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src/cpu/sparc/vm/globals_sparc.hpp@ac637b7220d1 (annotated)
src/cpu/sparc/vm/globals_sparc.hpp
Tue, 30 Nov 2010 23:23:40 -0800
- author
- iveresov
- date
- Tue, 30 Nov 2010 23:23:40 -0800
- changeset 2344
- ac637b7220d1
- parent 2314
- f95d63e2154a
- child 2650
- dde920245681
- permissions
- -rw-r--r--
6985015: C1 needs to support compressed oops
Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.
Reviewed-by: twisti, kvn, never, phh
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP |
| stefank@2314 | 26 | #define CPU_SPARC_VM_GLOBALS_SPARC_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "utilities/globalDefinitions.hpp" |
| stefank@2314 | 29 | #include "utilities/macros.hpp" |
| stefank@2314 | 30 | |
| duke@435 | 31 | // Sets the default values for platform dependent flags used by the runtime system. |
| duke@435 | 32 | // (see globals.hpp) |
| duke@435 | 33 | |
| duke@435 | 34 | // For sparc we do not do call backs when a thread is in the interpreter, because the |
| duke@435 | 35 | // interpreter dispatch needs at least two instructions - first to load the dispatch address |
| duke@435 | 36 | // in a register, and second to jmp. The swapping of the dispatch table may occur _after_ |
| duke@435 | 37 | // the load of the dispatch address and hence the jmp would still go to the location |
| duke@435 | 38 | // according to the prior table. So, we let the thread continue and let it block by itself. |
| duke@435 | 39 | define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second |
| duke@435 | 40 | define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI |
| duke@435 | 41 | define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress |
| duke@435 | 42 | define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter |
| duke@435 | 43 | define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this |
| duke@435 | 44 | |
| duke@435 | 45 | define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks |
| duke@435 | 46 | define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast |
| duke@435 | 47 | |
| phh@1499 | 48 | define_pd_global(intx, CodeEntryAlignment, 32); |
| kvn@1800 | 49 | // The default setting 16/16 seems to work best. |
| kvn@1800 | 50 | // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.) |
| kvn@1800 | 51 | define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize |
| phh@1499 | 52 | define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC |
| phh@1499 | 53 | define_pd_global(intx, InlineSmallCode, 1500); |
| duke@435 | 54 | #ifdef _LP64 |
| duke@435 | 55 | // Stack slots are 2X larger in LP64 than in the 32 bit VM. |
| phh@1499 | 56 | define_pd_global(intx, ThreadStackSize, 1024); |
| phh@1499 | 57 | define_pd_global(intx, VMThreadStackSize, 1024); |
| duke@435 | 58 | #else |
| phh@1499 | 59 | define_pd_global(intx, ThreadStackSize, 512); |
| phh@1499 | 60 | define_pd_global(intx, VMThreadStackSize, 512); |
| duke@435 | 61 | #endif |
| duke@435 | 62 | |
| duke@435 | 63 | define_pd_global(intx, StackYellowPages, 2); |
| duke@435 | 64 | define_pd_global(intx, StackRedPages, 1); |
| duke@435 | 65 | define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); |
| duke@435 | 66 | |
| phh@1499 | 67 | define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center |
| duke@435 | 68 | |
| duke@435 | 69 | define_pd_global(bool, RewriteBytecodes, true); |
| duke@435 | 70 | define_pd_global(bool, RewriteFrequentPairs, true); |
| bobv@2223 | 71 | |
| bobv@2223 | 72 | define_pd_global(bool, UseMembar, false); |
| stefank@2314 | 73 | |
| stefank@2314 | 74 | #endif // CPU_SPARC_VM_GLOBALS_SPARC_HPP |
