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8076094: CheckCastPPNode::Value() has outdated logic for constants

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Outdated logic for constants in CheckCastPPNode::Value()

Reviewed-by: kvn, vlivanov
This commit is contained in:
Roland Westrelin 2015-03-23 14:21:17 +01:00
parent 9e55e44c85
commit ef217cba65
1 changed files with 5 additions and 8 deletions

13
hotspot/src/share/vm/opto/castnode.cpp

@ -216,16 +216,13 @@ const Type *CheckCastPPNode::Value( PhaseTransform *phase ) const {
const Type *result = _type;
if( in_type != NULL && my_type != NULL ) {
TypePtr::PTR in_ptr = in_type->ptr();
if( in_ptr == TypePtr::Null ) {
if (in_ptr == TypePtr::Null) {
result = in_type;
} else if( in_ptr == TypePtr::Constant ) {
// Casting a constant oop to an interface?
// (i.e., a String to a Comparable?)
// Then return the interface.
} else if (in_ptr == TypePtr::Constant) {
const TypeOopPtr *jptr = my_type->isa_oopptr();
assert( jptr, "" );
result = (jptr->klass()->is_interface() || !in_type->higher_equal(_type))
? my_type->cast_to_ptr_type( TypePtr::NotNull )
assert(jptr, "");
result = !in_type->higher_equal(_type)
? my_type->cast_to_ptr_type(TypePtr::NotNull)
: in_type;
} else {
result = my_type->cast_to_ptr_type( my_type->join_ptr(in_ptr) );