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view src/cpu/x86/vm/c2_init_x86.cpp @ 1047:beb8f45ee9f0

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6889740: G1: OpenDS fails with "unhandled exception in compiled code" Summary: Incorrect code was being generated for the store operation in the null case of the aastore bytecode template. The bad code was generated by the store_heap_oop routine which takes a Register as its second argument. Passing NULL_WORD (0) as the second argument causes the value to be converted to Register(0), which is rax. Thus the generated store was "mov (dst), $rax" instead of "mov (dst), $0x0". Changed calls to store_heap_oop that pass NULL_WORD as the second argument to a new routine store_heap_oop_null. Reviewed-by: kvn, twisti
author johnc
date Thu, 29 Oct 2009 09:42:26 -0700
parents a61af66fc99e
children c18cbe5936b8
line wrap: on
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/*
 * Copyright 2000-2005 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

# include "incls/_precompiled.incl"
# include "incls/_c2_init_x86.cpp.incl"

// processor dependent initialization for i486

void Compile::pd_compiler2_init() {
  guarantee(CodeEntryAlignment >= InteriorEntryAlignment, "" );
  // QQQ presumably all 64bit cpu's support this. Seems like the ifdef could
  // simply be left out.
#ifndef AMD64
  if (!VM_Version::supports_cmov()) {
    ConditionalMoveLimit = 0;
  }
#endif // AMD64
}