();
+  void compile_only_this_scope(outputStream* st, IRScope* scope);
+  void exclude_this_method();
+#endif // PRODUCT
+};
+
+
+// Macro definitions for unified bailout-support
+// The methods bailout() and bailed_out() are present in all classes
+// that might bailout, but forward all calls to Compilation
+#define BAILOUT(msg)               { bailout(msg); return;              }
+#define BAILOUT_(msg, res)         { bailout(msg); return res;          }
+
+#define CHECK_BAILOUT()            { if (bailed_out()) return;          }
+#define CHECK_BAILOUT_(res)        { if (bailed_out()) return res;      }
+
+
+class InstructionMark: public StackObj {
+ private:
+  Compilation* _compilation;
+  Instruction*  _previous;
+
+ public:
+  InstructionMark(Compilation* compilation, Instruction* instr) {
+    _compilation = compilation;
+    _previous = _compilation->set_current_instruction(instr);
+  }
+  ~InstructionMark() {
+    _compilation->set_current_instruction(_previous);
+  }
+};
+
+
+//----------------------------------------------------------------------
+// Base class for objects allocated by the compiler in the compilation arena
+class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC {
+ public:
+  void* operator new(size_t size) { return Compilation::arena()->Amalloc(size); }
+  void  operator delete(void* p) {} // nothing to do
+};
+
+
+//----------------------------------------------------------------------
+// Class for aggregating exception handler information.
+
+// Effectively extends XHandlers class with PC offset of
+// potentially exception-throwing instruction.
+// This class is used at the end of the compilation to build the
+// ExceptionHandlerTable.
+class ExceptionInfo: public CompilationResourceObj {
+ private:
+  int             _pco;                // PC of potentially exception-throwing instruction
+  XHandlers*      _exception_handlers; // flat list of exception handlers covering this PC
+
+ public:
+  ExceptionInfo(int pco, XHandlers* exception_handlers)
+    : _pco(pco)
+    , _exception_handlers(exception_handlers)
+  { }
+
+  int pco()                                      { return _pco; }
+  XHandlers* exception_handlers()                { return _exception_handlers; }
+};