Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/subnode.cpp
src/share/vm/opto/subnode.cpp
- changeset 728
- c3e045194476
- parent 670
- 9c2ecc2ffb12
- child 731
- ce93a51457ae
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| 692:40b69ca33f4b | 728:c3e045194476 |
|---|---|
| 679 // Get the constant klass we are comparing to. | 679 // Get the constant klass we are comparing to. |
| 680 ciKlass* superklass = t2->klass(); | 680 ciKlass* superklass = t2->klass(); |
| 681 | 681 |
| 682 // Now check for LoadKlass on left. | 682 // Now check for LoadKlass on left. |
| 683 Node* ldk1 = in(1); | 683 Node* ldk1 = in(1); |
| 684 if (ldk1->Opcode() != Op_LoadKlass) | 684 if (ldk1->is_DecodeN()) { |
| 685 ldk1 = ldk1->in(1); | |
| 686 if (ldk1->Opcode() != Op_LoadNKlass ) | |
| 687 return NULL; | |
| 688 } else if (ldk1->Opcode() != Op_LoadKlass ) | |
| 685 return NULL; | 689 return NULL; |
| 686 // Take apart the address of the LoadKlass: | 690 // Take apart the address of the LoadKlass: |
| 687 Node* adr1 = ldk1->in(MemNode::Address); | 691 Node* adr1 = ldk1->in(MemNode::Address); |
| 688 intptr_t con2 = 0; | 692 intptr_t con2 = 0; |
| 689 Node* ldk2 = AddPNode::Ideal_base_and_offset(adr1, phase, con2); | 693 Node* ldk2 = AddPNode::Ideal_base_and_offset(adr1, phase, con2); |
| 700 } | 704 } |
| 701 } | 705 } |
| 702 | 706 |
| 703 // Check for a LoadKlass from primary supertype array. | 707 // Check for a LoadKlass from primary supertype array. |
| 704 // Any nested loadklass from loadklass+con must be from the p.s. array. | 708 // Any nested loadklass from loadklass+con must be from the p.s. array. |
| 705 if (ldk2->Opcode() != Op_LoadKlass) | 709 if (ldk2->is_DecodeN()) { |
| 710 // Keep ldk2 as DecodeN since it could be used in CmpP below. | |
| 711 if (ldk2->in(1)->Opcode() != Op_LoadNKlass ) | |
| 712 return NULL; | |
| 713 } else if (ldk2->Opcode() != Op_LoadKlass) | |
| 706 return NULL; | 714 return NULL; |
| 707 | 715 |
| 708 // Verify that we understand the situation | 716 // Verify that we understand the situation |
| 709 if (con2 != (intptr_t) superklass->super_check_offset()) | 717 if (con2 != (intptr_t) superklass->super_check_offset()) |
| 710 return NULL; // Might be element-klass loading from array klass | 718 return NULL; // Might be element-klass loading from array klass |
