src/share/vm/c1/c1_Runtime1.hpp

Thu, 21 Mar 2013 09:27:54 +0100

author
roland
date
Thu, 21 Mar 2013 09:27:54 +0100
changeset 4860
46f6f063b272
parent 4037
da91efe96a93
child 5628
f98f5d48f511
permissions
-rw-r--r--

7153771: array bound check elimination for c1
Summary: when possible optimize out array bound checks, inserting predicates when needed.
Reviewed-by: never, kvn, twisti
Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>

     1 /*
     2  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     5  * This code is free software; you can redistribute it and/or modify it
     6  * under the terms of the GNU General Public License version 2 only, as
     7  * published by the Free Software Foundation.
     8  *
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    12  * version 2 for more details (a copy is included in the LICENSE file that
    13  * accompanied this code).
    14  *
    15  * You should have received a copy of the GNU General Public License version
    16  * 2 along with this work; if not, write to the Free Software Foundation,
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    18  *
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    20  * or visit www.oracle.com if you need additional information or have any
    21  * questions.
    22  *
    23  */
    25 #ifndef SHARE_VM_C1_C1_RUNTIME1_HPP
    26 #define SHARE_VM_C1_C1_RUNTIME1_HPP
    28 #include "c1/c1_FrameMap.hpp"
    29 #include "code/stubs.hpp"
    30 #include "interpreter/interpreter.hpp"
    31 #include "memory/allocation.hpp"
    32 #include "runtime/deoptimization.hpp"
    34 class StubAssembler;
    36 // The Runtime1 holds all assembly stubs and VM
    37 // runtime routines needed by code code generated
    38 // by the Compiler1.
    40 #define RUNTIME1_STUBS(stub, last_entry) \
    41   stub(dtrace_object_alloc)          \
    42   stub(unwind_exception)             \
    43   stub(forward_exception)            \
    44   stub(throw_range_check_failed)       /* throws ArrayIndexOutOfBoundsException */ \
    45   stub(throw_index_exception)          /* throws IndexOutOfBoundsException */ \
    46   stub(throw_div0_exception)         \
    47   stub(throw_null_pointer_exception) \
    48   stub(register_finalizer)           \
    49   stub(new_instance)                 \
    50   stub(fast_new_instance)            \
    51   stub(fast_new_instance_init_check) \
    52   stub(new_type_array)               \
    53   stub(new_object_array)             \
    54   stub(new_multi_array)              \
    55   stub(handle_exception_nofpu)         /* optimized version that does not preserve fpu registers */ \
    56   stub(handle_exception)             \
    57   stub(handle_exception_from_callee) \
    58   stub(throw_array_store_exception)  \
    59   stub(throw_class_cast_exception)   \
    60   stub(throw_incompatible_class_change_error)   \
    61   stub(slow_subtype_check)           \
    62   stub(monitorenter)                 \
    63   stub(monitorenter_nofpu)             /* optimized version that does not preserve fpu registers */ \
    64   stub(monitorexit)                  \
    65   stub(monitorexit_nofpu)              /* optimized version that does not preserve fpu registers */ \
    66   stub(deoptimize)                   \
    67   stub(access_field_patching)        \
    68   stub(load_klass_patching)          \
    69   stub(load_mirror_patching)         \
    70   stub(g1_pre_barrier_slow)          \
    71   stub(g1_post_barrier_slow)         \
    72   stub(fpu2long_stub)                \
    73   stub(counter_overflow)             \
    74   stub(predicate_failed_trap)        \
    75   last_entry(number_of_ids)
    77 #define DECLARE_STUB_ID(x)       x ## _id ,
    78 #define DECLARE_LAST_STUB_ID(x)  x
    79 #define STUB_NAME(x)             #x " Runtime1 stub",
    80 #define LAST_STUB_NAME(x)        #x " Runtime1 stub"
    82 class Runtime1: public AllStatic {
    83   friend class VMStructs;
    84   friend class ArrayCopyStub;
    86  public:
    87   enum StubID {
    88     RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID)
    89   };
    91   // statistics
    92 #ifndef PRODUCT
    93   static int _resolve_invoke_cnt;
    94   static int _handle_wrong_method_cnt;
    95   static int _ic_miss_cnt;
    96   static int _generic_arraycopy_cnt;
    97   static int _primitive_arraycopy_cnt;
    98   static int _oop_arraycopy_cnt;
    99   static int _generic_arraycopystub_cnt;
   100   static int _arraycopy_slowcase_cnt;
   101   static int _arraycopy_checkcast_cnt;
   102   static int _arraycopy_checkcast_attempt_cnt;
   103   static int _new_type_array_slowcase_cnt;
   104   static int _new_object_array_slowcase_cnt;
   105   static int _new_instance_slowcase_cnt;
   106   static int _new_multi_array_slowcase_cnt;
   107   static int _monitorenter_slowcase_cnt;
   108   static int _monitorexit_slowcase_cnt;
   109   static int _patch_code_slowcase_cnt;
   110   static int _throw_range_check_exception_count;
   111   static int _throw_index_exception_count;
   112   static int _throw_div0_exception_count;
   113   static int _throw_null_pointer_exception_count;
   114   static int _throw_class_cast_exception_count;
   115   static int _throw_incompatible_class_change_error_count;
   116   static int _throw_array_store_exception_count;
   117   static int _throw_count;
   118 #endif
   120  private:
   121   static CodeBlob* _blobs[number_of_ids];
   122   static const char* _blob_names[];
   124   // stub generation
   125   static void       generate_blob_for(BufferBlob* blob, StubID id);
   126   static OopMapSet* generate_code_for(StubID id, StubAssembler* sasm);
   127   static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument);
   128   static OopMapSet* generate_handle_exception(StubID id, StubAssembler* sasm);
   129   static void       generate_unwind_exception(StubAssembler *sasm);
   130   static OopMapSet* generate_patching(StubAssembler* sasm, address target);
   132   static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry,
   133                                        Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg);
   135   // runtime entry points
   136   static void new_instance    (JavaThread* thread, Klass* klass);
   137   static void new_type_array  (JavaThread* thread, Klass* klass, jint length);
   138   static void new_object_array(JavaThread* thread, Klass* klass, jint length);
   139   static void new_multi_array (JavaThread* thread, Klass* klass, int rank, jint* dims);
   141   static address counter_overflow(JavaThread* thread, int bci, Method* method);
   143   static void unimplemented_entry   (JavaThread* thread, StubID id);
   145   static address exception_handler_for_pc(JavaThread* thread);
   147   static void throw_range_check_exception(JavaThread* thread, int index);
   148   static void throw_index_exception(JavaThread* thread, int index);
   149   static void throw_div0_exception(JavaThread* thread);
   150   static void throw_null_pointer_exception(JavaThread* thread);
   151   static void throw_class_cast_exception(JavaThread* thread, oopDesc* object);
   152   static void throw_incompatible_class_change_error(JavaThread* thread);
   153   static void throw_array_store_exception(JavaThread* thread, oopDesc* object);
   155   static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock);
   156   static void monitorexit (JavaThread* thread, BasicObjectLock* lock);
   158   static void deoptimize(JavaThread* thread);
   160   static int access_field_patching(JavaThread* thread);
   161   static int move_klass_patching(JavaThread* thread);
   162   static int move_mirror_patching(JavaThread* thread);
   164   static void patch_code(JavaThread* thread, StubID stub_id);
   166  public:
   167   // initialization
   168   static void initialize(BufferBlob* blob);
   169   static void initialize_pd();
   171   // stubs
   172   static CodeBlob* blob_for (StubID id);
   173   static address   entry_for(StubID id)          { return blob_for(id)->code_begin(); }
   174   static const char* name_for (StubID id);
   175   static const char* name_for_address(address entry);
   177   // platform might add runtime names.
   178   static const char* pd_name_for_address(address entry);
   180   // method tracing
   181   static void trace_block_entry(jint block_id);
   183 #ifndef PRODUCT
   184   static address throw_count_address()               { return (address)&_throw_count;             }
   185   static address arraycopy_count_address(BasicType type);
   186 #endif
   188   // directly accessible leaf routine
   189   static int  arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length);
   190   static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length);
   191   static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length);
   192   static int  is_instance_of(oopDesc* mirror, oopDesc* obj);
   194   static void predicate_failed_trap(JavaThread* thread);
   196   static void print_statistics()                 PRODUCT_RETURN;
   197 };
   199 #endif // SHARE_VM_C1_C1_RUNTIME1_HPP

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