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src/share/vm/opto/connode.cpp

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*** 542,565 **** } } #endif //============================================================================= - - //------------------------------Ideal_DU_postCCP------------------------------- - // If not converting int->oop, throw away cast after constant propagation - Node *CastPPNode::Ideal_DU_postCCP( PhaseCCP *ccp ) { - const Type *t = ccp->type(in(1)); - if (!t->isa_oop_ptr() || ((in(1)->is_DecodeN()) && Matcher::gen_narrow_oop_implicit_null_checks())) { - return NULL; // do not transform raw pointers or narrow oops - } - return ConstraintCastNode::Ideal_DU_postCCP(ccp); - } - - - - //============================================================================= //------------------------------Identity--------------------------------------- // If input is already higher or equal to cast type, then this is an identity. Node *CheckCastPPNode::Identity( PhaseTransform *phase ) { // Toned down to rescue meeting at a Phi 3 different oops all implementing // the same interface. CompileTheWorld starting at 502, kd12rc1.zip. --- 542,551 ----
*** 689,702 **** assert(t->isa_oop_ptr(), "only oopptr here"); return t->make_narrowoop(); } - Node *EncodeNarrowPtrNode::Ideal_DU_postCCP( PhaseCCP *ccp ) { - return MemNode::Ideal_common_DU_postCCP(ccp, this, in(1)); - } - Node* DecodeNKlassNode::Identity(PhaseTransform* phase) { const Type *t = phase->type( in(1) ); if( t == Type::TOP ) return in(1); if (in(1)->is_EncodePKlass()) { --- 675,684 ----
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