Mercurial > hg > graal-jvmci-8
comparison src/share/vm/opto/chaitin.hpp @ 12355:cefad50507d8
Merge with hs25-b53
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 11 Oct 2013 10:38:03 +0200 |
parents | 8c83625e3a53 |
children | d8a449d2f5b2 |
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12058:ccb4f2af2319 | 12355:cefad50507d8 |
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281 // Map from Nodes to live ranges | 281 // Map from Nodes to live ranges |
282 LRG_List _names; | 282 LRG_List _names; |
283 | 283 |
284 // Straight out of Tarjan's union-find algorithm | 284 // Straight out of Tarjan's union-find algorithm |
285 uint find_compress(const Node *node) { | 285 uint find_compress(const Node *node) { |
286 uint lrg_id = find_compress(_names[node->_idx]); | 286 uint lrg_id = find_compress(_names.at(node->_idx)); |
287 _names.map(node->_idx, lrg_id); | 287 _names.at_put(node->_idx, lrg_id); |
288 return lrg_id; | 288 return lrg_id; |
289 } | 289 } |
290 | 290 |
291 uint find_compress(uint lrg); | 291 uint find_compress(uint lrg); |
292 | 292 |
303 void set_max_lrg_id(uint max_lrg_id) { | 303 void set_max_lrg_id(uint max_lrg_id) { |
304 _max_lrg_id = max_lrg_id; | 304 _max_lrg_id = max_lrg_id; |
305 } | 305 } |
306 | 306 |
307 uint size() const { | 307 uint size() const { |
308 return _names.Size(); | 308 return _names.length(); |
309 } | 309 } |
310 | 310 |
311 uint live_range_id(uint idx) const { | 311 uint live_range_id(uint idx) const { |
312 return _names[idx]; | 312 return _names.at(idx); |
313 } | 313 } |
314 | 314 |
315 uint live_range_id(const Node *node) const { | 315 uint live_range_id(const Node *node) const { |
316 return _names[node->_idx]; | 316 return _names.at(node->_idx); |
317 } | 317 } |
318 | 318 |
319 uint uf_live_range_id(uint lrg_id) const { | 319 uint uf_live_range_id(uint lrg_id) const { |
320 return _uf_map[lrg_id]; | 320 return _uf_map.at(lrg_id); |
321 } | 321 } |
322 | 322 |
323 void map(uint idx, uint lrg_id) { | 323 void map(uint idx, uint lrg_id) { |
324 _names.map(idx, lrg_id); | 324 _names.at_put(idx, lrg_id); |
325 } | 325 } |
326 | 326 |
327 void uf_map(uint dst_lrg_id, uint src_lrg_id) { | 327 void uf_map(uint dst_lrg_id, uint src_lrg_id) { |
328 _uf_map.map(dst_lrg_id, src_lrg_id); | 328 _uf_map.at_put(dst_lrg_id, src_lrg_id); |
329 } | 329 } |
330 | 330 |
331 void extend(uint idx, uint lrg_id) { | 331 void extend(uint idx, uint lrg_id) { |
332 _names.extend(idx, lrg_id); | 332 _names.at_put_grow(idx, lrg_id); |
333 } | 333 } |
334 | 334 |
335 void uf_extend(uint dst_lrg_id, uint src_lrg_id) { | 335 void uf_extend(uint dst_lrg_id, uint src_lrg_id) { |
336 _uf_map.extend(dst_lrg_id, src_lrg_id); | 336 _uf_map.at_put_grow(dst_lrg_id, src_lrg_id); |
337 } | 337 } |
338 | 338 |
339 LiveRangeMap(uint unique) | 339 LiveRangeMap(Arena* arena, uint unique) |
340 : _names(unique) | 340 : _names(arena, unique, unique, 0) |
341 , _uf_map(unique) | 341 , _uf_map(arena, unique, unique, 0) |
342 , _max_lrg_id(0) {} | 342 , _max_lrg_id(0) {} |
343 | 343 |
344 uint find_id( const Node *n ) { | 344 uint find_id( const Node *n ) { |
345 uint retval = live_range_id(n); | 345 uint retval = live_range_id(n); |
346 assert(retval == find(n),"Invalid node to lidx mapping"); | 346 assert(retval == find(n),"Invalid node to lidx mapping"); |
353 // Make all Nodes map directly to their final live range; no need for | 353 // Make all Nodes map directly to their final live range; no need for |
354 // the Union-Find mapping after this call. | 354 // the Union-Find mapping after this call. |
355 void compress_uf_map_for_nodes(); | 355 void compress_uf_map_for_nodes(); |
356 | 356 |
357 uint find(uint lidx) { | 357 uint find(uint lidx) { |
358 uint uf_lidx = _uf_map[lidx]; | 358 uint uf_lidx = _uf_map.at(lidx); |
359 return (uf_lidx == lidx) ? uf_lidx : find_compress(lidx); | 359 return (uf_lidx == lidx) ? uf_lidx : find_compress(lidx); |
360 } | 360 } |
361 | 361 |
362 // Convert a Node into a Live Range Index - a lidx | 362 // Convert a Node into a Live Range Index - a lidx |
363 uint find(const Node *node) { | 363 uint find(const Node *node) { |
364 uint lidx = live_range_id(node); | 364 uint lidx = live_range_id(node); |
365 uint uf_lidx = _uf_map[lidx]; | 365 uint uf_lidx = _uf_map.at(lidx); |
366 return (uf_lidx == lidx) ? uf_lidx : find_compress(node); | 366 return (uf_lidx == lidx) ? uf_lidx : find_compress(node); |
367 } | 367 } |
368 | 368 |
369 // Like Find above, but no path compress, so bad asymptotic behavior | 369 // Like Find above, but no path compress, so bad asymptotic behavior |
370 uint find_const(uint lrg) const; | 370 uint find_const(uint lrg) const; |
371 | 371 |
372 // Like Find above, but no path compress, so bad asymptotic behavior | 372 // Like Find above, but no path compress, so bad asymptotic behavior |
373 uint find_const(const Node *node) const { | 373 uint find_const(const Node *node) const { |
374 if(node->_idx >= _names.Size()) { | 374 if(node->_idx >= (uint)_names.length()) { |
375 return 0; // not mapped, usual for debug dump | 375 return 0; // not mapped, usual for debug dump |
376 } | 376 } |
377 return find_const(_names[node->_idx]); | 377 return find_const(_names.at(node->_idx)); |
378 } | 378 } |
379 }; | 379 }; |
380 | 380 |
381 //------------------------------Chaitin---------------------------------------- | 381 //------------------------------Chaitin---------------------------------------- |
382 // Briggs-Chaitin style allocation, mostly. | 382 // Briggs-Chaitin style allocation, mostly. |
410 | 410 |
411 // Helper functions for Split() | 411 // Helper functions for Split() |
412 uint split_DEF( Node *def, Block *b, int loc, uint max, Node **Reachblock, Node **debug_defs, GrowableArray<uint> splits, int slidx ); | 412 uint split_DEF( Node *def, Block *b, int loc, uint max, Node **Reachblock, Node **debug_defs, GrowableArray<uint> splits, int slidx ); |
413 uint split_USE( Node *def, Block *b, Node *use, uint useidx, uint max, bool def_down, bool cisc_sp, GrowableArray<uint> splits, int slidx ); | 413 uint split_USE( Node *def, Block *b, Node *use, uint useidx, uint max, bool def_down, bool cisc_sp, GrowableArray<uint> splits, int slidx ); |
414 | 414 |
415 bool clone_projs(Block *b, uint idx, Node *con, Node *copy, LiveRangeMap &lrg_map) { | |
416 bool found_projs = clone_projs_shared(b, idx, con, copy, lrg_map.max_lrg_id()); | |
417 | |
418 if(found_projs) { | |
419 uint max_lrg_id = lrg_map.max_lrg_id(); | |
420 lrg_map.set_max_lrg_id(max_lrg_id + 1); | |
421 } | |
422 | |
423 return found_projs; | |
424 } | |
425 | |
426 //------------------------------clone_projs------------------------------------ | 415 //------------------------------clone_projs------------------------------------ |
427 // After cloning some rematerialized instruction, clone any MachProj's that | 416 // After cloning some rematerialized instruction, clone any MachProj's that |
428 // follow it. Example: Intel zero is XOR, kills flags. Sparc FP constants | 417 // follow it. Example: Intel zero is XOR, kills flags. Sparc FP constants |
429 // use G3 as an address temp. | 418 // use G3 as an address temp. |
430 bool clone_projs(Block *b, uint idx, Node *con, Node *copy, uint &max_lrg_id) { | 419 int clone_projs(Block* b, uint idx, Node* orig, Node* copy, uint& max_lrg_id); |
431 bool found_projs = clone_projs_shared(b, idx, con, copy, max_lrg_id); | 420 |
432 | 421 int clone_projs(Block* b, uint idx, Node* orig, Node* copy, LiveRangeMap& lrg_map) { |
433 if(found_projs) { | 422 uint max_lrg_id = lrg_map.max_lrg_id(); |
434 max_lrg_id++; | 423 int found_projs = clone_projs(b, idx, orig, copy, max_lrg_id); |
424 if (found_projs > 0) { | |
425 // max_lrg_id is updated during call above | |
426 lrg_map.set_max_lrg_id(max_lrg_id); | |
435 } | 427 } |
436 | |
437 return found_projs; | 428 return found_projs; |
438 } | 429 } |
439 | |
440 bool clone_projs_shared(Block *b, uint idx, Node *con, Node *copy, uint max_lrg_id); | |
441 | 430 |
442 Node *split_Rematerialize(Node *def, Block *b, uint insidx, uint &maxlrg, GrowableArray<uint> splits, | 431 Node *split_Rematerialize(Node *def, Block *b, uint insidx, uint &maxlrg, GrowableArray<uint> splits, |
443 int slidx, uint *lrg2reach, Node **Reachblock, bool walkThru); | 432 int slidx, uint *lrg2reach, Node **Reachblock, bool walkThru); |
444 // True if lidx is used before any real register is def'd in the block | 433 // True if lidx is used before any real register is def'd in the block |
445 bool prompt_use( Block *b, uint lidx ); | 434 bool prompt_use( Block *b, uint lidx ); |