Wed, 13 Apr 2011 14:33:03 -0700
6988308: assert((cnt > 0.0f) && (prob > 0.0f)) failed: Bad frequency assignment in if
Summary: Make sure cnt doesn't become negative and integer overflow doesn't happen.
Reviewed-by: kvn, twisti
duke@435 | 1 | /* |
trims@2708 | 2 | * Copyright (c) 2001, 2011, 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 | |
stefank@2314 | 25 | #ifndef SHARE_VM_OPTO_GRAPHKIT_HPP |
stefank@2314 | 26 | #define SHARE_VM_OPTO_GRAPHKIT_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "ci/ciEnv.hpp" |
stefank@2314 | 29 | #include "ci/ciMethodData.hpp" |
stefank@2314 | 30 | #include "opto/addnode.hpp" |
stefank@2314 | 31 | #include "opto/callnode.hpp" |
stefank@2314 | 32 | #include "opto/cfgnode.hpp" |
stefank@2314 | 33 | #include "opto/compile.hpp" |
stefank@2314 | 34 | #include "opto/divnode.hpp" |
stefank@2314 | 35 | #include "opto/mulnode.hpp" |
stefank@2314 | 36 | #include "opto/phaseX.hpp" |
stefank@2314 | 37 | #include "opto/subnode.hpp" |
stefank@2314 | 38 | #include "opto/type.hpp" |
stefank@2314 | 39 | #include "runtime/deoptimization.hpp" |
stefank@2314 | 40 | |
duke@435 | 41 | class FastLockNode; |
duke@435 | 42 | class FastUnlockNode; |
ysr@777 | 43 | class IdealKit; |
duke@435 | 44 | class Parse; |
duke@435 | 45 | class RootNode; |
duke@435 | 46 | |
duke@435 | 47 | //----------------------------------------------------------------------------- |
duke@435 | 48 | //----------------------------GraphKit----------------------------------------- |
duke@435 | 49 | // Toolkit for building the common sorts of subgraphs. |
duke@435 | 50 | // Does not know about bytecode parsing or type-flow results. |
duke@435 | 51 | // It is able to create graphs implementing the semantics of most |
duke@435 | 52 | // or all bytecodes, so that it can expand intrinsics and calls. |
duke@435 | 53 | // It may depend on JVMState structure, but it must not depend |
duke@435 | 54 | // on specific bytecode streams. |
duke@435 | 55 | class GraphKit : public Phase { |
duke@435 | 56 | friend class PreserveJVMState; |
duke@435 | 57 | |
duke@435 | 58 | protected: |
duke@435 | 59 | ciEnv* _env; // Compilation environment |
duke@435 | 60 | PhaseGVN &_gvn; // Some optimizations while parsing |
duke@435 | 61 | SafePointNode* _map; // Parser map from JVM to Nodes |
duke@435 | 62 | SafePointNode* _exceptions;// Parser map(s) for exception state(s) |
duke@435 | 63 | int _sp; // JVM Expression Stack Pointer |
duke@435 | 64 | int _bci; // JVM Bytecode Pointer |
duke@435 | 65 | ciMethod* _method; // JVM Current Method |
duke@435 | 66 | |
duke@435 | 67 | private: |
duke@435 | 68 | SafePointNode* map_not_null() const { |
duke@435 | 69 | assert(_map != NULL, "must call stopped() to test for reset compiler map"); |
duke@435 | 70 | return _map; |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | public: |
duke@435 | 74 | GraphKit(); // empty constructor |
duke@435 | 75 | GraphKit(JVMState* jvms); // the JVM state on which to operate |
duke@435 | 76 | |
duke@435 | 77 | #ifdef ASSERT |
duke@435 | 78 | ~GraphKit() { |
duke@435 | 79 | assert(!has_exceptions(), "user must call transfer_exceptions_into_jvms"); |
duke@435 | 80 | } |
duke@435 | 81 | #endif |
duke@435 | 82 | |
duke@435 | 83 | virtual Parse* is_Parse() const { return NULL; } |
duke@435 | 84 | |
duke@435 | 85 | ciEnv* env() const { return _env; } |
duke@435 | 86 | PhaseGVN& gvn() const { return _gvn; } |
duke@435 | 87 | |
duke@435 | 88 | void record_for_igvn(Node* n) const { C->record_for_igvn(n); } // delegate to Compile |
duke@435 | 89 | |
duke@435 | 90 | // Handy well-known nodes: |
duke@435 | 91 | Node* null() const { return zerocon(T_OBJECT); } |
duke@435 | 92 | Node* top() const { return C->top(); } |
duke@435 | 93 | RootNode* root() const { return C->root(); } |
duke@435 | 94 | |
duke@435 | 95 | // Create or find a constant node |
duke@435 | 96 | Node* intcon(jint con) const { return _gvn.intcon(con); } |
duke@435 | 97 | Node* longcon(jlong con) const { return _gvn.longcon(con); } |
duke@435 | 98 | Node* makecon(const Type *t) const { return _gvn.makecon(t); } |
duke@435 | 99 | Node* zerocon(BasicType bt) const { return _gvn.zerocon(bt); } |
duke@435 | 100 | // (See also macro MakeConX in type.hpp, which uses intcon or longcon.) |
duke@435 | 101 | |
never@998 | 102 | // Helper for byte_map_base |
never@998 | 103 | Node* byte_map_base_node() { |
never@998 | 104 | // Get base of card map |
never@998 | 105 | CardTableModRefBS* ct = (CardTableModRefBS*)(Universe::heap()->barrier_set()); |
never@998 | 106 | assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust users of this code"); |
never@998 | 107 | if (ct->byte_map_base != NULL) { |
never@998 | 108 | return makecon(TypeRawPtr::make((address)ct->byte_map_base)); |
never@998 | 109 | } else { |
never@998 | 110 | return null(); |
never@998 | 111 | } |
never@998 | 112 | } |
never@998 | 113 | |
duke@435 | 114 | jint find_int_con(Node* n, jint value_if_unknown) { |
duke@435 | 115 | return _gvn.find_int_con(n, value_if_unknown); |
duke@435 | 116 | } |
duke@435 | 117 | jlong find_long_con(Node* n, jlong value_if_unknown) { |
duke@435 | 118 | return _gvn.find_long_con(n, value_if_unknown); |
duke@435 | 119 | } |
duke@435 | 120 | // (See also macro find_intptr_t_con in type.hpp, which uses one of these.) |
duke@435 | 121 | |
duke@435 | 122 | // JVM State accessors: |
duke@435 | 123 | // Parser mapping from JVM indices into Nodes. |
duke@435 | 124 | // Low slots are accessed by the StartNode::enum. |
duke@435 | 125 | // Then come the locals at StartNode::Parms to StartNode::Parms+max_locals(); |
duke@435 | 126 | // Then come JVM stack slots. |
duke@435 | 127 | // Finally come the monitors, if any. |
duke@435 | 128 | // See layout accessors in class JVMState. |
duke@435 | 129 | |
duke@435 | 130 | SafePointNode* map() const { return _map; } |
duke@435 | 131 | bool has_exceptions() const { return _exceptions != NULL; } |
duke@435 | 132 | JVMState* jvms() const { return map_not_null()->_jvms; } |
duke@435 | 133 | int sp() const { return _sp; } |
duke@435 | 134 | int bci() const { return _bci; } |
duke@435 | 135 | Bytecodes::Code java_bc() const; |
duke@435 | 136 | ciMethod* method() const { return _method; } |
duke@435 | 137 | |
duke@435 | 138 | void set_jvms(JVMState* jvms) { set_map(jvms->map()); |
duke@435 | 139 | assert(jvms == this->jvms(), "sanity"); |
duke@435 | 140 | _sp = jvms->sp(); |
duke@435 | 141 | _bci = jvms->bci(); |
duke@435 | 142 | _method = jvms->has_method() ? jvms->method() : NULL; } |
duke@435 | 143 | void set_map(SafePointNode* m) { _map = m; debug_only(verify_map()); } |
duke@435 | 144 | void set_sp(int i) { assert(i >= 0, "must be non-negative"); _sp = i; } |
duke@435 | 145 | void clean_stack(int from_sp); // clear garbage beyond from_sp to top |
duke@435 | 146 | |
duke@435 | 147 | void inc_sp(int i) { set_sp(sp() + i); } |
duke@435 | 148 | void set_bci(int bci) { _bci = bci; } |
duke@435 | 149 | |
duke@435 | 150 | // Make sure jvms has current bci & sp. |
duke@435 | 151 | JVMState* sync_jvms() const; |
duke@435 | 152 | #ifdef ASSERT |
duke@435 | 153 | // Make sure JVMS has an updated copy of bci and sp. |
duke@435 | 154 | // Also sanity-check method, depth, and monitor depth. |
duke@435 | 155 | bool jvms_in_sync() const; |
duke@435 | 156 | |
duke@435 | 157 | // Make sure the map looks OK. |
duke@435 | 158 | void verify_map() const; |
duke@435 | 159 | |
duke@435 | 160 | // Make sure a proposed exception state looks OK. |
duke@435 | 161 | static void verify_exception_state(SafePointNode* ex_map); |
duke@435 | 162 | #endif |
duke@435 | 163 | |
duke@435 | 164 | // Clone the existing map state. (Implements PreserveJVMState.) |
duke@435 | 165 | SafePointNode* clone_map(); |
duke@435 | 166 | |
duke@435 | 167 | // Set the map to a clone of the given one. |
duke@435 | 168 | void set_map_clone(SafePointNode* m); |
duke@435 | 169 | |
duke@435 | 170 | // Tell if the compilation is failing. |
duke@435 | 171 | bool failing() const { return C->failing(); } |
duke@435 | 172 | |
duke@435 | 173 | // Set _map to NULL, signalling a stop to further bytecode execution. |
duke@435 | 174 | // Preserve the map intact for future use, and return it back to the caller. |
duke@435 | 175 | SafePointNode* stop() { SafePointNode* m = map(); set_map(NULL); return m; } |
duke@435 | 176 | |
duke@435 | 177 | // Stop, but first smash the map's inputs to NULL, to mark it dead. |
duke@435 | 178 | void stop_and_kill_map(); |
duke@435 | 179 | |
duke@435 | 180 | // Tell if _map is NULL, or control is top. |
duke@435 | 181 | bool stopped(); |
duke@435 | 182 | |
duke@435 | 183 | // Tell if this method or any caller method has exception handlers. |
duke@435 | 184 | bool has_ex_handler(); |
duke@435 | 185 | |
duke@435 | 186 | // Save an exception without blowing stack contents or other JVM state. |
duke@435 | 187 | // (The extra pointer is stuck with add_req on the map, beyond the JVMS.) |
duke@435 | 188 | static void set_saved_ex_oop(SafePointNode* ex_map, Node* ex_oop); |
duke@435 | 189 | |
duke@435 | 190 | // Recover a saved exception from its map. |
duke@435 | 191 | static Node* saved_ex_oop(SafePointNode* ex_map); |
duke@435 | 192 | |
duke@435 | 193 | // Recover a saved exception from its map, and remove it from the map. |
duke@435 | 194 | static Node* clear_saved_ex_oop(SafePointNode* ex_map); |
duke@435 | 195 | |
duke@435 | 196 | #ifdef ASSERT |
duke@435 | 197 | // Recover a saved exception from its map, and remove it from the map. |
duke@435 | 198 | static bool has_saved_ex_oop(SafePointNode* ex_map); |
duke@435 | 199 | #endif |
duke@435 | 200 | |
duke@435 | 201 | // Push an exception in the canonical position for handlers (stack(0)). |
duke@435 | 202 | void push_ex_oop(Node* ex_oop) { |
duke@435 | 203 | ensure_stack(1); // ensure room to push the exception |
duke@435 | 204 | set_stack(0, ex_oop); |
duke@435 | 205 | set_sp(1); |
duke@435 | 206 | clean_stack(1); |
duke@435 | 207 | } |
duke@435 | 208 | |
duke@435 | 209 | // Detach and return an exception state. |
duke@435 | 210 | SafePointNode* pop_exception_state() { |
duke@435 | 211 | SafePointNode* ex_map = _exceptions; |
duke@435 | 212 | if (ex_map != NULL) { |
duke@435 | 213 | _exceptions = ex_map->next_exception(); |
duke@435 | 214 | ex_map->set_next_exception(NULL); |
duke@435 | 215 | debug_only(verify_exception_state(ex_map)); |
duke@435 | 216 | } |
duke@435 | 217 | return ex_map; |
duke@435 | 218 | } |
duke@435 | 219 | |
duke@435 | 220 | // Add an exception, using the given JVM state, without commoning. |
duke@435 | 221 | void push_exception_state(SafePointNode* ex_map) { |
duke@435 | 222 | debug_only(verify_exception_state(ex_map)); |
duke@435 | 223 | ex_map->set_next_exception(_exceptions); |
duke@435 | 224 | _exceptions = ex_map; |
duke@435 | 225 | } |
duke@435 | 226 | |
duke@435 | 227 | // Turn the current JVM state into an exception state, appending the ex_oop. |
duke@435 | 228 | SafePointNode* make_exception_state(Node* ex_oop); |
duke@435 | 229 | |
duke@435 | 230 | // Add an exception, using the given JVM state. |
duke@435 | 231 | // Combine all exceptions with a common exception type into a single state. |
duke@435 | 232 | // (This is done via combine_exception_states.) |
duke@435 | 233 | void add_exception_state(SafePointNode* ex_map); |
duke@435 | 234 | |
duke@435 | 235 | // Combine all exceptions of any sort whatever into a single master state. |
duke@435 | 236 | SafePointNode* combine_and_pop_all_exception_states() { |
duke@435 | 237 | if (_exceptions == NULL) return NULL; |
duke@435 | 238 | SafePointNode* phi_map = pop_exception_state(); |
duke@435 | 239 | SafePointNode* ex_map; |
duke@435 | 240 | while ((ex_map = pop_exception_state()) != NULL) { |
duke@435 | 241 | combine_exception_states(ex_map, phi_map); |
duke@435 | 242 | } |
duke@435 | 243 | return phi_map; |
duke@435 | 244 | } |
duke@435 | 245 | |
duke@435 | 246 | // Combine the two exception states, building phis as necessary. |
duke@435 | 247 | // The second argument is updated to include contributions from the first. |
duke@435 | 248 | void combine_exception_states(SafePointNode* ex_map, SafePointNode* phi_map); |
duke@435 | 249 | |
duke@435 | 250 | // Reset the map to the given state. If there are any half-finished phis |
duke@435 | 251 | // in it (created by combine_exception_states), transform them now. |
duke@435 | 252 | // Returns the exception oop. (Caller must call push_ex_oop if required.) |
duke@435 | 253 | Node* use_exception_state(SafePointNode* ex_map); |
duke@435 | 254 | |
duke@435 | 255 | // Collect exceptions from a given JVM state into my exception list. |
duke@435 | 256 | void add_exception_states_from(JVMState* jvms); |
duke@435 | 257 | |
duke@435 | 258 | // Collect all raised exceptions into the current JVM state. |
duke@435 | 259 | // Clear the current exception list and map, returns the combined states. |
duke@435 | 260 | JVMState* transfer_exceptions_into_jvms(); |
duke@435 | 261 | |
duke@435 | 262 | // Helper to throw a built-in exception. |
duke@435 | 263 | // Range checks take the offending index. |
duke@435 | 264 | // Cast and array store checks take the offending class. |
duke@435 | 265 | // Others do not take the optional argument. |
duke@435 | 266 | // The JVMS must allow the bytecode to be re-executed |
duke@435 | 267 | // via an uncommon trap. |
duke@435 | 268 | void builtin_throw(Deoptimization::DeoptReason reason, Node* arg = NULL); |
duke@435 | 269 | |
dcubed@1648 | 270 | // Helper to check the JavaThread::_should_post_on_exceptions flag |
dcubed@1648 | 271 | // and branch to an uncommon_trap if it is true (with the specified reason and must_throw) |
dcubed@1648 | 272 | void uncommon_trap_if_should_post_on_exceptions(Deoptimization::DeoptReason reason, |
dcubed@1648 | 273 | bool must_throw) ; |
dcubed@1648 | 274 | |
duke@435 | 275 | // Helper Functions for adding debug information |
duke@435 | 276 | void kill_dead_locals(); |
duke@435 | 277 | #ifdef ASSERT |
duke@435 | 278 | bool dead_locals_are_killed(); |
duke@435 | 279 | #endif |
duke@435 | 280 | // The call may deoptimize. Supply required JVM state as debug info. |
duke@435 | 281 | // If must_throw is true, the call is guaranteed not to return normally. |
duke@435 | 282 | void add_safepoint_edges(SafePointNode* call, |
duke@435 | 283 | bool must_throw = false); |
duke@435 | 284 | |
duke@435 | 285 | // How many stack inputs does the current BC consume? |
duke@435 | 286 | // And, how does the stack change after the bytecode? |
duke@435 | 287 | // Returns false if unknown. |
duke@435 | 288 | bool compute_stack_effects(int& inputs, int& depth); |
duke@435 | 289 | |
duke@435 | 290 | // Add a fixed offset to a pointer |
duke@435 | 291 | Node* basic_plus_adr(Node* base, Node* ptr, intptr_t offset) { |
duke@435 | 292 | return basic_plus_adr(base, ptr, MakeConX(offset)); |
duke@435 | 293 | } |
duke@435 | 294 | Node* basic_plus_adr(Node* base, intptr_t offset) { |
duke@435 | 295 | return basic_plus_adr(base, base, MakeConX(offset)); |
duke@435 | 296 | } |
duke@435 | 297 | // Add a variable offset to a pointer |
duke@435 | 298 | Node* basic_plus_adr(Node* base, Node* offset) { |
duke@435 | 299 | return basic_plus_adr(base, base, offset); |
duke@435 | 300 | } |
duke@435 | 301 | Node* basic_plus_adr(Node* base, Node* ptr, Node* offset); |
duke@435 | 302 | |
never@1515 | 303 | |
never@1515 | 304 | // Some convenient shortcuts for common nodes |
never@1515 | 305 | Node* IfTrue(IfNode* iff) { return _gvn.transform(new (C,1) IfTrueNode(iff)); } |
never@1515 | 306 | Node* IfFalse(IfNode* iff) { return _gvn.transform(new (C,1) IfFalseNode(iff)); } |
never@1515 | 307 | |
never@1515 | 308 | Node* AddI(Node* l, Node* r) { return _gvn.transform(new (C,3) AddINode(l, r)); } |
never@1515 | 309 | Node* SubI(Node* l, Node* r) { return _gvn.transform(new (C,3) SubINode(l, r)); } |
never@1515 | 310 | Node* MulI(Node* l, Node* r) { return _gvn.transform(new (C,3) MulINode(l, r)); } |
never@1515 | 311 | Node* DivI(Node* ctl, Node* l, Node* r) { return _gvn.transform(new (C,3) DivINode(ctl, l, r)); } |
never@1515 | 312 | |
never@1515 | 313 | Node* AndI(Node* l, Node* r) { return _gvn.transform(new (C,3) AndINode(l, r)); } |
never@1515 | 314 | Node* OrI(Node* l, Node* r) { return _gvn.transform(new (C,3) OrINode(l, r)); } |
never@1515 | 315 | Node* XorI(Node* l, Node* r) { return _gvn.transform(new (C,3) XorINode(l, r)); } |
never@1515 | 316 | |
never@1515 | 317 | Node* MaxI(Node* l, Node* r) { return _gvn.transform(new (C,3) MaxINode(l, r)); } |
never@1515 | 318 | Node* MinI(Node* l, Node* r) { return _gvn.transform(new (C,3) MinINode(l, r)); } |
never@1515 | 319 | |
never@1515 | 320 | Node* LShiftI(Node* l, Node* r) { return _gvn.transform(new (C,3) LShiftINode(l, r)); } |
never@1515 | 321 | Node* RShiftI(Node* l, Node* r) { return _gvn.transform(new (C,3) RShiftINode(l, r)); } |
never@1515 | 322 | Node* URShiftI(Node* l, Node* r) { return _gvn.transform(new (C,3) URShiftINode(l, r)); } |
never@1515 | 323 | |
never@1515 | 324 | Node* CmpI(Node* l, Node* r) { return _gvn.transform(new (C,3) CmpINode(l, r)); } |
never@1515 | 325 | Node* CmpL(Node* l, Node* r) { return _gvn.transform(new (C,3) CmpLNode(l, r)); } |
never@1515 | 326 | Node* CmpP(Node* l, Node* r) { return _gvn.transform(new (C,3) CmpPNode(l, r)); } |
never@1515 | 327 | Node* Bool(Node* cmp, BoolTest::mask relop) { return _gvn.transform(new (C,2) BoolNode(cmp, relop)); } |
never@1515 | 328 | |
never@1515 | 329 | Node* AddP(Node* b, Node* a, Node* o) { return _gvn.transform(new (C,4) AddPNode(b, a, o)); } |
never@1515 | 330 | |
duke@435 | 331 | // Convert between int and long, and size_t. |
duke@435 | 332 | // (See macros ConvI2X, etc., in type.hpp for ConvI2X, etc.) |
duke@435 | 333 | Node* ConvI2L(Node* offset); |
duke@435 | 334 | Node* ConvL2I(Node* offset); |
duke@435 | 335 | // Find out the klass of an object. |
duke@435 | 336 | Node* load_object_klass(Node* object); |
duke@435 | 337 | // Find out the length of an array. |
duke@435 | 338 | Node* load_array_length(Node* array); |
duke@435 | 339 | // Helper function to do a NULL pointer check or ZERO check based on type. |
duke@435 | 340 | Node* null_check_common(Node* value, BasicType type, |
duke@435 | 341 | bool assert_null, Node* *null_control); |
duke@435 | 342 | // Throw an exception if a given value is null. |
duke@435 | 343 | // Return the value cast to not-null. |
duke@435 | 344 | // Be clever about equivalent dominating null checks. |
duke@435 | 345 | Node* do_null_check(Node* value, BasicType type) { |
duke@435 | 346 | return null_check_common(value, type, false, NULL); |
duke@435 | 347 | } |
duke@435 | 348 | // Throw an uncommon trap if a given value is __not__ null. |
duke@435 | 349 | // Return the value cast to null, and be clever about dominating checks. |
duke@435 | 350 | Node* do_null_assert(Node* value, BasicType type) { |
duke@435 | 351 | return null_check_common(value, type, true, NULL); |
duke@435 | 352 | } |
duke@435 | 353 | // Null check oop. Return null-path control into (*null_control). |
duke@435 | 354 | // Return a cast-not-null node which depends on the not-null control. |
duke@435 | 355 | // If never_see_null, use an uncommon trap (*null_control sees a top). |
duke@435 | 356 | // The cast is not valid along the null path; keep a copy of the original. |
duke@435 | 357 | Node* null_check_oop(Node* value, Node* *null_control, |
duke@435 | 358 | bool never_see_null = false); |
duke@435 | 359 | |
jrose@2101 | 360 | // Check the null_seen bit. |
jrose@2101 | 361 | bool seems_never_null(Node* obj, ciProfileData* data); |
jrose@2101 | 362 | |
jrose@2101 | 363 | // Use the type profile to narrow an object type. |
jrose@2101 | 364 | Node* maybe_cast_profiled_receiver(Node* not_null_obj, |
jrose@2101 | 365 | ciProfileData* data, |
jrose@2101 | 366 | ciKlass* require_klass); |
jrose@2101 | 367 | |
duke@435 | 368 | // Cast obj to not-null on this path |
duke@435 | 369 | Node* cast_not_null(Node* obj, bool do_replace_in_map = true); |
duke@435 | 370 | // Replace all occurrences of one node by another. |
duke@435 | 371 | void replace_in_map(Node* old, Node* neww); |
duke@435 | 372 | |
duke@435 | 373 | void push(Node* n) { map_not_null(); _map->set_stack(_map->_jvms,_sp++,n); } |
duke@435 | 374 | Node* pop() { map_not_null(); return _map->stack(_map->_jvms,--_sp); } |
duke@435 | 375 | Node* peek(int off=0) { map_not_null(); return _map->stack(_map->_jvms, _sp - off - 1); } |
duke@435 | 376 | |
duke@435 | 377 | void push_pair(Node* ldval) { |
duke@435 | 378 | push(ldval); |
duke@435 | 379 | push(top()); // the halfword is merely a placeholder |
duke@435 | 380 | } |
duke@435 | 381 | void push_pair_local(int i) { |
duke@435 | 382 | // longs are stored in locals in "push" order |
duke@435 | 383 | push( local(i+0) ); // the real value |
duke@435 | 384 | assert(local(i+1) == top(), ""); |
duke@435 | 385 | push(top()); // halfword placeholder |
duke@435 | 386 | } |
duke@435 | 387 | Node* pop_pair() { |
duke@435 | 388 | // the second half is pushed last & popped first; it contains exactly nothing |
duke@435 | 389 | Node* halfword = pop(); |
duke@435 | 390 | assert(halfword == top(), ""); |
duke@435 | 391 | // the long bits are pushed first & popped last: |
duke@435 | 392 | return pop(); |
duke@435 | 393 | } |
duke@435 | 394 | void set_pair_local(int i, Node* lval) { |
duke@435 | 395 | // longs are stored in locals as a value/half pair (like doubles) |
duke@435 | 396 | set_local(i+0, lval); |
duke@435 | 397 | set_local(i+1, top()); |
duke@435 | 398 | } |
duke@435 | 399 | |
duke@435 | 400 | // Push the node, which may be zero, one, or two words. |
duke@435 | 401 | void push_node(BasicType n_type, Node* n) { |
duke@435 | 402 | int n_size = type2size[n_type]; |
duke@435 | 403 | if (n_size == 1) push( n ); // T_INT, ... |
duke@435 | 404 | else if (n_size == 2) push_pair( n ); // T_DOUBLE, T_LONG |
duke@435 | 405 | else { assert(n_size == 0, "must be T_VOID"); } |
duke@435 | 406 | } |
duke@435 | 407 | |
duke@435 | 408 | Node* pop_node(BasicType n_type) { |
duke@435 | 409 | int n_size = type2size[n_type]; |
duke@435 | 410 | if (n_size == 1) return pop(); |
duke@435 | 411 | else if (n_size == 2) return pop_pair(); |
duke@435 | 412 | else return NULL; |
duke@435 | 413 | } |
duke@435 | 414 | |
duke@435 | 415 | Node* control() const { return map_not_null()->control(); } |
duke@435 | 416 | Node* i_o() const { return map_not_null()->i_o(); } |
duke@435 | 417 | Node* returnadr() const { return map_not_null()->returnadr(); } |
duke@435 | 418 | Node* frameptr() const { return map_not_null()->frameptr(); } |
duke@435 | 419 | Node* local(uint idx) const { map_not_null(); return _map->local( _map->_jvms, idx); } |
duke@435 | 420 | Node* stack(uint idx) const { map_not_null(); return _map->stack( _map->_jvms, idx); } |
duke@435 | 421 | Node* argument(uint idx) const { map_not_null(); return _map->argument( _map->_jvms, idx); } |
duke@435 | 422 | Node* monitor_box(uint idx) const { map_not_null(); return _map->monitor_box(_map->_jvms, idx); } |
duke@435 | 423 | Node* monitor_obj(uint idx) const { map_not_null(); return _map->monitor_obj(_map->_jvms, idx); } |
duke@435 | 424 | |
duke@435 | 425 | void set_control (Node* c) { map_not_null()->set_control(c); } |
duke@435 | 426 | void set_i_o (Node* c) { map_not_null()->set_i_o(c); } |
duke@435 | 427 | void set_local(uint idx, Node* c) { map_not_null(); _map->set_local( _map->_jvms, idx, c); } |
duke@435 | 428 | void set_stack(uint idx, Node* c) { map_not_null(); _map->set_stack( _map->_jvms, idx, c); } |
duke@435 | 429 | void set_argument(uint idx, Node* c){ map_not_null(); _map->set_argument(_map->_jvms, idx, c); } |
duke@435 | 430 | void ensure_stack(uint stk_size) { map_not_null(); _map->ensure_stack(_map->_jvms, stk_size); } |
duke@435 | 431 | |
duke@435 | 432 | // Access unaliased memory |
duke@435 | 433 | Node* memory(uint alias_idx); |
duke@435 | 434 | Node* memory(const TypePtr *tp) { return memory(C->get_alias_index(tp)); } |
duke@435 | 435 | Node* memory(Node* adr) { return memory(_gvn.type(adr)->is_ptr()); } |
duke@435 | 436 | |
duke@435 | 437 | // Access immutable memory |
duke@435 | 438 | Node* immutable_memory() { return C->immutable_memory(); } |
duke@435 | 439 | |
duke@435 | 440 | // Set unaliased memory |
duke@435 | 441 | void set_memory(Node* c, uint alias_idx) { merged_memory()->set_memory_at(alias_idx, c); } |
duke@435 | 442 | void set_memory(Node* c, const TypePtr *tp) { set_memory(c,C->get_alias_index(tp)); } |
duke@435 | 443 | void set_memory(Node* c, Node* adr) { set_memory(c,_gvn.type(adr)->is_ptr()); } |
duke@435 | 444 | |
duke@435 | 445 | // Get the entire memory state (probably a MergeMemNode), and reset it |
duke@435 | 446 | // (The resetting prevents somebody from using the dangling Node pointer.) |
duke@435 | 447 | Node* reset_memory(); |
duke@435 | 448 | |
duke@435 | 449 | // Get the entire memory state, asserted to be a MergeMemNode. |
duke@435 | 450 | MergeMemNode* merged_memory() { |
duke@435 | 451 | Node* mem = map_not_null()->memory(); |
duke@435 | 452 | assert(mem->is_MergeMem(), "parse memory is always pre-split"); |
duke@435 | 453 | return mem->as_MergeMem(); |
duke@435 | 454 | } |
duke@435 | 455 | |
duke@435 | 456 | // Set the entire memory state; produce a new MergeMemNode. |
duke@435 | 457 | void set_all_memory(Node* newmem); |
duke@435 | 458 | |
duke@435 | 459 | // Create a memory projection from the call, then set_all_memory. |
never@1515 | 460 | void set_all_memory_call(Node* call, bool separate_io_proj = false); |
duke@435 | 461 | |
duke@435 | 462 | // Create a LoadNode, reading from the parser's memory state. |
duke@435 | 463 | // (Note: require_atomic_access is useful only with T_LONG.) |
duke@435 | 464 | Node* make_load(Node* ctl, Node* adr, const Type* t, BasicType bt, |
duke@435 | 465 | bool require_atomic_access = false) { |
duke@435 | 466 | // This version computes alias_index from bottom_type |
duke@435 | 467 | return make_load(ctl, adr, t, bt, adr->bottom_type()->is_ptr(), |
duke@435 | 468 | require_atomic_access); |
duke@435 | 469 | } |
duke@435 | 470 | Node* make_load(Node* ctl, Node* adr, const Type* t, BasicType bt, const TypePtr* adr_type, bool require_atomic_access = false) { |
duke@435 | 471 | // This version computes alias_index from an address type |
duke@435 | 472 | assert(adr_type != NULL, "use other make_load factory"); |
duke@435 | 473 | return make_load(ctl, adr, t, bt, C->get_alias_index(adr_type), |
duke@435 | 474 | require_atomic_access); |
duke@435 | 475 | } |
duke@435 | 476 | // This is the base version which is given an alias index. |
duke@435 | 477 | Node* make_load(Node* ctl, Node* adr, const Type* t, BasicType bt, int adr_idx, bool require_atomic_access = false); |
duke@435 | 478 | |
duke@435 | 479 | // Create & transform a StoreNode and store the effect into the |
duke@435 | 480 | // parser's memory state. |
duke@435 | 481 | Node* store_to_memory(Node* ctl, Node* adr, Node* val, BasicType bt, |
duke@435 | 482 | const TypePtr* adr_type, |
duke@435 | 483 | bool require_atomic_access = false) { |
duke@435 | 484 | // This version computes alias_index from an address type |
duke@435 | 485 | assert(adr_type != NULL, "use other store_to_memory factory"); |
duke@435 | 486 | return store_to_memory(ctl, adr, val, bt, |
duke@435 | 487 | C->get_alias_index(adr_type), |
duke@435 | 488 | require_atomic_access); |
duke@435 | 489 | } |
duke@435 | 490 | // This is the base version which is given alias index |
duke@435 | 491 | // Return the new StoreXNode |
duke@435 | 492 | Node* store_to_memory(Node* ctl, Node* adr, Node* val, BasicType bt, |
duke@435 | 493 | int adr_idx, |
duke@435 | 494 | bool require_atomic_access = false); |
duke@435 | 495 | |
duke@435 | 496 | |
duke@435 | 497 | // All in one pre-barrier, store, post_barrier |
duke@435 | 498 | // Insert a write-barrier'd store. This is to let generational GC |
duke@435 | 499 | // work; we have to flag all oop-stores before the next GC point. |
duke@435 | 500 | // |
duke@435 | 501 | // It comes in 3 flavors of store to an object, array, or unknown. |
duke@435 | 502 | // We use precise card marks for arrays to avoid scanning the entire |
duke@435 | 503 | // array. We use imprecise for object. We use precise for unknown |
duke@435 | 504 | // since we don't know if we have an array or and object or even |
duke@435 | 505 | // where the object starts. |
duke@435 | 506 | // |
duke@435 | 507 | // If val==NULL, it is taken to be a completely unknown value. QQQ |
duke@435 | 508 | |
kvn@1286 | 509 | Node* store_oop(Node* ctl, |
kvn@1286 | 510 | Node* obj, // containing obj |
kvn@1286 | 511 | Node* adr, // actual adress to store val at |
kvn@1286 | 512 | const TypePtr* adr_type, |
kvn@1286 | 513 | Node* val, |
kvn@1286 | 514 | const TypeOopPtr* val_type, |
kvn@1286 | 515 | BasicType bt, |
kvn@1286 | 516 | bool use_precise); |
kvn@1286 | 517 | |
duke@435 | 518 | Node* store_oop_to_object(Node* ctl, |
duke@435 | 519 | Node* obj, // containing obj |
duke@435 | 520 | Node* adr, // actual adress to store val at |
duke@435 | 521 | const TypePtr* adr_type, |
duke@435 | 522 | Node* val, |
never@1260 | 523 | const TypeOopPtr* val_type, |
kvn@1286 | 524 | BasicType bt) { |
kvn@1286 | 525 | return store_oop(ctl, obj, adr, adr_type, val, val_type, bt, false); |
kvn@1286 | 526 | } |
duke@435 | 527 | |
duke@435 | 528 | Node* store_oop_to_array(Node* ctl, |
duke@435 | 529 | Node* obj, // containing obj |
duke@435 | 530 | Node* adr, // actual adress to store val at |
duke@435 | 531 | const TypePtr* adr_type, |
duke@435 | 532 | Node* val, |
never@1260 | 533 | const TypeOopPtr* val_type, |
kvn@1286 | 534 | BasicType bt) { |
kvn@1286 | 535 | return store_oop(ctl, obj, adr, adr_type, val, val_type, bt, true); |
kvn@1286 | 536 | } |
duke@435 | 537 | |
duke@435 | 538 | // Could be an array or object we don't know at compile time (unsafe ref.) |
duke@435 | 539 | Node* store_oop_to_unknown(Node* ctl, |
duke@435 | 540 | Node* obj, // containing obj |
duke@435 | 541 | Node* adr, // actual adress to store val at |
duke@435 | 542 | const TypePtr* adr_type, |
duke@435 | 543 | Node* val, |
duke@435 | 544 | BasicType bt); |
duke@435 | 545 | |
duke@435 | 546 | // For the few case where the barriers need special help |
duke@435 | 547 | void pre_barrier(Node* ctl, Node* obj, Node* adr, uint adr_idx, |
never@1260 | 548 | Node* val, const TypeOopPtr* val_type, BasicType bt); |
duke@435 | 549 | |
duke@435 | 550 | void post_barrier(Node* ctl, Node* store, Node* obj, Node* adr, uint adr_idx, |
duke@435 | 551 | Node* val, BasicType bt, bool use_precise); |
duke@435 | 552 | |
duke@435 | 553 | // Return addressing for an array element. |
duke@435 | 554 | Node* array_element_address(Node* ary, Node* idx, BasicType elembt, |
duke@435 | 555 | // Optional constraint on the array size: |
duke@435 | 556 | const TypeInt* sizetype = NULL); |
duke@435 | 557 | |
duke@435 | 558 | // Return a load of array element at idx. |
duke@435 | 559 | Node* load_array_element(Node* ctl, Node* ary, Node* idx, const TypeAryPtr* arytype); |
duke@435 | 560 | |
duke@435 | 561 | //---------------- Dtrace support -------------------- |
duke@435 | 562 | void make_dtrace_method_entry_exit(ciMethod* method, bool is_entry); |
duke@435 | 563 | void make_dtrace_method_entry(ciMethod* method) { |
duke@435 | 564 | make_dtrace_method_entry_exit(method, true); |
duke@435 | 565 | } |
duke@435 | 566 | void make_dtrace_method_exit(ciMethod* method) { |
duke@435 | 567 | make_dtrace_method_entry_exit(method, false); |
duke@435 | 568 | } |
duke@435 | 569 | |
duke@435 | 570 | //--------------- stub generation ------------------- |
duke@435 | 571 | public: |
duke@435 | 572 | void gen_stub(address C_function, |
duke@435 | 573 | const char *name, |
duke@435 | 574 | int is_fancy_jump, |
duke@435 | 575 | bool pass_tls, |
duke@435 | 576 | bool return_pc); |
duke@435 | 577 | |
duke@435 | 578 | //---------- help for generating calls -------------- |
duke@435 | 579 | |
duke@435 | 580 | // Do a null check on the receiver, which is in argument(0). |
duke@435 | 581 | Node* null_check_receiver(ciMethod* callee) { |
duke@435 | 582 | assert(!callee->is_static(), "must be a virtual method"); |
duke@435 | 583 | int nargs = 1 + callee->signature()->size(); |
duke@435 | 584 | // Null check on self without removing any arguments. The argument |
duke@435 | 585 | // null check technically happens in the wrong place, which can lead to |
duke@435 | 586 | // invalid stack traces when the primitive is inlined into a method |
duke@435 | 587 | // which handles NullPointerExceptions. |
duke@435 | 588 | Node* receiver = argument(0); |
duke@435 | 589 | _sp += nargs; |
duke@435 | 590 | receiver = do_null_check(receiver, T_OBJECT); |
duke@435 | 591 | _sp -= nargs; |
duke@435 | 592 | return receiver; |
duke@435 | 593 | } |
duke@435 | 594 | |
duke@435 | 595 | // Fill in argument edges for the call from argument(0), argument(1), ... |
duke@435 | 596 | // (The next step is to call set_edges_for_java_call.) |
duke@435 | 597 | void set_arguments_for_java_call(CallJavaNode* call); |
duke@435 | 598 | |
duke@435 | 599 | // Fill in non-argument edges for the call. |
duke@435 | 600 | // Transform the call, and update the basics: control, i_o, memory. |
duke@435 | 601 | // (The next step is usually to call set_results_for_java_call.) |
duke@435 | 602 | void set_edges_for_java_call(CallJavaNode* call, |
never@1515 | 603 | bool must_throw = false, bool separate_io_proj = false); |
duke@435 | 604 | |
duke@435 | 605 | // Finish up a java call that was started by set_edges_for_java_call. |
duke@435 | 606 | // Call add_exception on any throw arising from the call. |
duke@435 | 607 | // Return the call result (transformed). |
never@1515 | 608 | Node* set_results_for_java_call(CallJavaNode* call, bool separate_io_proj = false); |
duke@435 | 609 | |
duke@435 | 610 | // Similar to set_edges_for_java_call, but simplified for runtime calls. |
duke@435 | 611 | void set_predefined_output_for_runtime_call(Node* call) { |
duke@435 | 612 | set_predefined_output_for_runtime_call(call, NULL, NULL); |
duke@435 | 613 | } |
duke@435 | 614 | void set_predefined_output_for_runtime_call(Node* call, |
duke@435 | 615 | Node* keep_mem, |
duke@435 | 616 | const TypePtr* hook_mem); |
duke@435 | 617 | Node* set_predefined_input_for_runtime_call(SafePointNode* call); |
duke@435 | 618 | |
never@1515 | 619 | // Replace the call with the current state of the kit. Requires |
never@1515 | 620 | // that the call was generated with separate io_projs so that |
never@1515 | 621 | // exceptional control flow can be handled properly. |
never@1515 | 622 | void replace_call(CallNode* call, Node* result); |
never@1515 | 623 | |
duke@435 | 624 | // helper functions for statistics |
duke@435 | 625 | void increment_counter(address counter_addr); // increment a debug counter |
duke@435 | 626 | void increment_counter(Node* counter_addr); // increment a debug counter |
duke@435 | 627 | |
duke@435 | 628 | // Bail out to the interpreter right now |
duke@435 | 629 | // The optional klass is the one causing the trap. |
duke@435 | 630 | // The optional reason is debug information written to the compile log. |
duke@435 | 631 | // Optional must_throw is the same as with add_safepoint_edges. |
duke@435 | 632 | void uncommon_trap(int trap_request, |
duke@435 | 633 | ciKlass* klass = NULL, const char* reason_string = NULL, |
duke@435 | 634 | bool must_throw = false, bool keep_exact_action = false); |
duke@435 | 635 | |
duke@435 | 636 | // Shorthand, to avoid saying "Deoptimization::" so many times. |
duke@435 | 637 | void uncommon_trap(Deoptimization::DeoptReason reason, |
duke@435 | 638 | Deoptimization::DeoptAction action, |
duke@435 | 639 | ciKlass* klass = NULL, const char* reason_string = NULL, |
duke@435 | 640 | bool must_throw = false, bool keep_exact_action = false) { |
duke@435 | 641 | uncommon_trap(Deoptimization::make_trap_request(reason, action), |
duke@435 | 642 | klass, reason_string, must_throw, keep_exact_action); |
duke@435 | 643 | } |
duke@435 | 644 | |
duke@435 | 645 | // Report if there were too many traps at the current method and bci. |
duke@435 | 646 | // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded. |
duke@435 | 647 | // If there is no MDO at all, report no trap unless told to assume it. |
duke@435 | 648 | bool too_many_traps(Deoptimization::DeoptReason reason) { |
duke@435 | 649 | return C->too_many_traps(method(), bci(), reason); |
duke@435 | 650 | } |
duke@435 | 651 | |
duke@435 | 652 | // Report if there were too many recompiles at the current method and bci. |
duke@435 | 653 | bool too_many_recompiles(Deoptimization::DeoptReason reason) { |
duke@435 | 654 | return C->too_many_recompiles(method(), bci(), reason); |
duke@435 | 655 | } |
duke@435 | 656 | |
duke@435 | 657 | // Returns the object (if any) which was created the moment before. |
duke@435 | 658 | Node* just_allocated_object(Node* current_control); |
duke@435 | 659 | |
duke@435 | 660 | static bool use_ReduceInitialCardMarks() { |
duke@435 | 661 | return (ReduceInitialCardMarks |
duke@435 | 662 | && Universe::heap()->can_elide_tlab_store_barriers()); |
duke@435 | 663 | } |
duke@435 | 664 | |
kvn@2726 | 665 | // Sync Ideal and Graph kits. |
kvn@1286 | 666 | void sync_kit(IdealKit& ideal); |
kvn@2726 | 667 | void final_sync(IdealKit& ideal); |
kvn@1286 | 668 | |
kvn@1286 | 669 | // vanilla/CMS post barrier |
cfang@1420 | 670 | void write_barrier_post(Node *store, Node* obj, |
cfang@1420 | 671 | Node* adr, uint adr_idx, Node* val, bool use_precise); |
kvn@1286 | 672 | |
ysr@777 | 673 | // G1 pre/post barriers |
ysr@777 | 674 | void g1_write_barrier_pre(Node* obj, |
ysr@777 | 675 | Node* adr, |
ysr@777 | 676 | uint alias_idx, |
ysr@777 | 677 | Node* val, |
never@1260 | 678 | const TypeOopPtr* val_type, |
ysr@777 | 679 | BasicType bt); |
ysr@777 | 680 | |
ysr@777 | 681 | void g1_write_barrier_post(Node* store, |
ysr@777 | 682 | Node* obj, |
ysr@777 | 683 | Node* adr, |
ysr@777 | 684 | uint alias_idx, |
ysr@777 | 685 | Node* val, |
ysr@777 | 686 | BasicType bt, |
ysr@777 | 687 | bool use_precise); |
ysr@777 | 688 | // Helper function for g1 |
ysr@777 | 689 | private: |
cfang@1420 | 690 | void g1_mark_card(IdealKit& ideal, Node* card_adr, Node* store, uint oop_alias_idx, |
cfang@1420 | 691 | Node* index, Node* index_adr, |
ysr@777 | 692 | Node* buffer, const TypeFunc* tf); |
ysr@777 | 693 | |
ysr@777 | 694 | public: |
duke@435 | 695 | // Helper function to round double arguments before a call |
duke@435 | 696 | void round_double_arguments(ciMethod* dest_method); |
duke@435 | 697 | void round_double_result(ciMethod* dest_method); |
duke@435 | 698 | |
duke@435 | 699 | // rounding for strict float precision conformance |
duke@435 | 700 | Node* precision_rounding(Node* n); |
duke@435 | 701 | |
duke@435 | 702 | // rounding for strict double precision conformance |
duke@435 | 703 | Node* dprecision_rounding(Node* n); |
duke@435 | 704 | |
duke@435 | 705 | // rounding for non-strict double stores |
duke@435 | 706 | Node* dstore_rounding(Node* n); |
duke@435 | 707 | |
duke@435 | 708 | // Helper functions for fast/slow path codes |
duke@435 | 709 | Node* opt_iff(Node* region, Node* iff); |
duke@435 | 710 | Node* make_runtime_call(int flags, |
duke@435 | 711 | const TypeFunc* call_type, address call_addr, |
duke@435 | 712 | const char* call_name, |
duke@435 | 713 | const TypePtr* adr_type, // NULL if no memory effects |
duke@435 | 714 | Node* parm0 = NULL, Node* parm1 = NULL, |
duke@435 | 715 | Node* parm2 = NULL, Node* parm3 = NULL, |
duke@435 | 716 | Node* parm4 = NULL, Node* parm5 = NULL, |
duke@435 | 717 | Node* parm6 = NULL, Node* parm7 = NULL); |
duke@435 | 718 | enum { // flag values for make_runtime_call |
duke@435 | 719 | RC_NO_FP = 1, // CallLeafNoFPNode |
duke@435 | 720 | RC_NO_IO = 2, // do not hook IO edges |
duke@435 | 721 | RC_NO_LEAF = 4, // CallStaticJavaNode |
duke@435 | 722 | RC_MUST_THROW = 8, // flag passed to add_safepoint_edges |
duke@435 | 723 | RC_NARROW_MEM = 16, // input memory is same as output |
duke@435 | 724 | RC_UNCOMMON = 32, // freq. expected to be like uncommon trap |
duke@435 | 725 | RC_LEAF = 0 // null value: no flags set |
duke@435 | 726 | }; |
duke@435 | 727 | |
duke@435 | 728 | // merge in all memory slices from new_mem, along the given path |
duke@435 | 729 | void merge_memory(Node* new_mem, Node* region, int new_path); |
duke@435 | 730 | void make_slow_call_ex(Node* call, ciInstanceKlass* ex_klass, bool separate_io_proj); |
duke@435 | 731 | |
duke@435 | 732 | // Helper functions to build synchronizations |
duke@435 | 733 | int next_monitor(); |
duke@435 | 734 | Node* insert_mem_bar(int opcode, Node* precedent = NULL); |
duke@435 | 735 | Node* insert_mem_bar_volatile(int opcode, int alias_idx, Node* precedent = NULL); |
duke@435 | 736 | // Optional 'precedent' is appended as an extra edge, to force ordering. |
duke@435 | 737 | FastLockNode* shared_lock(Node* obj); |
duke@435 | 738 | void shared_unlock(Node* box, Node* obj); |
duke@435 | 739 | |
duke@435 | 740 | // helper functions for the fast path/slow path idioms |
duke@435 | 741 | Node* fast_and_slow(Node* in, const Type *result_type, Node* null_result, IfNode* fast_test, Node* fast_result, address slow_call, const TypeFunc *slow_call_type, Node* slow_arg, klassOop ex_klass, Node* slow_result); |
duke@435 | 742 | |
duke@435 | 743 | // Generate an instance-of idiom. Used by both the instance-of bytecode |
duke@435 | 744 | // and the reflective instance-of call. |
duke@435 | 745 | Node* gen_instanceof( Node *subobj, Node* superkls ); |
duke@435 | 746 | |
duke@435 | 747 | // Generate a check-cast idiom. Used by both the check-cast bytecode |
duke@435 | 748 | // and the array-store bytecode |
duke@435 | 749 | Node* gen_checkcast( Node *subobj, Node* superkls, |
duke@435 | 750 | Node* *failure_control = NULL ); |
duke@435 | 751 | |
duke@435 | 752 | // Generate a subtyping check. Takes as input the subtype and supertype. |
duke@435 | 753 | // Returns 2 values: sets the default control() to the true path and |
duke@435 | 754 | // returns the false path. Only reads from constant memory taken from the |
duke@435 | 755 | // default memory; does not write anything. It also doesn't take in an |
duke@435 | 756 | // Object; if you wish to check an Object you need to load the Object's |
duke@435 | 757 | // class prior to coming here. |
duke@435 | 758 | Node* gen_subtype_check(Node* subklass, Node* superklass); |
duke@435 | 759 | |
duke@435 | 760 | // Static parse-time type checking logic for gen_subtype_check: |
duke@435 | 761 | enum { SSC_always_false, SSC_always_true, SSC_easy_test, SSC_full_test }; |
duke@435 | 762 | int static_subtype_check(ciKlass* superk, ciKlass* subk); |
duke@435 | 763 | |
duke@435 | 764 | // Exact type check used for predicted calls and casts. |
duke@435 | 765 | // Rewrites (*casted_receiver) to be casted to the stronger type. |
duke@435 | 766 | // (Caller is responsible for doing replace_in_map.) |
duke@435 | 767 | Node* type_check_receiver(Node* receiver, ciKlass* klass, float prob, |
duke@435 | 768 | Node* *casted_receiver); |
duke@435 | 769 | |
duke@435 | 770 | // implementation of object creation |
duke@435 | 771 | Node* set_output_for_allocation(AllocateNode* alloc, |
duke@435 | 772 | const TypeOopPtr* oop_type, |
duke@435 | 773 | bool raw_mem_only); |
duke@435 | 774 | Node* get_layout_helper(Node* klass_node, jint& constant_value); |
duke@435 | 775 | Node* new_instance(Node* klass_node, |
duke@435 | 776 | Node* slow_test = NULL, |
duke@435 | 777 | bool raw_mem_only = false, |
duke@435 | 778 | Node* *return_size_val = NULL); |
cfang@1165 | 779 | Node* new_array(Node* klass_node, Node* count_val, int nargs, |
duke@435 | 780 | bool raw_mem_only = false, Node* *return_size_val = NULL); |
duke@435 | 781 | |
duke@435 | 782 | // Handy for making control flow |
duke@435 | 783 | IfNode* create_and_map_if(Node* ctrl, Node* tst, float prob, float cnt) { |
duke@435 | 784 | IfNode* iff = new (C, 2) IfNode(ctrl, tst, prob, cnt);// New IfNode's |
duke@435 | 785 | _gvn.set_type(iff, iff->Value(&_gvn)); // Value may be known at parse-time |
duke@435 | 786 | // Place 'if' on worklist if it will be in graph |
duke@435 | 787 | if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later |
duke@435 | 788 | return iff; |
duke@435 | 789 | } |
duke@435 | 790 | |
duke@435 | 791 | IfNode* create_and_xform_if(Node* ctrl, Node* tst, float prob, float cnt) { |
duke@435 | 792 | IfNode* iff = new (C, 2) IfNode(ctrl, tst, prob, cnt);// New IfNode's |
duke@435 | 793 | _gvn.transform(iff); // Value may be known at parse-time |
duke@435 | 794 | // Place 'if' on worklist if it will be in graph |
duke@435 | 795 | if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later |
duke@435 | 796 | return iff; |
duke@435 | 797 | } |
kvn@2665 | 798 | |
kvn@2665 | 799 | // Insert a loop predicate into the graph |
kvn@2665 | 800 | void add_predicate(int nargs = 0); |
kvn@2665 | 801 | void add_predicate_impl(Deoptimization::DeoptReason reason, int nargs); |
duke@435 | 802 | }; |
duke@435 | 803 | |
duke@435 | 804 | // Helper class to support building of control flow branches. Upon |
duke@435 | 805 | // creation the map and sp at bci are cloned and restored upon de- |
duke@435 | 806 | // struction. Typical use: |
duke@435 | 807 | // |
duke@435 | 808 | // { PreserveJVMState pjvms(this); |
duke@435 | 809 | // // code of new branch |
duke@435 | 810 | // } |
duke@435 | 811 | // // here the JVM state at bci is established |
duke@435 | 812 | |
duke@435 | 813 | class PreserveJVMState: public StackObj { |
duke@435 | 814 | protected: |
duke@435 | 815 | GraphKit* _kit; |
duke@435 | 816 | #ifdef ASSERT |
duke@435 | 817 | int _block; // PO of current block, if a Parse |
duke@435 | 818 | int _bci; |
duke@435 | 819 | #endif |
duke@435 | 820 | SafePointNode* _map; |
duke@435 | 821 | uint _sp; |
duke@435 | 822 | |
duke@435 | 823 | public: |
duke@435 | 824 | PreserveJVMState(GraphKit* kit, bool clone_map = true); |
duke@435 | 825 | ~PreserveJVMState(); |
duke@435 | 826 | }; |
duke@435 | 827 | |
duke@435 | 828 | // Helper class to build cutouts of the form if (p) ; else {x...}. |
duke@435 | 829 | // The code {x...} must not fall through. |
duke@435 | 830 | // The kit's main flow of control is set to the "then" continuation of if(p). |
duke@435 | 831 | class BuildCutout: public PreserveJVMState { |
duke@435 | 832 | public: |
duke@435 | 833 | BuildCutout(GraphKit* kit, Node* p, float prob, float cnt = COUNT_UNKNOWN); |
duke@435 | 834 | ~BuildCutout(); |
duke@435 | 835 | }; |
cfang@1335 | 836 | |
cfang@1335 | 837 | // Helper class to preserve the original _reexecute bit and _sp and restore |
cfang@1335 | 838 | // them back |
cfang@1335 | 839 | class PreserveReexecuteState: public StackObj { |
cfang@1335 | 840 | protected: |
cfang@1335 | 841 | GraphKit* _kit; |
cfang@1335 | 842 | uint _sp; |
cfang@1335 | 843 | JVMState::ReexecuteState _reexecute; |
cfang@1335 | 844 | |
cfang@1335 | 845 | public: |
cfang@1335 | 846 | PreserveReexecuteState(GraphKit* kit); |
cfang@1335 | 847 | ~PreserveReexecuteState(); |
cfang@1335 | 848 | }; |
stefank@2314 | 849 | |
stefank@2314 | 850 | #endif // SHARE_VM_OPTO_GRAPHKIT_HPP |