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comparison src/share/vm/opto/connode.cpp @ 164:c436414a719e

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6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions Summary: Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions. Reviewed-by: never, rasbold
author kvn
date Wed, 21 May 2008 13:46:23 -0700
parents 885ed790ecf0
children 7793bd37a336
comparison
equal deleted inserted replaced
163:885ed790ecf0 164:c436414a719e
36 //------------------------------make------------------------------------------- 36 //------------------------------make-------------------------------------------
37 ConNode *ConNode::make( Compile* C, const Type *t ) { 37 ConNode *ConNode::make( Compile* C, const Type *t ) {
38 if (t->isa_narrowoop()) return new (C, 1) ConNNode( t->is_narrowoop() ); 38 if (t->isa_narrowoop()) return new (C, 1) ConNNode( t->is_narrowoop() );
39 switch( t->basic_type() ) { 39 switch( t->basic_type() ) {
40 case T_INT: return new (C, 1) ConINode( t->is_int() ); 40 case T_INT: return new (C, 1) ConINode( t->is_int() );
41 case T_ARRAY: return new (C, 1) ConPNode( t->is_aryptr() );
42 case T_LONG: return new (C, 1) ConLNode( t->is_long() ); 41 case T_LONG: return new (C, 1) ConLNode( t->is_long() );
43 case T_FLOAT: return new (C, 1) ConFNode( t->is_float_constant() ); 42 case T_FLOAT: return new (C, 1) ConFNode( t->is_float_constant() );
44 case T_DOUBLE: return new (C, 1) ConDNode( t->is_double_constant() ); 43 case T_DOUBLE: return new (C, 1) ConDNode( t->is_double_constant() );
45 case T_VOID: return new (C, 1) ConNode ( Type::TOP ); 44 case T_VOID: return new (C, 1) ConNode ( Type::TOP );
46 case T_OBJECT: return new (C, 1) ConPNode( t->is_oopptr() ); 45 case T_OBJECT: return new (C, 1) ConPNode( t->is_oopptr() );
46 case T_ARRAY: return new (C, 1) ConPNode( t->is_aryptr() );
47 case T_ADDRESS: return new (C, 1) ConPNode( t->is_ptr() ); 47 case T_ADDRESS: return new (C, 1) ConPNode( t->is_ptr() );
48 // Expected cases: TypePtr::NULL_PTR, any is_rawptr() 48 // Expected cases: TypePtr::NULL_PTR, any is_rawptr()
49 // Also seen: AnyPtr(TopPTR *+top); from command line: 49 // Also seen: AnyPtr(TopPTR *+top); from command line:
50 // r -XX:+PrintOpto -XX:CIStart=285 -XX:+CompileTheWorld -XX:CompileTheWorldStartAt=660 50 // r -XX:+PrintOpto -XX:CIStart=285 -XX:+CompileTheWorld -XX:CompileTheWorldStartAt=660
51 // %%%% Stop using TypePtr::NULL_PTR to represent nulls: use either TypeRawPtr::NULL_PTR 51 // %%%% Stop using TypePtr::NULL_PTR to represent nulls: use either TypeRawPtr::NULL_PTR
183 case T_FLOAT: return new (C, 4) CMoveFNode( bol, left, right, t ); 183 case T_FLOAT: return new (C, 4) CMoveFNode( bol, left, right, t );
184 case T_DOUBLE: return new (C, 4) CMoveDNode( bol, left, right, t ); 184 case T_DOUBLE: return new (C, 4) CMoveDNode( bol, left, right, t );
185 case T_LONG: return new (C, 4) CMoveLNode( bol, left, right, t->is_long() ); 185 case T_LONG: return new (C, 4) CMoveLNode( bol, left, right, t->is_long() );
186 case T_OBJECT: return new (C, 4) CMovePNode( c, bol, left, right, t->is_oopptr() ); 186 case T_OBJECT: return new (C, 4) CMovePNode( c, bol, left, right, t->is_oopptr() );
187 case T_ADDRESS: return new (C, 4) CMovePNode( c, bol, left, right, t->is_ptr() ); 187 case T_ADDRESS: return new (C, 4) CMovePNode( c, bol, left, right, t->is_ptr() );
188 case T_NARROWOOP: return new (C, 4) CMoveNNode( c, bol, left, right, t );
188 default: 189 default:
189 ShouldNotReachHere(); 190 ShouldNotReachHere();
190 return NULL; 191 return NULL;
191 } 192 }
192 } 193 }
568 return TypePtr::NULL_PTR; 569 return TypePtr::NULL_PTR;
569 } 570 }
570 return bottom_type(); 571 return bottom_type();
571 } 572 }
572 573
573 Node* DecodeNNode::decode(PhaseGVN* phase, Node* value) { 574 Node* DecodeNNode::decode(PhaseTransform* phase, Node* value) {
574 if (value->Opcode() == Op_EncodeP) { 575 if (value->Opcode() == Op_EncodeP) {
575 // (DecodeN (EncodeP p)) -> p 576 // (DecodeN (EncodeP p)) -> p
576 return value->in(1); 577 return value->in(1);
577 } 578 }
578 const Type* newtype = value->bottom_type(); 579 const Type* newtype = value->bottom_type();
602 return TypeNarrowOop::NULL_PTR; 603 return TypeNarrowOop::NULL_PTR;
603 } 604 }
604 return bottom_type(); 605 return bottom_type();
605 } 606 }
606 607
607 Node* EncodePNode::encode(PhaseGVN* phase, Node* value) { 608 Node* EncodePNode::encode(PhaseTransform* phase, Node* value) {
608 if (value->Opcode() == Op_DecodeN) { 609 if (value->Opcode() == Op_DecodeN) {
609 // (EncodeP (DecodeN p)) -> p 610 // (EncodeP (DecodeN p)) -> p
610 return value->in(1); 611 return value->in(1);
611 } 612 }
612 const Type* newtype = value->bottom_type(); 613 const Type* newtype = value->bottom_type();