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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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7
hotspot/src/share/vm/opto/graphKit.cpp
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@ -532,7 +532,7 @@ void GraphKit::builtin_throw(Deoptimization::DeoptReason reason, Node* arg) {
C->log()->elem("hot_throw preallocated='1' reason='%s'",
Deoptimization::trap_reason_name(reason));
const TypeInstPtr* ex_con = TypeInstPtr::make(ex_obj);
Node* ex_node = _gvn.transform(new (C, 1) ConPNode(ex_con));
Node* ex_node = _gvn.transform( ConNode::make(C, ex_con) );
// Clear the detail message of the preallocated exception object.
// Weblogic sometimes mutates the detail message of exceptions
@ -1043,7 +1043,7 @@ Node* GraphKit::load_object_klass(Node* obj) {
Node* akls = AllocateNode::Ideal_klass(obj, &_gvn);
if (akls != NULL) return akls;
Node* k_adr = basic_plus_adr(obj, oopDesc::klass_offset_in_bytes());
return _gvn.transform( new (C, 3) LoadKlassNode(0, immutable_memory(), k_adr, TypeInstPtr::KLASS) );
return _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), k_adr, TypeInstPtr::KLASS) );
}
//-------------------------load_array_length-----------------------------------
@ -2210,7 +2210,7 @@ Node* GraphKit::gen_subtype_check(Node* subklass, Node* superklass) {
// cache which is mutable so can't use immutable memory. Other
// types load from the super-class display table which is immutable.
Node *kmem = might_be_cache ? memory(p2) : immutable_memory();
Node *nkls = _gvn.transform( new (C, 3) LoadKlassNode( NULL, kmem, p2, _gvn.type(p2)->is_ptr(), TypeKlassPtr::OBJECT_OR_NULL ) );
Node *nkls = _gvn.transform( LoadKlassNode::make( _gvn, kmem, p2, _gvn.type(p2)->is_ptr(), TypeKlassPtr::OBJECT_OR_NULL ) );
// Compile speed common case: ARE a subtype and we canNOT fail
if( superklass == nkls )
@ -2801,7 +2801,6 @@ Node* GraphKit::set_output_for_allocation(AllocateNode* alloc,
// initialization, and source them from the new InitializeNode.
// This will allow us to observe initializations when they occur,
// and link them properly (as a group) to the InitializeNode.
Node* klass_node = alloc->in(AllocateNode::KlassNode);
assert(init->in(InitializeNode::Memory) == malloc, "");
MergeMemNode* minit_in = MergeMemNode::make(C, malloc);
init->set_req(InitializeNode::Memory, minit_in);