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comparison graal/GraalCompiler/src/com/sun/c1x/graph/BlockMap.java @ 2840:75e0d39833a0

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new CompilerGraph, create only one Return and one Unwind per CompilerGraph
author Lukas Stadler <lukas.stadler@jku.at>
date Tue, 31 May 2011 16:53:19 +0200
parents 706047ee5f2e
children
comparison
equal deleted inserted replaced
2837:7b5831f0e913 2840:75e0d39833a0
399 399
400 private HashMap<RiExceptionHandler, ExceptionBlock> exceptionDispatch = new HashMap<RiExceptionHandler, ExceptionBlock>(); 400 private HashMap<RiExceptionHandler, ExceptionBlock> exceptionDispatch = new HashMap<RiExceptionHandler, ExceptionBlock>();
401 401
402 private ExceptionBlock unwindBlock; 402 private ExceptionBlock unwindBlock;
403 403
404 private ExceptionBlock makeUnwind() {
405 if (unwindBlock == null) {
406 unwindBlock = new ExceptionBlock();
407 unwindBlock.startBci = -1;
408 unwindBlock.endBci = -1;
409 }
410 return unwindBlock;
411 }
412
413 private Block makeExceptionDispatch(List<RiExceptionHandler> handlers, int index) { 404 private Block makeExceptionDispatch(List<RiExceptionHandler> handlers, int index) {
414 RiExceptionHandler handler = handlers.get(index); 405 RiExceptionHandler handler = handlers.get(index);
415 if (handler.isCatchAll()) { 406 if (handler.isCatchAll()) {
416 return blockMap[handler.handlerBCI()]; 407 return blockMap[handler.handlerBCI()];
417 } 408 }
420 block = new ExceptionBlock(); 411 block = new ExceptionBlock();
421 block.startBci = -1; 412 block.startBci = -1;
422 block.endBci = -1; 413 block.endBci = -1;
423 block.handler = handler; 414 block.handler = handler;
424 block.successors.add(blockMap[handler.handlerBCI()]); 415 block.successors.add(blockMap[handler.handlerBCI()]);
425 Block next;
426 if (index < handlers.size() - 1) { 416 if (index < handlers.size() - 1) {
427 next = makeExceptionDispatch(handlers, index + 1); 417 block.next = makeExceptionDispatch(handlers, index + 1);
428 } else { 418 block.successors.add(block.next);
429 next = makeUnwind(); 419 }
430 }
431 block.successors.add(next);
432 block.next = next;
433 exceptionDispatch.put(handler, block); 420 exceptionDispatch.put(handler, block);
434 } 421 }
435 return block; 422 return block;
436 } 423 }
437 424