Mercurial > hg > truffle
annotate src/share/vm/opto/adlcVMDeps.hpp @ 9126:bc26f978b0ce
HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly
don't use the (wrong) cached value, but ask the runtime on each request.
Fixes regression on xml.* benchmarks @ specjvm2008. The problem was:
After the constructor of Object was deoptimized due to an assumption violation,
it was recompiled again after some time. However, on recompilation, the value
of hasFinalizeSubclass for the class was not updated and it was compiled again
with a, now wrong, assumption, which then triggers deoptimization again.
This was repeated until it hit the recompilation limit (defined by
PerMethodRecompilationCutoff), and therefore only executed by the interpreter
from now on, causing the performance regression.
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Mon, 15 Apr 2013 19:54:58 +0200 |
parents | f95d63e2154a |
children |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
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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 #ifndef SHARE_VM_OPTO_ADLCVMDEPS_HPP |
26 #define SHARE_VM_OPTO_ADLCVMDEPS_HPP | |
27 | |
28 // adlcVMDeps.hpp is used by both adlc and vm builds. | |
29 // Only include allocation.hpp when we're not building adlc. | |
30 #ifndef SHARE_VM_ADLC_ARENA_HPP | |
31 #include "memory/allocation.hpp" | |
32 #endif | |
33 | |
0 | 34 // Declare commonly known constant and data structures between the |
35 // ADLC and the VM | |
36 // | |
37 | |
38 class AdlcVMDeps : public AllStatic { | |
39 public: | |
40 // Mirror of TypeFunc types | |
41 enum { Control, I_O, Memory, FramePtr, ReturnAdr, Parms }; | |
42 | |
43 enum Cisc_Status { Not_cisc_spillable = -1 }; | |
44 | |
45 // Mirror of OptoReg::Name names | |
46 enum Name { | |
47 Physical = 0 // Start of physical regs | |
48 }; | |
49 | |
50 // relocInfo | |
51 static const char* oop_reloc_type() { return "relocInfo::oop_type"; } | |
52 static const char* none_reloc_type() { return "relocInfo::none"; } | |
53 }; | |
1972 | 54 |
55 #endif // SHARE_VM_OPTO_ADLCVMDEPS_HPP |