3965 // Try to get a better type than POS for the size
3966 ary_type = ary_type->is_aryptr()->cast_to_size(length_type);
3967 }
3968
3969 Node* javaoop = set_output_for_allocation(alloc, ary_type, deoptimize_on_exception);
3970
3971 array_ideal_length(alloc, ary_type, true);
3972 return javaoop;
3973 }
3974
3975 // The following "Ideal_foo" functions are placed here because they recognize
3976 // the graph shapes created by the functions immediately above.
3977
3978 //---------------------------Ideal_allocation----------------------------------
3979 // Given an oop pointer or raw pointer, see if it feeds from an AllocateNode.
3980 AllocateNode* AllocateNode::Ideal_allocation(Node* ptr) {
3981 if (ptr == nullptr) { // reduce dumb test in callers
3982 return nullptr;
3983 }
3984
3985 BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
3986 ptr = bs->step_over_gc_barrier(ptr);
3987
3988 if (ptr->is_CheckCastPP()) { // strip only one raw-to-oop cast
3989 ptr = ptr->in(1);
3990 if (ptr == nullptr) return nullptr;
3991 }
3992 // Return null for allocations with several casts:
3993 // j.l.reflect.Array.newInstance(jobject, jint)
3994 // Object.clone()
3995 // to keep more precise type from last cast.
3996 if (ptr->is_Proj()) {
3997 Node* allo = ptr->in(0);
3998 if (allo != nullptr && allo->is_Allocate()) {
3999 return allo->as_Allocate();
4000 }
4001 }
4002 // Report failure to match.
4003 return nullptr;
4004 }
4005
4006 // Fancy version which also strips off an offset (and reports it to caller).
4007 AllocateNode* AllocateNode::Ideal_allocation(Node* ptr, PhaseValues* phase,
|
3965 // Try to get a better type than POS for the size
3966 ary_type = ary_type->is_aryptr()->cast_to_size(length_type);
3967 }
3968
3969 Node* javaoop = set_output_for_allocation(alloc, ary_type, deoptimize_on_exception);
3970
3971 array_ideal_length(alloc, ary_type, true);
3972 return javaoop;
3973 }
3974
3975 // The following "Ideal_foo" functions are placed here because they recognize
3976 // the graph shapes created by the functions immediately above.
3977
3978 //---------------------------Ideal_allocation----------------------------------
3979 // Given an oop pointer or raw pointer, see if it feeds from an AllocateNode.
3980 AllocateNode* AllocateNode::Ideal_allocation(Node* ptr) {
3981 if (ptr == nullptr) { // reduce dumb test in callers
3982 return nullptr;
3983 }
3984
3985 if (ptr->is_CheckCastPP()) { // strip only one raw-to-oop cast
3986 ptr = ptr->in(1);
3987 if (ptr == nullptr) return nullptr;
3988 }
3989 // Return null for allocations with several casts:
3990 // j.l.reflect.Array.newInstance(jobject, jint)
3991 // Object.clone()
3992 // to keep more precise type from last cast.
3993 if (ptr->is_Proj()) {
3994 Node* allo = ptr->in(0);
3995 if (allo != nullptr && allo->is_Allocate()) {
3996 return allo->as_Allocate();
3997 }
3998 }
3999 // Report failure to match.
4000 return nullptr;
4001 }
4002
4003 // Fancy version which also strips off an offset (and reports it to caller).
4004 AllocateNode* AllocateNode::Ideal_allocation(Node* ptr, PhaseValues* phase,
|