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src/cpu/sparc/vm/globals_sparc.hpp@e8260b6328fb
src/cpu/sparc/vm/globals_sparc.hpp
Fri, 29 May 2015 10:58:45 +0200
- author
- zmajo
- date
- Fri, 29 May 2015 10:58:45 +0200
- changeset 7854
- e8260b6328fb
- parent 6503
- a9becfeecd1b
- child 7994
- 04ff2f6cd0eb
- child 9834
- bb1da64b0492
- permissions
- -rw-r--r--
8068945: Use RBP register as proper frame pointer in JIT compiled code on x86
Summary: Introduce the PreserveFramePointer flag to control if RBP is used as the frame pointer or as a general purpose register.
Reviewed-by: kvn, roland, dlong, enevill, shade
1 /*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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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).
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23 */
25 #ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP
26 #define CPU_SPARC_VM_GLOBALS_SPARC_HPP
28 #include "utilities/globalDefinitions.hpp"
29 #include "utilities/macros.hpp"
31 // Sets the default values for platform dependent flags used by the runtime system.
32 // (see globals.hpp)
34 // For sparc we do not do call backs when a thread is in the interpreter, because the
35 // interpreter dispatch needs at least two instructions - first to load the dispatch address
36 // in a register, and second to jmp. The swapping of the dispatch table may occur _after_
37 // the load of the dispatch address and hence the jmp would still go to the location
38 // according to the prior table. So, we let the thread continue and let it block by itself.
39 define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second
40 define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI
41 define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress
42 define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter
43 define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this
45 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
46 define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on sparc.
47 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast
49 define_pd_global(intx, CodeEntryAlignment, 32);
50 // The default setting 16/16 seems to work best.
51 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
52 define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize
53 define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC
54 define_pd_global(intx, InlineSmallCode, 1500);
56 #ifdef _LP64
57 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
58 define_pd_global(intx, ThreadStackSize, 1024);
59 define_pd_global(intx, VMThreadStackSize, 1024);
60 define_pd_global(intx, StackShadowPages, 10 DEBUG_ONLY(+1));
61 #else
62 define_pd_global(intx, ThreadStackSize, 512);
63 define_pd_global(intx, VMThreadStackSize, 512);
64 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
65 #endif
67 define_pd_global(intx, StackYellowPages, 2);
68 define_pd_global(intx, StackRedPages, 1);
70 define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center
72 define_pd_global(bool, RewriteBytecodes, true);
73 define_pd_global(bool, RewriteFrequentPairs, true);
75 define_pd_global(bool, UseMembar, false);
77 define_pd_global(bool, PreserveFramePointer, false);
79 // GC Ergo Flags
80 define_pd_global(uintx, CMSYoungGenPerWorker, 16*M); // default max size of CMS young gen, per GC worker thread
82 define_pd_global(uintx, TypeProfileLevel, 0);
84 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \
85 \
86 product(intx, UseVIS, 99, \
87 "Highest supported VIS instructions set on Sparc") \
88 \
89 product(bool, UseCBCond, false, \
90 "Use compare and branch instruction on SPARC") \
91 \
92 product(bool, UseBlockZeroing, false, \
93 "Use special cpu instructions for block zeroing") \
94 \
95 product(intx, BlockZeroingLowLimit, 2048, \
96 "Minimum size in bytes when block zeroing will be used") \
97 \
98 product(bool, UseBlockCopy, false, \
99 "Use special cpu instructions for block copy") \
100 \
101 product(intx, BlockCopyLowLimit, 2048, \
102 "Minimum size in bytes when block copy will be used") \
103 \
104 develop(bool, UseV8InstrsOnly, false, \
105 "Use SPARC-V8 Compliant instruction subset") \
106 \
107 product(bool, UseNiagaraInstrs, false, \
108 "Use Niagara-efficient instruction subset") \
109 \
110 develop(bool, UseCASForSwap, false, \
111 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
112 \
113 product(uintx, ArraycopySrcPrefetchDistance, 0, \
114 "Distance to prefetch source array in arracopy") \
115 \
116 product(uintx, ArraycopyDstPrefetchDistance, 0, \
117 "Distance to prefetch destination array in arracopy") \
119 #endif // CPU_SPARC_VM_GLOBALS_SPARC_HPP
