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comparison src/share/vm/opto/compile.cpp @ 8694:8651f608fea4

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8009460: C2compiler crash in machnode::in_regmask(unsigned int) Summary: 7121140 may not correctly break the Allocate -> MemBarStoreStore link Reviewed-by: kvn
author roland
date Wed, 06 Mar 2013 10:28:38 +0100
parents 571076d3c79d
children b7c2c5b2572c
comparison
equal deleted inserted replaced
8693:872b3feace55 8694:8651f608fea4
2897 if (in2->outcnt() == 0) { // Remove dead node 2897 if (in2->outcnt() == 0) { // Remove dead node
2898 in2->disconnect_inputs(NULL, this); 2898 in2->disconnect_inputs(NULL, this);
2899 } 2899 }
2900 } 2900 }
2901 break; 2901 break;
2902 case Op_MemBarStoreStore:
2903 // Break the link with AllocateNode: it is no longer useful and
2904 // confuses register allocation.
2905 if (n->req() > MemBarNode::Precedent) {
2906 n->set_req(MemBarNode::Precedent, top());
2907 }
2908 break;
2902 default: 2909 default:
2903 assert( !n->is_Call(), "" ); 2910 assert( !n->is_Call(), "" );
2904 assert( !n->is_Mem(), "" ); 2911 assert( !n->is_Mem(), "" );
2905 break; 2912 break;
2906 } 2913 }