Tue, 29 Dec 2009 19:08:54 +0100
6986046: C1 valuestack cleanup
Summary: fixes an historical oddity in C1 with inlining where all of the expression stacks are kept in the topmost ValueStack instead of being in their respective ValueStacks.
Reviewed-by: never
Contributed-by: Christian Wimmer <cwimmer@uci.edu>
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class CompilationResourceObj; |
duke@435 | 26 | class XHandlers; |
duke@435 | 27 | class ExceptionInfo; |
duke@435 | 28 | class DebugInformationRecorder; |
duke@435 | 29 | class FrameMap; |
duke@435 | 30 | class IR; |
duke@435 | 31 | class IRScope; |
duke@435 | 32 | class Instruction; |
duke@435 | 33 | class LinearScan; |
duke@435 | 34 | class OopMap; |
duke@435 | 35 | class LIR_Emitter; |
duke@435 | 36 | class LIR_Assembler; |
duke@435 | 37 | class CodeEmitInfo; |
duke@435 | 38 | class ciEnv; |
duke@435 | 39 | class ciMethod; |
duke@435 | 40 | class ValueStack; |
duke@435 | 41 | class LIR_OprDesc; |
duke@435 | 42 | class C1_MacroAssembler; |
duke@435 | 43 | class CFGPrinter; |
duke@435 | 44 | typedef LIR_OprDesc* LIR_Opr; |
duke@435 | 45 | |
duke@435 | 46 | |
duke@435 | 47 | define_array(BasicTypeArray, BasicType) |
duke@435 | 48 | define_stack(BasicTypeList, BasicTypeArray) |
duke@435 | 49 | |
duke@435 | 50 | define_array(ExceptionInfoArray, ExceptionInfo*) |
duke@435 | 51 | define_stack(ExceptionInfoList, ExceptionInfoArray) |
duke@435 | 52 | |
duke@435 | 53 | class Compilation: public StackObj { |
duke@435 | 54 | friend class CompilationResourceObj; |
duke@435 | 55 | private: |
duke@435 | 56 | // compilation specifics |
iveresov@1939 | 57 | Arena* _arena; |
iveresov@1939 | 58 | int _next_id; |
iveresov@1939 | 59 | int _next_block_id; |
duke@435 | 60 | AbstractCompiler* _compiler; |
duke@435 | 61 | ciEnv* _env; |
duke@435 | 62 | ciMethod* _method; |
duke@435 | 63 | int _osr_bci; |
duke@435 | 64 | IR* _hir; |
duke@435 | 65 | int _max_spills; |
duke@435 | 66 | FrameMap* _frame_map; |
duke@435 | 67 | C1_MacroAssembler* _masm; |
duke@435 | 68 | bool _has_exception_handlers; |
duke@435 | 69 | bool _has_fpu_code; |
duke@435 | 70 | bool _has_unsafe_access; |
iveresov@2138 | 71 | bool _would_profile; |
twisti@2046 | 72 | bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. |
duke@435 | 73 | const char* _bailout_msg; |
duke@435 | 74 | ExceptionInfoList* _exception_info_list; |
duke@435 | 75 | ExceptionHandlerTable _exception_handler_table; |
duke@435 | 76 | ImplicitExceptionTable _implicit_exception_table; |
duke@435 | 77 | LinearScan* _allocator; |
duke@435 | 78 | CodeOffsets _offsets; |
duke@435 | 79 | CodeBuffer _code; |
duke@435 | 80 | |
duke@435 | 81 | // compilation helpers |
duke@435 | 82 | void initialize(); |
duke@435 | 83 | void build_hir(); |
duke@435 | 84 | void emit_lir(); |
duke@435 | 85 | |
duke@435 | 86 | void emit_code_epilog(LIR_Assembler* assembler); |
duke@435 | 87 | int emit_code_body(); |
duke@435 | 88 | |
duke@435 | 89 | int compile_java_method(); |
duke@435 | 90 | void install_code(int frame_size); |
duke@435 | 91 | void compile_method(); |
duke@435 | 92 | |
duke@435 | 93 | void generate_exception_handler_table(); |
duke@435 | 94 | |
duke@435 | 95 | ExceptionInfoList* exception_info_list() const { return _exception_info_list; } |
duke@435 | 96 | ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; } |
duke@435 | 97 | |
duke@435 | 98 | LinearScan* allocator() { return _allocator; } |
duke@435 | 99 | void set_allocator(LinearScan* allocator) { _allocator = allocator; } |
duke@435 | 100 | |
duke@435 | 101 | Instruction* _current_instruction; // the instruction currently being processed |
duke@435 | 102 | #ifndef PRODUCT |
duke@435 | 103 | Instruction* _last_instruction_printed; // the last instruction printed during traversal |
duke@435 | 104 | #endif // PRODUCT |
duke@435 | 105 | |
duke@435 | 106 | public: |
duke@435 | 107 | // creation |
iveresov@1939 | 108 | Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, |
iveresov@1939 | 109 | int osr_bci, BufferBlob* buffer_blob); |
duke@435 | 110 | ~Compilation(); |
duke@435 | 111 | |
iveresov@1939 | 112 | |
iveresov@1939 | 113 | static Compilation* current() { |
iveresov@1939 | 114 | return (Compilation*) ciEnv::current()->compiler_data(); |
iveresov@1939 | 115 | } |
duke@435 | 116 | |
duke@435 | 117 | // accessors |
duke@435 | 118 | ciEnv* env() const { return _env; } |
duke@435 | 119 | AbstractCompiler* compiler() const { return _compiler; } |
duke@435 | 120 | bool has_exception_handlers() const { return _has_exception_handlers; } |
duke@435 | 121 | bool has_fpu_code() const { return _has_fpu_code; } |
duke@435 | 122 | bool has_unsafe_access() const { return _has_unsafe_access; } |
duke@435 | 123 | ciMethod* method() const { return _method; } |
duke@435 | 124 | int osr_bci() const { return _osr_bci; } |
duke@435 | 125 | bool is_osr_compile() const { return osr_bci() >= 0; } |
duke@435 | 126 | IR* hir() const { return _hir; } |
duke@435 | 127 | int max_spills() const { return _max_spills; } |
duke@435 | 128 | FrameMap* frame_map() const { return _frame_map; } |
duke@435 | 129 | CodeBuffer* code() { return &_code; } |
duke@435 | 130 | C1_MacroAssembler* masm() const { return _masm; } |
duke@435 | 131 | CodeOffsets* offsets() { return &_offsets; } |
iveresov@1939 | 132 | Arena* arena() { return _arena; } |
iveresov@1939 | 133 | |
iveresov@1939 | 134 | // Instruction ids |
iveresov@1939 | 135 | int get_next_id() { return _next_id++; } |
iveresov@1939 | 136 | int number_of_instructions() const { return _next_id; } |
iveresov@1939 | 137 | |
iveresov@1939 | 138 | // BlockBegin ids |
iveresov@1939 | 139 | int get_next_block_id() { return _next_block_id++; } |
iveresov@1939 | 140 | int number_of_blocks() const { return _next_block_id; } |
duke@435 | 141 | |
duke@435 | 142 | // setters |
duke@435 | 143 | void set_has_exception_handlers(bool f) { _has_exception_handlers = f; } |
duke@435 | 144 | void set_has_fpu_code(bool f) { _has_fpu_code = f; } |
duke@435 | 145 | void set_has_unsafe_access(bool f) { _has_unsafe_access = f; } |
iveresov@2138 | 146 | void set_would_profile(bool f) { _would_profile = f; } |
duke@435 | 147 | // Add a set of exception handlers covering the given PC offset |
duke@435 | 148 | void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers); |
duke@435 | 149 | // Statistics gathering |
duke@435 | 150 | void notice_inlined_method(ciMethod* method); |
duke@435 | 151 | |
twisti@2046 | 152 | // JSR 292 |
twisti@2046 | 153 | bool has_method_handle_invokes() const { return _has_method_handle_invokes; } |
twisti@2046 | 154 | void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } |
twisti@2046 | 155 | |
duke@435 | 156 | DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info(); |
duke@435 | 157 | Dependencies* dependency_recorder() const; // = _env->dependencies() |
duke@435 | 158 | ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; } |
duke@435 | 159 | |
duke@435 | 160 | Instruction* current_instruction() const { return _current_instruction; } |
duke@435 | 161 | Instruction* set_current_instruction(Instruction* instr) { |
duke@435 | 162 | Instruction* previous = _current_instruction; |
duke@435 | 163 | _current_instruction = instr; |
duke@435 | 164 | return previous; |
duke@435 | 165 | } |
duke@435 | 166 | |
duke@435 | 167 | #ifndef PRODUCT |
duke@435 | 168 | void maybe_print_current_instruction(); |
duke@435 | 169 | #endif // PRODUCT |
duke@435 | 170 | |
duke@435 | 171 | // error handling |
duke@435 | 172 | void bailout(const char* msg); |
duke@435 | 173 | bool bailed_out() const { return _bailout_msg != NULL; } |
duke@435 | 174 | const char* bailout_msg() const { return _bailout_msg; } |
duke@435 | 175 | |
iveresov@1939 | 176 | static int desired_max_code_buffer_size() { |
bobv@2036 | 177 | #ifndef PPC |
iveresov@1939 | 178 | return (int) NMethodSizeLimit; // default 256K or 512K |
bobv@2036 | 179 | #else |
bobv@2036 | 180 | // conditional branches on PPC are restricted to 16 bit signed |
bobv@2036 | 181 | return MAX2((unsigned int)NMethodSizeLimit,32*K); |
bobv@2036 | 182 | #endif |
iveresov@1939 | 183 | } |
iveresov@1939 | 184 | static int desired_max_constant_size() { |
bobv@2036 | 185 | #ifndef PPC |
iveresov@1939 | 186 | return (int) NMethodSizeLimit / 10; // about 25K |
bobv@2036 | 187 | #else |
bobv@2036 | 188 | return (MAX2((unsigned int)NMethodSizeLimit, 32*K)) / 10; |
bobv@2036 | 189 | #endif |
iveresov@1939 | 190 | } |
iveresov@1939 | 191 | |
iveresov@1939 | 192 | static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate); |
iveresov@1939 | 193 | |
duke@435 | 194 | // timers |
duke@435 | 195 | static void print_timers(); |
duke@435 | 196 | |
duke@435 | 197 | #ifndef PRODUCT |
duke@435 | 198 | // debugging support. |
duke@435 | 199 | // produces a file named c1compileonly in the current directory with |
duke@435 | 200 | // directives to compile only the current method and it's inlines. |
duke@435 | 201 | // The file can be passed to the command line option -XX:Flags=<filename> |
duke@435 | 202 | void compile_only_this_method(); |
duke@435 | 203 | void compile_only_this_scope(outputStream* st, IRScope* scope); |
duke@435 | 204 | void exclude_this_method(); |
duke@435 | 205 | #endif // PRODUCT |
iveresov@2138 | 206 | |
iveresov@2138 | 207 | bool is_profiling() { |
iveresov@2138 | 208 | return env()->comp_level() == CompLevel_full_profile || |
iveresov@2138 | 209 | env()->comp_level() == CompLevel_limited_profile; |
iveresov@2138 | 210 | } |
iveresov@2138 | 211 | bool count_invocations() { return is_profiling(); } |
iveresov@2138 | 212 | bool count_backedges() { return is_profiling(); } |
iveresov@2138 | 213 | |
iveresov@2138 | 214 | // Helpers for generation of profile information |
iveresov@2138 | 215 | bool profile_branches() { |
iveresov@2138 | 216 | return env()->comp_level() == CompLevel_full_profile && |
iveresov@2138 | 217 | C1UpdateMethodData && C1ProfileBranches; |
iveresov@2138 | 218 | } |
iveresov@2138 | 219 | bool profile_calls() { |
iveresov@2138 | 220 | return env()->comp_level() == CompLevel_full_profile && |
iveresov@2138 | 221 | C1UpdateMethodData && C1ProfileCalls; |
iveresov@2138 | 222 | } |
iveresov@2138 | 223 | bool profile_inlined_calls() { |
iveresov@2138 | 224 | return profile_calls() && C1ProfileInlinedCalls; |
iveresov@2138 | 225 | } |
iveresov@2138 | 226 | bool profile_checkcasts() { |
iveresov@2138 | 227 | return env()->comp_level() == CompLevel_full_profile && |
iveresov@2138 | 228 | C1UpdateMethodData && C1ProfileCheckcasts; |
iveresov@2138 | 229 | } |
duke@435 | 230 | }; |
duke@435 | 231 | |
duke@435 | 232 | |
duke@435 | 233 | // Macro definitions for unified bailout-support |
duke@435 | 234 | // The methods bailout() and bailed_out() are present in all classes |
duke@435 | 235 | // that might bailout, but forward all calls to Compilation |
duke@435 | 236 | #define BAILOUT(msg) { bailout(msg); return; } |
duke@435 | 237 | #define BAILOUT_(msg, res) { bailout(msg); return res; } |
duke@435 | 238 | |
duke@435 | 239 | #define CHECK_BAILOUT() { if (bailed_out()) return; } |
duke@435 | 240 | #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; } |
duke@435 | 241 | |
duke@435 | 242 | |
duke@435 | 243 | class InstructionMark: public StackObj { |
duke@435 | 244 | private: |
duke@435 | 245 | Compilation* _compilation; |
duke@435 | 246 | Instruction* _previous; |
duke@435 | 247 | |
duke@435 | 248 | public: |
duke@435 | 249 | InstructionMark(Compilation* compilation, Instruction* instr) { |
duke@435 | 250 | _compilation = compilation; |
duke@435 | 251 | _previous = _compilation->set_current_instruction(instr); |
duke@435 | 252 | } |
duke@435 | 253 | ~InstructionMark() { |
duke@435 | 254 | _compilation->set_current_instruction(_previous); |
duke@435 | 255 | } |
duke@435 | 256 | }; |
duke@435 | 257 | |
duke@435 | 258 | |
duke@435 | 259 | //---------------------------------------------------------------------- |
duke@435 | 260 | // Base class for objects allocated by the compiler in the compilation arena |
duke@435 | 261 | class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC { |
duke@435 | 262 | public: |
iveresov@1939 | 263 | void* operator new(size_t size) { return Compilation::current()->arena()->Amalloc(size); } |
iveresov@1939 | 264 | void* operator new(size_t size, Arena* arena) { |
iveresov@1939 | 265 | return arena->Amalloc(size); |
iveresov@1939 | 266 | } |
duke@435 | 267 | void operator delete(void* p) {} // nothing to do |
duke@435 | 268 | }; |
duke@435 | 269 | |
duke@435 | 270 | |
duke@435 | 271 | //---------------------------------------------------------------------- |
duke@435 | 272 | // Class for aggregating exception handler information. |
duke@435 | 273 | |
duke@435 | 274 | // Effectively extends XHandlers class with PC offset of |
duke@435 | 275 | // potentially exception-throwing instruction. |
duke@435 | 276 | // This class is used at the end of the compilation to build the |
duke@435 | 277 | // ExceptionHandlerTable. |
duke@435 | 278 | class ExceptionInfo: public CompilationResourceObj { |
duke@435 | 279 | private: |
duke@435 | 280 | int _pco; // PC of potentially exception-throwing instruction |
duke@435 | 281 | XHandlers* _exception_handlers; // flat list of exception handlers covering this PC |
duke@435 | 282 | |
duke@435 | 283 | public: |
duke@435 | 284 | ExceptionInfo(int pco, XHandlers* exception_handlers) |
duke@435 | 285 | : _pco(pco) |
duke@435 | 286 | , _exception_handlers(exception_handlers) |
duke@435 | 287 | { } |
duke@435 | 288 | |
duke@435 | 289 | int pco() { return _pco; } |
duke@435 | 290 | XHandlers* exception_handlers() { return _exception_handlers; } |
duke@435 | 291 | }; |