1 /* 2 * Copyright (c) 2005, 2019, 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 */ 24 25 #ifndef SHARE_OPTO_MACRO_HPP 26 #define SHARE_OPTO_MACRO_HPP 27 28 #include "opto/phase.hpp" 29 30 class AllocateNode; 31 class AllocateArrayNode; 32 class CallNode; 33 class SubTypeCheckNode; 34 class Node; 35 class PhaseIterGVN; 36 37 class PhaseMacroExpand : public Phase { 38 private: 39 PhaseIterGVN &_igvn; 40 41 public: 42 // Helper methods roughly modeled after GraphKit: 43 Node* basic_plus_adr(Node* base, int offset) { 44 return (offset == 0)? base: basic_plus_adr(base, MakeConX(offset)); 45 } 46 Node* basic_plus_adr(Node* base, Node* ptr, int offset) { 47 return (offset == 0)? ptr: basic_plus_adr(base, ptr, MakeConX(offset)); 48 } 49 Node* basic_plus_adr(Node* base, Node* offset) { 50 return basic_plus_adr(base, base, offset); 51 } 52 Node* basic_plus_adr(Node* base, Node* ptr, Node* offset) { 53 Node* adr = new AddPNode(base, ptr, offset); 54 return transform_later(adr); 55 } 56 Node* transform_later(Node* n) { 57 // equivalent to _gvn.transform in GraphKit, Ideal, etc. 58 _igvn.register_new_node_with_optimizer(n); 59 return n; 60 } 61 void set_eden_pointers(Node* &eden_top_adr, Node* &eden_end_adr); 62 Node* make_load( Node* ctl, Node* mem, Node* base, int offset, 63 const Type* value_type, BasicType bt); 64 Node* make_store(Node* ctl, Node* mem, Node* base, int offset, 65 Node* value, BasicType bt); 66 67 Node* make_leaf_call(Node* ctrl, Node* mem, 68 const TypeFunc* call_type, address call_addr, 69 const char* call_name, 70 const TypePtr* adr_type, 71 Node* parm0 = NULL, Node* parm1 = NULL, 72 Node* parm2 = NULL, Node* parm3 = NULL, 73 Node* parm4 = NULL, Node* parm5 = NULL, 74 Node* parm6 = NULL, Node* parm7 = NULL); 75 76 address basictype2arraycopy(BasicType t, 77 Node* src_offset, 78 Node* dest_offset, 79 bool disjoint_bases, 80 const char* &name, 81 bool dest_uninitialized); 82 83 private: 84 // projections extracted from a call node 85 ProjNode *_fallthroughproj; 86 ProjNode *_fallthroughcatchproj; 87 ProjNode *_ioproj_fallthrough; 88 ProjNode *_ioproj_catchall; 89 ProjNode *_catchallcatchproj; 90 ProjNode *_memproj_fallthrough; 91 ProjNode *_memproj_catchall; 92 ProjNode *_resproj; 93 94 // Additional data collected during macro expansion 95 bool _has_locks; 96 97 void expand_allocate(AllocateNode *alloc); 98 void expand_allocate_array(AllocateArrayNode *alloc); 99 void expand_allocate_common(AllocateNode* alloc, 100 Node* length, 101 const TypeFunc* slow_call_type, 102 address slow_call_address); 103 void yank_initalize_node(InitializeNode* node); 104 void yank_alloc_node(AllocateNode* alloc); 105 Node *value_from_mem(Node *mem, Node *ctl, BasicType ft, const Type *ftype, const TypeOopPtr *adr_t, AllocateNode *alloc); 106 Node *value_from_mem_phi(Node *mem, BasicType ft, const Type *ftype, const TypeOopPtr *adr_t, AllocateNode *alloc, Node_Stack *value_phis, int level); 107 108 bool eliminate_boxing_node(CallStaticJavaNode *boxing); 109 bool eliminate_allocate_node(AllocateNode *alloc); 110 bool can_eliminate_allocation(AllocateNode *alloc, GrowableArray <SafePointNode *>& safepoints); 111 bool scalar_replacement(AllocateNode *alloc, GrowableArray <SafePointNode *>& safepoints_done); 112 void process_users_of_allocation(CallNode *alloc); 113 114 void eliminate_gc_barrier(Node *p2x); 115 void mark_eliminated_box(Node* box, Node* obj); 116 void mark_eliminated_locking_nodes(AbstractLockNode *alock); 117 bool eliminate_locking_node(AbstractLockNode *alock); 118 void expand_lock_node(LockNode *lock); 119 void expand_unlock_node(UnlockNode *unlock); 120 121 // More helper methods modeled after GraphKit for array copy 122 void insert_mem_bar(Node** ctrl, Node** mem, int opcode, Node* precedent = NULL); 123 Node* array_element_address(Node* ary, Node* idx, BasicType elembt); 124 Node* ConvI2L(Node* offset); 125 126 // helper methods modeled after LibraryCallKit for array copy 127 Node* generate_guard(Node** ctrl, Node* test, RegionNode* region, float true_prob); 128 Node* generate_slow_guard(Node** ctrl, Node* test, RegionNode* region); 129 void generate_negative_guard(Node** ctrl, Node* index, RegionNode* region); 130 void generate_limit_guard(Node** ctrl, Node* offset, Node* subseq_length, Node* array_length, RegionNode* region); 131 132 // More helper methods for array copy 133 Node* generate_nonpositive_guard(Node** ctrl, Node* index, bool never_negative); 134 void finish_arraycopy_call(Node* call, Node** ctrl, MergeMemNode** mem, const TypePtr* adr_type); 135 Node* generate_arraycopy(ArrayCopyNode *ac, 136 AllocateArrayNode* alloc, 137 Node** ctrl, MergeMemNode* mem, Node** io, 138 const TypePtr* adr_type, 139 BasicType basic_elem_type, 140 Node* src, Node* src_offset, 141 Node* dest, Node* dest_offset, 142 Node* copy_length, 143 bool disjoint_bases = false, 144 bool length_never_negative = false, 145 RegionNode* slow_region = NULL); 146 void generate_clear_array(Node* ctrl, MergeMemNode* merge_mem, 147 const TypePtr* adr_type, 148 Node* dest, 149 BasicType basic_elem_type, 150 Node* slice_idx, 151 Node* slice_len, 152 Node* dest_size); 153 bool generate_block_arraycopy(Node** ctrl, MergeMemNode** mem, Node* io, 154 const TypePtr* adr_type, 155 BasicType basic_elem_type, 156 AllocateNode* alloc, 157 Node* src, Node* src_offset, 158 Node* dest, Node* dest_offset, 159 Node* dest_size, bool dest_uninitialized); 160 MergeMemNode* generate_slow_arraycopy(ArrayCopyNode *ac, 161 Node** ctrl, Node* mem, Node** io, 162 const TypePtr* adr_type, 163 Node* src, Node* src_offset, 164 Node* dest, Node* dest_offset, 165 Node* copy_length, bool dest_uninitialized); 166 Node* generate_checkcast_arraycopy(Node** ctrl, MergeMemNode** mem, 167 const TypePtr* adr_type, 168 Node* dest_elem_klass, 169 Node* src, Node* src_offset, 170 Node* dest, Node* dest_offset, 171 Node* copy_length, bool dest_uninitialized); 172 Node* generate_generic_arraycopy(Node** ctrl, MergeMemNode** mem, 173 const TypePtr* adr_type, 174 Node* src, Node* src_offset, 175 Node* dest, Node* dest_offset, 176 Node* copy_length, bool dest_uninitialized); 177 void generate_unchecked_arraycopy(Node** ctrl, MergeMemNode** mem, 178 const TypePtr* adr_type, 179 BasicType basic_elem_type, 180 bool disjoint_bases, 181 Node* src, Node* src_offset, 182 Node* dest, Node* dest_offset, 183 Node* copy_length, bool dest_uninitialized); 184 185 void expand_arraycopy_node(ArrayCopyNode *ac); 186 187 void expand_subtypecheck_node(SubTypeCheckNode *check); 188 189 int replace_input(Node *use, Node *oldref, Node *newref); 190 void migrate_outs(Node *old, Node *target); 191 void copy_call_debug_info(CallNode *oldcall, CallNode * newcall); 192 Node* opt_bits_test(Node* ctrl, Node* region, int edge, Node* word, int mask, int bits, bool return_fast_path = false); 193 void copy_predefined_input_for_runtime_call(Node * ctrl, CallNode* oldcall, CallNode* call); 194 CallNode* make_slow_call(CallNode *oldcall, const TypeFunc* slow_call_type, address slow_call, 195 const char* leaf_name, Node* slow_path, Node* parm0, Node* parm1, 196 Node* parm2); 197 void extract_call_projections(CallNode *call); 198 199 Node* initialize_object(AllocateNode* alloc, 200 Node* control, Node* rawmem, Node* object, 201 Node* klass_node, Node* length, 202 Node* size_in_bytes); 203 204 Node* make_arraycopy_load(ArrayCopyNode* ac, intptr_t offset, Node* ctl, Node* mem, BasicType ft, const Type *ftype, AllocateNode *alloc); 205 206 public: 207 PhaseMacroExpand(PhaseIterGVN &igvn) : Phase(Macro_Expand), _igvn(igvn), _has_locks(false) { 208 _igvn.set_delay_transform(true); 209 } 210 void eliminate_macro_nodes(); 211 bool expand_macro_nodes(); 212 213 PhaseIterGVN &igvn() const { return _igvn; } 214 215 // Members accessed from BarrierSetC2 216 void replace_node(Node* source, Node* target) { _igvn.replace_node(source, target); } 217 Node* intcon(jint con) const { return _igvn.intcon(con); } 218 Node* longcon(jlong con) const { return _igvn.longcon(con); } 219 Node* makecon(const Type *t) const { return _igvn.makecon(t); } 220 Node* top() const { return C->top(); } 221 222 Node* prefetch_allocation(Node* i_o, 223 Node*& needgc_false, Node*& contended_phi_rawmem, 224 Node* old_eden_top, Node* new_eden_top, 225 intx lines); 226 void expand_dtrace_alloc_probe(AllocateNode* alloc, Node* fast_oop, Node*&fast_oop_ctrl, Node*&fast_oop_rawmem); 227 void expand_initialize_membar(AllocateNode* alloc, InitializeNode* init, Node*&fast_oop_ctrl, Node*&fast_oop_rawmem); 228 }; 229 230 #endif // SHARE_OPTO_MACRO_HPP