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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/connode.cpp
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@ -38,12 +38,12 @@ ConNode *ConNode::make( Compile* C, const Type *t ) {
if (t->isa_narrowoop()) return new (C, 1) ConNNode( t->is_narrowoop() );
switch( t->basic_type() ) {
case T_INT: return new (C, 1) ConINode( t->is_int() );
case T_ARRAY: return new (C, 1) ConPNode( t->is_aryptr() );
case T_LONG: return new (C, 1) ConLNode( t->is_long() );
case T_FLOAT: return new (C, 1) ConFNode( t->is_float_constant() );
case T_DOUBLE: return new (C, 1) ConDNode( t->is_double_constant() );
case T_VOID: return new (C, 1) ConNode ( Type::TOP );
case T_OBJECT: return new (C, 1) ConPNode( t->is_oopptr() );
case T_ARRAY: return new (C, 1) ConPNode( t->is_aryptr() );
case T_ADDRESS: return new (C, 1) ConPNode( t->is_ptr() );
// Expected cases: TypePtr::NULL_PTR, any is_rawptr()
// Also seen: AnyPtr(TopPTR *+top); from command line:
@ -185,6 +185,7 @@ CMoveNode *CMoveNode::make( Compile *C, Node *c, Node *bol, Node *left, Node *ri
case T_LONG: return new (C, 4) CMoveLNode( bol, left, right, t->is_long() );
case T_OBJECT: return new (C, 4) CMovePNode( c, bol, left, right, t->is_oopptr() );
case T_ADDRESS: return new (C, 4) CMovePNode( c, bol, left, right, t->is_ptr() );
case T_NARROWOOP: return new (C, 4) CMoveNNode( c, bol, left, right, t );
default:
ShouldNotReachHere();
return NULL;
@ -570,7 +571,7 @@ const Type *DecodeNNode::Value( PhaseTransform *phase ) const {
return bottom_type();
}
Node* DecodeNNode::decode(PhaseGVN* phase, Node* value) {
Node* DecodeNNode::decode(PhaseTransform* phase, Node* value) {
if (value->Opcode() == Op_EncodeP) {
// (DecodeN (EncodeP p)) -> p
return value->in(1);
@ -604,7 +605,7 @@ const Type *EncodePNode::Value( PhaseTransform *phase ) const {
return bottom_type();
}
Node* EncodePNode::encode(PhaseGVN* phase, Node* value) {
Node* EncodePNode::encode(PhaseTransform* phase, Node* value) {
if (value->Opcode() == Op_DecodeN) {
// (EncodeP (DecodeN p)) -> p
return value->in(1);