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comparison src/cpu/x86/vm/c1_LIRGenerator_x86.cpp @ 2169:f966c66b5463

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7014247: CTW fails when compile sun/misc/AtomicLongCSImpl (REMOVED from JDK7) Summary: Use lea to compute field address in AtomicLongCSImpl::attemptUpdate() intrinsic on x86. Reviewed-by: never, kvn
author iveresov
date Tue, 25 Jan 2011 14:38:15 -0800
parents 037c727f35fb
children e1162778c1c8
comparison
equal deleted inserted replaced
2168:e4fee0bdaa85 2169:f966c66b5463
1 /* 1 /*
2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
731 // object pointer register is overwritten with field address 731 // object pointer register is overwritten with field address
732 obj.load_item(); 732 obj.load_item();
733 733
734 // generate compare-and-swap; produces zero condition if swap occurs 734 // generate compare-and-swap; produces zero condition if swap occurs
735 int value_offset = sun_misc_AtomicLongCSImpl::value_offset(); 735 int value_offset = sun_misc_AtomicLongCSImpl::value_offset();
736 LIR_Opr addr = obj.result(); 736 LIR_Opr addr = new_pointer_register();
737 __ add(addr, LIR_OprFact::intConst(value_offset), addr); 737 __ leal(LIR_OprFact::address(new LIR_Address(obj.result(), value_offset, T_LONG)), addr);
738 LIR_Opr t1 = LIR_OprFact::illegalOpr; // no temp needed 738 LIR_Opr t1 = LIR_OprFact::illegalOpr; // no temp needed
739 LIR_Opr t2 = LIR_OprFact::illegalOpr; // no temp needed 739 LIR_Opr t2 = LIR_OprFact::illegalOpr; // no temp needed
740 __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2); 740 __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2);
741 741
742 // generate conditional move of boolean result 742 // generate conditional move of boolean result