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6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions

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Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions.

Reviewed-by: never, rasbold
This commit is contained in:
Vladimir Kozlov 2008-05-21 13:46:23 -07:00
parent 757229db71
commit 76035424de
29 changed files with 428 additions and 128 deletions
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6
hotspot/src/share/vm/opto/parseHelper.cpp
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@ -38,7 +38,7 @@ void GraphKit::make_dtrace_method_entry_exit(ciMethod* method, bool is_entry) {
// Get method
const TypeInstPtr* method_type = TypeInstPtr::make(TypePtr::Constant, method->klass(), true, method, 0);
Node *method_node = _gvn.transform( new (C, 1) ConPNode(method_type) );
Node *method_node = _gvn.transform( ConNode::make(C, method_type) );
kill_dead_locals();
@ -143,7 +143,7 @@ void Parse::array_store_check() {
int klass_offset = oopDesc::klass_offset_in_bytes();
Node* p = basic_plus_adr( ary, ary, klass_offset );
// p's type is array-of-OOPS plus klass_offset
Node* array_klass = _gvn.transform(new (C, 3) LoadKlassNode(0, immutable_memory(), p, TypeInstPtr::KLASS));
Node* array_klass = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeInstPtr::KLASS) );
// Get the array klass
const TypeKlassPtr *tak = _gvn.type(array_klass)->is_klassptr();
@ -189,7 +189,7 @@ void Parse::array_store_check() {
// Extract the array element class
int element_klass_offset = objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc);
Node *p2 = basic_plus_adr(array_klass, array_klass, element_klass_offset);
Node *a_e_klass = _gvn.transform(new (C, 3) LoadKlassNode(0, immutable_memory(), p2, tak));
Node *a_e_klass = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p2, tak) );
// Check (the hard way) and throw if not a subklass.
// Result is ignored, we just need the CFG effects.