Mercurial > jdk8-mips64-public > hotspot / annotate
src/cpu/x86/vm/globals_x86.hpp@18a08a7e16b5 (annotated)
src/cpu/x86/vm/globals_x86.hpp
Fri, 26 Jun 2009 07:26:10 -0700
- author
- twisti
- date
- Fri, 26 Jun 2009 07:26:10 -0700
- changeset 1259
- 18a08a7e16b5
- parent 1110
- f6da6f0174ac
- child 1279
- bd02caa94611
- permissions
- -rw-r--r--
5057225: Remove useless I2L conversions
Summary: The optimizer should be told to normalize (AndL (ConvI2L x) 0xFF) to (ConvI2L (AndI x 0xFF)), and then the existing matcher rule will work for free.
Reviewed-by: kvn
| duke@435 | 1 | /* |
| duke@435 | 2 | * Copyright 2000-2006 Sun Microsystems, Inc. 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 | * |
| duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@435 | 21 | * have any questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| duke@435 | 25 | // |
| duke@435 | 26 | // Sets the default values for platform dependent flags used by the runtime system. |
| duke@435 | 27 | // (see globals.hpp) |
| duke@435 | 28 | // |
| duke@435 | 29 | |
| duke@435 | 30 | define_pd_global(bool, ConvertSleepToYield, true); |
| duke@435 | 31 | define_pd_global(bool, ShareVtableStubs, true); |
| duke@435 | 32 | define_pd_global(bool, CountInterpCalls, true); |
| duke@435 | 33 | |
| duke@435 | 34 | define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks |
| duke@435 | 35 | define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast |
| duke@435 | 36 | |
| duke@435 | 37 | // See 4827828 for this change. There is no globals_core_i486.hpp. I can't |
| duke@435 | 38 | // assign a different value for C2 without touching a number of files. Use |
| duke@435 | 39 | // #ifdef to minimize the change as it's late in Mantis. -- FIXME. |
| duke@435 | 40 | // c1 doesn't have this problem because the fix to 4858033 assures us |
| duke@435 | 41 | // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns |
| duke@435 | 42 | // the uep and the vep doesn't get real alignment but just slops on by |
| duke@435 | 43 | // only assured that the entry instruction meets the 5 byte size requirement. |
| duke@435 | 44 | #ifdef COMPILER2 |
| duke@435 | 45 | define_pd_global(intx, CodeEntryAlignment, 32); |
| duke@435 | 46 | #else |
| duke@435 | 47 | define_pd_global(intx, CodeEntryAlignment, 16); |
| duke@435 | 48 | #endif // COMPILER2 |
| duke@435 | 49 | |
| duke@435 | 50 | define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this |
| duke@435 | 51 | |
| duke@435 | 52 | define_pd_global(uintx, TLABSize, 0); |
| duke@435 | 53 | #ifdef AMD64 |
| duke@435 | 54 | define_pd_global(uintx, NewSize, ScaleForWordSize(2048 * K)); |
| duke@435 | 55 | // Very large C++ stack frames using solaris-amd64 optimized builds |
| duke@435 | 56 | // due to lack of optimization caused by C++ compiler bugs |
| duke@435 | 57 | define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2)); |
| duke@435 | 58 | #else |
| duke@435 | 59 | define_pd_global(uintx, NewSize, 1024 * K); |
| duke@435 | 60 | define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); |
| duke@435 | 61 | #endif // AMD64 |
| duke@435 | 62 | define_pd_global(intx, InlineFrequencyCount, 100); |
| kvn@1110 | 63 | define_pd_global(intx, InlineSmallCode, 1000); |
| duke@435 | 64 | define_pd_global(intx, PreInflateSpin, 10); |
| duke@435 | 65 | |
| duke@435 | 66 | define_pd_global(intx, StackYellowPages, 2); |
| duke@435 | 67 | define_pd_global(intx, StackRedPages, 1); |
| duke@435 | 68 | |
| duke@435 | 69 | define_pd_global(bool, RewriteBytecodes, true); |
| duke@435 | 70 | define_pd_global(bool, RewriteFrequentPairs, true); |
