Mercurial > hg > graal-compiler
annotate src/share/vm/graal/graalGlobals.cpp @ 11825:463f51256c86
AMD64HotSpot: emit jump to IC miss handler directly instead of emitting it inside verfied_entry
for empty methods we emitted something like this if a inline cache is needed:
prefix:
00: < IC check >
...
0b: jne <ic_miss_call>
11: nop
...
verified_entry:
20: ret
ic_miss_call:
21: jmp <entry of runtime function>
when a method is deoptimized, HotSpot patches the verified_entry (0x20) with a
jump to a stub that handles call-sites that has been made non-entrant. since this jump
is 5 bytes long, it will overwrite ic_miss_call and blow up every caller that
calls this method via the unverified entry (prefix).
the fix is to emit the jump to the runtime function inside the unverfied entry:
prefix:
00: < IC check >
...
0b: je <verified_entry>
11: jeq <entry of runtime function>
16: nop
...
verified_entry:
20: ret
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Mon, 30 Sep 2013 09:32:18 +0200 |
parents | 1baf7f1e3f23 |
children |
rev | line source |
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7125
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decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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1 /* |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
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2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
1baf7f1e3f23
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Doug Simon <doug.simon@oracle.com>
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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4 * |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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5 * This code is free software; you can redistribute it and/or modify it |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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6 * under the terms of the GNU General Public License version 2 only, as |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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7 * published by the Free Software Foundation. |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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8 * |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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12 * version 2 for more details (a copy is included in the LICENSE file that |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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13 * accompanied this code). |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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14 * |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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15 * You should have received a copy of the GNU General Public License version |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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18 * |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
parents:
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20 * or visit www.oracle.com if you need additional information or have any |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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21 * questions. |
1baf7f1e3f23
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Doug Simon <doug.simon@oracle.com>
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22 * |
1baf7f1e3f23
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Doug Simon <doug.simon@oracle.com>
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23 */ |
1baf7f1e3f23
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Doug Simon <doug.simon@oracle.com>
parents:
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24 |
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Doug Simon <doug.simon@oracle.com>
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25 #include "precompiled.hpp" |
1baf7f1e3f23
decoupled C++ Graal runtime from C1
Doug Simon <doug.simon@oracle.com>
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26 #include "graal/graalGlobals.hpp" |
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Doug Simon <doug.simon@oracle.com>
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27 |
1baf7f1e3f23
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Doug Simon <doug.simon@oracle.com>
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28 GRAAL_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) |