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431 |
431 |
432 //------------------------------Ideal_DU_postCCP------------------------------- |
432 //------------------------------Ideal_DU_postCCP------------------------------- |
433 // If not converting int->oop, throw away cast after constant propagation |
433 // If not converting int->oop, throw away cast after constant propagation |
434 Node *CastPPNode::Ideal_DU_postCCP( PhaseCCP *ccp ) { |
434 Node *CastPPNode::Ideal_DU_postCCP( PhaseCCP *ccp ) { |
435 const Type *t = ccp->type(in(1)); |
435 const Type *t = ccp->type(in(1)); |
436 if (!t->isa_oop_ptr() || in(1)->is_DecodeN()) { |
436 if (!t->isa_oop_ptr() || (in(1)->is_DecodeN() && Universe::narrow_oop_use_implicit_null_checks())) { |
437 return NULL; // do not transform raw pointers or narrow oops |
437 return NULL; // do not transform raw pointers or narrow oops |
438 } |
438 } |
439 return ConstraintCastNode::Ideal_DU_postCCP(ccp); |
439 return ConstraintCastNode::Ideal_DU_postCCP(ccp); |
440 } |
440 } |
441 |
441 |