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comparison src/share/vm/opto/graphKit.cpp @ 17776:9ab9f254cfe2

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6653795: C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems Summary: Native pointers less than 64 bits wide should be extended as an unsigned number. Reviewed-by: kvn, kevinw
author poonam
date Mon, 24 Mar 2014 08:43:10 -0700
parents 62825ea7e51f
children 606acabe7b5c
comparison
equal deleted inserted replaced
17772:7d175751ef7f 17776:9ab9f254cfe2
1122 if (offset_con != Type::OffsetBot) { 1122 if (offset_con != Type::OffsetBot) {
1123 return longcon((jlong) offset_con); 1123 return longcon((jlong) offset_con);
1124 } 1124 }
1125 return _gvn.transform( new (C) ConvI2LNode(offset)); 1125 return _gvn.transform( new (C) ConvI2LNode(offset));
1126 } 1126 }
1127
1128 Node* GraphKit::ConvI2UL(Node* offset) {
1129 juint offset_con = (juint) find_int_con(offset, Type::OffsetBot);
1130 if (offset_con != (juint) Type::OffsetBot) {
1131 return longcon((julong) offset_con);
1132 }
1133 Node* conv = _gvn.transform( new (C) ConvI2LNode(offset));
1134 Node* mask = _gvn.transform( ConLNode::make(C, (julong) max_juint) );
1135 return _gvn.transform( new (C) AndLNode(conv, mask) );
1136 }
1137
1127 Node* GraphKit::ConvL2I(Node* offset) { 1138 Node* GraphKit::ConvL2I(Node* offset) {
1128 // short-circuit a common case 1139 // short-circuit a common case
1129 jlong offset_con = find_long_con(offset, (jlong)Type::OffsetBot); 1140 jlong offset_con = find_long_con(offset, (jlong)Type::OffsetBot);
1130 if (offset_con != (jlong)Type::OffsetBot) { 1141 if (offset_con != (jlong)Type::OffsetBot) {
1131 return intcon((int) offset_con); 1142 return intcon((int) offset_con);