461 _kill.clear();
462
463 while (bytes->next() != ciBytecodeStream::EOBC()) {
464 compute_gen_kill_single(bytes);
465 }
466 }
467
468 void MethodLiveness::BasicBlock::compute_gen_kill_single(ciBytecodeStream *instruction) {
469 int localNum;
470
471 // We prohibit _gen and _kill from having locals in common. If we
472 // know that one is definitely going to be applied before the other,
473 // we could save some computation time by relaxing this prohibition.
474
475 switch (instruction->cur_bc()) {
476 case Bytecodes::_nop:
477 case Bytecodes::_goto:
478 case Bytecodes::_goto_w:
479 case Bytecodes::_aconst_null:
480 case Bytecodes::_new:
481 case Bytecodes::_iconst_m1:
482 case Bytecodes::_iconst_0:
483 case Bytecodes::_iconst_1:
484 case Bytecodes::_iconst_2:
485 case Bytecodes::_iconst_3:
486 case Bytecodes::_iconst_4:
487 case Bytecodes::_iconst_5:
488 case Bytecodes::_fconst_0:
489 case Bytecodes::_fconst_1:
490 case Bytecodes::_fconst_2:
491 case Bytecodes::_bipush:
492 case Bytecodes::_sipush:
493 case Bytecodes::_lconst_0:
494 case Bytecodes::_lconst_1:
495 case Bytecodes::_dconst_0:
496 case Bytecodes::_dconst_1:
497 case Bytecodes::_ldc2_w:
498 case Bytecodes::_ldc:
499 case Bytecodes::_ldc_w:
500 case Bytecodes::_iaload:
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461 _kill.clear();
462
463 while (bytes->next() != ciBytecodeStream::EOBC()) {
464 compute_gen_kill_single(bytes);
465 }
466 }
467
468 void MethodLiveness::BasicBlock::compute_gen_kill_single(ciBytecodeStream *instruction) {
469 int localNum;
470
471 // We prohibit _gen and _kill from having locals in common. If we
472 // know that one is definitely going to be applied before the other,
473 // we could save some computation time by relaxing this prohibition.
474
475 switch (instruction->cur_bc()) {
476 case Bytecodes::_nop:
477 case Bytecodes::_goto:
478 case Bytecodes::_goto_w:
479 case Bytecodes::_aconst_null:
480 case Bytecodes::_new:
481 case Bytecodes::_defaultvalue:
482 case Bytecodes::_withfield:
483 case Bytecodes::_iconst_m1:
484 case Bytecodes::_iconst_0:
485 case Bytecodes::_iconst_1:
486 case Bytecodes::_iconst_2:
487 case Bytecodes::_iconst_3:
488 case Bytecodes::_iconst_4:
489 case Bytecodes::_iconst_5:
490 case Bytecodes::_fconst_0:
491 case Bytecodes::_fconst_1:
492 case Bytecodes::_fconst_2:
493 case Bytecodes::_bipush:
494 case Bytecodes::_sipush:
495 case Bytecodes::_lconst_0:
496 case Bytecodes::_lconst_1:
497 case Bytecodes::_dconst_0:
498 case Bytecodes::_dconst_1:
499 case Bytecodes::_ldc2_w:
500 case Bytecodes::_ldc:
501 case Bytecodes::_ldc_w:
502 case Bytecodes::_iaload:
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