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comparison src/share/vm/opto/compile.cpp @ 647:bd441136a5ce

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Merge
author kvn
date Thu, 19 Mar 2009 09:13:24 -0700
parents 7bb995fbd3c0 660978a2a31a
children 75596850f863
comparison
equal deleted inserted replaced
640:ba50942c8138 647:bd441136a5ce
2079 break; 2079 break;
2080 } 2080 }
2081 2081
2082 #ifdef _LP64 2082 #ifdef _LP64
2083 case Op_CastPP: 2083 case Op_CastPP:
2084 if (n->in(1)->is_DecodeN() && UseImplicitNullCheckForNarrowOop) { 2084 if (n->in(1)->is_DecodeN() && Universe::narrow_oop_use_implicit_null_checks()) {
2085 Compile* C = Compile::current(); 2085 Compile* C = Compile::current();
2086 Node* in1 = n->in(1); 2086 Node* in1 = n->in(1);
2087 const Type* t = n->bottom_type(); 2087 const Type* t = n->bottom_type();
2088 Node* new_in1 = in1->clone(); 2088 Node* new_in1 = in1->clone();
2089 new_in1->as_DecodeN()->set_type(t); 2089 new_in1->as_DecodeN()->set_type(t);
2134 Node* new_in2 = NULL; 2134 Node* new_in2 = NULL;
2135 if (in2->is_DecodeN()) { 2135 if (in2->is_DecodeN()) {
2136 new_in2 = in2->in(1); 2136 new_in2 = in2->in(1);
2137 } else if (in2->Opcode() == Op_ConP) { 2137 } else if (in2->Opcode() == Op_ConP) {
2138 const Type* t = in2->bottom_type(); 2138 const Type* t = in2->bottom_type();
2139 if (t == TypePtr::NULL_PTR && UseImplicitNullCheckForNarrowOop) { 2139 if (t == TypePtr::NULL_PTR && Universe::narrow_oop_use_implicit_null_checks()) {
2140 new_in2 = ConNode::make(C, TypeNarrowOop::NULL_PTR); 2140 new_in2 = ConNode::make(C, TypeNarrowOop::NULL_PTR);
2141 // 2141 //
2142 // This transformation together with CastPP transformation above 2142 // This transformation together with CastPP transformation above
2143 // will generated code for implicit NULL checks for compressed oops. 2143 // will generated code for implicit NULL checks for compressed oops.
2144 // 2144 //