Mercurial > hg > truffle
annotate src/cpu/x86/vm/runtime_x86_64.cpp @ 15388:769fc3629f59
Add phase FlowSensitiveReductionPhase.
It is possible to remove GuardingPiNodes, CheckCastNodes, and FixedGuards during
HighTier under certain conditions (control-flow sensitive conditions).
The phase added in this commit (FlowSensitiveReductionPhase) does that,
and in addition replaces usages with "downcasting" PiNodes when possible
thus resulting in more precise object stamps (e.g., non-null).
Finally, usages of floating, side-effects free, expressions are also simplified
(as per control-flow sensitive conditions).
The newly added phase runs only during HighTier and can be deactivated
using Graal option FlowSensitiveReduction (it is active by default).
| author | Miguel Garcia <miguel.m.garcia@oracle.com> |
|---|---|
| date | Fri, 25 Apr 2014 16:50:52 +0200 |
| parents | cd3d6a6b95d9 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 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 | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #ifdef COMPILER2 | |
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27 #include "asm/macroAssembler.hpp" |
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28 #include "asm/macroAssembler.inline.hpp" |
| 1972 | 29 #include "classfile/systemDictionary.hpp" |
| 30 #include "code/vmreg.hpp" | |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "opto/runtime.hpp" | |
| 33 #include "runtime/interfaceSupport.hpp" | |
| 34 #include "runtime/sharedRuntime.hpp" | |
| 35 #include "runtime/stubRoutines.hpp" | |
| 36 #include "runtime/vframeArray.hpp" | |
| 37 #include "utilities/globalDefinitions.hpp" | |
| 38 #include "vmreg_x86.inline.hpp" | |
| 39 #endif | |
| 40 | |
| 0 | 41 |
| 42 // This file should really contain the code for generating the OptoRuntime | |
| 43 // exception_blob. However that code uses SimpleRuntimeFrame which only | |
| 44 // exists in sharedRuntime_x86_64.cpp. When there is a sharedRuntime_<arch>.hpp | |
| 45 // file and SimpleRuntimeFrame is able to move there then the exception_blob | |
| 46 // code will move here where it belongs. |